54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
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#include "painter.h"
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#include "stdio.h"
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lp_pixel lp_rgb(uint8_t r, uint8_t g, uint8_t b) {
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return (lp_pixel){r, g, b};
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}
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lp_painter *lp_painter_create(size_t width, size_t height) {
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lp_painter *painter = malloc(sizeof(lp_painter));
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lp_pixel *buf = malloc(width * height * sizeof(lp_pixel));
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painter->buf = buf;
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painter->width = width;
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painter->height = height;
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return painter;
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}
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void lp_painter_free(lp_painter *painter) {
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if (painter) {
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if (painter->buf) {
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free(painter->buf);
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}
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free(painter);
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}
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}
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void lp_painter_fill_rect(lp_painter *painter, lp_pixel fill_color, size_t pos_x, size_t pos_y, size_t width, size_t height) {
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for (size_t y = pos_y; y < pos_y + height; y++) {
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for (size_t x = pos_x; x < pos_x + width; x++) {
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size_t index = y * painter->width + x;
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painter->buf[index] = fill_color;
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}
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}
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}
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void lp_painter_save_ppm(lp_painter *painter, const char *filename) {
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FILE *fp = fopen(filename, "w");
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if (fp == NULL) {
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fprintf(stderr, "Failed to open file");
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return;
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}
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fprintf(fp, "P6\n%zu %zu 255\n", painter->width, painter->height);
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for (size_t i = 0; i < painter->width * painter->height; i++) {
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fwrite(&painter->buf[i].r, sizeof(uint8_t), 1, fp);
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fwrite(&painter->buf[i].g, sizeof(uint8_t), 1, fp);
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fwrite(&painter->buf[i].b, sizeof(uint8_t), 1, fp);
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}
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fwrite(painter->buf, sizeof(lp_pixel), painter->width * painter->height, fp);
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fclose(fp);
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}
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