2021-05-20 12:49:33 +02:00
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// Copyright 2009-2021 Intel Corporation
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2021-04-20 18:38:09 +02:00
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// SPDX-License-Identifier: Apache-2.0
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#pragma once
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#include "catmullclark_ring.h"
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#include "bezier_curve.h"
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namespace embree
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{
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template<typename Vertex, typename Vertex_t = Vertex>
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class __aligned(64) CatmullClarkPatchT
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{
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public:
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typedef CatmullClark1RingT<Vertex,Vertex_t> CatmullClark1Ring;
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typedef typename CatmullClark1Ring::Type Type;
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array_t<CatmullClark1RingT<Vertex,Vertex_t>,4> ring;
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public:
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__forceinline CatmullClarkPatchT () {}
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__forceinline CatmullClarkPatchT (const HalfEdge* first_half_edge, const char* vertices, size_t stride) {
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init(first_half_edge,vertices,stride);
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}
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__forceinline CatmullClarkPatchT (const HalfEdge* first_half_edge, const BufferView<Vec3fa>& vertices) {
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init(first_half_edge,vertices.getPtr(),vertices.getStride());
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}
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__forceinline void init (const HalfEdge* first_half_edge, const char* vertices, size_t stride)
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{
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for (unsigned i=0; i<4; i++)
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ring[i].init(first_half_edge+i,vertices,stride);
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assert(verify());
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}
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__forceinline size_t bytes() const {
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return ring[0].bytes()+ring[1].bytes()+ring[2].bytes()+ring[3].bytes();
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}
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__forceinline void serialize(void* ptr, size_t& ofs) const
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{
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for (size_t i=0; i<4; i++)
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ring[i].serialize((char*)ptr,ofs);
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}
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__forceinline void deserialize(void* ptr)
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{
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size_t ofs = 0;
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for (size_t i=0; i<4; i++)
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ring[i].deserialize((char*)ptr,ofs);
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}
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__forceinline BBox3fa bounds() const
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{
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BBox3fa bounds (ring[0].bounds());
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for (size_t i=1; i<4; i++)
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bounds.extend(ring[i].bounds());
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return bounds;
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}
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__forceinline Type type() const
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{
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const int ty0 = ring[0].type() ^ CatmullClark1Ring::TYPE_CREASES;
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const int ty1 = ring[1].type() ^ CatmullClark1Ring::TYPE_CREASES;
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const int ty2 = ring[2].type() ^ CatmullClark1Ring::TYPE_CREASES;
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const int ty3 = ring[3].type() ^ CatmullClark1Ring::TYPE_CREASES;
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return (Type) ((ty0 & ty1 & ty2 & ty3) ^ CatmullClark1Ring::TYPE_CREASES);
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}
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__forceinline bool isFinalResolution(float res) const {
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return ring[0].isFinalResolution(res) && ring[1].isFinalResolution(res) && ring[2].isFinalResolution(res) && ring[3].isFinalResolution(res);
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}
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static __forceinline void init_regular(const CatmullClark1RingT<Vertex,Vertex_t>& p0,
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const CatmullClark1RingT<Vertex,Vertex_t>& p1,
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CatmullClark1RingT<Vertex,Vertex_t>& dest0,
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CatmullClark1RingT<Vertex,Vertex_t>& dest1)
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{
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assert(p1.face_valence > 2);
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dest1.vertex_level = dest0.vertex_level = p0.edge_level;
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dest1.face_valence = dest0.face_valence = 4;
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dest1.edge_valence = dest0.edge_valence = 8;
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dest1.border_index = dest0.border_index = -1;
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dest1.vtx = dest0.vtx = (Vertex_t)p0.ring[0];
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dest1.vertex_crease_weight = dest0.vertex_crease_weight = 0.0f;
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dest1.ring[2] = dest0.ring[0] = (Vertex_t)p0.ring[1];
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dest1.ring[1] = dest0.ring[7] = (Vertex_t)p1.ring[0];
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dest1.ring[0] = dest0.ring[6] = (Vertex_t)p1.vtx;
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dest1.ring[7] = dest0.ring[5] = (Vertex_t)p1.ring[4];
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dest1.ring[6] = dest0.ring[4] = (Vertex_t)p0.ring[p0.edge_valence-1];
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dest1.ring[5] = dest0.ring[3] = (Vertex_t)p0.ring[p0.edge_valence-2];
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dest1.ring[4] = dest0.ring[2] = (Vertex_t)p0.vtx;
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dest1.ring[3] = dest0.ring[1] = (Vertex_t)p0.ring[2];
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dest1.crease_weight[1] = dest0.crease_weight[0] = 0.0f;
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dest1.crease_weight[0] = dest0.crease_weight[3] = p1.crease_weight[1];
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dest1.crease_weight[3] = dest0.crease_weight[2] = 0.0f;
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dest1.crease_weight[2] = dest0.crease_weight[1] = p0.crease_weight[0];
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if (p0.eval_unique_identifier <= p1.eval_unique_identifier)
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{
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dest0.eval_start_index = 3;
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dest1.eval_start_index = 0;
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dest0.eval_unique_identifier = p0.eval_unique_identifier;
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dest1.eval_unique_identifier = p0.eval_unique_identifier;
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}
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else
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{
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dest0.eval_start_index = 1;
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dest1.eval_start_index = 2;
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dest0.eval_unique_identifier = p1.eval_unique_identifier;
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dest1.eval_unique_identifier = p1.eval_unique_identifier;
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}
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}
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static __forceinline void init_border(const CatmullClark1RingT<Vertex,Vertex_t> &p0,
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const CatmullClark1RingT<Vertex,Vertex_t> &p1,
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CatmullClark1RingT<Vertex,Vertex_t> &dest0,
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CatmullClark1RingT<Vertex,Vertex_t> &dest1)
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{
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dest1.vertex_level = dest0.vertex_level = p0.edge_level;
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dest1.face_valence = dest0.face_valence = 3;
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dest1.edge_valence = dest0.edge_valence = 6;
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dest0.border_index = 2;
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dest1.border_index = 4;
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dest1.vtx = dest0.vtx = (Vertex_t)p0.ring[0];
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dest1.vertex_crease_weight = dest0.vertex_crease_weight = 0.0f;
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dest1.ring[2] = dest0.ring[0] = (Vertex_t)p0.ring[1];
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dest1.ring[1] = dest0.ring[5] = (Vertex_t)p1.ring[0];
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dest1.ring[0] = dest0.ring[4] = (Vertex_t)p1.vtx;
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dest1.ring[5] = dest0.ring[3] = (Vertex_t)p0.ring[p0.border_index+1]; // dummy
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dest1.ring[4] = dest0.ring[2] = (Vertex_t)p0.vtx;
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dest1.ring[3] = dest0.ring[1] = (Vertex_t)p0.ring[2];
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dest1.crease_weight[1] = dest0.crease_weight[0] = 0.0f;
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dest1.crease_weight[0] = dest0.crease_weight[2] = p1.crease_weight[1];
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dest1.crease_weight[2] = dest0.crease_weight[1] = p0.crease_weight[0];
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if (p0.eval_unique_identifier <= p1.eval_unique_identifier)
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{
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dest0.eval_start_index = 1;
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dest1.eval_start_index = 2;
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dest0.eval_unique_identifier = p0.eval_unique_identifier;
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dest1.eval_unique_identifier = p0.eval_unique_identifier;
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}
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else
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{
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dest0.eval_start_index = 2;
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dest1.eval_start_index = 0;
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dest0.eval_unique_identifier = p1.eval_unique_identifier;
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dest1.eval_unique_identifier = p1.eval_unique_identifier;
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}
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}
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static __forceinline void init_regular(const Vertex_t ¢er, const Vertex_t center_ring[8], const unsigned int offset, CatmullClark1RingT<Vertex,Vertex_t> &dest)
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{
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dest.vertex_level = 0.0f;
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dest.face_valence = 4;
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dest.edge_valence = 8;
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dest.border_index = -1;
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dest.vtx = (Vertex_t)center;
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dest.vertex_crease_weight = 0.0f;
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for (size_t i=0; i<8; i++)
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dest.ring[i] = (Vertex_t)center_ring[(offset+i)%8];
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for (size_t i=0; i<4; i++)
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dest.crease_weight[i] = 0.0f;
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dest.eval_start_index = (8-offset)>>1;
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if (dest.eval_start_index >= dest.face_valence) dest.eval_start_index -= dest.face_valence;
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assert( dest.eval_start_index < dest.face_valence );
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dest.eval_unique_identifier = 0;
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}
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__noinline void subdivide(array_t<CatmullClarkPatchT,4>& patch) const
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{
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ring[0].subdivide(patch[0].ring[0]);
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ring[1].subdivide(patch[1].ring[1]);
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ring[2].subdivide(patch[2].ring[2]);
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ring[3].subdivide(patch[3].ring[3]);
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patch[0].ring[0].edge_level = 0.5f*ring[0].edge_level;
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patch[0].ring[1].edge_level = 0.25f*(ring[1].edge_level+ring[3].edge_level);
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patch[0].ring[2].edge_level = 0.25f*(ring[0].edge_level+ring[2].edge_level);
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patch[0].ring[3].edge_level = 0.5f*ring[3].edge_level;
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patch[1].ring[0].edge_level = 0.5f*ring[0].edge_level;
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patch[1].ring[1].edge_level = 0.5f*ring[1].edge_level;
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patch[1].ring[2].edge_level = 0.25f*(ring[0].edge_level+ring[2].edge_level);
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patch[1].ring[3].edge_level = 0.25f*(ring[1].edge_level+ring[3].edge_level);
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patch[2].ring[0].edge_level = 0.25f*(ring[0].edge_level+ring[2].edge_level);
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patch[2].ring[1].edge_level = 0.5f*ring[1].edge_level;
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patch[2].ring[2].edge_level = 0.5f*ring[2].edge_level;
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patch[2].ring[3].edge_level = 0.25f*(ring[1].edge_level+ring[3].edge_level);
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patch[3].ring[0].edge_level = 0.25f*(ring[0].edge_level+ring[2].edge_level);
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patch[3].ring[1].edge_level = 0.25f*(ring[1].edge_level+ring[3].edge_level);
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patch[3].ring[2].edge_level = 0.5f*ring[2].edge_level;
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patch[3].ring[3].edge_level = 0.5f*ring[3].edge_level;
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const bool regular0 = ring[0].has_last_face() && ring[1].face_valence > 2;
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if (likely(regular0))
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init_regular(patch[0].ring[0],patch[1].ring[1],patch[0].ring[1],patch[1].ring[0]);
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else
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init_border(patch[0].ring[0],patch[1].ring[1],patch[0].ring[1],patch[1].ring[0]);
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const bool regular1 = ring[1].has_last_face() && ring[2].face_valence > 2;
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if (likely(regular1))
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init_regular(patch[1].ring[1],patch[2].ring[2],patch[1].ring[2],patch[2].ring[1]);
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else
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init_border(patch[1].ring[1],patch[2].ring[2],patch[1].ring[2],patch[2].ring[1]);
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const bool regular2 = ring[2].has_last_face() && ring[3].face_valence > 2;
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if (likely(regular2))
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init_regular(patch[2].ring[2],patch[3].ring[3],patch[2].ring[3],patch[3].ring[2]);
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else
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init_border(patch[2].ring[2],patch[3].ring[3],patch[2].ring[3],patch[3].ring[2]);
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const bool regular3 = ring[3].has_last_face() && ring[0].face_valence > 2;
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if (likely(regular3))
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init_regular(patch[3].ring[3],patch[0].ring[0],patch[3].ring[0],patch[0].ring[3]);
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else
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init_border(patch[3].ring[3],patch[0].ring[0],patch[3].ring[0],patch[0].ring[3]);
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Vertex_t center = (ring[0].vtx + ring[1].vtx + ring[2].vtx + ring[3].vtx) * 0.25f;
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Vertex_t center_ring[8];
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center_ring[0] = (Vertex_t)patch[3].ring[3].ring[0];
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center_ring[7] = (Vertex_t)patch[3].ring[3].vtx;
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center_ring[6] = (Vertex_t)patch[2].ring[2].ring[0];
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center_ring[5] = (Vertex_t)patch[2].ring[2].vtx;
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center_ring[4] = (Vertex_t)patch[1].ring[1].ring[0];
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center_ring[3] = (Vertex_t)patch[1].ring[1].vtx;
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center_ring[2] = (Vertex_t)patch[0].ring[0].ring[0];
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center_ring[1] = (Vertex_t)patch[0].ring[0].vtx;
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init_regular(center,center_ring,0,patch[0].ring[2]);
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init_regular(center,center_ring,2,patch[1].ring[3]);
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init_regular(center,center_ring,4,patch[2].ring[0]);
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init_regular(center,center_ring,6,patch[3].ring[1]);
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assert(patch[0].verify());
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assert(patch[1].verify());
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assert(patch[2].verify());
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assert(patch[3].verify());
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}
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bool verify() const {
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return ring[0].hasValidPositions() && ring[1].hasValidPositions() && ring[2].hasValidPositions() && ring[3].hasValidPositions();
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}
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__forceinline void init( FinalQuad& quad ) const
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{
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quad.vtx[0] = (Vertex_t)ring[0].vtx;
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quad.vtx[1] = (Vertex_t)ring[1].vtx;
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quad.vtx[2] = (Vertex_t)ring[2].vtx;
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quad.vtx[3] = (Vertex_t)ring[3].vtx;
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};
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friend __forceinline embree_ostream operator<<(embree_ostream o, const CatmullClarkPatchT &p)
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{
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o << "CatmullClarkPatch { " << embree_endl;
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for (size_t i=0; i<4; i++)
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o << "ring" << i << ": " << p.ring[i] << embree_endl;
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o << "}" << embree_endl;
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return o;
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}
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};
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typedef CatmullClarkPatchT<Vec3fa,Vec3fa_t> CatmullClarkPatch3fa;
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template<typename Vertex, typename Vertex_t = Vertex>
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class __aligned(64) GeneralCatmullClarkPatchT
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{
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public:
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typedef CatmullClarkPatchT<Vertex,Vertex_t> CatmullClarkPatch;
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typedef CatmullClark1RingT<Vertex,Vertex_t> CatmullClark1Ring;
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typedef BezierCurveT<Vertex> BezierCurve;
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static const unsigned SIZE = MAX_PATCH_VALENCE;
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DynamicStackArray<GeneralCatmullClark1RingT<Vertex,Vertex_t>,8,SIZE> ring;
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unsigned N;
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__forceinline GeneralCatmullClarkPatchT ()
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: N(0) {}
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GeneralCatmullClarkPatchT (const HalfEdge* h, const char* vertices, size_t stride) {
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init(h,vertices,stride);
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}
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__forceinline GeneralCatmullClarkPatchT (const HalfEdge* first_half_edge, const BufferView<Vec3fa>& vertices) {
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init(first_half_edge,vertices.getPtr(),vertices.getStride());
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}
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__forceinline void init (const HalfEdge* h, const char* vertices, size_t stride)
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{
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unsigned int i = 0;
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const HalfEdge* edge = h;
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do {
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ring[i].init(edge,vertices,stride);
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edge = edge->next();
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i++;
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} while ((edge != h) && (i < SIZE));
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N = i;
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}
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__forceinline unsigned size() const {
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return N;
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}
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__forceinline bool isQuadPatch() const {
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return (N == 4) && ring[0].only_quads && ring[1].only_quads && ring[2].only_quads && ring[3].only_quads;
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}
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static __forceinline void init_regular(const CatmullClark1RingT<Vertex,Vertex_t>& p0,
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const CatmullClark1RingT<Vertex,Vertex_t>& p1,
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CatmullClark1RingT<Vertex,Vertex_t>& dest0,
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CatmullClark1RingT<Vertex,Vertex_t>& dest1)
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{
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assert(p1.face_valence > 2);
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dest1.vertex_level = dest0.vertex_level = p0.edge_level;
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dest1.face_valence = dest0.face_valence = 4;
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dest1.edge_valence = dest0.edge_valence = 8;
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dest1.border_index = dest0.border_index = -1;
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dest1.vtx = dest0.vtx = (Vertex_t)p0.ring[0];
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dest1.vertex_crease_weight = dest0.vertex_crease_weight = 0.0f;
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dest1.ring[2] = dest0.ring[0] = (Vertex_t)p0.ring[1];
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dest1.ring[1] = dest0.ring[7] = (Vertex_t)p1.ring[0];
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dest1.ring[0] = dest0.ring[6] = (Vertex_t)p1.vtx;
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dest1.ring[7] = dest0.ring[5] = (Vertex_t)p1.ring[4];
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dest1.ring[6] = dest0.ring[4] = (Vertex_t)p0.ring[p0.edge_valence-1];
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dest1.ring[5] = dest0.ring[3] = (Vertex_t)p0.ring[p0.edge_valence-2];
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dest1.ring[4] = dest0.ring[2] = (Vertex_t)p0.vtx;
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dest1.ring[3] = dest0.ring[1] = (Vertex_t)p0.ring[2];
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dest1.crease_weight[1] = dest0.crease_weight[0] = 0.0f;
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dest1.crease_weight[0] = dest0.crease_weight[3] = p1.crease_weight[1];
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dest1.crease_weight[3] = dest0.crease_weight[2] = 0.0f;
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dest1.crease_weight[2] = dest0.crease_weight[1] = p0.crease_weight[0];
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if (p0.eval_unique_identifier <= p1.eval_unique_identifier)
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{
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dest0.eval_start_index = 3;
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dest1.eval_start_index = 0;
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dest0.eval_unique_identifier = p0.eval_unique_identifier;
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dest1.eval_unique_identifier = p0.eval_unique_identifier;
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}
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else
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{
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dest0.eval_start_index = 1;
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dest1.eval_start_index = 2;
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dest0.eval_unique_identifier = p1.eval_unique_identifier;
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|
dest1.eval_unique_identifier = p1.eval_unique_identifier;
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|
}
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|
}
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static __forceinline void init_border(const CatmullClark1RingT<Vertex,Vertex_t> &p0,
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|
|
|
const CatmullClark1RingT<Vertex,Vertex_t> &p1,
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|
CatmullClark1RingT<Vertex,Vertex_t> &dest0,
|
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|
CatmullClark1RingT<Vertex,Vertex_t> &dest1)
|
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|
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|
{
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|
dest1.vertex_level = dest0.vertex_level = p0.edge_level;
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|
dest1.face_valence = dest0.face_valence = 3;
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|
dest1.edge_valence = dest0.edge_valence = 6;
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|
dest0.border_index = 2;
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|
dest1.border_index = 4;
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|
dest1.vtx = dest0.vtx = (Vertex_t)p0.ring[0];
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dest1.vertex_crease_weight = dest0.vertex_crease_weight = 0.0f;
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dest1.ring[2] = dest0.ring[0] = (Vertex_t)p0.ring[1];
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dest1.ring[1] = dest0.ring[5] = (Vertex_t)p1.ring[0];
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dest1.ring[0] = dest0.ring[4] = (Vertex_t)p1.vtx;
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dest1.ring[5] = dest0.ring[3] = (Vertex_t)p0.ring[p0.border_index+1]; // dummy
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|
dest1.ring[4] = dest0.ring[2] = (Vertex_t)p0.vtx;
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|
dest1.ring[3] = dest0.ring[1] = (Vertex_t)p0.ring[2];
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dest1.crease_weight[1] = dest0.crease_weight[0] = 0.0f;
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|
dest1.crease_weight[0] = dest0.crease_weight[2] = p1.crease_weight[1];
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|
dest1.crease_weight[2] = dest0.crease_weight[1] = p0.crease_weight[0];
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|
|
|
|
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|
|
|
if (p0.eval_unique_identifier <= p1.eval_unique_identifier)
|
|
|
|
|
{
|
|
|
|
|
dest0.eval_start_index = 1;
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|
|
dest1.eval_start_index = 2;
|
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|
dest0.eval_unique_identifier = p0.eval_unique_identifier;
|
|
|
|
|
dest1.eval_unique_identifier = p0.eval_unique_identifier;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
dest0.eval_start_index = 2;
|
|
|
|
|
dest1.eval_start_index = 0;
|
|
|
|
|
dest0.eval_unique_identifier = p1.eval_unique_identifier;
|
|
|
|
|
dest1.eval_unique_identifier = p1.eval_unique_identifier;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static __forceinline void init_regular(const Vertex_t ¢er, const array_t<Vertex_t,2*SIZE>& center_ring, const float vertex_level, const unsigned int N, const unsigned int offset, CatmullClark1RingT<Vertex,Vertex_t> &dest)
|
|
|
|
|
{
|
|
|
|
|
assert(N<(MAX_RING_FACE_VALENCE));
|
|
|
|
|
assert(2*N<(MAX_RING_EDGE_VALENCE));
|
|
|
|
|
dest.vertex_level = vertex_level;
|
|
|
|
|
dest.face_valence = N;
|
|
|
|
|
dest.edge_valence = 2*N;
|
|
|
|
|
dest.border_index = -1;
|
|
|
|
|
dest.vtx = (Vertex_t)center;
|
|
|
|
|
dest.vertex_crease_weight = 0.0f;
|
|
|
|
|
for (unsigned i=0; i<2*N; i++) {
|
|
|
|
|
dest.ring[i] = (Vertex_t)center_ring[(2*N+offset+i-1)%(2*N)];
|
|
|
|
|
assert(isvalid(dest.ring[i]));
|
|
|
|
|
}
|
|
|
|
|
for (unsigned i=0; i<N; i++)
|
|
|
|
|
dest.crease_weight[i] = 0.0f;
|
|
|
|
|
|
|
|
|
|
assert(offset <= 2*N);
|
|
|
|
|
dest.eval_start_index = (2*N-offset)>>1;
|
|
|
|
|
if (dest.eval_start_index >= dest.face_valence) dest.eval_start_index -= dest.face_valence;
|
|
|
|
|
|
|
|
|
|
assert( dest.eval_start_index < dest.face_valence );
|
|
|
|
|
dest.eval_unique_identifier = 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
__noinline void subdivide(array_t<CatmullClarkPatch,SIZE>& patch, unsigned& N_o) const
|
|
|
|
|
{
|
|
|
|
|
N_o = N;
|
|
|
|
|
assert( N );
|
|
|
|
|
for (unsigned i=0; i<N; i++) {
|
|
|
|
|
unsigned ip1 = (i+1)%N; // FIXME: %
|
|
|
|
|
ring[i].subdivide(patch[i].ring[0]);
|
|
|
|
|
patch[i] .ring[0].edge_level = 0.5f*ring[i].edge_level;
|
|
|
|
|
patch[ip1].ring[3].edge_level = 0.5f*ring[i].edge_level;
|
|
|
|
|
|
|
|
|
|
assert( patch[i].ring[0].hasValidPositions() );
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
assert(N < 2*SIZE);
|
|
|
|
|
Vertex_t center = Vertex_t(0.0f);
|
|
|
|
|
array_t<Vertex_t,2*SIZE> center_ring;
|
|
|
|
|
float center_vertex_level = 2.0f; // guarantees that irregular vertices get always isolated also for non-quads
|
|
|
|
|
|
|
|
|
|
for (unsigned i=0; i<N; i++)
|
|
|
|
|
{
|
|
|
|
|
unsigned ip1 = (i+1)%N; // FIXME: %
|
|
|
|
|
unsigned im1 = (i+N-1)%N; // FIXME: %
|
|
|
|
|
bool regular = ring[i].has_last_face() && ring[ip1].face_valence > 2;
|
|
|
|
|
if (likely(regular)) init_regular(patch[i].ring[0],patch[ip1].ring[0],patch[i].ring[1],patch[ip1].ring[3]);
|
|
|
|
|
else init_border (patch[i].ring[0],patch[ip1].ring[0],patch[i].ring[1],patch[ip1].ring[3]);
|
|
|
|
|
|
|
|
|
|
assert( patch[i].ring[1].hasValidPositions() );
|
|
|
|
|
assert( patch[ip1].ring[3].hasValidPositions() );
|
|
|
|
|
|
|
|
|
|
float level = 0.25f*(ring[im1].edge_level+ring[ip1].edge_level);
|
|
|
|
|
patch[i].ring[1].edge_level = patch[ip1].ring[2].edge_level = level;
|
|
|
|
|
center_vertex_level = max(center_vertex_level,level);
|
|
|
|
|
|
|
|
|
|
center += ring[i].vtx;
|
|
|
|
|
center_ring[2*i+0] = (Vertex_t)patch[i].ring[0].vtx;
|
|
|
|
|
center_ring[2*i+1] = (Vertex_t)patch[i].ring[0].ring[0];
|
|
|
|
|
}
|
|
|
|
|
center /= float(N);
|
|
|
|
|
|
|
|
|
|
for (unsigned int i=0; i<N; i++) {
|
|
|
|
|
init_regular(center,center_ring,center_vertex_level,N,2*i,patch[i].ring[2]);
|
|
|
|
|
|
|
|
|
|
assert( patch[i].ring[2].hasValidPositions() );
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void init(CatmullClarkPatch& patch) const
|
|
|
|
|
{
|
|
|
|
|
assert(size() == 4);
|
|
|
|
|
ring[0].convert(patch.ring[0]);
|
|
|
|
|
ring[1].convert(patch.ring[1]);
|
|
|
|
|
ring[2].convert(patch.ring[2]);
|
|
|
|
|
ring[3].convert(patch.ring[3]);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void fix_quad_ring_order (array_t<CatmullClarkPatch,GeneralCatmullClarkPatchT::SIZE>& patches)
|
|
|
|
|
{
|
|
|
|
|
CatmullClark1Ring patches1ring1 = patches[1].ring[1];
|
|
|
|
|
patches[1].ring[1] = patches[1].ring[0]; // FIXME: optimize these assignments
|
|
|
|
|
patches[1].ring[0] = patches[1].ring[3];
|
|
|
|
|
patches[1].ring[3] = patches[1].ring[2];
|
|
|
|
|
patches[1].ring[2] = patches1ring1;
|
|
|
|
|
|
|
|
|
|
CatmullClark1Ring patches2ring2 = patches[2].ring[2];
|
|
|
|
|
patches[2].ring[2] = patches[2].ring[0];
|
|
|
|
|
patches[2].ring[0] = patches2ring2;
|
|
|
|
|
CatmullClark1Ring patches2ring3 = patches[2].ring[3];
|
|
|
|
|
patches[2].ring[3] = patches[2].ring[1];
|
|
|
|
|
patches[2].ring[1] = patches2ring3;
|
|
|
|
|
|
|
|
|
|
CatmullClark1Ring patches3ring3 = patches[3].ring[3];
|
|
|
|
|
patches[3].ring[3] = patches[3].ring[0];
|
|
|
|
|
patches[3].ring[0] = patches[3].ring[1];
|
|
|
|
|
patches[3].ring[1] = patches[3].ring[2];
|
|
|
|
|
patches[3].ring[2] = patches3ring3;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
__forceinline void getLimitBorder(BezierCurve curves[GeneralCatmullClarkPatchT::SIZE]) const
|
|
|
|
|
{
|
|
|
|
|
Vertex P0 = ring[0].getLimitVertex();
|
|
|
|
|
for (unsigned i=0; i<N; i++)
|
|
|
|
|
{
|
|
|
|
|
const unsigned i0 = i, i1 = i+1==N ? 0 : i+1;
|
|
|
|
|
const Vertex P1 = madd(1.0f/3.0f,ring[i0].getLimitTangent(),P0);
|
|
|
|
|
const Vertex P3 = ring[i1].getLimitVertex();
|
|
|
|
|
const Vertex P2 = madd(1.0f/3.0f,ring[i1].getSecondLimitTangent(),P3);
|
|
|
|
|
new (&curves[i]) BezierCurve(P0,P1,P2,P3);
|
|
|
|
|
P0 = P3;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
__forceinline void getLimitBorder(BezierCurve curves[2], const unsigned subPatch) const
|
|
|
|
|
{
|
|
|
|
|
const unsigned i0 = subPatch;
|
|
|
|
|
const Vertex t0_p = ring[i0].getLimitTangent();
|
|
|
|
|
const Vertex t0_m = ring[i0].getSecondLimitTangent();
|
|
|
|
|
|
|
|
|
|
const unsigned i1 = subPatch+1 == N ? 0 : subPatch+1;
|
|
|
|
|
const Vertex t1_p = ring[i1].getLimitTangent();
|
|
|
|
|
const Vertex t1_m = ring[i1].getSecondLimitTangent();
|
|
|
|
|
|
|
|
|
|
const unsigned i2 = subPatch == 0 ? N-1 : subPatch-1;
|
|
|
|
|
const Vertex t2_p = ring[i2].getLimitTangent();
|
|
|
|
|
const Vertex t2_m = ring[i2].getSecondLimitTangent();
|
|
|
|
|
|
|
|
|
|
const Vertex b00 = ring[i0].getLimitVertex();
|
|
|
|
|
const Vertex b03 = ring[i1].getLimitVertex();
|
|
|
|
|
const Vertex b33 = ring[i2].getLimitVertex();
|
|
|
|
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const Vertex b01 = madd(1.0/3.0f,t0_p,b00);
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const Vertex b11 = madd(1.0/3.0f,t0_m,b00);
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//const Vertex b13 = madd(1.0/3.0f,t1_p,b03);
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const Vertex b02 = madd(1.0/3.0f,t1_m,b03);
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const Vertex b22 = madd(1.0/3.0f,t2_p,b33);
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const Vertex b23 = madd(1.0/3.0f,t2_m,b33);
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new (&curves[0]) BezierCurve(b00,b01,b02,b03);
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new (&curves[1]) BezierCurve(b33,b22,b11,b00);
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}
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friend __forceinline embree_ostream operator<<(embree_ostream o, const GeneralCatmullClarkPatchT &p)
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{
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o << "GeneralCatmullClarkPatch { " << embree_endl;
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for (unsigned i=0; i<p.N; i++)
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o << "ring" << i << ": " << p.ring[i] << embree_endl;
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o << "}" << embree_endl;
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return o;
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}
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};
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typedef GeneralCatmullClarkPatchT<Vec3fa,Vec3fa_t> GeneralCatmullClarkPatch3fa;
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}
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