mirror of https://github.com/axmolengine/axmol.git
46 lines
1.6 KiB
C++
46 lines
1.6 KiB
C++
#include "2d/SpriteSheetLoader.h"
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#include "base/Director.h"
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#include <vector>
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using namespace std;
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namespace ax
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{
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void SpriteSheetLoader::initializePolygonInfo(const Vec2& textureSize,
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const Vec2& spriteSize,
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const std::vector<int>& vertices,
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const std::vector<int>& verticesUV,
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const std::vector<int>& triangleIndices,
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PolygonInfo& info)
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{
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const auto vertexCount = vertices.size();
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const auto indexCount = triangleIndices.size();
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const auto scaleFactor = AX_CONTENT_SCALE_FACTOR();
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auto* vertexData = new V3F_C4B_T2F[vertexCount];
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for (size_t i = 0; i < vertexCount / 2; i++)
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{
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vertexData[i].colors = Color4B::WHITE;
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vertexData[i].vertices =
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Vec3(vertices[i * 2] / scaleFactor, (spriteSize.height - vertices[i * 2 + 1]) / scaleFactor, 0);
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vertexData[i].texCoords =
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Tex2F(verticesUV[i * 2] / textureSize.width, verticesUV[i * 2 + 1] / textureSize.height);
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}
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auto* indexData = new unsigned short[indexCount];
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for (size_t i = 0; i < indexCount; i++)
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{
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indexData[i] = static_cast<unsigned short>(triangleIndices[i]);
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}
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info.triangles.vertCount = static_cast<int>(vertexCount);
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info.triangles.verts = vertexData;
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info.triangles.indexCount = static_cast<int>(indexCount);
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info.triangles.indices = indexData;
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info.setRect(Rect(0, 0, spriteSize.width, spriteSize.height));
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}
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}
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