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OrcaSlicer/src/slic3r/GUI/3DScene.cpp

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#include <GL/glew.h>
#if ENABLE_SMOOTH_NORMALS
#include <igl/per_face_normals.h>
#include <igl/per_corner_normals.h>
#include <igl/per_vertex_normals.h>
#endif // ENABLE_SMOOTH_NORMALS
#include "3DScene.hpp"
#include "GLShader.hpp"
#include "GUI_App.hpp"
#if ENABLE_ENVIRONMENT_MAP
#include "Plater.hpp"
#endif // ENABLE_ENVIRONMENT_MAP
#include "libslic3r/ExtrusionEntity.hpp"
#include "libslic3r/ExtrusionEntityCollection.hpp"
#include "libslic3r/Geometry.hpp"
#include "libslic3r/Print.hpp"
#include "libslic3r/SLAPrint.hpp"
#include "libslic3r/Slicing.hpp"
#include "slic3r/GUI/BitmapCache.hpp"
#include "libslic3r/Format/STL.hpp"
#include "libslic3r/Utils.hpp"
#include "libslic3r/AppConfig.hpp"
#if DISABLE_ALLOW_NEGATIVE_Z_FOR_SLA
#include "libslic3r/PresetBundle.hpp"
#endif // DISABLE_ALLOW_NEGATIVE_Z_FOR_SLA
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <boost/log/trivial.hpp>
#include <boost/filesystem/operations.hpp>
#include <boost/algorithm/string/predicate.hpp>
#include <Eigen/Dense>
#ifdef HAS_GLSAFE
void glAssertRecentCallImpl(const char* file_name, unsigned int line, const char* function_name)
{
#if defined(NDEBUG)
// In release mode, only show OpenGL errors if sufficiently high loglevel.
if (Slic3r::get_logging_level() < 5)
return;
#endif // NDEBUG
GLenum err = glGetError();
if (err == GL_NO_ERROR)
return;
const char* sErr = 0;
switch (err) {
case GL_INVALID_ENUM: sErr = "Invalid Enum"; break;
case GL_INVALID_VALUE: sErr = "Invalid Value"; break;
// be aware that GL_INVALID_OPERATION is generated if glGetError is executed between the execution of glBegin and the corresponding execution of glEnd
case GL_INVALID_OPERATION: sErr = "Invalid Operation"; break;
case GL_STACK_OVERFLOW: sErr = "Stack Overflow"; break;
case GL_STACK_UNDERFLOW: sErr = "Stack Underflow"; break;
case GL_OUT_OF_MEMORY: sErr = "Out Of Memory"; break;
default: sErr = "Unknown"; break;
}
BOOST_LOG_TRIVIAL(error) << "OpenGL error in " << file_name << ":" << line << ", function " << function_name << "() : " << (int)err << " - " << sErr;
assert(false);
}
#endif // HAS_GLSAFE
namespace Slic3r {
#if ENABLE_SMOOTH_NORMALS
static void smooth_normals_corner(TriangleMesh& mesh, std::vector<stl_normal>& normals)
{
mesh.repair();
using MapMatrixXfUnaligned = Eigen::Map<const Eigen::Matrix<float, Eigen::Dynamic, Eigen::Dynamic, Eigen::RowMajor | Eigen::DontAlign>>;
using MapMatrixXiUnaligned = Eigen::Map<const Eigen::Matrix<int, Eigen::Dynamic, Eigen::Dynamic, Eigen::RowMajor | Eigen::DontAlign>>;
std::vector<stl_normal> face_normals(mesh.stl.stats.number_of_facets);
for (uint32_t i = 0; i < mesh.stl.stats.number_of_facets; ++i) {
face_normals[i] = mesh.stl.facet_start[i].normal;
}
Eigen::MatrixXd vertices = MapMatrixXfUnaligned(mesh.its.vertices.front().data(),
Eigen::Index(mesh.its.vertices.size()), 3).cast<double>();
Eigen::MatrixXi indices = MapMatrixXiUnaligned(mesh.its.indices.front().data(),
Eigen::Index(mesh.its.indices.size()), 3);
Eigen::MatrixXd in_normals = MapMatrixXfUnaligned(face_normals.front().data(),
Eigen::Index(face_normals.size()), 3).cast<double>();
Eigen::MatrixXd out_normals;
igl::per_corner_normals(vertices, indices, in_normals, 1.0, out_normals);
normals = std::vector<stl_normal>(mesh.its.vertices.size());
for (size_t i = 0; i < mesh.its.indices.size(); ++i) {
for (size_t j = 0; j < 3; ++j) {
normals[mesh.its.indices[i][j]] = out_normals.row(i * 3 + j).cast<float>();
}
}
}
static void smooth_normals_vertex(TriangleMesh& mesh, std::vector<stl_normal>& normals)
{
mesh.repair();
using MapMatrixXfUnaligned = Eigen::Map<const Eigen::Matrix<float, Eigen::Dynamic, Eigen::Dynamic, Eigen::RowMajor | Eigen::DontAlign>>;
using MapMatrixXiUnaligned = Eigen::Map<const Eigen::Matrix<int, Eigen::Dynamic, Eigen::Dynamic, Eigen::RowMajor | Eigen::DontAlign>>;
Eigen::MatrixXd vertices = MapMatrixXfUnaligned(mesh.its.vertices.front().data(),
Eigen::Index(mesh.its.vertices.size()), 3).cast<double>();
Eigen::MatrixXi indices = MapMatrixXiUnaligned(mesh.its.indices.front().data(),
Eigen::Index(mesh.its.indices.size()), 3);
Eigen::MatrixXd out_normals;
// igl::per_vertex_normals(vertices, indices, igl::PER_VERTEX_NORMALS_WEIGHTING_TYPE_UNIFORM, out_normals);
// igl::per_vertex_normals(vertices, indices, igl::PER_VERTEX_NORMALS_WEIGHTING_TYPE_AREA, out_normals);
igl::per_vertex_normals(vertices, indices, igl::PER_VERTEX_NORMALS_WEIGHTING_TYPE_ANGLE, out_normals);
// igl::per_vertex_normals(vertices, indices, igl::PER_VERTEX_NORMALS_WEIGHTING_TYPE_DEFAULT, out_normals);
normals = std::vector<stl_normal>(mesh.its.vertices.size());
for (size_t i = 0; i < static_cast<size_t>(out_normals.rows()); ++i) {
normals[i] = out_normals.row(i).cast<float>();
}
}
#endif // ENABLE_SMOOTH_NORMALS
#if ENABLE_SMOOTH_NORMALS
void GLIndexedVertexArray::load_mesh_full_shading(const TriangleMesh& mesh, bool smooth_normals)
#else
void GLIndexedVertexArray::load_mesh_full_shading(const TriangleMesh& mesh)
#endif // ENABLE_SMOOTH_NORMALS
{
assert(triangle_indices.empty() && vertices_and_normals_interleaved_size == 0);
assert(quad_indices.empty() && triangle_indices_size == 0);
assert(vertices_and_normals_interleaved.size() % 6 == 0 && quad_indices_size == vertices_and_normals_interleaved.size());
#if ENABLE_SMOOTH_NORMALS
if (smooth_normals) {
TriangleMesh new_mesh(mesh);
std::vector<stl_normal> normals;
smooth_normals_corner(new_mesh, normals);
// smooth_normals_vertex(new_mesh, normals);
this->vertices_and_normals_interleaved.reserve(this->vertices_and_normals_interleaved.size() + 3 * 2 * new_mesh.its.vertices.size());
for (size_t i = 0; i < new_mesh.its.vertices.size(); ++i) {
const stl_vertex& v = new_mesh.its.vertices[i];
const stl_normal& n = normals[i];
this->push_geometry(v(0), v(1), v(2), n(0), n(1), n(2));
}
for (size_t i = 0; i < new_mesh.its.indices.size(); ++i) {
const stl_triangle_vertex_indices& idx = new_mesh.its.indices[i];
this->push_triangle(idx(0), idx(1), idx(2));
}
}
else {
#endif // ENABLE_SMOOTH_NORMALS
this->vertices_and_normals_interleaved.reserve(this->vertices_and_normals_interleaved.size() + 3 * 3 * 2 * mesh.facets_count());
unsigned int vertices_count = 0;
for (int i = 0; i < (int)mesh.stl.stats.number_of_facets; ++i) {
const stl_facet& facet = mesh.stl.facet_start[i];
for (int j = 0; j < 3; ++j)
this->push_geometry(facet.vertex[j](0), facet.vertex[j](1), facet.vertex[j](2), facet.normal(0), facet.normal(1), facet.normal(2));
this->push_triangle(vertices_count, vertices_count + 1, vertices_count + 2);
vertices_count += 3;
}
#if ENABLE_SMOOTH_NORMALS
}
#endif // ENABLE_SMOOTH_NORMALS
}
void GLIndexedVertexArray::finalize_geometry(bool opengl_initialized)
{
assert(this->vertices_and_normals_interleaved_VBO_id == 0);
assert(this->triangle_indices_VBO_id == 0);
assert(this->quad_indices_VBO_id == 0);
if (! opengl_initialized) {
// Shrink the data vectors to conserve memory in case the data cannot be transfered to the OpenGL driver yet.
this->shrink_to_fit();
return;
}
if (! this->vertices_and_normals_interleaved.empty()) {
glsafe(::glGenBuffers(1, &this->vertices_and_normals_interleaved_VBO_id));
glsafe(::glBindBuffer(GL_ARRAY_BUFFER, this->vertices_and_normals_interleaved_VBO_id));
glsafe(::glBufferData(GL_ARRAY_BUFFER, this->vertices_and_normals_interleaved.size() * 4, this->vertices_and_normals_interleaved.data(), GL_STATIC_DRAW));
glsafe(::glBindBuffer(GL_ARRAY_BUFFER, 0));
this->vertices_and_normals_interleaved.clear();
}
if (! this->triangle_indices.empty()) {
glsafe(::glGenBuffers(1, &this->triangle_indices_VBO_id));
glsafe(::glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, this->triangle_indices_VBO_id));
glsafe(::glBufferData(GL_ELEMENT_ARRAY_BUFFER, this->triangle_indices.size() * 4, this->triangle_indices.data(), GL_STATIC_DRAW));
glsafe(::glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0));
this->triangle_indices.clear();
}
if (! this->quad_indices.empty()) {
glsafe(::glGenBuffers(1, &this->quad_indices_VBO_id));
glsafe(::glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, this->quad_indices_VBO_id));
glsafe(::glBufferData(GL_ELEMENT_ARRAY_BUFFER, this->quad_indices.size() * 4, this->quad_indices.data(), GL_STATIC_DRAW));
glsafe(::glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0));
this->quad_indices.clear();
}
}
void GLIndexedVertexArray::release_geometry()
{
if (this->vertices_and_normals_interleaved_VBO_id) {
glsafe(::glDeleteBuffers(1, &this->vertices_and_normals_interleaved_VBO_id));
this->vertices_and_normals_interleaved_VBO_id = 0;
}
if (this->triangle_indices_VBO_id) {
glsafe(::glDeleteBuffers(1, &this->triangle_indices_VBO_id));
this->triangle_indices_VBO_id = 0;
}
if (this->quad_indices_VBO_id) {
glsafe(::glDeleteBuffers(1, &this->quad_indices_VBO_id));
this->quad_indices_VBO_id = 0;
}
this->clear();
}
void GLIndexedVertexArray::render() const
{
assert(this->vertices_and_normals_interleaved_VBO_id != 0);
assert(this->triangle_indices_VBO_id != 0 || this->quad_indices_VBO_id != 0);
glsafe(::glBindBuffer(GL_ARRAY_BUFFER, this->vertices_and_normals_interleaved_VBO_id));
glsafe(::glVertexPointer(3, GL_FLOAT, 6 * sizeof(float), (const void*)(3 * sizeof(float))));
glsafe(::glNormalPointer(GL_FLOAT, 6 * sizeof(float), nullptr));
glsafe(::glEnableClientState(GL_VERTEX_ARRAY));
glsafe(::glEnableClientState(GL_NORMAL_ARRAY));
// Render using the Vertex Buffer Objects.
if (this->triangle_indices_size > 0) {
glsafe(::glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, this->triangle_indices_VBO_id));
glsafe(::glDrawElements(GL_TRIANGLES, GLsizei(this->triangle_indices_size), GL_UNSIGNED_INT, nullptr));
glsafe(glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0));
}
if (this->quad_indices_size > 0) {
glsafe(::glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, this->quad_indices_VBO_id));
glsafe(::glDrawElements(GL_QUADS, GLsizei(this->quad_indices_size), GL_UNSIGNED_INT, nullptr));
glsafe(glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0));
}
glsafe(::glDisableClientState(GL_VERTEX_ARRAY));
glsafe(::glDisableClientState(GL_NORMAL_ARRAY));
glsafe(::glBindBuffer(GL_ARRAY_BUFFER, 0));
}
void GLIndexedVertexArray::render(
const std::pair<size_t, size_t>& tverts_range,
const std::pair<size_t, size_t>& qverts_range) const
{
assert(this->vertices_and_normals_interleaved_VBO_id != 0);
assert(this->triangle_indices_VBO_id != 0 || this->quad_indices_VBO_id != 0);
// Render using the Vertex Buffer Objects.
glsafe(::glBindBuffer(GL_ARRAY_BUFFER, this->vertices_and_normals_interleaved_VBO_id));
glsafe(::glVertexPointer(3, GL_FLOAT, 6 * sizeof(float), (const void*)(3 * sizeof(float))));
glsafe(::glNormalPointer(GL_FLOAT, 6 * sizeof(float), nullptr));
glsafe(::glEnableClientState(GL_VERTEX_ARRAY));
glsafe(::glEnableClientState(GL_NORMAL_ARRAY));
if (this->triangle_indices_size > 0) {
glsafe(::glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, this->triangle_indices_VBO_id));
glsafe(::glDrawElements(GL_TRIANGLES, GLsizei(std::min(this->triangle_indices_size, tverts_range.second - tverts_range.first)), GL_UNSIGNED_INT, (const void*)(tverts_range.first * 4)));
glsafe(::glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0));
}
if (this->quad_indices_size > 0) {
glsafe(::glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, this->quad_indices_VBO_id));
glsafe(::glDrawElements(GL_QUADS, GLsizei(std::min(this->quad_indices_size, qverts_range.second - qverts_range.first)), GL_UNSIGNED_INT, (const void*)(qverts_range.first * 4)));
glsafe(::glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0));
}
glsafe(::glDisableClientState(GL_VERTEX_ARRAY));
glsafe(::glDisableClientState(GL_NORMAL_ARRAY));
glsafe(::glBindBuffer(GL_ARRAY_BUFFER, 0));
}
const float GLVolume::SELECTED_COLOR[4] = { 0.0f, 1.0f, 0.0f, 1.0f };
const float GLVolume::HOVER_SELECT_COLOR[4] = { 0.4f, 0.9f, 0.1f, 1.0f };
const float GLVolume::HOVER_DESELECT_COLOR[4] = { 1.0f, 0.75f, 0.75f, 1.0f };
const float GLVolume::OUTSIDE_COLOR[4] = { 0.0f, 0.38f, 0.8f, 1.0f };
const float GLVolume::SELECTED_OUTSIDE_COLOR[4] = { 0.19f, 0.58f, 1.0f, 1.0f };
const float GLVolume::DISABLED_COLOR[4] = { 0.25f, 0.25f, 0.25f, 1.0f };
const float GLVolume::MODEL_COLOR[4][4] = {
{ 1.0f, 1.0f, 0.0f, 1.f },
{ 1.0f, 0.5f, 0.5f, 1.f },
{ 0.5f, 1.0f, 0.5f, 1.f },
{ 0.5f, 0.5f, 1.0f, 1.f }
};
const float GLVolume::SLA_SUPPORT_COLOR[4] = { 0.75f, 0.75f, 0.75f, 1.0f };
const float GLVolume::SLA_PAD_COLOR[4] = { 0.0f, 0.2f, 0.0f, 1.0f };
const float GLVolume::NEUTRAL_COLOR[4] = { 0.9f, 0.9f, 0.9f, 1.0f };
GLVolume::GLVolume(float r, float g, float b, float a)
: m_transformed_bounding_box_dirty(true)
, m_sla_shift_z(0.0)
, m_transformed_convex_hull_bounding_box_dirty(true)
// geometry_id == 0 -> invalid
, geometry_id(std::pair<size_t, size_t>(0, 0))
, extruder_id(0)
, selected(false)
, disabled(false)
, printable(true)
, is_active(true)
, zoom_to_volumes(true)
, shader_outside_printer_detection_enabled(false)
, is_outside(false)
, hover(HS_None)
, is_modifier(false)
, is_wipe_tower(false)
, is_extrusion_path(false)
, force_transparent(false)
, force_native_color(false)
, force_neutral_color(false)
, tverts_range(0, size_t(-1))
, qverts_range(0, size_t(-1))
{
color[0] = r;
color[1] = g;
color[2] = b;
color[3] = a;
set_render_color(r, g, b, a);
}
void GLVolume::set_render_color(float r, float g, float b, float a)
{
render_color[0] = r;
render_color[1] = g;
render_color[2] = b;
render_color[3] = a;
}
void GLVolume::set_render_color(const float* rgba, unsigned int size)
{
::memcpy((void*)render_color, (const void*)rgba, (size_t)(std::min((unsigned int)4, size) * sizeof(float)));
}
void GLVolume::set_render_color()
{
#if ENABLE_ALLOW_NEGATIVE_Z
bool outside = is_outside || is_below_printbed();
#endif // ENABLE_ALLOW_NEGATIVE_Z
if (force_native_color || force_neutral_color) {
#if ENABLE_ALLOW_NEGATIVE_Z
if (outside && shader_outside_printer_detection_enabled)
#else
if (is_outside && shader_outside_printer_detection_enabled)
#endif // ENABLE_ALLOW_NEGATIVE_Z
set_render_color(OUTSIDE_COLOR, 4);
else {
if (force_native_color)
set_render_color(color, 4);
else
set_render_color(NEUTRAL_COLOR, 4);
}
}
else {
if (hover == HS_Select)
set_render_color(HOVER_SELECT_COLOR, 4);
else if (hover == HS_Deselect)
set_render_color(HOVER_DESELECT_COLOR, 4);
else if (selected)
#if ENABLE_ALLOW_NEGATIVE_Z
set_render_color(outside ? SELECTED_OUTSIDE_COLOR : SELECTED_COLOR, 4);
#else
set_render_color(is_outside ? SELECTED_OUTSIDE_COLOR : SELECTED_COLOR, 4);
#endif // ENABLE_ALLOW_NEGATIVE_Z
else if (disabled)
set_render_color(DISABLED_COLOR, 4);
#if ENABLE_ALLOW_NEGATIVE_Z
else if (outside && shader_outside_printer_detection_enabled)
#else
else if (is_outside && shader_outside_printer_detection_enabled)
#endif // ENABLE_ALLOW_NEGATIVE_Z
set_render_color(OUTSIDE_COLOR, 4);
else
set_render_color(color, 4);
}
if (!printable) {
render_color[0] /= 4;
render_color[1] /= 4;
render_color[2] /= 4;
}
if (force_transparent)
render_color[3] = color[3];
}
void GLVolume::set_color_from_model_volume(const ModelVolume *model_volume)
{
if (model_volume->is_negative_volume()) {
color[0] = 0.2f;
color[1] = 0.2f;
color[2] = 0.2f;
}
else if (model_volume->is_modifier()) {
color[0] = 0.2f;
color[1] = 1.0f;
color[2] = 0.2f;
}
else if (model_volume->is_support_blocker()) {
color[0] = 1.0f;
color[1] = 0.2f;
color[2] = 0.2f;
}
else if (model_volume->is_support_enforcer()) {
color[0] = 0.2f;
color[1] = 0.2f;
color[2] = 1.0f;
}
color[3] = model_volume->is_model_part() ? 1.f : 0.5f;
}
Transform3d GLVolume::world_matrix() const
{
Transform3d m = m_instance_transformation.get_matrix() * m_volume_transformation.get_matrix();
m.translation()(2) += m_sla_shift_z;
return m;
}
bool GLVolume::is_left_handed() const
{
const Vec3d &m1 = m_instance_transformation.get_mirror();
const Vec3d &m2 = m_volume_transformation.get_mirror();
return m1.x() * m1.y() * m1.z() * m2.x() * m2.y() * m2.z() < 0.;
}
const BoundingBoxf3& GLVolume::transformed_bounding_box() const
{
const BoundingBoxf3& box = bounding_box();
assert(box.defined || box.min(0) >= box.max(0) || box.min(1) >= box.max(1) || box.min(2) >= box.max(2));
BoundingBoxf3* transformed_bounding_box = const_cast<BoundingBoxf3*>(&m_transformed_bounding_box);
bool* transformed_bounding_box_dirty = const_cast<bool*>(&m_transformed_bounding_box_dirty);
if (*transformed_bounding_box_dirty) {
*transformed_bounding_box = box.transformed(world_matrix());
*transformed_bounding_box_dirty = false;
}
return *transformed_bounding_box;
}
const BoundingBoxf3& GLVolume::transformed_convex_hull_bounding_box() const
{
BoundingBoxf3* transformed_convex_hull_bounding_box = const_cast<BoundingBoxf3*>(&m_transformed_convex_hull_bounding_box);
bool* transformed_convex_hull_bounding_box_dirty = const_cast<bool*>(&m_transformed_convex_hull_bounding_box_dirty);
if (*transformed_convex_hull_bounding_box_dirty) {
*transformed_convex_hull_bounding_box = this->transformed_convex_hull_bounding_box(world_matrix());
*transformed_convex_hull_bounding_box_dirty = false;
}
return *transformed_convex_hull_bounding_box;
}
BoundingBoxf3 GLVolume::transformed_convex_hull_bounding_box(const Transform3d &trafo) const
{
return (m_convex_hull && m_convex_hull->stl.stats.number_of_facets > 0) ?
m_convex_hull->transformed_bounding_box(trafo) :
bounding_box().transformed(trafo);
}
void GLVolume::set_range(double min_z, double max_z)
{
this->qverts_range.first = 0;
this->qverts_range.second = this->indexed_vertex_array.quad_indices_size;
this->tverts_range.first = 0;
this->tverts_range.second = this->indexed_vertex_array.triangle_indices_size;
if (! this->print_zs.empty()) {
// The Z layer range is specified.
// First test whether the Z span of this object is not out of (min_z, max_z) completely.
if (this->print_zs.front() > max_z || this->print_zs.back() < min_z) {
this->qverts_range.second = 0;
this->tverts_range.second = 0;
} else {
// Then find the lowest layer to be displayed.
size_t i = 0;
for (; i < this->print_zs.size() && this->print_zs[i] < min_z; ++ i);
if (i == this->print_zs.size()) {
// This shall not happen.
this->qverts_range.second = 0;
this->tverts_range.second = 0;
} else {
// Remember start of the layer.
this->qverts_range.first = this->offsets[i * 2];
this->tverts_range.first = this->offsets[i * 2 + 1];
// Some layers are above $min_z. Which?
for (; i < this->print_zs.size() && this->print_zs[i] <= max_z; ++ i);
if (i < this->print_zs.size()) {
this->qverts_range.second = this->offsets[i * 2];
this->tverts_range.second = this->offsets[i * 2 + 1];
}
}
}
}
}
void GLVolume::render() const
{
if (!is_active)
return;
if (this->is_left_handed())
glFrontFace(GL_CW);
glsafe(::glCullFace(GL_BACK));
glsafe(::glPushMatrix());
glsafe(::glMultMatrixd(world_matrix().data()));
this->indexed_vertex_array.render(this->tverts_range, this->qverts_range);
glsafe(::glPopMatrix());
if (this->is_left_handed())
glFrontFace(GL_CCW);
}
bool GLVolume::is_sla_support() const { return this->composite_id.volume_id == -int(slaposSupportTree); }
bool GLVolume::is_sla_pad() const { return this->composite_id.volume_id == -int(slaposPad); }
#if ENABLE_ALLOW_NEGATIVE_Z
bool GLVolume::is_sinking() const
{
#if DISABLE_ALLOW_NEGATIVE_Z_FOR_SLA
if (is_modifier || GUI::wxGetApp().preset_bundle->printers.get_edited_preset().printer_technology() == ptSLA)
#else
if (is_modifier)
#endif // DISABLE_ALLOW_NEGATIVE_Z_FOR_SLA
return false;
const BoundingBoxf3& box = transformed_convex_hull_bounding_box();
return box.min.z() < SINKING_Z_THRESHOLD && box.max.z() >= SINKING_Z_THRESHOLD;
}
bool GLVolume::is_below_printbed() const
{
return transformed_convex_hull_bounding_box().max(2) < 0.0;
}
#endif // ENABLE_ALLOW_NEGATIVE_Z
std::vector<int> GLVolumeCollection::load_object(
const ModelObject *model_object,
int obj_idx,
const std::vector<int> &instance_idxs,
const std::string &color_by,
bool opengl_initialized)
{
std::vector<int> volumes_idx;
for (int volume_idx = 0; volume_idx < int(model_object->volumes.size()); ++volume_idx)
for (int instance_idx : instance_idxs)
volumes_idx.emplace_back(this->GLVolumeCollection::load_object_volume(model_object, obj_idx, volume_idx, instance_idx, color_by, opengl_initialized));
return volumes_idx;
}
int GLVolumeCollection::load_object_volume(
const ModelObject *model_object,
int obj_idx,
int volume_idx,
int instance_idx,
const std::string &color_by,
bool opengl_initialized)
{
const ModelVolume *model_volume = model_object->volumes[volume_idx];
const int extruder_id = model_volume->extruder_id();
const ModelInstance *instance = model_object->instances[instance_idx];
const TriangleMesh &mesh = model_volume->mesh();
float color[4];
memcpy(color, GLVolume::MODEL_COLOR[((color_by == "volume") ? volume_idx : obj_idx) % 4], sizeof(float) * 3);
/* if (model_volume->is_support_blocker()) {
color[0] = 1.0f;
color[1] = 0.2f;
color[2] = 0.2f;
} else if (model_volume->is_support_enforcer()) {
color[0] = 0.2f;
color[1] = 0.2f;
color[2] = 1.0f;
}
color[3] = model_volume->is_model_part() ? 1.f : 0.5f; */
color[3] = model_volume->is_model_part() ? 1.f : 0.5f;
this->volumes.emplace_back(new GLVolume(color));
GLVolume& v = *this->volumes.back();
v.set_color_from_model_volume(model_volume);
#if ENABLE_SMOOTH_NORMALS
v.indexed_vertex_array.load_mesh(mesh, true);
#else
v.indexed_vertex_array.load_mesh(mesh);
#endif // ENABLE_SMOOTH_NORMALS
v.indexed_vertex_array.finalize_geometry(opengl_initialized);
v.composite_id = GLVolume::CompositeID(obj_idx, volume_idx, instance_idx);
if (model_volume->is_model_part())
{
// GLVolume will reference a convex hull from model_volume!
v.set_convex_hull(model_volume->get_convex_hull_shared_ptr());
if (extruder_id != -1)
v.extruder_id = extruder_id;
}
v.is_modifier = !model_volume->is_model_part();
v.shader_outside_printer_detection_enabled = model_volume->is_model_part();
v.set_instance_transformation(instance->get_transformation());
v.set_volume_transformation(model_volume->get_transformation());
return int(this->volumes.size() - 1);
}
// Load SLA auxiliary GLVolumes (for support trees or pad).
// This function produces volumes for multiple instances in a single shot,
// as some object specific mesh conversions may be expensive.
void GLVolumeCollection::load_object_auxiliary(
const SLAPrintObject *print_object,
int obj_idx,
// pairs of <instance_idx, print_instance_idx>
const std::vector<std::pair<size_t, size_t>>& instances,
SLAPrintObjectStep milestone,
// Timestamp of the last change of the milestone
size_t timestamp,
bool opengl_initialized)
{
assert(print_object->is_step_done(milestone));
Transform3d mesh_trafo_inv = print_object->trafo().inverse();
// Get the support mesh.
TriangleMesh mesh = print_object->get_mesh(milestone);
mesh.transform(mesh_trafo_inv);
// Convex hull is required for out of print bed detection.
TriangleMesh convex_hull = mesh.convex_hull_3d();
for (const std::pair<size_t, size_t>& instance_idx : instances) {
const ModelInstance& model_instance = *print_object->model_object()->instances[instance_idx.first];
this->volumes.emplace_back(new GLVolume((milestone == slaposPad) ? GLVolume::SLA_PAD_COLOR : GLVolume::SLA_SUPPORT_COLOR));
GLVolume& v = *this->volumes.back();
#if ENABLE_SMOOTH_NORMALS
v.indexed_vertex_array.load_mesh(mesh, true);
#else
v.indexed_vertex_array.load_mesh(mesh);
#endif // ENABLE_SMOOTH_NORMALS
v.indexed_vertex_array.finalize_geometry(opengl_initialized);
v.composite_id = GLVolume::CompositeID(obj_idx, -int(milestone), (int)instance_idx.first);
v.geometry_id = std::pair<size_t, size_t>(timestamp, model_instance.id().id);
// Create a copy of the convex hull mesh for each instance. Use a move operator on the last instance.
if (&instance_idx == &instances.back())
v.set_convex_hull(std::move(convex_hull));
else
v.set_convex_hull(convex_hull);
v.is_modifier = false;
v.shader_outside_printer_detection_enabled = (milestone == slaposSupportTree);
v.set_instance_transformation(model_instance.get_transformation());
// Leave the volume transformation at identity.
// v.set_volume_transformation(model_volume->get_transformation());
}
}
int GLVolumeCollection::load_wipe_tower_preview(
int obj_idx, float pos_x, float pos_y, float width, float depth, float height,
float rotation_angle, bool size_unknown, float brim_width, bool opengl_initialized)
{
if (depth < 0.01f)
return int(this->volumes.size() - 1);
if (height == 0.0f)
height = 0.1f;
TriangleMesh mesh;
float color[4] = { 0.5f, 0.5f, 0.0f, 1.f };
// In case we don't know precise dimensions of the wipe tower yet, we'll draw
// the box with different color with one side jagged:
if (size_unknown) {
color[0] = 0.9f;
color[1] = 0.6f;
// Too narrow tower would interfere with the teeth. The estimate is not precise anyway.
depth = std::max(depth, 10.f);
float min_width = 30.f;
// We'll now create the box with jagged edge. y-coordinates of the pre-generated model
// are shifted so that the front edge has y=0 and centerline of the back edge has y=depth:
Pointf3s points;
std::vector<Vec3i> facets;
float out_points_idx[][3] = { { 0, -depth, 0 }, { 0, 0, 0 }, { 38.453f, 0, 0 }, { 61.547f, 0, 0 }, { 100.0f, 0, 0 }, { 100.0f, -depth, 0 }, { 55.7735f, -10.0f, 0 }, { 44.2265f, 10.0f, 0 },
{ 38.453f, 0, 1 }, { 0, 0, 1 }, { 0, -depth, 1 }, { 100.0f, -depth, 1 }, { 100.0f, 0, 1 }, { 61.547f, 0, 1 }, { 55.7735f, -10.0f, 1 }, { 44.2265f, 10.0f, 1 } };
int out_facets_idx[][3] = { { 0, 1, 2 }, { 3, 4, 5 }, { 6, 5, 0 }, { 3, 5, 6 }, { 6, 2, 7 }, { 6, 0, 2 }, { 8, 9, 10 }, { 11, 12, 13 }, { 10, 11, 14 }, { 14, 11, 13 }, { 15, 8, 14 },
{8, 10, 14}, {3, 12, 4}, {3, 13, 12}, {6, 13, 3}, {6, 14, 13}, {7, 14, 6}, {7, 15, 14}, {2, 15, 7}, {2, 8, 15}, {1, 8, 2}, {1, 9, 8},
{0, 9, 1}, {0, 10, 9}, {5, 10, 0}, {5, 11, 10}, {4, 11, 5}, {4, 12, 11} };
for (int i = 0; i < 16; ++i)
points.emplace_back(out_points_idx[i][0] / (100.f / min_width),
out_points_idx[i][1] + depth, out_points_idx[i][2]);
for (int i = 0; i < 28; ++i)
facets.emplace_back(out_facets_idx[i][0],
out_facets_idx[i][1],
out_facets_idx[i][2]);
TriangleMesh tooth_mesh(points, facets);
// We have the mesh ready. It has one tooth and width of min_width. We will now
// append several of these together until we are close to the required width
// of the block. Than we can scale it precisely.
size_t n = std::max(1, int(width / min_width)); // How many shall be merged?
for (size_t i = 0; i < n; ++i) {
mesh.merge(tooth_mesh);
tooth_mesh.translate(min_width, 0.f, 0.f);
}
mesh.scale(Vec3d(width / (n * min_width), 1.f, height)); // Scaling to proper width
}
else
mesh = make_cube(width, depth, height);
// We'll make another mesh to show the brim (fixed layer height):
TriangleMesh brim_mesh = make_cube(width + 2.f * brim_width, depth + 2.f * brim_width, 0.2f);
brim_mesh.translate(-brim_width, -brim_width, 0.f);
mesh.merge(brim_mesh);
this->volumes.emplace_back(new GLVolume(color));
GLVolume& v = *this->volumes.back();
v.indexed_vertex_array.load_mesh(mesh);
v.indexed_vertex_array.finalize_geometry(opengl_initialized);
v.set_volume_offset(Vec3d(pos_x, pos_y, 0.0));
v.set_volume_rotation(Vec3d(0., 0., (M_PI / 180.) * rotation_angle));
v.composite_id = GLVolume::CompositeID(obj_idx, 0, 0);
v.geometry_id.first = 0;
v.geometry_id.second = wipe_tower_instance_id().id;
v.is_wipe_tower = true;
v.shader_outside_printer_detection_enabled = !size_unknown;
return int(this->volumes.size() - 1);
}
GLVolume* GLVolumeCollection::new_toolpath_volume(const float *rgba, size_t reserve_vbo_floats)
{
GLVolume *out = new_nontoolpath_volume(rgba, reserve_vbo_floats);
out->is_extrusion_path = true;
return out;
}
GLVolume* GLVolumeCollection::new_nontoolpath_volume(const float *rgba, size_t reserve_vbo_floats)
{
GLVolume *out = new GLVolume(rgba);
out->is_extrusion_path = false;
// Reserving number of vertices (3x position + 3x color)
out->indexed_vertex_array.reserve(reserve_vbo_floats / 6);
this->volumes.emplace_back(out);
return out;
}
GLVolumeWithIdAndZList volumes_to_render(const GLVolumePtrs& volumes, GLVolumeCollection::ERenderType type, const Transform3d& view_matrix, std::function<bool(const GLVolume&)> filter_func)
{
GLVolumeWithIdAndZList list;
list.reserve(volumes.size());
for (unsigned int i = 0; i < (unsigned int)volumes.size(); ++i)
{
GLVolume* volume = volumes[i];
bool is_transparent = (volume->render_color[3] < 1.0f);
if ((((type == GLVolumeCollection::Opaque) && !is_transparent) ||
((type == GLVolumeCollection::Transparent) && is_transparent) ||
(type == GLVolumeCollection::All)) &&
(! filter_func || filter_func(*volume)))
list.emplace_back(std::make_pair(volume, std::make_pair(i, 0.0)));
}
if ((type == GLVolumeCollection::Transparent) && (list.size() > 1))
{
for (GLVolumeWithIdAndZ& volume : list)
{
volume.second.second = volume.first->bounding_box().transformed(view_matrix * volume.first->world_matrix()).max(2);
}
std::sort(list.begin(), list.end(),
[](const GLVolumeWithIdAndZ& v1, const GLVolumeWithIdAndZ& v2) -> bool { return v1.second.second < v2.second.second; }
);
}
else if ((type == GLVolumeCollection::Opaque) && (list.size() > 1))
{
std::sort(list.begin(), list.end(),
[](const GLVolumeWithIdAndZ& v1, const GLVolumeWithIdAndZ& v2) -> bool { return v1.first->selected && !v2.first->selected; }
);
}
return list;
}
void GLVolumeCollection::render(GLVolumeCollection::ERenderType type, bool disable_cullface, const Transform3d& view_matrix, std::function<bool(const GLVolume&)> filter_func) const
{
GLShaderProgram* shader = GUI::wxGetApp().get_current_shader();
if (shader == nullptr)
return;
glsafe(::glEnable(GL_BLEND));
glsafe(::glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA));
glsafe(::glCullFace(GL_BACK));
if (disable_cullface)
glsafe(::glDisable(GL_CULL_FACE));
glsafe(::glEnableClientState(GL_VERTEX_ARRAY));
glsafe(::glEnableClientState(GL_NORMAL_ARRAY));
shader->set_uniform("print_box.min", m_print_box_min, 3);
shader->set_uniform("print_box.max", m_print_box_max, 3);
shader->set_uniform("z_range", m_z_range, 2);
shader->set_uniform("clipping_plane", m_clipping_plane, 4);
shader->set_uniform("slope.normal_z", m_slope.normal_z);
#if ENABLE_ENVIRONMENT_MAP
unsigned int environment_texture_id = GUI::wxGetApp().plater()->get_environment_texture_id();
bool use_environment_texture = environment_texture_id > 0 && GUI::wxGetApp().app_config->get("use_environment_map") == "1";
shader->set_uniform("use_environment_tex", use_environment_texture);
if (use_environment_texture)
glsafe(::glBindTexture(GL_TEXTURE_2D, environment_texture_id));
#endif // ENABLE_ENVIRONMENT_MAP
glcheck();
GLVolumeWithIdAndZList to_render = volumes_to_render(this->volumes, type, view_matrix, filter_func);
for (GLVolumeWithIdAndZ& volume : to_render) {
volume.first->set_render_color();
shader->set_uniform("uniform_color", volume.first->render_color, 4);
shader->set_uniform("print_box.actived", volume.first->shader_outside_printer_detection_enabled);
shader->set_uniform("print_box.volume_world_matrix", volume.first->world_matrix());
shader->set_uniform("slope.actived", m_slope.active && !volume.first->is_modifier && !volume.first->is_wipe_tower);
shader->set_uniform("slope.volume_world_normal_matrix", static_cast<Matrix3f>(volume.first->world_matrix().matrix().block(0, 0, 3, 3).inverse().transpose().cast<float>()));
#if ENABLE_ALLOW_NEGATIVE_Z
shader->set_uniform("sinking", volume.first->is_sinking());
#endif // ENABLE_ALLOW_NEGATIVE_Z
volume.first->render();
}
#if ENABLE_ENVIRONMENT_MAP
if (use_environment_texture)
glsafe(::glBindTexture(GL_TEXTURE_2D, 0));
#endif // ENABLE_ENVIRONMENT_MAP
glsafe(::glBindBuffer(GL_ARRAY_BUFFER, 0));
glsafe(::glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0));
glsafe(::glDisableClientState(GL_VERTEX_ARRAY));
glsafe(::glDisableClientState(GL_NORMAL_ARRAY));
if (disable_cullface)
glsafe(::glEnable(GL_CULL_FACE));
glsafe(::glDisable(GL_BLEND));
}
bool GLVolumeCollection::check_outside_state(const DynamicPrintConfig* config, ModelInstanceEPrintVolumeState* out_state) const
{
if (config == nullptr)
return false;
const ConfigOptionPoints* opt = dynamic_cast<const ConfigOptionPoints*>(config->option("bed_shape"));
if (opt == nullptr)
return false;
BoundingBox bed_box_2D = get_extents(Polygon::new_scale(opt->values));
BoundingBoxf3 print_volume({ unscale<double>(bed_box_2D.min(0)), unscale<double>(bed_box_2D.min(1)), 0.0 }, { unscale<double>(bed_box_2D.max(0)), unscale<double>(bed_box_2D.max(1)), config->opt_float("max_print_height") });
// Allow the objects to protrude below the print bed
print_volume.min(2) = -1e10;
print_volume.min(0) -= BedEpsilon;
print_volume.min(1) -= BedEpsilon;
print_volume.max(0) += BedEpsilon;
print_volume.max(1) += BedEpsilon;
ModelInstanceEPrintVolumeState state = ModelInstancePVS_Inside;
bool contained_min_one = false;
for (GLVolume* volume : this->volumes) {
if (volume == nullptr || volume->is_modifier || (volume->is_wipe_tower && !volume->shader_outside_printer_detection_enabled) || (volume->composite_id.volume_id < 0 && !volume->shader_outside_printer_detection_enabled))
continue;
const BoundingBoxf3& bb = volume->transformed_convex_hull_bounding_box();
bool contained = print_volume.contains(bb);
volume->is_outside = !contained;
if (!volume->printable)
continue;
if (contained)
contained_min_one = true;
if (state == ModelInstancePVS_Inside && volume->is_outside)
state = ModelInstancePVS_Fully_Outside;
if (state == ModelInstancePVS_Fully_Outside && volume->is_outside && print_volume.intersects(bb))
state = ModelInstancePVS_Partly_Outside;
}
if (out_state != nullptr)
*out_state = state;
return contained_min_one;
}
bool GLVolumeCollection::check_outside_state(const DynamicPrintConfig* config, bool& partlyOut, bool& fullyOut) const
{
if (config == nullptr)
return false;
const ConfigOptionPoints* opt = dynamic_cast<const ConfigOptionPoints*>(config->option("bed_shape"));
if (opt == nullptr)
return false;
BoundingBox bed_box_2D = get_extents(Polygon::new_scale(opt->values));
BoundingBoxf3 print_volume(Vec3d(unscale<double>(bed_box_2D.min(0)), unscale<double>(bed_box_2D.min(1)), 0.0), Vec3d(unscale<double>(bed_box_2D.max(0)), unscale<double>(bed_box_2D.max(1)), config->opt_float("max_print_height")));
// Allow the objects to protrude below the print bed
print_volume.min(2) = -1e10;
print_volume.min(0) -= BedEpsilon;
print_volume.min(1) -= BedEpsilon;
print_volume.max(0) += BedEpsilon;
print_volume.max(1) += BedEpsilon;
bool contained_min_one = false;
partlyOut = false;
fullyOut = false;
for (GLVolume* volume : this->volumes) {
if (volume == nullptr || volume->is_modifier || (volume->is_wipe_tower && !volume->shader_outside_printer_detection_enabled) || (volume->composite_id.volume_id < 0 && !volume->shader_outside_printer_detection_enabled))
continue;
const BoundingBoxf3& bb = volume->transformed_convex_hull_bounding_box();
bool contained = print_volume.contains(bb);
volume->is_outside = !contained;
if (!volume->printable)
continue;
if (contained)
contained_min_one = true;
if (volume->is_outside) {
if (print_volume.intersects(bb))
partlyOut = true;
else
fullyOut = true;
}
}
/*
if (out_state != nullptr)
*out_state = state;
*/
return contained_min_one;
}
void GLVolumeCollection::reset_outside_state()
{
for (GLVolume* volume : this->volumes)
{
if (volume != nullptr)
volume->is_outside = false;
}
}
void GLVolumeCollection::update_colors_by_extruder(const DynamicPrintConfig* config)
{
static const float inv_255 = 1.0f / 255.0f;
struct Color
{
std::string text;
unsigned char rgb[3];
Color()
: text("")
{
rgb[0] = 255;
rgb[1] = 255;
rgb[2] = 255;
}
void set(const std::string& text, unsigned char* rgb)
{
this->text = text;
::memcpy((void*)this->rgb, (const void*)rgb, 3 * sizeof(unsigned char));
}
};
if (config == nullptr)
return;
const ConfigOptionStrings* extruders_opt = dynamic_cast<const ConfigOptionStrings*>(config->option("extruder_colour"));
if (extruders_opt == nullptr)
return;
const ConfigOptionStrings* filamemts_opt = dynamic_cast<const ConfigOptionStrings*>(config->option("filament_colour"));
if (filamemts_opt == nullptr)
return;
unsigned int colors_count = std::max((unsigned int)extruders_opt->values.size(), (unsigned int)filamemts_opt->values.size());
if (colors_count == 0)
return;
std::vector<Color> colors(colors_count);
unsigned char rgb[3];
for (unsigned int i = 0; i < colors_count; ++i)
{
const std::string& txt_color = config->opt_string("extruder_colour", i);
if (Slic3r::GUI::BitmapCache::parse_color(txt_color, rgb))
{
colors[i].set(txt_color, rgb);
}
else
{
const std::string& txt_color = config->opt_string("filament_colour", i);
if (Slic3r::GUI::BitmapCache::parse_color(txt_color, rgb))
colors[i].set(txt_color, rgb);
}
}
for (GLVolume* volume : volumes)
{
if ((volume == nullptr) || volume->is_modifier || volume->is_wipe_tower || (volume->volume_idx() < 0))
continue;
int extruder_id = volume->extruder_id - 1;
if ((extruder_id < 0) || ((int)colors.size() <= extruder_id))
extruder_id = 0;
const Color& color = colors[extruder_id];
if (!color.text.empty())
{
for (int i = 0; i < 3; ++i)
{
volume->color[i] = (float)color.rgb[i] * inv_255;
}
}
}
}
std::vector<double> GLVolumeCollection::get_current_print_zs(bool active_only) const
{
// Collect layer top positions of all volumes.
std::vector<double> print_zs;
for (GLVolume *vol : this->volumes)
{
if (!active_only || vol->is_active)
append(print_zs, vol->print_zs);
}
std::sort(print_zs.begin(), print_zs.end());
// Replace intervals of layers with similar top positions with their average value.
int n = int(print_zs.size());
int k = 0;
for (int i = 0; i < n;) {
int j = i + 1;
coordf_t zmax = print_zs[i] + EPSILON;
for (; j < n && print_zs[j] <= zmax; ++ j) ;
print_zs[k ++] = (j > i + 1) ? (0.5 * (print_zs[i] + print_zs[j - 1])) : print_zs[i];
i = j;
}
if (k < n)
print_zs.erase(print_zs.begin() + k, print_zs.end());
return print_zs;
}
size_t GLVolumeCollection::cpu_memory_used() const
{
size_t memsize = sizeof(*this) + this->volumes.capacity() * sizeof(GLVolume);
for (const GLVolume *volume : this->volumes)
memsize += volume->cpu_memory_used();
return memsize;
}
size_t GLVolumeCollection::gpu_memory_used() const
{
size_t memsize = 0;
for (const GLVolume *volume : this->volumes)
memsize += volume->gpu_memory_used();
return memsize;
}
std::string GLVolumeCollection::log_memory_info() const
{
return " (GLVolumeCollection RAM: " + format_memsize_MB(this->cpu_memory_used()) + " GPU: " + format_memsize_MB(this->gpu_memory_used()) + " Both: " + format_memsize_MB(this->gpu_memory_used()) + ")";
}
// caller is responsible for supplying NO lines with zero length
static void thick_lines_to_indexed_vertex_array(
const Lines &lines,
const std::vector<double> &widths,
const std::vector<double> &heights,
bool closed,
double top_z,
GLIndexedVertexArray &volume)
{
assert(! lines.empty());
if (lines.empty())
return;
#define LEFT 0
#define RIGHT 1
#define TOP 2
#define BOTTOM 3
// right, left, top, bottom
int idx_prev[4] = { -1, -1, -1, -1 };
double bottom_z_prev = 0.;
Vec2d b1_prev(Vec2d::Zero());
Vec2d v_prev(Vec2d::Zero());
int idx_initial[4] = { -1, -1, -1, -1 };
double width_initial = 0.;
double bottom_z_initial = 0.0;
double len_prev = 0.0;
// loop once more in case of closed loops
size_t lines_end = closed ? (lines.size() + 1) : lines.size();
for (size_t ii = 0; ii < lines_end; ++ ii) {
size_t i = (ii == lines.size()) ? 0 : ii;
const Line &line = lines[i];
double bottom_z = top_z - heights[i];
double middle_z = 0.5 * (top_z + bottom_z);
double width = widths[i];
bool is_first = (ii == 0);
bool is_last = (ii == lines_end - 1);
bool is_closing = closed && is_last;
Vec2d v = unscale(line.vector()).normalized();
double len = unscale<double>(line.length());
Vec2d a = unscale(line.a);
Vec2d b = unscale(line.b);
Vec2d a1 = a;
Vec2d a2 = a;
Vec2d b1 = b;
Vec2d b2 = b;
{
double dist = 0.5 * width; // scaled
double dx = dist * v(0);
double dy = dist * v(1);
a1 += Vec2d(+dy, -dx);
a2 += Vec2d(-dy, +dx);
b1 += Vec2d(+dy, -dx);
b2 += Vec2d(-dy, +dx);
}
// calculate new XY normals
Vec2d xy_right_normal = unscale(line.normal()).normalized();
int idx_a[4] = { 0, 0, 0, 0 }; // initialized to avoid warnings
int idx_b[4] = { 0, 0, 0, 0 }; // initialized to avoid warnings
int idx_last = int(volume.vertices_and_normals_interleaved.size() / 6);
bool bottom_z_different = bottom_z_prev != bottom_z;
bottom_z_prev = bottom_z;
if (!is_first && bottom_z_different)
{
// Found a change of the layer thickness -> Add a cap at the end of the previous segment.
volume.push_quad(idx_b[BOTTOM], idx_b[LEFT], idx_b[TOP], idx_b[RIGHT]);
}
// Share top / bottom vertices if possible.
if (is_first) {
idx_a[TOP] = idx_last++;
volume.push_geometry(a(0), a(1), top_z , 0., 0., 1.);
} else {
idx_a[TOP] = idx_prev[TOP];
}
if (is_first || bottom_z_different) {
// Start of the 1st line segment or a change of the layer thickness while maintaining the print_z.
idx_a[BOTTOM] = idx_last ++;
volume.push_geometry(a(0), a(1), bottom_z, 0., 0., -1.);
idx_a[LEFT ] = idx_last ++;
volume.push_geometry(a2(0), a2(1), middle_z, -xy_right_normal(0), -xy_right_normal(1), 0.0);
idx_a[RIGHT] = idx_last ++;
volume.push_geometry(a1(0), a1(1), middle_z, xy_right_normal(0), xy_right_normal(1), 0.0);
}
else {
idx_a[BOTTOM] = idx_prev[BOTTOM];
}
if (is_first) {
// Start of the 1st line segment.
width_initial = width;
bottom_z_initial = bottom_z;
memcpy(idx_initial, idx_a, sizeof(int) * 4);
} else {
// Continuing a previous segment.
// Share left / right vertices if possible.
double v_dot = v_prev.dot(v);
// To reduce gpu memory usage, we try to reuse vertices
// To reduce the visual artifacts, due to averaged normals, we allow to reuse vertices only when any of two adjacent edges
// is longer than a fixed threshold.
// The following value is arbitrary, it comes from tests made on a bunch of models showing the visual artifacts
double len_threshold = 2.5;
// Generate new vertices if the angle between adjacent edges is greater than 45 degrees or thresholds conditions are met
bool sharp = (v_dot < 0.707) || (len_prev > len_threshold) || (len > len_threshold);
if (sharp) {
if (!bottom_z_different)
{
// Allocate new left / right points for the start of this segment as these points will receive their own normals to indicate a sharp turn.
idx_a[RIGHT] = idx_last++;
volume.push_geometry(a1(0), a1(1), middle_z, xy_right_normal(0), xy_right_normal(1), 0.0);
idx_a[LEFT] = idx_last++;
volume.push_geometry(a2(0), a2(1), middle_z, -xy_right_normal(0), -xy_right_normal(1), 0.0);
if (cross2(v_prev, v) > 0.) {
// Right turn. Fill in the right turn wedge.
volume.push_triangle(idx_prev[RIGHT], idx_a[RIGHT], idx_prev[TOP]);
volume.push_triangle(idx_prev[RIGHT], idx_prev[BOTTOM], idx_a[RIGHT]);
}
else {
// Left turn. Fill in the left turn wedge.
volume.push_triangle(idx_prev[LEFT], idx_prev[TOP], idx_a[LEFT]);
volume.push_triangle(idx_prev[LEFT], idx_a[LEFT], idx_prev[BOTTOM]);
}
}
}
else
{
if (!bottom_z_different)
{
// The two successive segments are nearly collinear.
idx_a[LEFT ] = idx_prev[LEFT];
idx_a[RIGHT] = idx_prev[RIGHT];
}
}
if (is_closing) {
if (!sharp) {
if (!bottom_z_different)
{
// Closing a loop with smooth transition. Unify the closing left / right vertices.
memcpy(volume.vertices_and_normals_interleaved.data() + idx_initial[LEFT ] * 6, volume.vertices_and_normals_interleaved.data() + idx_prev[LEFT ] * 6, sizeof(float) * 6);
memcpy(volume.vertices_and_normals_interleaved.data() + idx_initial[RIGHT] * 6, volume.vertices_and_normals_interleaved.data() + idx_prev[RIGHT] * 6, sizeof(float) * 6);
volume.vertices_and_normals_interleaved.erase(volume.vertices_and_normals_interleaved.end() - 12, volume.vertices_and_normals_interleaved.end());
// Replace the left / right vertex indices to point to the start of the loop.
for (size_t u = volume.quad_indices.size() - 16; u < volume.quad_indices.size(); ++ u) {
if (volume.quad_indices[u] == idx_prev[LEFT])
volume.quad_indices[u] = idx_initial[LEFT];
else if (volume.quad_indices[u] == idx_prev[RIGHT])
volume.quad_indices[u] = idx_initial[RIGHT];
}
}
}
// This is the last iteration, only required to solve the transition.
break;
}
}
// Only new allocate top / bottom vertices, if not closing a loop.
if (is_closing) {
idx_b[TOP] = idx_initial[TOP];
} else {
idx_b[TOP] = idx_last ++;
volume.push_geometry(b(0), b(1), top_z , 0., 0., 1.);
}
if (is_closing && (width == width_initial) && (bottom_z == bottom_z_initial)) {
idx_b[BOTTOM] = idx_initial[BOTTOM];
} else {
idx_b[BOTTOM] = idx_last ++;
volume.push_geometry(b(0), b(1), bottom_z, 0., 0., -1.);
}
// Generate new vertices for the end of this line segment.
idx_b[LEFT ] = idx_last ++;
volume.push_geometry(b2(0), b2(1), middle_z, -xy_right_normal(0), -xy_right_normal(1), 0.0);
idx_b[RIGHT ] = idx_last ++;
volume.push_geometry(b1(0), b1(1), middle_z, xy_right_normal(0), xy_right_normal(1), 0.0);
memcpy(idx_prev, idx_b, 4 * sizeof(int));
bottom_z_prev = bottom_z;
b1_prev = b1;
v_prev = v;
len_prev = len;
if (bottom_z_different && (closed || (!is_first && !is_last)))
{
// Found a change of the layer thickness -> Add a cap at the beginning of this segment.
volume.push_quad(idx_a[BOTTOM], idx_a[RIGHT], idx_a[TOP], idx_a[LEFT]);
}
if (! closed) {
// Terminate open paths with caps.
if (is_first)
volume.push_quad(idx_a[BOTTOM], idx_a[RIGHT], idx_a[TOP], idx_a[LEFT]);
// We don't use 'else' because both cases are true if we have only one line.
if (is_last)
volume.push_quad(idx_b[BOTTOM], idx_b[LEFT], idx_b[TOP], idx_b[RIGHT]);
}
// Add quads for a straight hollow tube-like segment.
// bottom-right face
volume.push_quad(idx_a[BOTTOM], idx_b[BOTTOM], idx_b[RIGHT], idx_a[RIGHT]);
// top-right face
volume.push_quad(idx_a[RIGHT], idx_b[RIGHT], idx_b[TOP], idx_a[TOP]);
// top-left face
volume.push_quad(idx_a[TOP], idx_b[TOP], idx_b[LEFT], idx_a[LEFT]);
// bottom-left face
volume.push_quad(idx_a[LEFT], idx_b[LEFT], idx_b[BOTTOM], idx_a[BOTTOM]);
}
#undef LEFT
#undef RIGHT
#undef TOP
#undef BOTTOM
}
// caller is responsible for supplying NO lines with zero length
static void thick_lines_to_indexed_vertex_array(const Lines3& lines,
const std::vector<double>& widths,
const std::vector<double>& heights,
bool closed,
GLIndexedVertexArray& volume)
{
assert(!lines.empty());
if (lines.empty())
return;
#define LEFT 0
#define RIGHT 1
#define TOP 2
#define BOTTOM 3
// left, right, top, bottom
int idx_initial[4] = { -1, -1, -1, -1 };
int idx_prev[4] = { -1, -1, -1, -1 };
double z_prev = 0.0;
double len_prev = 0.0;
Vec3d n_right_prev = Vec3d::Zero();
Vec3d n_top_prev = Vec3d::Zero();
Vec3d unit_v_prev = Vec3d::Zero();
double width_initial = 0.0;
// new vertices around the line endpoints
// left, right, top, bottom
Vec3d a[4] = { Vec3d::Zero(), Vec3d::Zero(), Vec3d::Zero(), Vec3d::Zero() };
Vec3d b[4] = { Vec3d::Zero(), Vec3d::Zero(), Vec3d::Zero(), Vec3d::Zero() };
// loop once more in case of closed loops
size_t lines_end = closed ? (lines.size() + 1) : lines.size();
for (size_t ii = 0; ii < lines_end; ++ii)
{
size_t i = (ii == lines.size()) ? 0 : ii;
const Line3& line = lines[i];
double height = heights[i];
double width = widths[i];
Vec3d unit_v = unscale(line.vector()).normalized();
double len = unscale<double>(line.length());
Vec3d n_top = Vec3d::Zero();
Vec3d n_right = Vec3d::Zero();
if ((line.a(0) == line.b(0)) && (line.a(1) == line.b(1)))
{
// vertical segment
n_top = Vec3d::UnitY();
n_right = Vec3d::UnitX();
if (line.a(2) < line.b(2))
n_right = -n_right;
}
else
{
// horizontal segment
n_right = unit_v.cross(Vec3d::UnitZ()).normalized();
n_top = n_right.cross(unit_v).normalized();
}
Vec3d rl_displacement = 0.5 * width * n_right;
Vec3d tb_displacement = 0.5 * height * n_top;
Vec3d l_a = unscale(line.a);
Vec3d l_b = unscale(line.b);
a[RIGHT] = l_a + rl_displacement;
a[LEFT] = l_a - rl_displacement;
a[TOP] = l_a + tb_displacement;
a[BOTTOM] = l_a - tb_displacement;
b[RIGHT] = l_b + rl_displacement;
b[LEFT] = l_b - rl_displacement;
b[TOP] = l_b + tb_displacement;
b[BOTTOM] = l_b - tb_displacement;
Vec3d n_bottom = -n_top;
Vec3d n_left = -n_right;
int idx_a[4];
int idx_b[4];
int idx_last = int(volume.vertices_and_normals_interleaved.size() / 6);
bool z_different = (z_prev != l_a(2));
z_prev = l_b(2);
// Share top / bottom vertices if possible.
if (ii == 0)
{
idx_a[TOP] = idx_last++;
volume.push_geometry(a[TOP], n_top);
}
else
idx_a[TOP] = idx_prev[TOP];
if ((ii == 0) || z_different)
{
// Start of the 1st line segment or a change of the layer thickness while maintaining the print_z.
idx_a[BOTTOM] = idx_last++;
volume.push_geometry(a[BOTTOM], n_bottom);
idx_a[LEFT] = idx_last++;
volume.push_geometry(a[LEFT], n_left);
idx_a[RIGHT] = idx_last++;
volume.push_geometry(a[RIGHT], n_right);
}
else
idx_a[BOTTOM] = idx_prev[BOTTOM];
if (ii == 0)
{
// Start of the 1st line segment.
width_initial = width;
::memcpy(idx_initial, idx_a, sizeof(int) * 4);
}
else
{
// Continuing a previous segment.
// Share left / right vertices if possible.
double v_dot = unit_v_prev.dot(unit_v);
bool is_right_turn = n_top_prev.dot(unit_v_prev.cross(unit_v)) > 0.0;
// To reduce gpu memory usage, we try to reuse vertices
// To reduce the visual artifacts, due to averaged normals, we allow to reuse vertices only when any of two adjacent edges
// is longer than a fixed threshold.
// The following value is arbitrary, it comes from tests made on a bunch of models showing the visual artifacts
double len_threshold = 2.5;
// Generate new vertices if the angle between adjacent edges is greater than 45 degrees or thresholds conditions are met
bool is_sharp = (v_dot < 0.707) || (len_prev > len_threshold) || (len > len_threshold);
if (is_sharp)
{
// Allocate new left / right points for the start of this segment as these points will receive their own normals to indicate a sharp turn.
idx_a[RIGHT] = idx_last++;
volume.push_geometry(a[RIGHT], n_right);
idx_a[LEFT] = idx_last++;
volume.push_geometry(a[LEFT], n_left);
if (is_right_turn)
{
// Right turn. Fill in the right turn wedge.
volume.push_triangle(idx_prev[RIGHT], idx_a[RIGHT], idx_prev[TOP]);
volume.push_triangle(idx_prev[RIGHT], idx_prev[BOTTOM], idx_a[RIGHT]);
}
else
{
// Left turn. Fill in the left turn wedge.
volume.push_triangle(idx_prev[LEFT], idx_prev[TOP], idx_a[LEFT]);
volume.push_triangle(idx_prev[LEFT], idx_a[LEFT], idx_prev[BOTTOM]);
}
}
else
{
// The two successive segments are nearly collinear.
idx_a[LEFT] = idx_prev[LEFT];
idx_a[RIGHT] = idx_prev[RIGHT];
}
if (ii == lines.size())
{
if (!is_sharp)
{
// Closing a loop with smooth transition. Unify the closing left / right vertices.
::memcpy(volume.vertices_and_normals_interleaved.data() + idx_initial[LEFT] * 6, volume.vertices_and_normals_interleaved.data() + idx_prev[LEFT] * 6, sizeof(float) * 6);
::memcpy(volume.vertices_and_normals_interleaved.data() + idx_initial[RIGHT] * 6, volume.vertices_and_normals_interleaved.data() + idx_prev[RIGHT] * 6, sizeof(float) * 6);
volume.vertices_and_normals_interleaved.erase(volume.vertices_and_normals_interleaved.end() - 12, volume.vertices_and_normals_interleaved.end());
// Replace the left / right vertex indices to point to the start of the loop.
for (size_t u = volume.quad_indices.size() - 16; u < volume.quad_indices.size(); ++u)
{
if (volume.quad_indices[u] == idx_prev[LEFT])
volume.quad_indices[u] = idx_initial[LEFT];
else if (volume.quad_indices[u] == idx_prev[RIGHT])
volume.quad_indices[u] = idx_initial[RIGHT];
}
}
// This is the last iteration, only required to solve the transition.
break;
}
}
// Only new allocate top / bottom vertices, if not closing a loop.
if (closed && (ii + 1 == lines.size()))
idx_b[TOP] = idx_initial[TOP];
else
{
idx_b[TOP] = idx_last++;
volume.push_geometry(b[TOP], n_top);
}
if (closed && (ii + 1 == lines.size()) && (width == width_initial))
idx_b[BOTTOM] = idx_initial[BOTTOM];
else
{
idx_b[BOTTOM] = idx_last++;
volume.push_geometry(b[BOTTOM], n_bottom);
}
// Generate new vertices for the end of this line segment.
idx_b[LEFT] = idx_last++;
volume.push_geometry(b[LEFT], n_left);
idx_b[RIGHT] = idx_last++;
volume.push_geometry(b[RIGHT], n_right);
::memcpy(idx_prev, idx_b, 4 * sizeof(int));
n_right_prev = n_right;
n_top_prev = n_top;
unit_v_prev = unit_v;
len_prev = len;
if (!closed)
{
// Terminate open paths with caps.
if (i == 0)
volume.push_quad(idx_a[BOTTOM], idx_a[RIGHT], idx_a[TOP], idx_a[LEFT]);
// We don't use 'else' because both cases are true if we have only one line.
if (i + 1 == lines.size())
volume.push_quad(idx_b[BOTTOM], idx_b[LEFT], idx_b[TOP], idx_b[RIGHT]);
}
// Add quads for a straight hollow tube-like segment.
// bottom-right face
volume.push_quad(idx_a[BOTTOM], idx_b[BOTTOM], idx_b[RIGHT], idx_a[RIGHT]);
// top-right face
volume.push_quad(idx_a[RIGHT], idx_b[RIGHT], idx_b[TOP], idx_a[TOP]);
// top-left face
volume.push_quad(idx_a[TOP], idx_b[TOP], idx_b[LEFT], idx_a[LEFT]);
// bottom-left face
volume.push_quad(idx_a[LEFT], idx_b[LEFT], idx_b[BOTTOM], idx_a[BOTTOM]);
}
#undef LEFT
#undef RIGHT
#undef TOP
#undef BOTTOM
}
static void point_to_indexed_vertex_array(const Vec3crd& point,
double width,
double height,
GLIndexedVertexArray& volume)
{
// builds a double piramid, with vertices on the local axes, around the point
Vec3d center = unscale(point);
double scale_factor = 1.0;
double w = scale_factor * width;
double h = scale_factor * height;
// new vertices ids
int idx_last = int(volume.vertices_and_normals_interleaved.size() / 6);
int idxs[6];
for (int i = 0; i < 6; ++i)
{
idxs[i] = idx_last + i;
}
Vec3d displacement_x(w, 0.0, 0.0);
Vec3d displacement_y(0.0, w, 0.0);
Vec3d displacement_z(0.0, 0.0, h);
Vec3d unit_x(1.0, 0.0, 0.0);
Vec3d unit_y(0.0, 1.0, 0.0);
Vec3d unit_z(0.0, 0.0, 1.0);
// vertices
volume.push_geometry(center - displacement_x, -unit_x); // idxs[0]
volume.push_geometry(center + displacement_x, unit_x); // idxs[1]
volume.push_geometry(center - displacement_y, -unit_y); // idxs[2]
volume.push_geometry(center + displacement_y, unit_y); // idxs[3]
volume.push_geometry(center - displacement_z, -unit_z); // idxs[4]
volume.push_geometry(center + displacement_z, unit_z); // idxs[5]
// top piramid faces
volume.push_triangle(idxs[0], idxs[2], idxs[5]);
volume.push_triangle(idxs[2], idxs[1], idxs[5]);
volume.push_triangle(idxs[1], idxs[3], idxs[5]);
volume.push_triangle(idxs[3], idxs[0], idxs[5]);
// bottom piramid faces
volume.push_triangle(idxs[2], idxs[0], idxs[4]);
volume.push_triangle(idxs[1], idxs[2], idxs[4]);
volume.push_triangle(idxs[3], idxs[1], idxs[4]);
volume.push_triangle(idxs[0], idxs[3], idxs[4]);
}
void _3DScene::thick_lines_to_verts(
const Lines &lines,
const std::vector<double> &widths,
const std::vector<double> &heights,
bool closed,
double top_z,
GLVolume &volume)
{
thick_lines_to_indexed_vertex_array(lines, widths, heights, closed, top_z, volume.indexed_vertex_array);
}
void _3DScene::thick_lines_to_verts(const Lines3& lines,
const std::vector<double>& widths,
const std::vector<double>& heights,
bool closed,
GLVolume& volume)
{
thick_lines_to_indexed_vertex_array(lines, widths, heights, closed, volume.indexed_vertex_array);
}
static void thick_point_to_verts(const Vec3crd& point,
double width,
double height,
GLVolume& volume)
{
point_to_indexed_vertex_array(point, width, height, volume.indexed_vertex_array);
}
void _3DScene::extrusionentity_to_verts(const Polyline &polyline, float width, float height, float print_z, GLVolume& volume)
{
if (polyline.size() >= 2) {
size_t num_segments = polyline.size() - 1;
thick_lines_to_verts(polyline.lines(), std::vector<double>(num_segments, width), std::vector<double>(num_segments, height), false, print_z, volume);
}
}
// Fill in the qverts and tverts with quads and triangles for the extrusion_path.
void _3DScene::extrusionentity_to_verts(const ExtrusionPath &extrusion_path, float print_z, GLVolume &volume)
{
extrusionentity_to_verts(extrusion_path.polyline, extrusion_path.width, extrusion_path.height, print_z, volume);
}
// Fill in the qverts and tverts with quads and triangles for the extrusion_path.
void _3DScene::extrusionentity_to_verts(const ExtrusionPath &extrusion_path, float print_z, const Point &copy, GLVolume &volume)
{
Polyline polyline = extrusion_path.polyline;
polyline.remove_duplicate_points();
polyline.translate(copy);
Lines lines = polyline.lines();
std::vector<double> widths(lines.size(), extrusion_path.width);
std::vector<double> heights(lines.size(), extrusion_path.height);
thick_lines_to_verts(lines, widths, heights, false, print_z, volume);
}
// Fill in the qverts and tverts with quads and triangles for the extrusion_loop.
void _3DScene::extrusionentity_to_verts(const ExtrusionLoop &extrusion_loop, float print_z, const Point &copy, GLVolume &volume)
{
Lines lines;
std::vector<double> widths;
std::vector<double> heights;
for (const ExtrusionPath &extrusion_path : extrusion_loop.paths) {
Polyline polyline = extrusion_path.polyline;
polyline.remove_duplicate_points();
polyline.translate(copy);
Lines lines_this = polyline.lines();
append(lines, lines_this);
widths.insert(widths.end(), lines_this.size(), extrusion_path.width);
heights.insert(heights.end(), lines_this.size(), extrusion_path.height);
}
thick_lines_to_verts(lines, widths, heights, true, print_z, volume);
}
// Fill in the qverts and tverts with quads and triangles for the extrusion_multi_path.
void _3DScene::extrusionentity_to_verts(const ExtrusionMultiPath &extrusion_multi_path, float print_z, const Point &copy, GLVolume &volume)
{
Lines lines;
std::vector<double> widths;
std::vector<double> heights;
for (const ExtrusionPath &extrusion_path : extrusion_multi_path.paths) {
Polyline polyline = extrusion_path.polyline;
polyline.remove_duplicate_points();
polyline.translate(copy);
Lines lines_this = polyline.lines();
append(lines, lines_this);
widths.insert(widths.end(), lines_this.size(), extrusion_path.width);
heights.insert(heights.end(), lines_this.size(), extrusion_path.height);
}
thick_lines_to_verts(lines, widths, heights, false, print_z, volume);
}
void _3DScene::extrusionentity_to_verts(const ExtrusionEntityCollection &extrusion_entity_collection, float print_z, const Point &copy, GLVolume &volume)
{
for (const ExtrusionEntity *extrusion_entity : extrusion_entity_collection.entities)
extrusionentity_to_verts(extrusion_entity, print_z, copy, volume);
}
void _3DScene::extrusionentity_to_verts(const ExtrusionEntity *extrusion_entity, float print_z, const Point &copy, GLVolume &volume)
{
if (extrusion_entity != nullptr) {
auto *extrusion_path = dynamic_cast<const ExtrusionPath*>(extrusion_entity);
if (extrusion_path != nullptr)
extrusionentity_to_verts(*extrusion_path, print_z, copy, volume);
else {
auto *extrusion_loop = dynamic_cast<const ExtrusionLoop*>(extrusion_entity);
if (extrusion_loop != nullptr)
extrusionentity_to_verts(*extrusion_loop, print_z, copy, volume);
else {
auto *extrusion_multi_path = dynamic_cast<const ExtrusionMultiPath*>(extrusion_entity);
if (extrusion_multi_path != nullptr)
extrusionentity_to_verts(*extrusion_multi_path, print_z, copy, volume);
else {
auto *extrusion_entity_collection = dynamic_cast<const ExtrusionEntityCollection*>(extrusion_entity);
if (extrusion_entity_collection != nullptr)
extrusionentity_to_verts(*extrusion_entity_collection, print_z, copy, volume);
else {
throw Slic3r::RuntimeError("Unexpected extrusion_entity type in to_verts()");
}
}
}
}
}
}
void _3DScene::polyline3_to_verts(const Polyline3& polyline, double width, double height, GLVolume& volume)
{
Lines3 lines = polyline.lines();
std::vector<double> widths(lines.size(), width);
std::vector<double> heights(lines.size(), height);
thick_lines_to_verts(lines, widths, heights, false, volume);
}
void _3DScene::point3_to_verts(const Vec3crd& point, double width, double height, GLVolume& volume)
{
thick_point_to_verts(point, width, height, volume);
}
} // namespace Slic3r
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