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Fix for adding object with ortho camera

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This commit is contained in:
Filip Sykala - NTB T15p 2022-11-24 11:40:38 +01:00
parent c25ef9d3ad
commit fc886e3f8d
1 changed files with 12 additions and 0 deletions
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12
src/slic3r/GUI/CameraUtils.cpp
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@ -104,6 +104,18 @@ Vec2d CameraUtils::get_z0_position(const Camera &camera, const Vec2d & coor)
{
Vec3d dir = CameraUtils::create_ray(camera, coor);
Vec3d p0 = camera.get_position();
if (camera.get_type() == Camera::EType::Ortho) {
Matrix4d modelview = camera.get_view_matrix().matrix();
Matrix4d projection = camera.get_projection_matrix().matrix();
Vec4i viewport(camera.get_viewport().data());
igl::unproject(Vec3d(coor.x(), viewport[3] - coor.y(), 0.), modelview, projection, viewport, p0);
}
// is approx zero
if ((fabs(dir.z()) - 1e-4) < 0)
return Vec2d(std::numeric_limits<double>::max(),
std::numeric_limits<double>::max());
// find position of ray cross plane(z = 0)
double t = p0.z() / dir.z();
Vec3d p = p0 - t * dir;