yggdrasil75/stupidsimcpp
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why does vsc do this sometimes?

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Yggdrasil75
2025-11-18 14:38:46 -05:00
parent 690f2cbc66
commit ed93432fce
3 changed files with 62 additions and 18 deletions
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41
util/grid/sprite2.hpp
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@@ -46,24 +46,27 @@ public:
Orientations[id] = orientation;
}
void getGridRegionAsBGR(const Vec2& minCorner, const Vec2& maxCorner, int& width, int& height, std::vector<uint8_t>& bgrData) const {
void getGridRegionAsBGR(const Vec2& minCorner, const Vec2& maxCorner, int& width, int& height, std::vector<uint8_t>& rgbData) const {
TIME_FUNCTION;
// std::cout << "excessdebug g2.483" << std::endl;
// Calculate dimensions
width = static_cast<int>(maxCorner.x - minCorner.x);
height = static_cast<int>(maxCorner.y - minCorner.y);
if (width <= 0 || height <= 0) {
width = height = 0;
bgrData.clear();
bgrData.shrink_to_fit();
rgbData.clear();
rgbData.shrink_to_fit();
return;
}
// std::cout << "excessdebug g2.494" << std::endl;
// Initialize RGB data (3 bytes per pixel: R, G, B)
std::vector<Vec4> rgbaBuffer(width * height, Vec4(0.0f, 0.0f, 0.0f, 0.0f));
// For each position in the grid, find the corresponding pixel
for (const auto& [id, pos] : Positions) {
// std::cout << "excessdebug g2.501." << id << std::endl;
size_t size = Sizes.at(id);
// Calculate pixel coordinates
@@ -76,34 +79,42 @@ public:
pixelXM = std::min(width - 1, pixelXM);
pixelYm = std::max(0, pixelYm);
pixelYM = std::min(height - 1, pixelYM);
// std::cout << "excessdebug g2.514." << id << std::endl;
// Ensure within bounds
if (pixelXM >= minCorner.x && pixelXm < width && pixelYM >= minCorner.y && pixelYm < height) {
// std::cout << "excessdebug g2.518." << id << " - (" << pixelXm << "," << pixelYM << ")" << std::endl;
const Vec4& color = Colors.at(id);
float srcAlpha = color.a;
float invSrcAlpha = 1.0f - srcAlpha;
for (int py = pixelYm; py <= pixelYM; ++py){
for (int px = pixelXm; px <= pixelXM; ++px){
int index = (py * width + px) * 3;
Vec4& dest = rgbaBuffer[index];
// std::cout << "excessdebug g2.524." << id << " - (" << py << "," << px << ")" << std::endl;
int index = (py * width + px);
Vec4 dest = rgbaBuffer[index];
dest.r = color.r * srcAlpha + dest.r * invSrcAlpha;
dest.g = color.g * srcAlpha + dest.g * invSrcAlpha;
dest.b = color.b * srcAlpha + dest.b * invSrcAlpha;
dest.a = srcAlpha + dest.a * invSrcAlpha;
dest.r = color.r * srcAlpha + dest.r; // * invSrcAlpha;
dest.g = color.g * srcAlpha + dest.g; // * invSrcAlpha;
dest.b = color.b * srcAlpha + dest.b; // * invSrcAlpha;
dest.a = srcAlpha + dest.a; // * invSrcAlpha;
rgbaBuffer[index] = dest;
}
}
}
}
bgrData.resize(dest.size() * 4);
for (int i = 0; i < width * height; ++i) {
rgbData.resize(rgbaBuffer.size() * 3);
for (int i = 0; i < rgbaBuffer.size(); ++i) {
const Vec4& color = rgbaBuffer[i];
int bgrIndex = i * 3;
// Convert from [0,1] to [0,255] and store as BGR
bgrData[bgrIndex + 0] = static_cast<uint8_t>(color.b * 255); // Blue
bgrData[bgrIndex + 1] = static_cast<uint8_t>(color.g * 255); // Green
bgrData[bgrIndex + 2] = static_cast<uint8_t>(color.r * 255); // Red
// Convert from [0,1] to [0,255] and store as RGB
// rgbData.push_back(color.r);
// rgbData.push_back(color.g);
// rgbData.push_back(color.b);
rgbData[bgrIndex + 2] = static_cast<unsigned char>(color.r * 255);
rgbData[bgrIndex + 1] = static_cast<unsigned char>(color.g * 255);
rgbData[bgrIndex + 0] = static_cast<unsigned char>(color.b * 255);
}
}