50 lines
1.0 KiB
C
50 lines
1.0 KiB
C
//
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// Created by william on 16/05/24.
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//
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#include <assert.h>
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#include <string.h>
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#include <stdlib.h>
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#include "canvas.h"
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Canvas canvas_init(int width, int height) {
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assert(width > 0);
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assert(height > 0);
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Canvas canvas;
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canvas.width = width;
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canvas.height = height;
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int size = width * height;
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canvas.pixels = malloc(sizeof(Pixel) * size);
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return canvas;
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}
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void canvas_uninit(Canvas *canvas) {
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assert(canvas != NULL);
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assert(canvas->pixels != NULL);
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free(canvas->pixels);
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}
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void canvas_draw(Canvas *canvas, Pixel pixel, int index) {
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assert(index >= 0);
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assert(index < canvas->width * canvas->height);
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canvas->pixels[index] = pixel;
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}
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void canvas_draw_pos(Canvas *canvas, Pixel pixel, int x, int y) {
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assert(x >= 0);
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assert(x < canvas->width);
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assert(y >= 0);
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assert(y < canvas->height);
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int index = x + y * canvas->width;
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canvas_draw(canvas, pixel, index);
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}
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void canvas_reset(Canvas *canvas) {
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memset(canvas->pixels, 0, sizeof(Pixel) * (canvas->width * canvas->height));
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} |