IndicesGenerator.cpp

#include "IndicesGenerator.h"
 
void Cogs::Geometry::generateQuadIndices(std::vector<uint32_t>& dest, size_t quadCount, uint32_t vertexNumber, bool sharedVertices) {
  int step = sharedVertices ? -1 : 1;
 
  dest.reserve(dest.size() + (quadCount * 6));
 
  for (; quadCount--; vertexNumber += step) {
    dest.push_back(vertexNumber++);     // 0
    dest.push_back(vertexNumber++);     // 1
    dest.push_back(vertexNumber);       // 2
    dest.push_back(vertexNumber--);     // 2
    dest.push_back(vertexNumber++);     // 1
    dest.push_back(++vertexNumber);     // 3
  }
}