/
WindingRendering.cpp
69 lines (53 loc) · 2.07 KB
/
WindingRendering.cpp
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#include "gtest/gtest.h"
#include "render/ArbitraryMeshVertex.h"
#include "render/WindingRenderer.h"
#include "render/CompactWindingVertexBuffer.h"
namespace test
{
using VertexBuffer = render::CompactWindingVertexBuffer<ArbitraryMeshVertex>;
inline std::vector<ArbitraryMeshVertex> createWinding(int id, int size)
{
std::vector<ArbitraryMeshVertex> winding;
for (int i = 0; i < size; ++i)
{
winding.emplace_back(ArbitraryMeshVertex({ id + 0.0, id + 0.5, id + 0.3 }, { 0, 0, id + 0.0 }, { id + 0.0, -id + 0.0 }));
}
return winding;
}
inline void checkWindingIndices(const VertexBuffer& buffer, std::size_t slot)
{
// Slot must be within range
auto windingSize = buffer.getWindingSize();
EXPECT_LT(slot, buffer.getVertices().size() / windingSize);
// Assume the indices are within bounds
auto indexStart = buffer.getNumIndicesPerWinding() * slot;
EXPECT_LE(indexStart + buffer.getNumIndicesPerWinding(), buffer.getIndices().size());
// Check the indices, they must be referencing vertices in that slot
for (auto i = indexStart; i < indexStart + buffer.getNumIndicesPerWinding(); ++i)
{
auto index = buffer.getIndices().at(i);
EXPECT_GE(index, slot * windingSize) << "Winding index out of lower bounds";
EXPECT_LT(index, (slot + 1) * windingSize) << "Winding index out of upper bounds";
}
}
TEST(CompactWindingVertexBuffer, NumIndicesPerWinding)
{
for (auto i = 0; i < 10; ++i)
{
VertexBuffer buffer(i);
EXPECT_EQ(buffer.getWindingSize(), i);
EXPECT_EQ(buffer.getNumIndicesPerWinding(), 3 * (buffer.getWindingSize() - 2));
}
}
TEST(CompactWindingVertexBuffer, AddSingleWinding)
{
auto winding1 = createWinding(1, 4);
VertexBuffer buffer(4);
auto slot = buffer.pushWinding(winding1);
EXPECT_EQ(slot, 0) << "Wrong slot assignment";
EXPECT_EQ(buffer.getVertices().size(), 4);
EXPECT_EQ(buffer.getIndices().size(), buffer.getNumIndicesPerWinding());
// Assume that the indices have been correctly calculated
checkWindingIndices(buffer, slot);
}
}