125 lines
3.3 KiB
C++
125 lines
3.3 KiB
C++
#ifndef GL_FIELD
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#define GL_FIELD
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#include <vcg/complex/algorithms/parametrization/tangent_field_operators.h>
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namespace vcg{
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template <class MeshType>
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class GLField
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{
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typedef typename MeshType::FaceType FaceType;
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typedef typename MeshType::VertexType VertexType;
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typedef typename MeshType::CoordType CoordType;
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typedef typename MeshType::ScalarType ScalarType;
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static void GLDrawField(CoordType dir[4],
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CoordType center,
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ScalarType &size,
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bool oneside=false)
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{
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ScalarType size1=size;
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ScalarType size2=size;
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if (oneside)size2=0;
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glLineWidth(2);
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vcg::glColor(vcg::Color4b(0,0,255,255));
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glBegin(GL_LINES);
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glVertex(center+dir[0]*size1);
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glVertex(center-dir[0]*size2);
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glEnd();
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glLineWidth(2);
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vcg::glColor(vcg::Color4b(0,255,0,255));
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glBegin(GL_LINES);
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glVertex(center+dir[1]*size1);
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glVertex(center-dir[1]*size2);
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glEnd();
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}
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///draw the cross field of a given face
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static void GLDrawFaceField(const FaceType &f,
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ScalarType &size,
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bool oneside=false)
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{
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CoordType center=(f.cP0(0)+f.cP0(1)+f.cP0(2))/3;
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CoordType normal=f.cN();
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CoordType dir[4];
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vcg::tri::CrossField<MeshType>::CrossVector(f,dir);
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GLDrawField(dir,center,size,oneside);
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}
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// static void GLDrawFaceSeams(const FaceType &f,
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// vcg::Point3<bool> seams,
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// vcg::Color4b seamCol[3])
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// {
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// glLineWidth(2);
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// glBegin(GL_LINES);
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// for (int i=0;i<3;i++)
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// {
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// if (!seams[i])continue;
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// vcg::glColor(seamCol[i]);
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// glVertex(f.V0(i)->P());
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// glVertex(f.V1(i)->P());
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// }
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// glEnd();
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// }
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static void GLDrawVertField(const MeshType &mesh,
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const VertexType &v,
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ScalarType &size)
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{
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CoordType center=v.cP();
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CoordType normal=v.cN();
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CoordType dir[4];
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vcg::tri::CrossField<MeshType>::CrossVector(v,dir);
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GLDrawField(dir,center,size);
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}
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public:
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static void GLDrawFaceField(const MeshType &mesh,
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ScalarType scale=0.002,
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bool oneside=false)
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{
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glPushAttrib(GL_ALL_ATTRIB_BITS);
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glDepthRange(0.0,0.9999);
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glEnable(GL_COLOR_MATERIAL);
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glDisable(GL_LIGHTING);
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glDisable(GL_BLEND);
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ScalarType size=mesh.bbox.Diag()*scale;
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for (unsigned int i=0;i<mesh.face.size();i++)
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{
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if (mesh.face[i].IsD())continue;
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//if (!mesh.face[i].leading)continue;
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GLDrawFaceField(mesh.face[i],size,oneside);
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}
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glPopAttrib();
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}
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static void GLDrawVertField(const MeshType &mesh)
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{
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glPushAttrib(GL_ALL_ATTRIB_BITS);
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glDepthRange(0.0,0.9999);
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glEnable(GL_COLOR_MATERIAL);
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glDisable(GL_LIGHTING);
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glDisable(GL_BLEND);
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ScalarType size=mesh.bbox.Diag()/400.0;
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for (int i=0;i<mesh.vert.size();i++)
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{
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if (mesh.vert[i].IsD())continue;
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//if (!mesh.face[i].leading)continue;
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GLDrawVertField(mesh,mesh.vert[i],size);
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}
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glPopAttrib();
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}
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};
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}
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#endif
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