starting infcubes part

[dosdemo] / src / infcubes.c

diff --git a/src/infcubes.c b/src/infcubes.c
new file mode 100644 (file)
index 0000000..5fe7df9
--- /dev/null
+++ b/src/infcubes.c
@@ -0,0 +1,109 @@
+#include <stdio.h>
+#include <math.h>
+#include "demo.h"
+#include "3dgfx.h"
+#include "screen.h"
+#include "cfgopt.h"
+
+static int init(void);
+static void destroy(void);
+static void start(long trans_time);
+static void draw(void);
+static void draw_cube(void);
+
+static struct screen scr = {
+       "infcubes",
+       init,
+       destroy,
+       start, 0,
+       draw
+};
+
+static float cam_theta, cam_phi;
+static float cam_dist = 5;
+
+struct screen *infcubes_screen(void)
+{
+       return &scr;
+}
+
+
+static int init(void)
+{
+       return 0;
+}
+
+static void destroy(void)
+{
+}
+
+static void start(long trans_time)
+{
+       g3d_matrix_mode(G3D_PROJECTION);
+       g3d_load_identity();
+       g3d_perspective(50.0, 1.3333333, 0.5, 100.0);
+
+       g3d_enable(G3D_LIGHTING);
+       g3d_enable(G3D_LIGHT0);
+}
+
+static void update(void)
+{
+       mouse_orbit_update(&cam_theta, &cam_phi, &cam_dist);
+}
+
+static void draw(void)
+{
+       update();
+
+       g3d_matrix_mode(G3D_MODELVIEW);
+       g3d_load_identity();
+       g3d_translate(0, 0, -cam_dist);
+       g3d_rotate(cam_phi, 1, 0, 0);
+       g3d_rotate(cam_theta, 0, 1, 0);
+       if(opt.sball) {
+               g3d_mult_matrix(sball_matrix);
+       }
+
+       memset(fb_pixels, 0, fb_width * fb_height * 2);
+
+       draw_cube();
+
+       swap_buffers(fb_pixels);
+}
+
+static void draw_cube(void)
+{
+       g3d_begin(G3D_QUADS);
+       g3d_normal(0, 0, 1);
+       g3d_vertex(-1, -1, 1);
+       g3d_vertex(1, -1, 1);
+       g3d_vertex(1, 1, 1);
+       g3d_vertex(-1, 1, 1);
+       g3d_normal(1, 0, 0);
+       g3d_vertex(1, -1, 1);
+       g3d_vertex(1, -1, -1);
+       g3d_vertex(1, 1, -1);
+       g3d_vertex(1, 1, 1);
+       g3d_normal(0, 0, -1);
+       g3d_vertex(1, -1, -1);
+       g3d_vertex(-1, -1, -1);
+       g3d_vertex(-1, 1, -1);
+       g3d_vertex(1, 1, -1);
+       g3d_normal(-1, 0, 0);
+       g3d_vertex(-1, -1, -1);
+       g3d_vertex(-1, -1, 1);
+       g3d_vertex(-1, 1, 1);
+       g3d_vertex(-1, 1, -1);
+       g3d_normal(0, 1, 0);
+       g3d_vertex(-1, 1, 1);
+       g3d_vertex(1, 1, 1);
+       g3d_vertex(1, 1, -1);
+       g3d_vertex(-1, 1, -1);
+       g3d_normal(0, -1, 0);
+       g3d_vertex(1, -1, 1);
+       g3d_vertex(-1, -1, 1);
+       g3d_vertex(-1, -1, -1);
+       g3d_vertex(1, -1, -1);
+       g3d_end();
+}