TriMesh<FloatType> Shapes<FloatType>::wireframeBox(FloatType dim, const vec4<FloatType>& color, FloatType thickness) {
MLIB_WARNING("untested function");
FloatType cubeVData[8][3] = {
{ 1.0f, 1.0f, 1.0f }, { -1.0f, 1.0f, 1.0f }, { -1.0f, -1.0f, 1.0f },
{ 1.0f, -1.0f, 1.0f }, { 1.0f, 1.0f, -1.0f }, { -1.0f, 1.0f, -1.0f },
{ -1.0f, -1.0f, -1.0f }, { 1.0f, -1.0f, -1.0f }
};
int cubeEData[12][2] = {
{ 0, 1 }, { 1, 2 }, { 2, 3 }, { 3, 0 },
{ 4, 5 }, { 5, 6 }, { 6, 7 }, { 7, 4 },
{ 0, 4 }, { 1, 5 }, { 2, 6 }, { 3, 7 }
};
std::vector<ml::TriMesh<FloatType>> meshes;
ml::vec3<FloatType> v[8]; std::memmove(v, cubeVData, sizeof(v[0]) * 8);
for (uint i = 0; i < 12; i++) {
meshes.push_back(line(dim * v[cubeEData[i][0]], dim * v[cubeEData[i][1]], color, thickness));
}
return meshutil::createUnifiedMesh(meshes);
}
TriMesh<FloatType>::TriMesh( const MeshData<FloatType>& meshData )
{
m_Vertices.resize(meshData.m_Vertices.size());
m_bHasNormals = meshData.m_Normals.size() > 0;
m_bHasColors = meshData.m_Colors.size() > 0;
m_bHasTexCoords = meshData.m_TextureCoords.size() > 0;
for (size_t i = 0; i < m_Vertices.size(); i++) {
m_Vertices[i].position = meshData.m_Vertices[i];
}
for (unsigned int i = 0; i < meshData.m_FaceIndicesVertices.size(); i++) {
if (meshData.m_FaceIndicesVertices[i].size() == 3) {
//we need to split vertices if the same vertex has different texcoords and/or normals
bool bFaceHasNormals = m_bHasNormals && meshData.getFaceIndicesNormals()[i].size() > 0;
bool bFaceHasTexCoords = m_bHasTexCoords && meshData.getFaceIndicesTexCoords()[i].size() > 0;
bool bFaceHasColors = m_bHasColors && meshData.getFaceIndicesColors()[i].size() > 0;
if (bFaceHasNormals || bFaceHasTexCoords || bFaceHasColors) {
vec3ui coords = vec3ui(0,0,0);
for (unsigned int j = 0; j < 3; j++) {
bool vertexSplit = false;
if (bFaceHasNormals) { //split if normal is different than the one found before
const point3d<FloatType>& n = meshData.m_Normals[meshData.getFaceIndicesNormals()[i][j]];
if (m_Vertices[meshData.getFaceIndicesVertices()[i][j]].normal != point3d<FloatType>::origin &&
m_Vertices[meshData.getFaceIndicesVertices()[i][j]].normal != n) vertexSplit = true;
}
if (bFaceHasTexCoords) { //split if texcoord is different than the one found before
const point2d<FloatType>& t = meshData.m_TextureCoords[meshData.getFaceIndicesTexCoords()[i][j]];
if (m_Vertices[meshData.getFaceIndicesVertices()[i][j]].texCoord != point2d<FloatType>::origin &&
m_Vertices[meshData.getFaceIndicesVertices()[i][j]].texCoord != t) vertexSplit = true;
}
if (bFaceHasColors) { //split if texcoord is different than the one found before
const point4d<FloatType>& c = meshData.m_Colors[meshData.getFaceIndicesColors()[i][j]];
if (m_Vertices[meshData.getFaceIndicesVertices()[i][j]].color != point4d<FloatType>::origin &&
m_Vertices[meshData.getFaceIndicesVertices()[i][j]].color != c) vertexSplit = true;
}
if (vertexSplit) {
MLIB_WARNING("vertex split untested");
Vertex<FloatType> v = m_Vertices[meshData.getFaceIndicesVertices()[i][j]];
if (bFaceHasNormals) v.normal = meshData.m_Normals[meshData.getFaceIndicesNormals()[i][j]];
if (bFaceHasTexCoords) v.texCoord = meshData.m_TextureCoords[meshData.getFaceIndicesTexCoords()[i][j]];
if (bFaceHasColors) v.color = meshData.m_Colors[meshData.getFaceIndicesColors()[i][j]];
m_Vertices.push_back(v);
coords[j] = (unsigned int)m_Vertices.size() - 1;
} else {
if (bFaceHasNormals) m_Vertices[meshData.getFaceIndicesVertices()[i][j]].normal = meshData.m_Normals[meshData.getFaceIndicesNormals()[i][j]];
if (bFaceHasTexCoords) m_Vertices[meshData.getFaceIndicesVertices()[i][j]].texCoord = meshData.m_TextureCoords[meshData.getFaceIndicesTexCoords()[i][j]];
if (bFaceHasColors) m_Vertices[meshData.getFaceIndicesVertices()[i][j]].color = meshData.m_Colors[meshData.getFaceIndicesColors()[i][j]];
coords[j] = meshData.getFaceIndicesVertices()[i][j];
}
}
m_Indices.push_back(coords);
//m_Indices.push_back(vec3ui(meshData.m_FaceIndicesVertices[i][0], meshData.m_FaceIndicesVertices[i][1], meshData.m_FaceIndicesVertices[i][2]));
//if (hasNormals) {
// //we are ignoring the fact that sometimes there might be vertex split required (if a vertex has two different normals)
// m_Vertices[m_Indices[i][0]].normal = meshData.m_Normals[meshData.m_FaceIndicesNormals[i][0]];
// m_Vertices[m_Indices[i][1]].normal = meshData.m_Normals[meshData.m_FaceIndicesNormals[i][1]];
// m_Vertices[m_Indices[i][2]].normal = meshData.m_Normals[meshData.m_FaceIndicesNormals[i][2]];
//}
//if (hasTexCoords) {
// //we are ignoring the fact that sometimes there might be vertex split required (if a vertex has two different normals)
// m_Vertices[m_Indices[i][0]].texCoord = meshData.m_TextureCoords[meshData.m_FaceIndicesTextureCoords[i][0]];
// m_Vertices[m_Indices[i][1]].texCoord = meshData.m_TextureCoords[meshData.m_FaceIndicesTextureCoords[i][1]];
// m_Vertices[m_Indices[i][2]].texCoord = meshData.m_TextureCoords[meshData.m_FaceIndicesTextureCoords[i][2]];
//}
} else {
m_Indices.push_back(vec3ui(meshData.m_FaceIndicesVertices[i][0], meshData.m_FaceIndicesVertices[i][1], meshData.m_FaceIndicesVertices[i][2]));
}
} else {
MLIB_WARNING("non triangle face found - ignoring it");
}
}
}
