add corner fill

Plugins/ZShell/Blobs/blobshape.hpp

@@ -61,6 +61,10 @@ virtual bool isExcluded(const BlobShape* /*other*/) const {
 	return false;
 }
 
+virtual bool isCornerExcluded(const BlobShape* /*other*/) const {
+	return false;
+}
+
 virtual void cornerRadii(float out[4]) const;
 
 virtual void updatePhysics() {
@@ -72,9 +76,10 @@ void updateCenteredDeformMatrix();
 
 BlobGroup* m_group = nullptr;
 qreal m_radius = 0;
-QMatrix4x4 m_deformMatrix;
+QMatrix4x4 m_deformMatrix;     // identity by default
 QMatrix4x4 m_centeredDeformMatrix;
 
+// Cached data from updatePolish
 float m_cachedPaddedX = 0;
 float m_cachedPaddedY = 0;
 float m_cachedPaddedW = 0;
@@ -84,8 +89,6 @@ QVector<BlobRectData> m_cachedRects;
 int m_cachedMyIndex = -2;
 float m_pendingDx = 0;
 float m_pendingDy = 0;
-float m_pendingDw = 0;
-float m_pendingDh = 0;
 bool m_cachedHasInverted = false;
 float m_cachedInvertedRadius = 0;
 float m_cachedInvertedOuter[4] = {};