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改进Gizmo3DMove的选中判断

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hyzboy
2025-07-29 00:44:03 +08:00
parent eb4a8fba21
commit 3c611be712
3 changed files with 43 additions and 50 deletions
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30
example/Gizmo/Gizmo3DMove.cpp
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@@ -202,36 +202,34 @@ namespace
Matrix4f l2w=GetLocalToWorldMatrix();
Vector3f start;
Vector3f end;
Vector3f p_ray,p_ls;
float dist;
float pixel_per_unit;
start=TransformPosition(l2w,Vector3f(0,0,0)); //将原点转换到世界坐标
{
end=TransformPosition(l2w,Vector3f((GIZMO_CONE_LENGTH+GIZMO_CYLINDER_HALF_LENGTH)*20,0,0));
dist=ray.ToLineSegmentDistance(start,end);
//求射线与线段的最近点
ray.ClosestPoint(p_ray, //射线上的点
p_ls, //线段上的点
start,end); //线段
MaterialInstance *mi;
dist=glm::distance(p_ray,p_ls); //计算射线与线段的距离
if(dist<GIZMO_CYLINDER_RADIUS*10)
{
mi=GetGizmoMI3D(GizmoColor::Yellow);
}
else
{
mi=GetGizmoMI3D(GizmoColor::Red);
}
//求p_ls坐标相对屏幕空间象素的缩放比
pixel_per_unit=cc->GetPixelPerUnit(p_ls);
//MaterialInstance *mi=GetGizmoMI3D(dist<GIZMO_CYLINDER_RADIUS*100?GizmoColor::Yellow:GizmoColor::Red);
MaterialInstance *mi=GetGizmoMI3D(dist<GIZMO_CYLINDER_RADIUS*pixel_per_unit?GizmoColor::Yellow:GizmoColor::Red);
axis[size_t(AXIS::X)].cylinder->SetOverrideMaterial(mi);
axis[size_t(AXIS::X)].cone->SetOverrideMaterial(mi);
std::cout<<"Mouse: "<<mouse_coord.x<<","<<mouse_coord.y<<std::endl;
// std::cout<<"CrossPoint: "<<cross_point.x<<","<<cross_point.y<<","<<cross_point.z<<std::endl;
std::cout<<"Ray(Ori): "<<ray.origin.x<<","<<ray.origin.y<<","<<ray.origin.z<<")"<<std::endl;
std::cout<<"Ray(Dir): "<<ray.direction.x<<","<<ray.direction.y<<","<<ray.direction.z<<")"<<std::endl;
std::cout<<"Distance: "<<dist<<std::endl;
//std::cout<<"Mouse: "<<mouse_coord.x<<","<<mouse_coord.y<<std::endl;
//std::cout<<"Ray(Ori): "<<ray.origin.x<<","<<ray.origin.y<<","<<ray.origin.z<<")"<<std::endl;
//std::cout<<"Ray(Dir): "<<ray.direction.x<<","<<ray.direction.y<<","<<ray.direction.z<<")"<<std::endl;
//std::cout<<"Distance: "<<dist<<std::endl;
}
return false;