Catcrafts/Crafter.Graphics
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This commit is contained in:
Jorijn van der Graaf 2025-11-25 20:40:37 +01:00
commit a43fd6ac2e
9 changed files with 215 additions and 137 deletions
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74
implementations/Crafter.Graphics-RenderingElement.cpp
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@ -44,86 +44,12 @@ RenderingElement::RenderingElement(std::uint_fast32_t bufferWidth, std::uint_fas
}
RenderingElement::RenderingElement(const std::string_view imagePath, std::int_fast32_t anchorX, std::int_fast32_t anchorY, std::uint_fast32_t relativeWidth, std::uint_fast32_t relativeHeight, std::int_fast32_t anchorOffsetX, std::int_fast32_t anchorOffsetY, std::int_fast32_t z, bool ignoreScaling) : Transform(anchorX, anchorY, relativeWidth, relativeHeight, anchorOffsetX, anchorOffsetY, z, ignoreScaling) {
RenderImage(imagePath);
}
RenderingElement::RenderingElement(const std::string_view text, float size, Pixel_BU8_GU8_RU8_AU8 pixel, Font& font, std::int_fast32_t anchorX, std::int_fast32_t anchorY, std::uint_fast32_t relativeWidth, std::uint_fast32_t relativeHeight, std::int_fast32_t anchorOffsetX, std::int_fast32_t anchorOffsetY, std::int_fast32_t z, bool ignoreScaling) : Transform(anchorX, anchorY, relativeWidth, relativeHeight, anchorOffsetX, anchorOffsetY, z, ignoreScaling) {
RenderText(text, size, pixel, font);
}
void RenderingElement::ResizeBuffer(std::uint_fast32_t width, std::uint_fast32_t height) {
this->bufferWidth = width;
this->bufferHeight = height;
buffer.resize(width * height);
}
void RenderingElement::RenderImage(const std::string_view path) {
std::filesystem::path abs = std::filesystem::absolute(path);
int xSize;
int ySize;
unsigned char* bgData = stbi_load(abs.string().c_str(), &xSize, &ySize, nullptr, 4);
ResizeBuffer(xSize, ySize);
for(std::uint_fast32_t x = 0; x < xSize; x++) {
for(std::uint_fast32_t y = 0; y < ySize; y++) {
std::uint_fast32_t idx = (x*ySize+y)*4;
buffer[x*ySize+y].r = bgData[idx];
buffer[x*ySize+y].g = bgData[idx+1];
buffer[x*ySize+y].b = bgData[idx+2];
buffer[x*ySize+y].a = bgData[idx+3];
}
}
}
void RenderingElement::RenderText(const std::string_view text, float size, Pixel_BU8_GU8_RU8_AU8 color, Font& font) {
buffer.clear();
float scale = stbtt_ScaleForPixelHeight(&font.font, size);
int baseline = (int)(font.ascent * scale);
std::uint_fast32_t bufferWidth = 0;
for (const char c : text) {
int advance, lsb;
stbtt_GetCodepointHMetrics(&font.font, c, &advance, &lsb);
bufferWidth += (int)(advance * scale);
}
ResizeBuffer(bufferWidth, (font.ascent - font.descent) * scale);
int x = 0;
for (std::uint_fast32_t i = 0; i < text.size(); i++) {
int codepoint = text[i];
int ax;
int lsb;
stbtt_GetCodepointHMetrics(&font.font, codepoint, &ax, &lsb);
int c_x1, c_y1, c_x2, c_y2;
stbtt_GetCodepointBitmapBox(&font.font, codepoint, scale, scale, &c_x1, &c_y1, &c_x2, &c_y2);
int w = c_x2 - c_x1;
int h = c_y2 - c_y1;
std::vector<unsigned char> bitmap(w * h);
stbtt_MakeCodepointBitmap(&font.font, bitmap.data(), w, h, w, scale, scale, codepoint);
for (int j = 0; j < h; j++) {
for (int i = 0; i < w; i++) {
buffer[(baseline + j + c_y1) * bufferWidth + (x + i + c_x1)] = {color.r, color.g, color.b, bitmap[j * w + i]};
}
}
x += (int)(ax * scale);
if (i + 1 < text.size()) {
x += (int)stbtt_GetCodepointKernAdvance(&font.font, codepoint, text[i+1] * scale);
}
}
}
void RenderingElement::CopyNearestNeighbour(Pixel_BU8_GU8_RU8_AU8* dst, std::uint_fast32_t dstWidth, std::uint_fast32_t dstHeight) const {
for (std::uint_fast32_t y = 0; y < dstHeight; y++) {
std::uint_fast32_t srcY = y * bufferHeight / dstHeight;