75 lines
3.5 KiB
C++
Executable File
75 lines
3.5 KiB
C++
Executable File
// ======================================================================== //
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// Copyright 2009-2014 Intel Corporation //
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// //
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// Licensed under the Apache License, Version 2.0 (the "License"); //
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// you may not use this file except in compliance with the License. //
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// You may obtain a copy of the License at //
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// //
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// http://www.apache.org/licenses/LICENSE-2.0 //
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// //
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// Unless required by applicable law or agreed to in writing, software //
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// distributed under the License is distributed on an "AS IS" BASIS, //
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. //
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// See the License for the specific language governing permissions and //
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// limitations under the License. //
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// ======================================================================== //
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#include "instance_intersector1.h"
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namespace embree
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{
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namespace isa
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{
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void InstanceBoundsFunction(const Instance* instance, size_t item, BBox3fa& bounds_o)
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{
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Vec3fa lower = instance->object->bounds.lower;
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Vec3fa upper = instance->object->bounds.upper;
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AffineSpace3fa local2world = instance->local2world;
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Vec3fa p000 = xfmPoint(local2world,Vec3fa(lower.x,lower.y,lower.z));
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Vec3fa p001 = xfmPoint(local2world,Vec3fa(lower.x,lower.y,upper.z));
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Vec3fa p010 = xfmPoint(local2world,Vec3fa(lower.x,upper.y,lower.z));
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Vec3fa p011 = xfmPoint(local2world,Vec3fa(lower.x,upper.y,upper.z));
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Vec3fa p100 = xfmPoint(local2world,Vec3fa(upper.x,lower.y,lower.z));
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Vec3fa p101 = xfmPoint(local2world,Vec3fa(upper.x,lower.y,upper.z));
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Vec3fa p110 = xfmPoint(local2world,Vec3fa(upper.x,upper.y,lower.z));
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Vec3fa p111 = xfmPoint(local2world,Vec3fa(upper.x,upper.y,upper.z));
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bounds_o.lower = min(min(min(p000,p001),min(p010,p011)),min(min(p100,p101),min(p110,p111)));
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bounds_o.upper = max(max(max(p000,p001),max(p010,p011)),max(max(p100,p101),max(p110,p111)));
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}
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RTCBoundsFunc InstanceBoundsFunc = (RTCBoundsFunc) InstanceBoundsFunction;
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void FastInstanceIntersector1::intersect(const Instance* instance, Ray& ray, size_t item)
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{
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const Vec3fa ray_org = ray.org;
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const Vec3fa ray_dir = ray.dir;
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const int ray_geomID = ray.geomID;
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const int ray_instID = ray.instID;
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ray.org = xfmPoint (instance->world2local,ray_org);
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ray.dir = xfmVector(instance->world2local,ray_dir);
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ray.geomID = -1;
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ray.instID = instance->id;
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instance->object->intersect((RTCRay&)ray);
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ray.org = ray_org;
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ray.dir = ray_dir;
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if (ray.geomID == -1) {
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ray.geomID = ray_geomID;
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ray.instID = ray_instID;
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}
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}
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void FastInstanceIntersector1::occluded (const Instance* instance, Ray& ray, size_t item)
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{
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const Vec3fa ray_org = ray.org;
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const Vec3fa ray_dir = ray.dir;
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ray.org = xfmPoint (instance->world2local,ray_org);
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ray.dir = xfmVector(instance->world2local,ray_dir);
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instance->object->occluded((RTCRay&)ray);
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ray.org = ray_org;
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ray.dir = ray_dir;
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}
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DEFINE_SET_INTERSECTOR1(InstanceIntersector1,FastInstanceIntersector1);
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}
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}
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