Cross Reference: /frameworks/base/libs/hwui/SpotShadow.cpp

Lines Matching refs:centroid
21 // centroid * (1 - FAKE_UMBRA_SIZE_RATIO) + outline * FAKE_UMBRA_SIZE_RATIO
85     // The angle to the vertex from the centroid.
452     // When centroid is covered by all circles from outline, then we consider
512         // Compute the umbra by the intersection from the outline's centroid!
526         // Connect a line b/t the outline vertex (V) and the centroid (C), it will
531         // When all of the outline circles cover the the outline centroid, (like I is
533         // a small area around the centroid as the umbra, and tune down the spot
584     // Umbra can be represented as a fan from the centroid, but visually umbra
794         const Vector2& centroid, Vector2* polyToCentroid) {
796         polyToCentroid[j] = poly2d[j] - centroid;
812 // For one umbra vertex, shoot an ray from centroid to it.
815 inline Vector2 getCloserVertex(const Vector2& umbraVertex, const Vector2& centroid,
818     Vector2 umbraToCentroid = umbraVertex - centroid;
829     float distanceToIntersectPoly = rayIntersectPoints(centroid, dx, dy,
838         closerVertex.x = centroid.x + dx * distanceToIntersectPoly;
839         closerVertex.y = centroid.y + dy * distanceToIntersectPoly;
853         const Vector2& centroid) {
862         // Make sure the centroid is inside the umbra, otherwise, fall back to the
864         if (testPointInsidePolygon(centroid, poly2d, polyLength)) {
971         bool isPositiveCross = genPolyToCentroid(poly2d, polyLength, centroid, polyToCentroid);
978             // Shoot a ray from centroid to each umbra vertices and pick the one with
979             // shorter distance to the centroid, b/t the umbra vertex or the intersection point.
980             Vector2 closerVertex = getCloserVertex(umbra[i], centroid, poly2d, polyLength,
991         // starting from the centroid to all umbra vertices.
993         AlphaVertex::set(&shadowVertices[vertexBufferIndex++], centroid.x,
994                 centroid.y, UMBRA_ALPHA);