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36 lines
1.3 KiB
C
36 lines
1.3 KiB
C
#pragma once
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#ifndef MMBITMAP_H
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#define MMBITMAP_H
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#include "types.h"
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#include "rgb.h"
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#include <assert.h>
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#include <stdint.h>
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struct _MMBitmap {
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uint8_t *imageBuffer; /* Pixels stored in Quad I format; */
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int32_t width; /* Never 0, unless image is NULL. */
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int32_t height; /* Never 0, unless image is NULL. */
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int32_t bytewidth; /* The aligned width (width + padding). */
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uint8_t bitsPerPixel; /* Should be either 24 or 32. */
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uint8_t bytesPerPixel; /* For convenience; should be bitsPerPixel / 8. */
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};
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typedef struct _MMBitmap MMBitmap;
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typedef MMBitmap *MMBitmapRef;
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#define MMBitmapPointInBounds(image, p) ((p).x < (image)->width && (p).y < (image)->height)
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/* Get pointer to pixel of MMBitmapRef. No bounds checking is performed */
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#define MMRGBColorRefAtPoint(image, x, y) \
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(MMRGBColor *)(assert(MMBitmapPointInBounds(image, MMPointInt32Make(x, y))), \
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((image)->imageBuffer) + (((image)->bytewidth * (y)) + ((x) * (image)->bytesPerPixel)))
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/* Dereference pixel of MMBitmapRef. Again, no bounds checking is performed. */
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#define MMRGBColorAtPoint(image, x, y) *MMRGBColorRefAtPoint(image, x, y)
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/* Hex/integer value of color at point. */
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#define MMRGBHexAtPoint(image, x, y) hexFromMMRGB(MMRGBColorAtPoint(image, x, y))
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#endif /* MMBITMAP_H */ |