Fixed light going to occluder edges

Author: srcimon

screwbox-core/src/main/java/dev/screwbox/core/graphics/internal/Lightmap.java

@@ -130,18 +130,25 @@ private void renderDirectionalLight(final DirectionalLight directionalLight) {
     }
 
     private void renderPointLight(final PointLight pointLight) {
-        final var clipArea = new Area(new Rectangle2D.Double(0, 0, lightMapSize.width(), lightMapSize.height()));
+        Rectangle2D.Double s = new Rectangle2D.Double(pointLight.position.x() / (double) scale - pointLight.radius, pointLight.position.y() / (double) scale - pointLight.radius, pointLight.radius * 2, pointLight.radius * 2);
+        final var clipArea = new Area(s);
         //TODO only when intersects
         for (final var occluder : backdropOccluders) {//TODO directly store areas?
             //TODO check bounding boxes here!
             Polygon translatedPolygon = translateRelativeToLightSource(occluder, pointLight.position);
             List<Offset> translatedOffsets = toOffsets(occluder.connect ? combine(occluder.area, translatedPolygon) : translatedPolygon);
             var translatedSmoothed = occluder.rounded ? AwtMapper.toSplinePath(translatedOffsets) : AwtMapper.toPath(translatedOffsets);
-            clipArea.subtract(new Area(translatedSmoothed));
+            Area rhs = new Area(translatedSmoothed);
+            if (rhs.intersects(s)) {
+                clipArea.subtract(rhs);
+            }
         }
         for (final var occluder : backdropOccluders) {//TODO directly store areas?
             var smoothed = occluder.rounded ? AwtMapper.toSplinePath(toOffsets(occluder.area)) : AwtMapper.toPath(toOffsets(occluder.area));
-            clipArea.add(new Area(smoothed));
+            Area rhs = new Area(smoothed);
+            if (rhs.intersects(s)) {
+                clipArea.add(rhs);
+            }
         }
         graphics.setClip(clipArea);
         applyOpacityConfig(pointLight.color());