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Work on ImageResizeCanvas()

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Ray 2018-06-02 12:47:05 +02:00
parent 2536bea379
commit afc4181752
1 changed files with 49 additions and 9 deletions
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58
src/textures.c
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@ -1067,18 +1067,58 @@ void ImageResizeNN(Image *image,int newWidth,int newHeight)
free(pixels);
}
// Resize canvas, using anchor point and color filling
void ImageResizeCanvas(Image *image, int newWidth,int newHeight, int anchor, Color color)
// Resize canvas and fill with color
// NOTE: Resize offset is relative to the top-left corner of the original image
void ImageResizeCanvas(Image *image, int newWidth,int newHeight, int offsetX, int offsetY, Color color)
{
Image imTemp = GenImageColor(newWidth, newHeight, color);
Rectangle rec = { 0, 0, image->width, image->height };
Rectangle srcRec = { 0, 0, image->width, image->height };
Rectangle dstRec = { offsetX, offsetY, srcRec.width, srcRec.height };
// TODO: consider anchor properly
ImageDraw(&imTemp, *image, rec, rec);
ImageFormat(&imTemp, image->format);
UnloadImage(*image);
*image = imTemp;
if ((newWidth > image->width) && (newHeight > image->height))
{
// Consider anchor properly
/*
switch (anchor)
{
case 0: break; // TOP-LEFT corner --> dstRec = srcRec
case 1: dstRec.x = (newWidth - image->width)/2; break; // TOP side
case 2: dstRec.x = newWidth - image->width; break; // TOP-RIGHT corner
case 3: dstRec.y = (newHeight - image->height)/2; break; // LEFT side
case 4: // CENTER
{
dstRec.x = (newWidth - image->width)/2;
dstRec.y = (newHeight - image->height)/2;
} break;
case 5: // RIGHT side
{
dstRec.x = newWidth - image->width;
dstRec.y = (newHeight - image->height)/2;
} break;
case 6: dstRec.y = newHeight - image->height; break; // BOTTOM-LEFT corner
case 7: // BOTTOM side
{
dstRec.x = (newWidth - image->width)/2;
dstRec.y = newHeight - image->height;
} break;
case 8: // BOTTOM-RIGHT side
{
dstRec.x = newWidth - image->width;
dstRec.y = newHeight - image->height;
} break;
default: break;
}
*/
ImageDraw(&imTemp, *image, srcRec, dstRec);
ImageFormat(&imTemp, image->format);
UnloadImage(*image);
*image = imTemp;
}
else
{
// TODO: ImageCrop(), define proper cropping rectangle
}
}
// Generate all mipmap levels for a provided image