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WIP: Transformation of instances in world coordinate space:

Browse source 
Ulocking the "anisotropic" scaling checkbox will bake the transformation
into meshes to allow for scaling in world axes.

Optimized and templated the stl_transform functions, now also available for 3x3 matrices.
The Canvas3D::reload_scene() now maintains selection even if all volumes of an instance changed their IDs.
This commit is contained in:
bubnikv 2019-04-26 17:28:31 +02:00
parent f78c3a0f1b
commit 6526a8fcaf
14 changed files with 237 additions and 118 deletions
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59
src/admesh/util.cpp
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@ -137,65 +137,6 @@ static void calculate_normals(stl_file *stl)
}
}
void stl_transform(stl_file *stl, float *trafo3x4) {
int i_face, i_vertex;
if (stl->error)
return;
for (i_face = 0; i_face < stl->stats.number_of_facets; ++ i_face) {
stl_vertex *vertices = stl->facet_start[i_face].vertex;
for (i_vertex = 0; i_vertex < 3; ++ i_vertex) {
stl_vertex &v_dst = vertices[i_vertex];
stl_vertex v_src = v_dst;
v_dst(0) = trafo3x4[0] * v_src(0) + trafo3x4[1] * v_src(1) + trafo3x4[2] * v_src(2) + trafo3x4[3];
v_dst(1) = trafo3x4[4] * v_src(0) + trafo3x4[5] * v_src(1) + trafo3x4[6] * v_src(2) + trafo3x4[7];
v_dst(2) = trafo3x4[8] * v_src(0) + trafo3x4[9] * v_src(1) + trafo3x4[10] * v_src(2) + trafo3x4[11];
}
}
stl_get_size(stl);
calculate_normals(stl);
}
void stl_transform(stl_file *stl, const Eigen::Transform<double, 3, Eigen::Affine, Eigen::DontAlign>& t)
{
if (stl->error)
return;
unsigned int vertices_count = 3 * (unsigned int)stl->stats.number_of_facets;
if (vertices_count == 0)
return;
Eigen::MatrixXf src_vertices(3, vertices_count);
stl_facet* facet_ptr = stl->facet_start;
unsigned int v_id = 0;
while (facet_ptr < stl->facet_start + stl->stats.number_of_facets)
{
for (int i = 0; i < 3; ++i)
{
::memcpy((void*)src_vertices.col(v_id).data(), (const void*)&facet_ptr->vertex[i], 3 * sizeof(float));
++v_id;
}
facet_ptr += 1;
}
Eigen::MatrixXf dst_vertices(3, vertices_count);
dst_vertices = t.cast<float>() * src_vertices.colwise().homogeneous();
facet_ptr = stl->facet_start;
v_id = 0;
while (facet_ptr < stl->facet_start + stl->stats.number_of_facets)
{
for (int i = 0; i < 3; ++i)
{
::memcpy((void*)&facet_ptr->vertex[i], (const void*)dst_vertices.col(v_id).data(), 3 * sizeof(float));
++v_id;
}
facet_ptr += 1;
}
stl_get_size(stl);
calculate_normals(stl);
}
void
stl_rotate_x(stl_file *stl, float angle) {
int i;