/*
====================
idSurface_Polytope::SetupTetrahedron
====================
*/
void idSurface_Polytope::SetupTetrahedron( const idBounds &bounds ) {
idVec3 center, scale;
float c1, c2, c3;
c1 = 0.4714045207f;
c2 = 0.8164965809f;
c3 = -0.3333333333f;
center = bounds.GetCenter();
scale = bounds[1] - center;
verts.SetNum( 4 );
verts[0].xyz = center + idVec3( 0.0f, 0.0f, scale.z );
verts[1].xyz = center + idVec3( 2.0f * c1 * scale.x, 0.0f, c3 * scale.z );
verts[2].xyz = center + idVec3( -c1 * scale.x, c2 * scale.y, c3 * scale.z );
verts[3].xyz = center + idVec3( -c1 * scale.x, -c2 * scale.y, c3 * scale.z );
indexes.SetNum( 4*3 );
indexes[0*3+0] = 0;
indexes[0*3+1] = 1;
indexes[0*3+2] = 2;
indexes[1*3+0] = 0;
indexes[1*3+1] = 2;
indexes[1*3+2] = 3;
indexes[2*3+0] = 0;
indexes[2*3+1] = 3;
indexes[2*3+2] = 1;
indexes[3*3+0] = 1;
indexes[3*3+1] = 3;
indexes[3*3+2] = 2;
GenerateEdgeIndexes();
}
/*
====================
idSurface_Polytope::SetupHexahedron
====================
*/
void idSurface_Polytope::SetupHexahedron(const idBounds &bounds)
{
idVec3 center, scale;
center = bounds.GetCenter();
scale = bounds[1] - center;
verts.SetNum(8);
verts[0].xyz = center + idVec3(-scale.x, -scale.y, -scale.z);
verts[1].xyz = center + idVec3(scale.x, -scale.y, -scale.z);
verts[2].xyz = center + idVec3(scale.x, scale.y, -scale.z);
verts[3].xyz = center + idVec3(-scale.x, scale.y, -scale.z);
verts[4].xyz = center + idVec3(-scale.x, -scale.y, scale.z);
verts[5].xyz = center + idVec3(scale.x, -scale.y, scale.z);
verts[6].xyz = center + idVec3(scale.x, scale.y, scale.z);
verts[7].xyz = center + idVec3(-scale.x, scale.y, scale.z);
indexes.SetNum(12*3);
indexes[ 0*3+0] = 0;
indexes[ 0*3+1] = 3;
indexes[ 0*3+2] = 2;
indexes[ 1*3+0] = 0;
indexes[ 1*3+1] = 2;
indexes[ 1*3+2] = 1;
indexes[ 2*3+0] = 0;
indexes[ 2*3+1] = 1;
indexes[ 2*3+2] = 5;
indexes[ 3*3+0] = 0;
indexes[ 3*3+1] = 5;
indexes[ 3*3+2] = 4;
indexes[ 4*3+0] = 0;
indexes[ 4*3+1] = 4;
indexes[ 4*3+2] = 7;
indexes[ 5*3+0] = 0;
indexes[ 5*3+1] = 7;
indexes[ 5*3+2] = 3;
indexes[ 6*3+0] = 6;
indexes[ 6*3+1] = 5;
indexes[ 6*3+2] = 1;
indexes[ 7*3+0] = 6;
indexes[ 7*3+1] = 1;
indexes[ 7*3+2] = 2;
indexes[ 8*3+0] = 6;
indexes[ 8*3+1] = 2;
indexes[ 8*3+2] = 3;
indexes[ 9*3+0] = 6;
indexes[ 9*3+1] = 3;
indexes[ 9*3+2] = 7;
indexes[10*3+0] = 6;
indexes[10*3+1] = 7;
indexes[10*3+2] = 4;
indexes[11*3+0] = 6;
indexes[11*3+1] = 4;
indexes[11*3+2] = 5;
GenerateEdgeIndexes();
}
/*
====================
idSurface_Polytope::SetupOctahedron
====================
*/
void idSurface_Polytope::SetupOctahedron(const idBounds &bounds)
{
idVec3 center, scale;
center = bounds.GetCenter();
scale = bounds[1] - center;
verts.SetNum(6);
verts[0].xyz = center + idVec3(scale.x, 0.0f, 0.0f);
verts[1].xyz = center + idVec3(-scale.x, 0.0f, 0.0f);
verts[2].xyz = center + idVec3(0.0f, scale.y, 0.0f);
verts[3].xyz = center + idVec3(0.0f, -scale.y, 0.0f);
verts[4].xyz = center + idVec3(0.0f, 0.0f, scale.z);
verts[5].xyz = center + idVec3(0.0f, 0.0f, -scale.z);
indexes.SetNum(8*3);
indexes[0*3+0] = 4;
indexes[0*3+1] = 0;
indexes[0*3+2] = 2;
indexes[1*3+0] = 4;
indexes[1*3+1] = 2;
indexes[1*3+2] = 1;
indexes[2*3+0] = 4;
indexes[2*3+1] = 1;
indexes[2*3+2] = 3;
indexes[3*3+0] = 4;
indexes[3*3+1] = 3;
indexes[3*3+2] = 0;
indexes[4*3+0] = 5;
indexes[4*3+1] = 2;
indexes[4*3+2] = 0;
indexes[5*3+0] = 5;
indexes[5*3+1] = 1;
indexes[5*3+2] = 2;
indexes[6*3+0] = 5;
indexes[6*3+1] = 3;
indexes[6*3+2] = 1;
indexes[7*3+0] = 5;
indexes[7*3+1] = 0;
indexes[7*3+2] = 3;
GenerateEdgeIndexes();
}
