initial commit

oscar64/samples/hires/fractaltree.c

@@ -0,0 +1,64 @@
+#include <c64/memmap.h>
+#include <c64/vic.h>
+#include <gfx/bitmap.h>
+#include <math.h>
+#include <string.h>
+#include <conio.h>
+
+
+char *	const	Color = (char *)0xd000;
+char *	const	Hires =	(char *)0xe000;
+
+Bitmap		Screen;
+ClipRect	Clip = {0, 0, 320, 200};
+
+void init(void)
+{
+	mmap_trampoline();
+	mmap_set(MMAP_RAM);
+
+	memset(Color, 0x01, 1000);
+	memset(Hires, 0x00, 8000);
+
+	mmap_set(MMAP_NO_ROM);
+
+	vic_setmode(VICM_HIRES, Color, Hires);
+
+	vic.color_border = VCOL_WHITE;
+
+	bm_init(&Screen, Hires, 40, 25);	
+}
+
+void done(void)
+{
+	mmap_set(MMAP_ROM);
+
+	getch();
+
+	vic_setmode(VICM_TEXT, (char *)0x0400, (char *)0x1000);
+}
+
+void draw(float x, float y, float a, float s)
+{
+	if (s < 6.0)
+		return;
+
+	float	tx = x + cos(a) * s;
+	float	ty = y + sin(a) * s;
+
+	bm_line(&Screen, &Clip, x, y, tx, ty, 0xff, LINOP_SET);
+
+	draw(tx, ty, a + 0.3, s * 0.9);
+	draw(tx, ty, a - 0.4, s * 0.8);
+}
+
+int main(void)
+{
+	init();
+
+	draw(140, 199, PI * 1.5, 32);
+
+	done();
+	
+	return 0;
+}