307 lines
11 KiB
C++
307 lines
11 KiB
C++
// Copyright 2009-2020 Intel Corporation
|
|
// SPDX-License-Identifier: Apache-2.0
|
|
|
|
#pragma once
|
|
|
|
#include "default.h"
|
|
#include "geometry.h"
|
|
#include "buffer.h"
|
|
|
|
namespace embree
|
|
{
|
|
/*! represents an array of line segments */
|
|
struct LineSegments : public Geometry
|
|
{
|
|
/*! type of this geometry */
|
|
static const Geometry::GTypeMask geom_type = Geometry::MTY_CURVE2;
|
|
|
|
public:
|
|
|
|
/*! line segments construction */
|
|
LineSegments (Device* device, Geometry::GType gtype);
|
|
|
|
public:
|
|
void setMask (unsigned mask);
|
|
void setNumTimeSteps (unsigned int numTimeSteps);
|
|
void setVertexAttributeCount (unsigned int N);
|
|
void setBuffer(RTCBufferType type, unsigned int slot, RTCFormat format, const Ref<Buffer>& buffer, size_t offset, size_t stride, unsigned int num);
|
|
void* getBuffer(RTCBufferType type, unsigned int slot);
|
|
void updateBuffer(RTCBufferType type, unsigned int slot);
|
|
void commit();
|
|
bool verify ();
|
|
void interpolate(const RTCInterpolateArguments* const args);
|
|
void setTessellationRate(float N);
|
|
void setMaxRadiusScale(float s);
|
|
void addElementsToCount (GeometryCounts & counts) const;
|
|
|
|
public:
|
|
|
|
/*! returns the number of vertices */
|
|
__forceinline size_t numVertices() const {
|
|
return vertices[0].size();
|
|
}
|
|
|
|
/*! returns the i'th segment */
|
|
__forceinline const unsigned int& segment(size_t i) const {
|
|
return segments[i];
|
|
}
|
|
|
|
/*! returns the segment to the left of the i'th segment */
|
|
__forceinline bool segmentLeftExists(size_t i) const {
|
|
assert (flags);
|
|
return (flags[i] & RTC_CURVE_FLAG_NEIGHBOR_LEFT) != 0;
|
|
}
|
|
|
|
/*! returns the segment to the right of the i'th segment */
|
|
__forceinline bool segmentRightExists(size_t i) const {
|
|
assert (flags);
|
|
return (flags[i] & RTC_CURVE_FLAG_NEIGHBOR_RIGHT) != 0;
|
|
}
|
|
|
|
/*! returns i'th vertex of the first time step */
|
|
__forceinline Vec3ff vertex(size_t i) const {
|
|
return vertices0[i];
|
|
}
|
|
|
|
/*! returns i'th vertex of the first time step */
|
|
__forceinline const char* vertexPtr(size_t i) const {
|
|
return vertices0.getPtr(i);
|
|
}
|
|
|
|
/*! returns i'th normal of the first time step */
|
|
__forceinline Vec3fa normal(size_t i) const {
|
|
return normals0[i];
|
|
}
|
|
|
|
/*! returns i'th radius of the first time step */
|
|
__forceinline float radius(size_t i) const {
|
|
return vertices0[i].w;
|
|
}
|
|
|
|
/*! returns i'th vertex of itime'th timestep */
|
|
__forceinline Vec3ff vertex(size_t i, size_t itime) const {
|
|
return vertices[itime][i];
|
|
}
|
|
|
|
/*! returns i'th vertex of itime'th timestep */
|
|
__forceinline const char* vertexPtr(size_t i, size_t itime) const {
|
|
return vertices[itime].getPtr(i);
|
|
}
|
|
|
|
/*! returns i'th normal of itime'th timestep */
|
|
__forceinline Vec3fa normal(size_t i, size_t itime) const {
|
|
return normals[itime][i];
|
|
}
|
|
|
|
/*! returns i'th radius of itime'th timestep */
|
|
__forceinline float radius(size_t i, size_t itime) const {
|
|
return vertices[itime][i].w;
|
|
}
|
|
|
|
/*! calculates bounding box of i'th line segment */
|
|
__forceinline BBox3fa bounds(const Vec3ff& v0, const Vec3ff& v1) const
|
|
{
|
|
const BBox3ff b = merge(BBox3ff(v0),BBox3ff(v1));
|
|
return enlarge((BBox3fa)b,maxRadiusScale*Vec3fa(max(v0.w,v1.w)));
|
|
}
|
|
|
|
/*! calculates bounding box of i'th line segment */
|
|
__forceinline BBox3fa bounds(size_t i) const
|
|
{
|
|
const unsigned int index = segment(i);
|
|
const Vec3ff v0 = vertex(index+0);
|
|
const Vec3ff v1 = vertex(index+1);
|
|
return bounds(v0,v1);
|
|
}
|
|
|
|
/*! calculates bounding box of i'th line segment for the itime'th time step */
|
|
__forceinline BBox3fa bounds(size_t i, size_t itime) const
|
|
{
|
|
const unsigned int index = segment(i);
|
|
const Vec3ff v0 = vertex(index+0,itime);
|
|
const Vec3ff v1 = vertex(index+1,itime);
|
|
return bounds(v0,v1);
|
|
}
|
|
|
|
/*! calculates bounding box of i'th line segment */
|
|
__forceinline BBox3fa bounds(const LinearSpace3fa& space, size_t i) const
|
|
{
|
|
const unsigned int index = segment(i);
|
|
const Vec3ff v0 = vertex(index+0);
|
|
const Vec3ff v1 = vertex(index+1);
|
|
const Vec3ff w0(xfmVector(space,(Vec3fa)v0),v0.w);
|
|
const Vec3ff w1(xfmVector(space,(Vec3fa)v1),v1.w);
|
|
return bounds(w0,w1);
|
|
}
|
|
|
|
/*! calculates bounding box of i'th line segment for the itime'th time step */
|
|
__forceinline BBox3fa bounds(const LinearSpace3fa& space, size_t i, size_t itime) const
|
|
{
|
|
const unsigned int index = segment(i);
|
|
const Vec3ff v0 = vertex(index+0,itime);
|
|
const Vec3ff v1 = vertex(index+1,itime);
|
|
const Vec3ff w0(xfmVector(space,(Vec3fa)v0),v0.w);
|
|
const Vec3ff w1(xfmVector(space,(Vec3fa)v1),v1.w);
|
|
return bounds(w0,w1);
|
|
}
|
|
|
|
/*! check if the i'th primitive is valid at the itime'th timestep */
|
|
__forceinline bool valid(size_t i, size_t itime) const {
|
|
return valid(i, make_range(itime, itime));
|
|
}
|
|
|
|
/*! check if the i'th primitive is valid between the specified time range */
|
|
__forceinline bool valid(size_t i, const range<size_t>& itime_range) const
|
|
{
|
|
const unsigned int index = segment(i);
|
|
if (index+1 >= numVertices()) return false;
|
|
|
|
for (size_t itime = itime_range.begin(); itime <= itime_range.end(); itime++)
|
|
{
|
|
const Vec3ff v0 = vertex(index+0,itime); if (unlikely(!isvalid4(v0))) return false;
|
|
const Vec3ff v1 = vertex(index+1,itime); if (unlikely(!isvalid4(v1))) return false;
|
|
if (min(v0.w,v1.w) < 0.0f) return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/*! calculates the linear bounds of the i'th primitive at the itimeGlobal'th time segment */
|
|
__forceinline LBBox3fa linearBounds(size_t i, size_t itime) const {
|
|
return LBBox3fa(bounds(i,itime+0),bounds(i,itime+1));
|
|
}
|
|
|
|
/*! calculates the build bounds of the i'th primitive, if it's valid */
|
|
__forceinline bool buildBounds(size_t i, BBox3fa* bbox) const
|
|
{
|
|
if (!valid(i,0)) return false;
|
|
*bbox = bounds(i);
|
|
return true;
|
|
}
|
|
|
|
/*! calculates the build bounds of the i'th primitive at the itime'th time segment, if it's valid */
|
|
__forceinline bool buildBounds(size_t i, size_t itime, BBox3fa& bbox) const
|
|
{
|
|
if (!valid(i,itime+0) || !valid(i,itime+1)) return false;
|
|
bbox = bounds(i,itime); // use bounds of first time step in builder
|
|
return true;
|
|
}
|
|
|
|
/*! calculates the linear bounds of the i'th primitive for the specified time range */
|
|
__forceinline LBBox3fa linearBounds(size_t primID, const BBox1f& dt) const {
|
|
return LBBox3fa([&] (size_t itime) { return bounds(primID, itime); }, dt, time_range, fnumTimeSegments);
|
|
}
|
|
|
|
/*! calculates the linear bounds of the i'th primitive for the specified time range */
|
|
__forceinline LBBox3fa linearBounds(const LinearSpace3fa& space, size_t primID, const BBox1f& dt) const {
|
|
return LBBox3fa([&] (size_t itime) { return bounds(space, primID, itime); }, dt, time_range, fnumTimeSegments);
|
|
}
|
|
|
|
/*! calculates the linear bounds of the i'th primitive for the specified time range */
|
|
__forceinline bool linearBounds(size_t i, const BBox1f& time_range, LBBox3fa& bbox) const
|
|
{
|
|
if (!valid(i, timeSegmentRange(time_range))) return false;
|
|
bbox = linearBounds(i, time_range);
|
|
return true;
|
|
}
|
|
|
|
/*! get fast access to first vertex buffer */
|
|
__forceinline float * getCompactVertexArray () const {
|
|
return (float*) vertices0.getPtr();
|
|
}
|
|
|
|
public:
|
|
BufferView<unsigned int> segments; //!< array of line segment indices
|
|
BufferView<Vec3ff> vertices0; //!< fast access to first vertex buffer
|
|
BufferView<Vec3fa> normals0; //!< fast access to first normal buffer
|
|
BufferView<char> flags; //!< start, end flag per segment
|
|
vector<BufferView<Vec3ff>> vertices; //!< vertex array for each timestep
|
|
vector<BufferView<Vec3fa>> normals; //!< normal array for each timestep
|
|
vector<BufferView<char>> vertexAttribs; //!< user buffers
|
|
int tessellationRate; //!< tessellation rate for bezier curve
|
|
float maxRadiusScale = 1.0; //!< maximal min-width scaling of curve radii
|
|
};
|
|
|
|
namespace isa
|
|
{
|
|
struct LineSegmentsISA : public LineSegments
|
|
{
|
|
LineSegmentsISA (Device* device, Geometry::GType gtype)
|
|
: LineSegments(device,gtype) {}
|
|
|
|
Vec3fa computeDirection(unsigned int primID) const
|
|
{
|
|
const unsigned vtxID = segment(primID);
|
|
const Vec3fa v0 = vertex(vtxID+0);
|
|
const Vec3fa v1 = vertex(vtxID+1);
|
|
return v1-v0;
|
|
}
|
|
|
|
Vec3fa computeDirection(unsigned int primID, size_t time) const
|
|
{
|
|
const unsigned vtxID = segment(primID);
|
|
const Vec3fa v0 = vertex(vtxID+0,time);
|
|
const Vec3fa v1 = vertex(vtxID+1,time);
|
|
return v1-v0;
|
|
}
|
|
|
|
PrimInfo createPrimRefArray(mvector<PrimRef>& prims, const range<size_t>& r, size_t k, unsigned int geomID) const
|
|
{
|
|
PrimInfo pinfo(empty);
|
|
for (size_t j=r.begin(); j<r.end(); j++)
|
|
{
|
|
BBox3fa bounds = empty;
|
|
if (!buildBounds(j,&bounds)) continue;
|
|
const PrimRef prim(bounds,geomID,unsigned(j));
|
|
pinfo.add_center2(prim);
|
|
prims[k++] = prim;
|
|
}
|
|
return pinfo;
|
|
}
|
|
|
|
PrimInfo createPrimRefArrayMB(mvector<PrimRef>& prims, size_t itime, const range<size_t>& r, size_t k, unsigned int geomID) const
|
|
{
|
|
PrimInfo pinfo(empty);
|
|
for (size_t j=r.begin(); j<r.end(); j++)
|
|
{
|
|
BBox3fa bounds = empty;
|
|
if (!buildBounds(j,itime,bounds)) continue;
|
|
const PrimRef prim(bounds,geomID,unsigned(j));
|
|
pinfo.add_center2(prim);
|
|
prims[k++] = prim;
|
|
}
|
|
return pinfo;
|
|
}
|
|
|
|
PrimInfoMB createPrimRefMBArray(mvector<PrimRefMB>& prims, const BBox1f& t0t1, const range<size_t>& r, size_t k, unsigned int geomID) const
|
|
{
|
|
PrimInfoMB pinfo(empty);
|
|
for (size_t j=r.begin(); j<r.end(); j++)
|
|
{
|
|
if (!valid(j, timeSegmentRange(t0t1))) continue;
|
|
const PrimRefMB prim(linearBounds(j,t0t1),this->numTimeSegments(),this->time_range,this->numTimeSegments(),geomID,unsigned(j));
|
|
pinfo.add_primref(prim);
|
|
prims[k++] = prim;
|
|
}
|
|
return pinfo;
|
|
}
|
|
|
|
BBox3fa vbounds(size_t i) const {
|
|
return bounds(i);
|
|
}
|
|
|
|
BBox3fa vbounds(const LinearSpace3fa& space, size_t i) const {
|
|
return bounds(space,i);
|
|
}
|
|
|
|
LBBox3fa vlinearBounds(size_t primID, const BBox1f& time_range) const {
|
|
return linearBounds(primID,time_range);
|
|
}
|
|
|
|
LBBox3fa vlinearBounds(const LinearSpace3fa& space, size_t primID, const BBox1f& time_range) const {
|
|
return linearBounds(space,primID,time_range);
|
|
}
|
|
};
|
|
}
|
|
|
|
DECLARE_ISA_FUNCTION(LineSegments*, createLineSegments, Device* COMMA Geometry::GType);
|
|
}
|