ok now it works nicely in VR

[vrtris] / src / starfield.c

diff --git a/src/starfield.c b/src/starfield.c
index 6bfbe54..081a6ee 100644 (file)
--- a/src/starfield.c
+++ b/src/starfield.c
@@ -20,7 +20,7 @@ static float star_lenxy[STAR_COUNT];
 int init_starfield(void)
 {
        int i;
-       float width;
+       float width, excl_rad;
 
        if(!(tex_star = img_gltexture_load("data/pimg.png"))) {
                error_log("failed to load star texture\n");
@@ -32,10 +32,15 @@ int init_starfield(void)
        }
 
        width = star_depth / 4.0f;
+       excl_rad = 10.0f / width;
        for(i=0; i<STAR_COUNT; i++) {
-               float x = (2.0f * rand() / RAND_MAX) - 1.0;
-               float y = (2.0f * rand() / RAND_MAX) - 1.0;
-               float z = (float)rand() / RAND_MAX;
+               float x, y, z;
+
+               do {
+                       x = (2.0f * rand() / RAND_MAX) - 1.0;
+                       y = (2.0f * rand() / RAND_MAX) - 1.0;
+               } while(x * x + y * y < excl_rad * excl_rad);
+               z = (float)rand() / RAND_MAX;
 
                cgm_vcons(star + i, x * width, y * width, z * star_depth);
                star_lenxy[i] = sqrt(star[i].x * star[i].x + star[i].y * star[i].y);