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Camera refactoring

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1) All camera related OpenGL calls moved into class

2) The Camera class now stores the view matrix, the projection matrix and the viewport

3) The Camera class now exposes methods to get the camera orientation vectors, the camera position, the view matrix, the projection matrix and the viewport

4) All the code operating on the camera or requiring camera data has been modified to use the new methods
This commit is contained in:
Enrico Turri 2019-04-01 10:00:10 +02:00
commit d87b478d60
10 changed files with 168 additions and 134 deletions
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70
src/slic3r/GUI/Camera.cpp
View file

@ -1,9 +1,21 @@
#include "libslic3r/libslic3r.h"
#include "Camera.hpp"
#include "3DScene.hpp"
#include <GL/glew.h>
static const float GIMBALL_LOCK_THETA_MAX = 180.0f;
// phi / theta angles to orient the camera.
static const float VIEW_DEFAULT[2] = { 45.0f, 45.0f };
static const float VIEW_LEFT[2] = { 90.0f, 90.0f };
static const float VIEW_RIGHT[2] = { -90.0f, 90.0f };
static const float VIEW_TOP[2] = { 0.0f, 0.0f };
static const float VIEW_BOTTOM[2] = { 0.0f, 180.0f };
static const float VIEW_FRONT[2] = { 0.0f, 90.0f };
static const float VIEW_REAR[2] = { 180.0f, 90.0f };
namespace Slic3r {
namespace GUI {
@ -57,6 +69,64 @@ void Camera::set_scene_box(const BoundingBoxf3& box)
m_scene_box = box;
}
bool Camera::select_view(const std::string& direction)
{
const float* dir_vec = nullptr;
if (direction == "iso")
dir_vec = VIEW_DEFAULT;
else if (direction == "left")
dir_vec = VIEW_LEFT;
else if (direction == "right")
dir_vec = VIEW_RIGHT;
else if (direction == "top")
dir_vec = VIEW_TOP;
else if (direction == "bottom")
dir_vec = VIEW_BOTTOM;
else if (direction == "front")
dir_vec = VIEW_FRONT;
else if (direction == "rear")
dir_vec = VIEW_REAR;
if (dir_vec != nullptr)
{
phi = dir_vec[0];
set_theta(dir_vec[1], false);
return true;
}
else
return false;
}
void Camera::apply_viewport(int x, int y, unsigned int w, unsigned int h) const
{
glsafe(::glViewport(0, 0, w, h));
glsafe(::glGetIntegerv(GL_VIEWPORT, m_viewport.data()));
}
void Camera::apply_view_matrix() const
{
glsafe(::glMatrixMode(GL_MODELVIEW));
glsafe(::glLoadIdentity());
glsafe(::glRotatef(-m_theta, 1.0f, 0.0f, 0.0f)); // pitch
glsafe(::glRotatef(phi, 0.0f, 0.0f, 1.0f)); // yaw
glsafe(::glTranslated(-m_target(0), -m_target(1), -m_target(2)));
glsafe(::glGetDoublev(GL_MODELVIEW_MATRIX, m_view_matrix.data()));
}
void Camera::apply_ortho_projection(float x_min, float x_max, float y_min, float y_max, float z_min, float z_max) const
{
glsafe(::glMatrixMode(GL_PROJECTION));
glsafe(::glLoadIdentity());
glsafe(::glOrtho(x_min, x_max, y_min, y_max, z_min, z_max));
glsafe(::glGetDoublev(GL_PROJECTION_MATRIX, m_projection_matrix.data()));
glsafe(::glMatrixMode(GL_MODELVIEW));
}
} // GUI
} // Slic3r