diff options
Diffstat (limited to 'src/modules/stars')
| -rw-r--r-- | src/modules/stars/stars.c | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/src/modules/stars/stars.c b/src/modules/stars/stars.c index 9c1de5b..bf7678a 100644 --- a/src/modules/stars/stars.c +++ b/src/modules/stars/stars.c @@ -88,6 +88,8 @@ static void stars_render_fragment(void *context, unsigned cpu, fb_fragment_t *fr int width = fragment->width, height = fragment->height; + float max_radius=1.f+((width+height)*.001f); + fb_fragment_zero(fragment); iterator=ctxt->points; @@ -113,15 +115,30 @@ static void stars_render_fragment(void *context, unsigned cpu, fb_fragment_t *fr pos_x = ((x+1.f)*.5f)*(float)width; pos_y = ((y+1.f)*.5f)*(float)height; - if (pos_x>0 && pos_x<width && pos_y >0 && pos_y < height) { - if(iterator->z<0.1) - opacity = iterator->z*10; - else - opacity = 1; + if(iterator->z<0.1) + opacity = iterator->z*10; + else + opacity = 1; + if (pos_x>0 && pos_x<width && pos_y>0 && pos_y<height) fb_fragment_put_pixel_unchecked(fragment, pos_x, pos_y, makergb(0xFF, 0xFF, 0xFF, opacity)); + for(int my_y=floorf(pos_y-max_radius); my_y<=ceilf(pos_y+max_radius); my_y++) + for(int my_x=floorf(pos_x-max_radius); my_x<=ceilf(pos_x+max_radius); my_x++) { + + //Is the point within our viewing window? + if (!(my_x>0 && my_x<width && my_y>0 && my_y<height)) + continue; + + //Is the point within the circle? + if(powf(my_x-pos_x, 2)+powf(my_y-pos_y, 2) > powf((iterator->z*max_radius), 2)) + continue; + + + fb_fragment_put_pixel_unchecked(fragment, my_x, my_y, + makergb(0xFF, 0xFF, 0xFF, opacity)); + } iterator->z += 0.01; |