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#include "draw.h"
#include <math.h>
#include <string.h>
void draw_wallpaper(const DISPLAY *disp) {
uint32_t *dst = disp->back_buffer;
uint32_t *src = disp->wallpaper_buffer;
const uint32_t n = disp->size / disp->bpp;
for (int i = 0; i < n; i++) {
*dst = *src;
dst++;
src++;
}
}
void draw_outline(DISPLAY *disp, int x, int y, int sx, int sy, int border_px,
uint32_t color) {
// Top
draw_rectangle(disp, x, y, sx + border_px, border_px, color);
// Bottom
draw_rectangle(disp, x, y + sy+border_px, sx + border_px, border_px, color);
// Left
draw_rectangle(disp, x, y, border_px, sy + border_px * 2, color);
// Right
draw_rectangle(disp, x + sx + border_px, y, border_px, sy + border_px * 2,
color);
}
void draw_line(DISPLAY *disp, int sx, int sy, int dx, int dy, uint32_t color) {
int x = sx;
int y = sy;
for (;;) {
// Bounds checking
if (y * disp->width + x > disp->height * disp->width)
break;
if (x >= dx - 1 && y >= dy - 1) {
break;
}
uint32_t *ptr =
disp->back_buffer + (disp->bpp * y * disp->width) + (x * disp->bpp);
*ptr = color;
if (x < dx - 1) {
x++;
}
if (y < dy - 1) {
y++;
}
}
}
void draw_rectangle(DISPLAY *disp, int x, int y, int sx, int sy,
uint32_t color) {
for (int i = y; i < y + sy; i++) {
for (int j = x; j < x + sx; j++) {
// Bounds checking
if (i * disp->width + j > disp->height * disp->width) {
break;
}
uint32_t *ptr =
disp->back_buffer + (disp->bpp * i * disp->width) + (j * disp->bpp);
*ptr = color;
}
}
}
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