WARNING: BIG CHANGE: Move Color functions to texture module
WARNING: Some functions ADDED and some RENAMED: - RENAMED: Fade() -> ColorAlpha() [Added #define for compatibility] - ADDED: ColorAlphaBlend() - ADDED: GetPixelColor() - ADDED: SetPixelColor()
This commit is contained in:
raysan5
parent
ec09fea29a
commit
ad954dc7ab
3 changed files with 325 additions and 321 deletions
453
src/textures.c
453
src/textures.c
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@ -2485,159 +2485,6 @@ void ImageDrawRectangleLines(Image *dst, Rectangle rec, int thick, Color color)
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ImageDrawRectangle(dst, (int)rec.x, (int)(rec.y + rec.height - thick), (int)rec.width, thick, color);
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}
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Color GetPixelColor(void *pixel, int format)
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{
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Color col = { 0 };
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switch (format)
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{
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case UNCOMPRESSED_GRAYSCALE: col = (Color){ ((unsigned char *)pixel)[0], ((unsigned char *)pixel)[0], ((unsigned char *)pixel)[0], 255 }; break;
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case UNCOMPRESSED_GRAY_ALPHA: col = (Color){ ((unsigned char *)pixel)[0], ((unsigned char *)pixel)[0], ((unsigned char *)pixel)[0], ((unsigned char *)pixel)[1] }; break;
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case UNCOMPRESSED_R5G6B5:
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{
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col.r = (unsigned char)(((((unsigned short *)pixel)[0] >> 11)*31)/255);
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col.g = (unsigned char)((((((unsigned short *)pixel)[0] >> 5) & 0b0000000000111111)*63)/255);
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col.b = (unsigned char)(((((unsigned short *)pixel)[0] & 0b0000000000011111)*31)/255);
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col.a = 255;
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} break;
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case UNCOMPRESSED_R5G5B5A1:
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{
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col.r = (unsigned char)(((((unsigned short *)pixel)[0] >> 11)*31)/255);
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col.g = (unsigned char)((((((unsigned short *)pixel)[0] >> 6) & 0b0000000000011111)*31)/255);
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col.b = (unsigned char)(((((unsigned short *)pixel)[0] & 0b0000000000011111)*31)/255);
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col.a = (((unsigned short *)pixel)[0] & 0b0000000000000001)? 255 : 0;
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} break;
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case UNCOMPRESSED_R4G4B4A4:
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{
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col.r = (unsigned char)(((((unsigned short *)pixel)[0] >> 12)*15)/255);
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col.g = (unsigned char)((((((unsigned short *)pixel)[0] >> 8) & 0b0000000000001111)*15)/255);
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col.b = (unsigned char)((((((unsigned short *)pixel)[0] >> 4) & 0b0000000000001111)*15)/255);
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col.a = (unsigned char)(((((unsigned short *)pixel)[0] & 0b0000000000001111)*15)/255);
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} break;
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case UNCOMPRESSED_R8G8B8A8: col = (Color){ ((unsigned char *)pixel)[0], ((unsigned char *)pixel)[1], ((unsigned char *)pixel)[2], ((unsigned char *)pixel)[3] }; break;
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case UNCOMPRESSED_R8G8B8: col = (Color){ ((unsigned char *)pixel)[0], ((unsigned char *)pixel)[1], ((unsigned char *)pixel)[2], 255 }; break;
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//case UNCOMPRESSED_R32: break;
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//case UNCOMPRESSED_R32G32B32: break;
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//case UNCOMPRESSED_R32G32B32A32: break;
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default: break;
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}
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return col;
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}
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Color ColorAlphaBlend(Color dst, Color src, Color tint)
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{
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Vector4 fdst = ColorNormalize(dst);
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Vector4 fsrc = ColorNormalize(src);
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Vector4 fout = { 0.0f };
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Vector4 ftint = ColorNormalize(tint);
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// Apply color tint to source image
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fsrc.x *= ftint.x; fsrc.y *= ftint.y; fsrc.z *= ftint.z; fsrc.w *= ftint.w;
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fout.w = fsrc.w + fdst.w*(1.0f - fsrc.w);
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if (fout.w <= 0.0f)
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{
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fout.x = 0.0f;
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fout.y = 0.0f;
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fout.z = 0.0f;
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}
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else
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{
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fout.x = (fsrc.x*fsrc.w + fdst.x*fdst.w*(1 - fsrc.w))/fout.w;
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fout.y = (fsrc.y*fsrc.w + fdst.y*fdst.w*(1 - fsrc.w))/fout.w;
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fout.z = (fsrc.z*fsrc.w + fdst.z*fdst.w*(1 - fsrc.w))/fout.w;
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}
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Color out = { (unsigned char)(fout.x*255.0f), (unsigned char)(fout.y*255.0f), (unsigned char)(fout.z*255.0f), (unsigned char)(fout.w*255.0f) };
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return out;
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}
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void ColorWrite(unsigned char *dstPtr, Color color, int format)
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{
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switch (format)
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{
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case UNCOMPRESSED_GRAYSCALE:
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{
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// NOTE: Calculate grayscale equivalent color
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Vector3 coln = { (float)color.r/255.0f, (float)color.g/255.0f, (float)color.b/255.0f };
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unsigned char gray = (unsigned char)((coln.x*0.299f + coln.y*0.587f + coln.z*0.114f)*255.0f);
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dstPtr[0] = gray;
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} break;
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case UNCOMPRESSED_GRAY_ALPHA:
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{
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// NOTE: Calculate grayscale equivalent color
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Vector3 coln = { (float)color.r/255.0f, (float)color.g/255.0f, (float)color.b/255.0f };
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unsigned char gray = (unsigned char)((coln.x*0.299f + coln.y*0.587f + coln.z*0.114f)*255.0f);
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dstPtr[0] = gray;
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dstPtr[1] = color.a;
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} break;
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case UNCOMPRESSED_R5G6B5:
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{
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// NOTE: Calculate R5G6B5 equivalent color
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Vector3 coln = { (float)color.r/255.0f, (float)color.g/255.0f, (float)color.b/255.0f };
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unsigned char r = (unsigned char)(round(coln.x*31.0f));
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unsigned char g = (unsigned char)(round(coln.y*63.0f));
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unsigned char b = (unsigned char)(round(coln.z*31.0f));
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((unsigned short *)dstPtr)[0] = (unsigned short)r << 11 | (unsigned short)g << 5 | (unsigned short)b;
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} break;
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case UNCOMPRESSED_R5G5B5A1:
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{
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// NOTE: Calculate R5G5B5A1 equivalent color
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Vector4 coln = { (float)color.r/255.0f, (float)color.g/255.0f, (float)color.b/255.0f, (float)color.a/255.0f };
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unsigned char r = (unsigned char)(round(coln.x*31.0f));
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unsigned char g = (unsigned char)(round(coln.y*31.0f));
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unsigned char b = (unsigned char)(round(coln.z*31.0f));
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unsigned char a = (coln.w > ((float)R5G5B5A1_ALPHA_THRESHOLD/255.0f))? 1 : 0;;
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((unsigned short *)dstPtr)[0] = (unsigned short)r << 11 | (unsigned short)g << 6 | (unsigned short)b << 1 | (unsigned short)a;
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} break;
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case UNCOMPRESSED_R4G4B4A4:
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{
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// NOTE: Calculate R5G5B5A1 equivalent color
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Vector4 coln = { (float)color.r/255.0f, (float)color.g/255.0f, (float)color.b/255.0f, (float)color.a/255.0f };
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unsigned char r = (unsigned char)(round(coln.x*15.0f));
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unsigned char g = (unsigned char)(round(coln.y*15.0f));
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unsigned char b = (unsigned char)(round(coln.z*15.0f));
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unsigned char a = (unsigned char)(round(coln.w*15.0f));
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((unsigned short *)dstPtr)[0] = (unsigned short)r << 12 | (unsigned short)g << 8 | (unsigned short)b << 4 | (unsigned short)a;
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} break;
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case UNCOMPRESSED_R8G8B8:
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{
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dstPtr[0] = color.r;
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dstPtr[1] = color.g;
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dstPtr[2] = color.b;
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} break;
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case UNCOMPRESSED_R8G8B8A8:
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{
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dstPtr[0] = color.r;
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dstPtr[1] = color.g;
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dstPtr[2] = color.b;
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dstPtr[3] = color.a;
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} break;
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default: break;
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}
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}
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// Draw an image (source) within an image (destination)
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// NOTE: Color tint is applied to source image
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void ImageDraw(Image *dst, Image src, Rectangle srcRec, Rectangle dstRec, Color tint)
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@ -3538,8 +3385,304 @@ void DrawTextureNPatch(Texture2D texture, NPatchInfo nPatchInfo, Rectangle destR
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}
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}
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// Get pixel data size in bytes (image or texture)
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// NOTE: Size depends on pixel format
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// Returns hexadecimal value for a Color
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int ColorToInt(Color color)
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{
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return (((int)color.r << 24) | ((int)color.g << 16) | ((int)color.b << 8) | (int)color.a);
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}
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// Returns color normalized as float [0..1]
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Vector4 ColorNormalize(Color color)
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{
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Vector4 result;
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result.x = (float)color.r/255.0f;
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result.y = (float)color.g/255.0f;
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result.z = (float)color.b/255.0f;
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result.w = (float)color.a/255.0f;
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return result;
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}
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// Returns color from normalized values [0..1]
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Color ColorFromNormalized(Vector4 normalized)
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{
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Color result;
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result.r = (unsigned char)(normalized.x*255.0f);
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result.g = (unsigned char)(normalized.y*255.0f);
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result.b = (unsigned char)(normalized.z*255.0f);
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result.a = (unsigned char)(normalized.w*255.0f);
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return result;
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}
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// Returns HSV values for a Color
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// NOTE: Hue is returned as degrees [0..360]
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Vector3 ColorToHSV(Color color)
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{
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Vector3 hsv = { 0 };
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Vector3 rgb = { (float)color.r/255.0f, (float)color.g/255.0f, (float)color.b/255.0f };
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float min, max, delta;
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min = rgb.x < rgb.y? rgb.x : rgb.y;
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min = min < rgb.z? min : rgb.z;
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max = rgb.x > rgb.y? rgb.x : rgb.y;
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max = max > rgb.z? max : rgb.z;
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hsv.z = max; // Value
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delta = max - min;
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if (delta < 0.00001f)
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{
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hsv.y = 0.0f;
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hsv.x = 0.0f; // Undefined, maybe NAN?
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return hsv;
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}
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if (max > 0.0f)
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{
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// NOTE: If max is 0, this divide would cause a crash
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hsv.y = (delta/max); // Saturation
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}
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else
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{
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// NOTE: If max is 0, then r = g = b = 0, s = 0, h is undefined
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hsv.y = 0.0f;
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hsv.x = NAN; // Undefined
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return hsv;
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}
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// NOTE: Comparing float values could not work properly
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if (rgb.x >= max) hsv.x = (rgb.y - rgb.z)/delta; // Between yellow & magenta
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else
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{
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if (rgb.y >= max) hsv.x = 2.0f + (rgb.z - rgb.x)/delta; // Between cyan & yellow
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else hsv.x = 4.0f + (rgb.x - rgb.y)/delta; // Between magenta & cyan
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}
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hsv.x *= 60.0f; // Convert to degrees
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if (hsv.x < 0.0f) hsv.x += 360.0f;
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return hsv;
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}
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// Returns a Color from HSV values
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// Implementation reference: https://en.wikipedia.org/wiki/HSL_and_HSV#Alternative_HSV_conversion
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// NOTE: Color->HSV->Color conversion will not yield exactly the same color due to rounding errors
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Color ColorFromHSV(Vector3 hsv)
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{
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Color color = { 0, 0, 0, 255 };
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float h = hsv.x, s = hsv.y, v = hsv.z;
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// Red channel
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float k = fmodf((5.0f + h/60.0f), 6);
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float t = 4.0f - k;
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k = (t < k)? t : k;
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k = (k < 1)? k : 1;
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k = (k > 0)? k : 0;
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color.r = (unsigned char)((v - v*s*k)*255.0f);
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// Green channel
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k = fmodf((3.0f + h/60.0f), 6);
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t = 4.0f - k;
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k = (t < k)? t : k;
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k = (k < 1)? k : 1;
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k = (k > 0)? k : 0;
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color.g = (unsigned char)((v - v*s*k)*255.0f);
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// Blue channel
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k = fmodf((1.0f + h/60.0f), 6);
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t = 4.0f - k;
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k = (t < k)? t : k;
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k = (k < 1)? k : 1;
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k = (k > 0)? k : 0;
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color.b = (unsigned char)((v - v*s*k)*255.0f);
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return color;
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}
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// Returns color with alpha applied, alpha goes from 0.0f to 1.0f
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Color ColorAlpha(Color color, float alpha)
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{
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if (alpha < 0.0f) alpha = 0.0f;
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else if (alpha > 1.0f) alpha = 1.0f;
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return (Color){color.r, color.g, color.b, (unsigned char)(255.0f*alpha)};
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}
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// Returns src alpha-blended into dst color with tint
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Color ColorAlphaBlend(Color dst, Color src, Color tint)
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{
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Vector4 fdst = ColorNormalize(dst);
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Vector4 fsrc = ColorNormalize(src);
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Vector4 ftint = ColorNormalize(tint);
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Vector4 fout = { 0.0f };
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// Apply color tint to source image
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fsrc.x *= ftint.x; fsrc.y *= ftint.y; fsrc.z *= ftint.z; fsrc.w *= ftint.w;
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if (fsrc.w <= 0.0f) fout = fdst;
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else if (fsrc.w >= 1.0f) fout = fsrc;
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else
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{
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fout.w = fsrc.w + fdst.w*(1.0f - fsrc.w);
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if (fout.w > 0.0f)
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{
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fout.x = (fsrc.x*fsrc.w + fdst.x*fdst.w*(1 - fsrc.w))/fout.w;
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fout.y = (fsrc.y*fsrc.w + fdst.y*fdst.w*(1 - fsrc.w))/fout.w;
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fout.z = (fsrc.z*fsrc.w + fdst.z*fdst.w*(1 - fsrc.w))/fout.w;
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}
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}
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Color out = { (unsigned char)(fout.x*255.0f), (unsigned char)(fout.y*255.0f), (unsigned char)(fout.z*255.0f), (unsigned char)(fout.w*255.0f) };
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return out;
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}
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// Returns a Color struct from hexadecimal value
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Color GetColor(int hexValue)
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{
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Color color;
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color.r = (unsigned char)(hexValue >> 24) & 0xFF;
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color.g = (unsigned char)(hexValue >> 16) & 0xFF;
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color.b = (unsigned char)(hexValue >> 8) & 0xFF;
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color.a = (unsigned char)hexValue & 0xFF;
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return color;
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}
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// Get color from a pixel from certain format
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Color GetPixelColor(void *srcPtr, int format)
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{
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Color col = { 0 };
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switch (format)
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{
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case UNCOMPRESSED_GRAYSCALE: col = (Color){ ((unsigned char *)srcPtr)[0], ((unsigned char *)srcPtr)[0], ((unsigned char *)srcPtr)[0], 255 }; break;
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case UNCOMPRESSED_GRAY_ALPHA: col = (Color){ ((unsigned char *)srcPtr)[0], ((unsigned char *)srcPtr)[0], ((unsigned char *)srcPtr)[0], ((unsigned char *)srcPtr)[1] }; break;
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case UNCOMPRESSED_R5G6B5:
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{
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col.r = (unsigned char)(((((unsigned short *)srcPtr)[0] >> 11)*31)/255);
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col.g = (unsigned char)((((((unsigned short *)srcPtr)[0] >> 5) & 0b0000000000111111)*63)/255);
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col.b = (unsigned char)(((((unsigned short *)srcPtr)[0] & 0b0000000000011111)*31)/255);
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col.a = 255;
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} break;
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case UNCOMPRESSED_R5G5B5A1:
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{
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col.r = (unsigned char)(((((unsigned short *)srcPtr)[0] >> 11)*31)/255);
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col.g = (unsigned char)((((((unsigned short *)srcPtr)[0] >> 6) & 0b0000000000011111)*31)/255);
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col.b = (unsigned char)(((((unsigned short *)srcPtr)[0] & 0b0000000000011111)*31)/255);
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col.a = (((unsigned short *)srcPtr)[0] & 0b0000000000000001)? 255 : 0;
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} break;
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case UNCOMPRESSED_R4G4B4A4:
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{
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col.r = (unsigned char)(((((unsigned short *)srcPtr)[0] >> 12)*15)/255);
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col.g = (unsigned char)((((((unsigned short *)srcPtr)[0] >> 8) & 0b0000000000001111)*15)/255);
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col.b = (unsigned char)((((((unsigned short *)srcPtr)[0] >> 4) & 0b0000000000001111)*15)/255);
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col.a = (unsigned char)(((((unsigned short *)srcPtr)[0] & 0b0000000000001111)*15)/255);
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} break;
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case UNCOMPRESSED_R8G8B8A8: col = (Color){ ((unsigned char *)srcPtr)[0], ((unsigned char *)srcPtr)[1], ((unsigned char *)srcPtr)[2], ((unsigned char *)srcPtr)[3] }; break;
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case UNCOMPRESSED_R8G8B8: col = (Color){ ((unsigned char *)srcPtr)[0], ((unsigned char *)srcPtr)[1], ((unsigned char *)srcPtr)[2], 255 }; break;
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// TODO: case UNCOMPRESSED_R32: break;
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// TODO: case UNCOMPRESSED_R32G32B32: break;
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// TODO: case UNCOMPRESSED_R32G32B32A32: break;
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default: break;
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}
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return col;
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}
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// Set pixel color formatted into destination pointer
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void SetPixelColor(void *dstPtr, Color color, int format)
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{
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switch (format)
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{
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case UNCOMPRESSED_GRAYSCALE:
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{
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// NOTE: Calculate grayscale equivalent color
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Vector3 coln = { (float)color.r/255.0f, (float)color.g/255.0f, (float)color.b/255.0f };
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unsigned char gray = (unsigned char)((coln.x*0.299f + coln.y*0.587f + coln.z*0.114f)*255.0f);
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((unsigned char *)dstPtr)[0] = gray;
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} break;
|
||||
case UNCOMPRESSED_GRAY_ALPHA:
|
||||
{
|
||||
// NOTE: Calculate grayscale equivalent color
|
||||
Vector3 coln = { (float)color.r/255.0f, (float)color.g/255.0f, (float)color.b/255.0f };
|
||||
unsigned char gray = (unsigned char)((coln.x*0.299f + coln.y*0.587f + coln.z*0.114f)*255.0f);
|
||||
|
||||
((unsigned char *)dstPtr)[0] = gray;
|
||||
((unsigned char *)dstPtr)[1] = color.a;
|
||||
|
||||
} break;
|
||||
case UNCOMPRESSED_R5G6B5:
|
||||
{
|
||||
// NOTE: Calculate R5G6B5 equivalent color
|
||||
Vector3 coln = { (float)color.r/255.0f, (float)color.g/255.0f, (float)color.b/255.0f };
|
||||
|
||||
unsigned char r = (unsigned char)(round(coln.x*31.0f));
|
||||
unsigned char g = (unsigned char)(round(coln.y*63.0f));
|
||||
unsigned char b = (unsigned char)(round(coln.z*31.0f));
|
||||
|
||||
((unsigned short *)dstPtr)[0] = (unsigned short)r << 11 | (unsigned short)g << 5 | (unsigned short)b;
|
||||
|
||||
} break;
|
||||
case UNCOMPRESSED_R5G5B5A1:
|
||||
{
|
||||
// NOTE: Calculate R5G5B5A1 equivalent color
|
||||
Vector4 coln = { (float)color.r/255.0f, (float)color.g/255.0f, (float)color.b/255.0f, (float)color.a/255.0f };
|
||||
|
||||
unsigned char r = (unsigned char)(round(coln.x*31.0f));
|
||||
unsigned char g = (unsigned char)(round(coln.y*31.0f));
|
||||
unsigned char b = (unsigned char)(round(coln.z*31.0f));
|
||||
unsigned char a = (coln.w > ((float)R5G5B5A1_ALPHA_THRESHOLD/255.0f))? 1 : 0;;
|
||||
|
||||
((unsigned short *)dstPtr)[0] = (unsigned short)r << 11 | (unsigned short)g << 6 | (unsigned short)b << 1 | (unsigned short)a;
|
||||
|
||||
} break;
|
||||
case UNCOMPRESSED_R4G4B4A4:
|
||||
{
|
||||
// NOTE: Calculate R5G5B5A1 equivalent color
|
||||
Vector4 coln = { (float)color.r/255.0f, (float)color.g/255.0f, (float)color.b/255.0f, (float)color.a/255.0f };
|
||||
|
||||
unsigned char r = (unsigned char)(round(coln.x*15.0f));
|
||||
unsigned char g = (unsigned char)(round(coln.y*15.0f));
|
||||
unsigned char b = (unsigned char)(round(coln.z*15.0f));
|
||||
unsigned char a = (unsigned char)(round(coln.w*15.0f));
|
||||
|
||||
((unsigned short *)dstPtr)[0] = (unsigned short)r << 12 | (unsigned short)g << 8 | (unsigned short)b << 4 | (unsigned short)a;
|
||||
|
||||
} break;
|
||||
case UNCOMPRESSED_R8G8B8:
|
||||
{
|
||||
((unsigned char *)dstPtr)[0] = color.r;
|
||||
((unsigned char *)dstPtr)[1] = color.g;
|
||||
((unsigned char *)dstPtr)[2] = color.b;
|
||||
|
||||
} break;
|
||||
case UNCOMPRESSED_R8G8B8A8:
|
||||
{
|
||||
((unsigned char *)dstPtr)[0] = color.r;
|
||||
((unsigned char *)dstPtr)[1] = color.g;
|
||||
((unsigned char *)dstPtr)[2] = color.b;
|
||||
((unsigned char *)dstPtr)[3] = color.a;
|
||||
|
||||
} break;
|
||||
default: break;
|
||||
}
|
||||
}
|
||||
|
||||
// Get pixel data size in bytes for certain format
|
||||
// NOTE: Size can be requested for Image or Texture data
|
||||
int GetPixelDataSize(int width, int height, int format)
|
||||
{
|
||||
int dataSize = 0; // Size in bytes
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue