diff options
Diffstat (limited to 'Shaders/iq_sdf.cginc')
| -rw-r--r-- | Shaders/iq_sdf.cginc | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Shaders/iq_sdf.cginc b/Shaders/iq_sdf.cginc index d82e24c..7951261 100644 --- a/Shaders/iq_sdf.cginc +++ b/Shaders/iq_sdf.cginc @@ -130,6 +130,13 @@ float smoothstep_quintic(float x) return x*x*x*(x*(x*6.0-15.0)+10.0); } +float distance_from_line_segment( float3 p, float3 a, float3 b, float r ) +{ + float3 pa = p - a, ba = b - a; + float h = clamp( dot(pa,ba)/dot(ba,ba), 0.0, 1.0 ); + return length( pa - ba*h ) - r; +} + // End licensed section #endif // __IQ_SDF_INC__ |