-
-
-#define TX(ev) ((ev)->motion.motion[0])
-#define TY(ev) ((ev)->motion.motion[1])
-#define TZ(ev) ((ev)->motion.motion[2])
-#define RX(ev) ((ev)->motion.motion[3])
-#define RY(ev) ((ev)->motion.motion[4])
-#define RZ(ev) ((ev)->motion.motion[5])
-
-static int handle_sball_event(sball_event *ev)
-{
- switch(ev->type) {
- case SBALL_EV_MOTION:
- if(RX(ev) | RY(ev) | RZ(ev)) {
- float rx = (float)RX(ev);
- float ry = (float)RY(ev);
- float rz = (float)RZ(ev);
- float axis_len = sqrt(rx * rx + ry * ry + rz * rz);
- if(axis_len > 0.0) {
- rot = quat_rotate(rot, axis_len * 0.001, -rx / axis_len,
- -ry / axis_len, -rz / axis_len);
- }
- }
-
- pos.x += TX(ev) * 0.001;
- pos.y += TY(ev) * 0.001;
- pos.z += TZ(ev) * 0.001;
- break;
-
- case SBALL_EV_BUTTON:
- if(ev->button.pressed) {
- pos = v3_cons(0, 0, 0);
- rot = quat_cons(1, 0, 0, 0);
- }
- break;
- }
-
- return 0;
-}
-
-void recalc_sball_matrix(float *xform)
-{
- quat_to_mat(xform, rot);
- xform[12] = pos.x;
- xform[13] = pos.y;
- xform[14] = pos.z;
-}