bug fix: Stop ignoring spot lights angle (since #76)

Author: TiagoCavalcante

examples/test/spot_light.html

@@ -20,7 +20,7 @@
 				lighting: [
 					{
 						type: 'spot',
-						angle: 1,
+						angle: 0.1,
 						color: [1, 1, 1],
 						coords: [[2, 2, 2]],
 						target: [[0, 0, 0]]

src/primitives/polygon.js

@@ -235,7 +235,7 @@ export default function ({ color, coords, edgeForm = {}, opacity = 1, vertexNorm
 
 					void getSpotLightInfo(const in SpotLight spotLight, out IncidentLight light) {
 						light.direction = normalize(spotLight.position + vViewPosition);
-						light.color = spotLight.color * max(dot(light.direction, spotLight.direction), 0.0);
+						light.color = spotLight.color * max(smoothstep(coneCos, coneCos, dot(light.direction, spotLight.direction)), 0.0);
 					}
 				#endif
 

src/primitives/sphere.js

@@ -88,7 +88,7 @@ export default function ({ color, coords, opacity = 1, radius = 1 }, extent) {
 
 					void getSpotLightInfo(const in SpotLight spotLight, const in GeometricContext geometry, out IncidentLight light) {
 						light.direction = normalize(spotLight.position - geometry.position);
-						light.color = spotLight.color * max(dot(light.direction, spotLight.direction), 0.0);
+						light.color = spotLight.color * max(smoothstep(spotLight.coneCos, spotLight.coneCos, dot(light.direction, spotLight.direction)), 0.0);
 					}
 				#endif
 

src/primitives/tube.js

@@ -178,7 +178,7 @@ export default function ({ color, coords, opacity = 1, radius = 1 }, extent) {
 						float angleCos = dot(light.direction, spotLight.direction);
 
 						if (angleCos > 0.0) {
-							light.color = spotLight.color * max(dot(light.direction, spotLight.direction), 0.0);
+							light.color = spotLight.color * max(smoothstep(spotLight.coneCos, spotLight.coneCos, dot(light.direction, spotLight.direction)), 0.0);
 						} else {
 							light.color = vec3(0.0);
 						}

src/primitives/uniformPolyhedron.js

@@ -416,7 +416,7 @@ export default function ({ color, coords, edgeForm = {}, edgeLength = 1, opacity
 
 					void getSpotLightInfo(const in SpotLight spotLight, out IncidentLight light) {
 						light.direction = normalize(spotLight.position + vViewPosition);
-						light.color = spotLight.color * max(dot(light.direction, spotLight.direction), 0.0);
+						light.color = spotLight.color * max(smoothstep(spotLight.coneCos, spotLight.coneCos, dot(light.direction, spotLight.direction)), 0.0);
 					}
 				#endif
 

vendors/three.js

@@ -19991,7 +19991,7 @@
 				 uniforms.distance = distance;
 
 				 uniforms.coneCos = Math.cos( light.angle );
-				 uniforms.penumbraCos = Math.cos( light.angle * ( 1 - light.penumbra ) );
+				 uniforms.penumbraCos = Math.cos( light.angle );
 				 uniforms.decay = light.decay;
 
 				 if ( light.castShadow ) {