Add Chromium-only Blender WebEngine parity work

blender-5.2.0/extern/opensubdiv-source/opensubdiv/hbr/creaseEdit.h

@@ -0,0 +1,83 @@
+//
+//   Copyright 2013 Pixar
+//
+//   Licensed under the terms set forth in the LICENSE.txt file available at
+//   https://opensubdiv.org/license.
+//
+
+#ifndef OPENSUBDIV3_HBRCREASEEDIT_H
+#define OPENSUBDIV3_HBRCREASEEDIT_H
+
+#include "../version.h"
+
+namespace OpenSubdiv {
+namespace OPENSUBDIV_VERSION {
+
+template <class T> class HbrCreaseEdit;
+
+template <class T>
+std::ostream& operator<<(std::ostream& out, const HbrCreaseEdit<T>& path) {
+    out << "edge path = (" << path.faceid << ' ';
+    for (int i = 0; i < path.nsubfaces; ++i) {
+        out << static_cast<int>(path.subfaces[i]) << ' ';
+    }
+    return out << static_cast<int>(path.edgeid) << "), sharpness = " << path.sharpness;
+}
+
+template <class T>
+class HbrCreaseEdit : public HbrHierarchicalEdit<T> {
+
+public:
+
+    HbrCreaseEdit(int _faceid, int _nsubfaces, unsigned char *_subfaces, unsigned char _edgeid, typename HbrHierarchicalEdit<T>::Operation _op, float _sharpness)
+        : HbrHierarchicalEdit<T>(_faceid, _nsubfaces, _subfaces), edgeid(_edgeid), op(_op), sharpness(_sharpness) {
+    }
+
+    HbrCreaseEdit(int _faceid, int _nsubfaces, int *_subfaces, int _edgeid, typename HbrHierarchicalEdit<T>::Operation _op, float _sharpness)
+        : HbrHierarchicalEdit<T>(_faceid, _nsubfaces, _subfaces), edgeid(static_cast<unsigned char>(_edgeid)), op(_op), sharpness(_sharpness) {
+    }
+
+    virtual ~HbrCreaseEdit() {}
+
+    friend std::ostream& operator<< <T> (std::ostream& out, const HbrCreaseEdit<T>& path);
+
+    virtual void ApplyEditToFace(HbrFace<T>* face) {
+        if (HbrHierarchicalEdit<T>::GetNSubfaces() == face->GetDepth()) {
+            // Modify edge sharpness
+            float sharp=0.0f;
+            if (op == HbrHierarchicalEdit<T>::Set) {
+                sharp = sharpness;
+            } else if (op == HbrHierarchicalEdit<T>::Add) {
+                sharp = face->GetEdge(edgeid)->GetSharpness() + sharpness;
+            } else if (op == HbrHierarchicalEdit<T>::Subtract) {
+                sharp = face->GetEdge(edgeid)->GetSharpness() - sharpness;
+            }
+            if (sharp < HbrHalfedge<T>::k_Smooth)
+                sharp = HbrHalfedge<T>::k_Smooth;
+            if (sharp > HbrHalfedge<T>::k_InfinitelySharp)
+                sharp = HbrHalfedge<T>::k_InfinitelySharp;
+            // We have to make sure the neighbor of the edge exists at
+            // this point. Otherwise, if it comes into being late, it
+            // will clobber the overriden sharpness and we will lose
+            // the edit.
+            face->GetEdge(edgeid)->GuaranteeNeighbor();
+            face->GetEdge(edgeid)->SetSharpness(sharp);
+        }
+    }
+
+private:
+    // ID of the edge (you can think of this also as the id of the
+    // origin vertex of the two-vertex length edge)
+    const unsigned char edgeid;
+    typename HbrHierarchicalEdit<T>::Operation op;
+    // sharpness of the edge edit
+    const float sharpness;
+};
+
+
+} // end namespace OPENSUBDIV_VERSION
+using namespace OPENSUBDIV_VERSION;
+
+} // end namespace OpenSubdiv
+
+#endif /* OPENSUBDIV3_HBRCREASEEDIT_H */