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-rw-r--r--examples/rectangle.c61
1 files changed, 61 insertions, 0 deletions
diff --git a/examples/rectangle.c b/examples/rectangle.c
new file mode 100644
index 0000000..1b3a6f7
--- /dev/null
+++ b/examples/rectangle.c
@@ -0,0 +1,61 @@
+#define FBGL_IMPLEMENTATION
+#include "fbgl.h"
+
+int main(int argc, char *argv[])
+{
+ fbgl_t buffer;
+ if (fbgl_init("/dev/fb0", &buffer) == -1) {
+ fprintf(stdout, "Error: could not open framebuffer device\n");
+ return -1;
+ }
+
+ fbgl_set_bg(&buffer, 0xFFFFFF); // Set the background to white
+
+ fbgl_point_t start = { 100, 100 };
+ fbgl_point_t end = { 200, 200 };
+ fbgl_draw_rectangle_outline(start, end, 0xFF0000,
+ &buffer); // Draw red rectangle outline
+
+ fbgl_point_t start2 = { 600, 400 };
+ fbgl_point_t end2 = { 800, 800 };
+ uint32_t colors[] = { 0xFFC00, 0x00FF00, 0x0000FF,
+ 0xFF00FF }; // Yellow, Green, Blue, Magenta
+ size_t color_index = 0;
+
+ // Initial position of the marquee rectangle
+ int dx = 15; // Horizontal speed
+ int dy = 8; // Vertical speed
+
+ while (1) {
+ // Clear the framebuffer (set background)
+ fbgl_set_bg(&buffer, 0xFFFFFF);
+
+ // Draw the moving filled rectangle
+ fbgl_draw_rectangle_filled(start2, end2, colors[color_index],
+ &buffer);
+
+ // Move the filled rectangle by updating its position
+ start2.x += dx;
+ end2.x += dx;
+ start2.y += dy;
+ end2.y += dy;
+
+ // Reverse direction if the rectangle hits the screen boundary
+ if (start2.x <= 0 || end2.x >= buffer.width) {
+ dx = -dx;
+ color_index++;
+ }
+ if (start2.y <= 0 || end2.y >= buffer.height) {
+ dy = -dy;
+ color_index++;
+ }
+ if (color_index >= 4) {
+ color_index = 0;
+ }
+
+ usleep(50000); // Delay to make the animation visible (adjust as needed)
+ }
+
+ fbgl_destroy(&buffer);
+ return 0;
+}