40 lines
1.3 KiB
C
40 lines
1.3 KiB
C
#include "characters.h"
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#include "draw.h"
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void draw_image( struct image canvas, struct image texture, size_t xpos, size_t ypos, bool vertical) {
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for (size_t y = 0; y < texture.height; y++) {
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for (size_t x = 0; x < texture.width; x++) {
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int canvas_y = (vertical ? x : y) + ypos;
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int canvas_x = (vertical ? y : x) + xpos;
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if (canvas_x < 0 || canvas_x >= (int) canvas.width - 1 || canvas_y < 0 || canvas_y >= (int) canvas.height - 1) continue;
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canvas.buf[canvas_y * canvas.width + canvas_x] = texture.buf[y * texture.width + x];
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}
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}
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}
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void draw_glyph( struct image canvas, uint32_t glyph, size_t xpos, size_t ypos, struct color color) {
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struct image texture = {
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.width = 5,
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.height = 6,
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.bufsize = 5 * 6,
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.buf = (uint32_t[30]) {0}
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};
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for (size_t y = 0; y < texture.height; y++) {
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for (size_t x = 0; x < texture.width; x++) {
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if ((glyph >> ((texture.height - y - 1) * texture.width + (texture.width - x - 1))) & 1) {
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texture.color[y * texture.width + x] = color;
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}
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}
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}
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draw_image(canvas, texture, xpos, ypos, 0);
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}
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void draw_text(struct image canvas, char *string, size_t xpos, size_t ypos, struct color color) {
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for (size_t i = 0; string[i]; i++) {
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uint32_t glyph = characters[string[i] - ' '];
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draw_glyph(canvas, glyph, xpos + i * 5, ypos, color);
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}
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}
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