Add existing to tracked

node_modules/@cesium/engine/Source/Shaders/Voxels/Intersection.js

@@ -0,0 +1,52 @@
+//This file is automatically rebuilt by the Cesium build process.
+export default "// Main intersection function for Voxel scenes.\n\
+// See IntersectBox.glsl, IntersectCylinder.glsl, or IntersectEllipsoid.glsl\n\
+// for the definition of intersectShape. The appropriate function is selected\n\
+// based on the VoxelPrimitive shape type, and added to the shader in\n\
+// Scene/VoxelRenderResources.js.\n\
+// See also IntersectClippingPlane.glsl and IntersectDepth.glsl.\n\
+// See IntersectionUtils.glsl for the definitions of Ray, NO_HIT,\n\
+// getFirstIntersection, initializeIntersections, nextIntersection.\n\
+\n\
+/* Intersection defines (set in Scene/VoxelRenderResources.js)\n\
+#define INTERSECTION_COUNT ###\n\
+*/\n\
+\n\
+RayShapeIntersection intersectScene(in vec2 screenCoord, in Ray ray, in Ray rayEC, out Intersections ix) {\n\
+    // Do a ray-shape intersection to find the exact starting and ending points.\n\
+    intersectShape(ray, rayEC, ix);\n\
+\n\
+    // Exit early if the positive shape was completely missed or behind the ray.\n\
+    RayShapeIntersection intersection = getFirstIntersection(ix);\n\
+    if (intersection.entry.w == NO_HIT) {\n\
+        // Positive shape was completely missed - so exit early.\n\
+        return intersection;\n\
+    }\n\
+\n\
+    // Clipping planes\n\
+    #if defined(CLIPPING_PLANES)\n\
+        intersectClippingPlanes(ray, ix);\n\
+    #endif\n\
+\n\
+    // Depth\n\
+    intersectDepth(screenCoord, rayEC, ix);\n\
+\n\
+    // Find the first intersection that's in front of the ray\n\
+    #if (INTERSECTION_COUNT > 1)\n\
+        initializeIntersections(ix);\n\
+        for (int i = 0; i < INTERSECTION_COUNT; ++i) {\n\
+            intersection = nextIntersection(ix);\n\
+            if (intersection.exit.w > 0.0) {\n\
+                // Set start to 0.0 when ray is inside the shape.\n\
+                intersection.entry.w = max(intersection.entry.w, 0.0);\n\
+                break;\n\
+            }\n\
+        }\n\
+    #else\n\
+        // Set start to 0.0 when ray is inside the shape.\n\
+        intersection.entry.w = max(intersection.entry.w, 0.0);\n\
+    #endif\n\
+\n\
+    return intersection;\n\
+}\n\
+";