assimp/code/AssetLib/IFC/IFCProfile.cpp

191 lines
8.0 KiB
C++

/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------
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All rights reserved.
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following disclaimer.
* Redistributions in binary form must reproduce the above
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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*/
/** @file IFCProfile.cpp
* @brief Read profile and curves entities from IFC files
*/
#ifndef ASSIMP_BUILD_NO_IFC_IMPORTER
#include "IFCUtil.h"
namespace Assimp {
namespace IFC {
// ------------------------------------------------------------------------------------------------
void ProcessPolyLine(const Schema_2x3::IfcPolyline& def, TempMesh& meshout, ConversionData& /*conv*/)
{
// this won't produce a valid mesh, it just spits out a list of vertices
IfcVector3 t;
for(const Schema_2x3::IfcCartesianPoint& cp : def.Points) {
ConvertCartesianPoint(t,cp);
meshout.mVerts.push_back(t);
}
meshout.mVertcnt.push_back(static_cast<unsigned int>(meshout.mVerts.size()));
}
// ------------------------------------------------------------------------------------------------
bool ProcessCurve(const Schema_2x3::IfcCurve& curve, TempMesh& meshout, ConversionData& conv)
{
std::unique_ptr<const Curve> cv(Curve::Convert(curve,conv));
if (!cv) {
IFCImporter::LogWarn("skipping unknown IfcCurve entity, type is ", curve.GetClassName());
return false;
}
// we must have a bounded curve at this point
if (const BoundedCurve* bc = dynamic_cast<const BoundedCurve*>(cv.get())) {
try {
bc->SampleDiscrete(meshout);
}
catch(const CurveError& cv) {
IFCImporter::LogError(cv.mStr, " (error occurred while processing curve)");
return false;
}
meshout.mVertcnt.push_back(static_cast<unsigned int>(meshout.mVerts.size()));
return true;
}
IFCImporter::LogError("cannot use unbounded curve as profile");
return false;
}
// ------------------------------------------------------------------------------------------------
void ProcessClosedProfile(const Schema_2x3::IfcArbitraryClosedProfileDef& def, TempMesh& meshout, ConversionData& conv)
{
ProcessCurve(def.OuterCurve,meshout,conv);
}
// ------------------------------------------------------------------------------------------------
void ProcessOpenProfile(const Schema_2x3::IfcArbitraryOpenProfileDef& def, TempMesh& meshout, ConversionData& conv)
{
ProcessCurve(def.Curve,meshout,conv);
}
// ------------------------------------------------------------------------------------------------
void ProcessParametrizedProfile(const Schema_2x3::IfcParameterizedProfileDef& def, TempMesh& meshout, ConversionData& conv)
{
if(const Schema_2x3::IfcRectangleProfileDef* const cprofile = def.ToPtr<Schema_2x3::IfcRectangleProfileDef>()) {
const IfcFloat x = cprofile->XDim*0.5f, y = cprofile->YDim*0.5f;
meshout.mVerts.reserve(meshout.mVerts.size()+4);
meshout.mVerts.push_back( IfcVector3( x, y, 0.f ));
meshout.mVerts.push_back( IfcVector3(-x, y, 0.f ));
meshout.mVerts.push_back( IfcVector3(-x,-y, 0.f ));
meshout.mVerts.push_back( IfcVector3( x,-y, 0.f ));
meshout.mVertcnt.push_back(4);
}
else if( const Schema_2x3::IfcCircleProfileDef* const circle = def.ToPtr<Schema_2x3::IfcCircleProfileDef>()) {
if(def.ToPtr<Schema_2x3::IfcCircleHollowProfileDef>()) {
// TODO
}
const size_t segments = conv.settings.cylindricalTessellation;
const IfcFloat delta = AI_MATH_TWO_PI_F/segments, radius = circle->Radius;
meshout.mVerts.reserve(segments);
IfcFloat angle = 0.f;
for(size_t i = 0; i < segments; ++i, angle += delta) {
meshout.mVerts.push_back( IfcVector3( std::cos(angle)*radius, std::sin(angle)*radius, 0.f ));
}
meshout.mVertcnt.push_back(static_cast<unsigned int>(segments));
}
else if( const Schema_2x3::IfcIShapeProfileDef* const ishape = def.ToPtr<Schema_2x3::IfcIShapeProfileDef>()) {
// construct simplified IBeam shape
const IfcFloat offset = (ishape->OverallWidth - ishape->WebThickness) / 2;
const IfcFloat inner_height = ishape->OverallDepth - ishape->FlangeThickness * 2;
meshout.mVerts.reserve(12);
meshout.mVerts.push_back(IfcVector3(0,0,0));
meshout.mVerts.push_back(IfcVector3(0,ishape->FlangeThickness,0));
meshout.mVerts.push_back(IfcVector3(offset,ishape->FlangeThickness,0));
meshout.mVerts.push_back(IfcVector3(offset,ishape->FlangeThickness + inner_height,0));
meshout.mVerts.push_back(IfcVector3(0,ishape->FlangeThickness + inner_height,0));
meshout.mVerts.push_back(IfcVector3(0,ishape->OverallDepth,0));
meshout.mVerts.push_back(IfcVector3(ishape->OverallWidth,ishape->OverallDepth,0));
meshout.mVerts.push_back(IfcVector3(ishape->OverallWidth,ishape->FlangeThickness + inner_height,0));
meshout.mVerts.push_back(IfcVector3(offset+ishape->WebThickness,ishape->FlangeThickness + inner_height,0));
meshout.mVerts.push_back(IfcVector3(offset+ishape->WebThickness,ishape->FlangeThickness,0));
meshout.mVerts.push_back(IfcVector3(ishape->OverallWidth,ishape->FlangeThickness,0));
meshout.mVerts.push_back(IfcVector3(ishape->OverallWidth,0,0));
meshout.mVertcnt.push_back(12);
}
else {
IFCImporter::LogWarn("skipping unknown IfcParameterizedProfileDef entity, type is ", def.GetClassName());
return;
}
IfcMatrix4 trafo;
ConvertAxisPlacement(trafo, *def.Position);
meshout.Transform(trafo);
}
// ------------------------------------------------------------------------------------------------
bool ProcessProfile(const Schema_2x3::IfcProfileDef& prof, TempMesh& meshout, ConversionData& conv)
{
if(const Schema_2x3::IfcArbitraryClosedProfileDef* const cprofile = prof.ToPtr<Schema_2x3::IfcArbitraryClosedProfileDef>()) {
ProcessClosedProfile(*cprofile,meshout,conv);
}
else if(const Schema_2x3::IfcArbitraryOpenProfileDef* const copen = prof.ToPtr<Schema_2x3::IfcArbitraryOpenProfileDef>()) {
ProcessOpenProfile(*copen,meshout,conv);
}
else if(const Schema_2x3::IfcParameterizedProfileDef* const cparam = prof.ToPtr<Schema_2x3::IfcParameterizedProfileDef>()) {
ProcessParametrizedProfile(*cparam,meshout,conv);
}
else {
IFCImporter::LogWarn("skipping unknown IfcProfileDef entity, type is ", prof.GetClassName());
return false;
}
meshout.RemoveAdjacentDuplicates();
if (!meshout.mVertcnt.size() || meshout.mVertcnt.front() <= 1) {
return false;
}
return true;
}
} // ! IFC
} // ! Assimp
#endif // ASSIMP_BUILD_NO_IFC_IMPORTER