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qadmesh affine transform parenting

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This commit is contained in:
AndreaRigoni
2026-03-19 12:54:31 +00:00
parent 887b3b36f0
commit 4cb4560921
9 changed files with 103 additions and 33 deletions
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2
src/Math/ContainerBox.h
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@@ -180,7 +180,7 @@ public:
signals:
// signal to emit when the box is updated //
void Updated() { ULIB_SIGNAL_EMIT(ContainerBox::Updated); }
virtual void Updated() override { ULIB_SIGNAL_EMIT(ContainerBox::Updated); }
private:
AffineTransform m_LocalT;

25
src/Math/QuadMesh.cpp
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@@ -35,10 +35,10 @@ void QuadMesh::PrintSelf(std::ostream &o)
o << " #Quads : " << m_Quads.size() << "\n";
for(int i=0; i < m_Quads.size(); ++i ) {
o << " - quad[" << i << "]" <<
" " << m_Quads[i](0) << "->(" << m_Points[m_Quads[i](0)].transpose() << ") " <<
" " << m_Quads[i](1) << "->(" << m_Points[m_Quads[i](1)].transpose() << ") " <<
" " << m_Quads[i](2) << "->(" << m_Points[m_Quads[i](2)].transpose() << ") " <<
" " << m_Quads[i](3) << "->(" << m_Points[m_Quads[i](3)].transpose() << ") " <<
" " << m_Quads[i](0) << "->(" << GetPoint(m_Quads[i](0)).transpose() << ") " <<
" " << m_Quads[i](1) << "->(" << GetPoint(m_Quads[i](1)).transpose() << ") " <<
" " << m_Quads[i](2) << "->(" << GetPoint(m_Quads[i](2)).transpose() << ") " <<
" " << m_Quads[i](3) << "->(" << GetPoint(m_Quads[i](3)).transpose() << ") " <<
" \n";
}
o << " // ------------------------- // \n";
@@ -46,7 +46,16 @@ void QuadMesh::PrintSelf(std::ostream &o)
void QuadMesh::AddPoint(const Vector3f &pt)
{
this->m_Points.push_back(pt);
Vector4f p(pt.x(), pt.y(), pt.z(), 1.0f);
Vector4f localP = this->GetWorldMatrix().inverse() * p;
this->m_Points.push_back(localP.head<3>());
}
Vector3f QuadMesh::GetPoint(const Id_t id) const
{
Vector4f p(m_Points.at(id).x(), m_Points.at(id).y(), m_Points.at(id).z(), 1.0f);
Vector4f worldP = this->GetWorldMatrix() * p;
return worldP.head<3>();
}
void QuadMesh::AddQuad(const Id_t *id)
@@ -63,9 +72,9 @@ void QuadMesh::AddQuad(const Vector4i &id)
Vector3f QuadMesh::GetNormal(const Id_t id) const
{
const Vector4i &quad = m_Quads.at(id);
const Vector3f &v0 = m_Points.at(quad(0));
const Vector3f &v1 = m_Points.at(quad(1));
const Vector3f &v3 = m_Points.at(quad(3));
const Vector3f v0 = this->GetPoint(quad(0));
const Vector3f v1 = this->GetPoint(quad(1));
const Vector3f v3 = this->GetPoint(quad(3));
Vector3f edge1 = v1 - v0;
Vector3f edge2 = v3 - v0;

10
src/Math/QuadMesh.h
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@@ -29,25 +29,33 @@
#include <vector>
#include "Math/Dense.h"
#include "Core/Object.h"
#include "Math/Transform.h"
namespace uLib {
class QuadMesh
class QuadMesh : public AffineTransform, public Object
{
public:
void PrintSelf(std::ostream &o);
/** @brief Adds a point in global coordinates. Stored in local coordinates. */
void AddPoint(const Vector3f &pt);
void AddQuad(const Id_t *id);
void AddQuad(const Vector4i &id);
/** @brief Returns point in global coordinates. */
Vector3f GetPoint(const Id_t id) const;
inline std::vector<Vector3f> & Points() { return this->m_Points; }
inline std::vector<Vector4i> & Quads() { return this->m_Quads; }
const Vector4i & GetQuad(const Id_t id) const { return m_Quads.at(id); }
Vector3f GetNormal(const Id_t id) const;
virtual void Updated() override { ULIB_SIGNAL_EMIT(QuadMesh::Updated); }
private:
std::vector<Vector3f> m_Points;
std::vector<Vector4i> m_Quads;

12
src/Math/testing/QuadMeshTest.cpp
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@@ -47,5 +47,17 @@ int main() {
ASSERT_EQ(mesh.Points().size(), 4);
ASSERT_EQ(mesh.Quads().size(), 1);
// Test transformation
mesh.Translate(Vector3f(10, 20, 30));
Vector3f p0 = mesh.GetPoint(0);
TEST1( (p0 - Vector3f(10, 20, 30)).norm() < 1e-6 );
// Test AddPoint during transformation
mesh.AddPoint(Vector3f(11, 21, 31)); // Should be stored as (1, 1, 1) locally
Id_t lastId = mesh.Points().size() - 1;
TEST1( (mesh.Points().at(lastId) - Vector3f(1, 1, 1)).norm() < 1e-5 );
mesh.PrintSelf(std::cout);
END_TESTING;
}