25 lines
664 B
C++
25 lines
664 B
C++
// This code is in the public domain -- Ignacio Castaño <castano@gmail.com>
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#include "TriMesh.h"
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using namespace nv;
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/// Triangle mesh.
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Vector3 TriMesh::faceNormal(uint f) const
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{
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const Face & face = this->faceAt(f);
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const Vector3 & p0 = this->vertexAt(face.v[0]).pos;
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const Vector3 & p1 = this->vertexAt(face.v[1]).pos;
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const Vector3 & p2 = this->vertexAt(face.v[2]).pos;
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return normalizeSafe(cross(p1 - p0, p2 - p0), Vector3(0.0f), 0.0f);
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}
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/// Get face vertex.
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const TriMesh::Vertex & TriMesh::faceVertex(uint f, uint v) const
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{
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nvDebugCheck(v < 3);
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const Face & face = this->faceAt(f);
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return this->vertexAt(face.v[v]);
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}
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