Init

physx/samples/samplelargeworld/MeshBuilder.cpp

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+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+//  * Redistributions of source code must retain the above copyright
+//    notice, this list of conditions and the following disclaimer.
+//  * Redistributions in binary form must reproduce the above copyright
+//    notice, this list of conditions and the following disclaimer in the
+//    documentation and/or other materials provided with the distribution.
+//  * Neither the name of NVIDIA CORPORATION nor the names of its
+//    contributors may be used to endorse or promote products derived
+//    from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+// PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT 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, DATA, OR
+// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Copyright (c) 2008-2021 NVIDIA Corporation. All rights reserved.
+// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
+// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.  
+
+#include "SampleDirManager.h"
+#include "SampleLargeWorld.h"
+#include "MeshBuilder.h"
+#include "wavefront.h"
+
+using namespace PxToolkit;
+using namespace physx;
+using namespace shdfnd;
+
+#define MATERIAL_ID	1
+
+
+MeshBuilder::MeshBuilder(SampleLargeWorld& sample, const char* filename)
+	: mSampleLargeWorld(&sample)
+	, mPhysics(sample.getPhysics())
+	, mScene(sample.getActiveScene())
+	, mCooking(sample.getCooking())
+	, mMaterial(sample.getDefaultMaterial())
+	, mStringTable(sample.mStringTable)
+{
+	PxDefaultFileInputData inputStream(filename);	
+	PxSerializationRegistry* sr = PxSerialization::createSerializationRegistry(mPhysics);
+	
+	PxCollection* c = PxSerialization::createCollectionFromXml(inputStream, mCooking, *sr, NULL, mStringTable);		
+	PX_ASSERT( c );
+	
+	c->add( mMaterial, MATERIAL_ID );
+	PxSerialization::complete(*c, *sr);
+	
+	PxU32 count = c->getNbObjects();
+	for(PxU32 i = 0; i < count; i++)
+	{
+		PxBase* object = &c->getObject(i);
+		switch ( object->getConcreteType() )
+		{
+		case PxConcreteType::eCONVEX_MESH:
+			{
+				PxConvexMesh* j = static_cast<PxConvexMesh*>(object);
+				mConvexMeshes.push_back( j );
+				break;
+			}
+		case PxConcreteType::eTRIANGLE_MESH_BVH33:
+		case PxConcreteType::eTRIANGLE_MESH_BVH34:
+			{
+				PxTriangleMesh* j = static_cast<PxTriangleMesh*>(object);
+				mTriMeshes.push_back(j);
+				break;
+			}
+		default:
+			break;
+		}
+	}
+	c->release();
+	sr->release();
+}
+
+void MeshBuilder::addObjMeshToPxCollection(
+										PxPhysics&				physics,
+										PxCooking&				cooking,
+										PxMaterial&				material,
+										const char*				filename,
+										const char*				filenameCooked,
+										const PxTransform&		pose, 
+										const PxVec3&			scale, 
+										PxCollection&			collection,
+										const char*				name)
+{
+	PxTriangleMesh* mesh = NULL;
+	
+	PxDefaultFileInputData cooked(filenameCooked);
+	if (cooked.isValid())
+	{
+		//load from disc
+		mesh = physics.createTriangleMesh(cooked);	//if this load fails, maybe old format.  try to recook below.
+	}
+	if(!mesh)
+	{
+		WavefrontObj wfo;
+		if (!wfo.loadObj(filename, false))
+		{
+			shdfnd::printFormatted("Error loading file: %s\n", filename);
+		}
+
+		PxTriangleMeshDesc meshDesc;
+		meshDesc.points.count				= wfo.mVertexCount;
+		meshDesc.triangles.count			= wfo.mTriCount;
+		meshDesc.points.stride				= sizeof(float) * 3;
+		meshDesc.triangles.stride			= sizeof(int) * 3;
+		meshDesc.points.data				= wfo.mVertices;
+		meshDesc.triangles.data				= wfo.mIndices;
+		
+		bool ok;
+		{
+			PxDefaultFileOutputStream stream(filenameCooked);
+			ok = cooking.cookTriangleMesh(meshDesc, stream);
+		}
+		if ( ok )
+		{
+			PxDefaultFileInputData stream(filenameCooked);
+			mesh = physics.createTriangleMesh(stream);
+		}
+	}
+	PX_ASSERT( mesh );
+
+	PxRigidStatic* actor = physics.createRigidStatic(pose);
+	PX_ASSERT( actor );
+	PxMeshScale meshScale = PxMeshScale(scale, PxQuat(PxIdentity));
+	PxShape* shape = PxRigidActorExt::createExclusiveShape(*actor, PxTriangleMeshGeometry(mesh, meshScale), material);
+	PX_ASSERT( shape );
+	shape->setFlag(PxShapeFlag::eVISUALIZATION, false);
+	if( name ) 
+	{
+		actor->setName(name);
+	}
+	
+	collection.add(*actor);
+}
+
+void MeshBuilder::addRepXToPxCollection(
+										const PxTransform&	pose, 
+										const PxVec3&		scale, 
+										PxCollection&		collection,
+										const char*			name)
+{
+	
+	PxRigidStatic* actor = mPhysics.createRigidStatic(pose);
+	PX_ASSERT( actor );
+	
+	size_t size = mConvexMeshes.size();
+	PxMeshScale meshScale = PxMeshScale(scale, PxQuat(PxIdentity));
+	for(PxU32 i = 0; i < size; ++i)
+	{
+		PxConvexMesh* mesh = mConvexMeshes[i];
+		PxShape* shape = PxRigidActorExt::createExclusiveShape(*actor, PxConvexMeshGeometry(mesh, meshScale), mMaterial);
+		PX_ASSERT( shape );
+		shape->setFlag(PxShapeFlag::eVISUALIZATION, false);
+	}
+	
+	size = mTriMeshes.size();
+	for(PxU32 i = 0; i < size; ++i)
+	{
+		PxTriangleMesh* mesh = mTriMeshes[i];
+		PxShape* shape = PxRigidActorExt::createExclusiveShape(*actor, PxTriangleMeshGeometry(mesh, meshScale), mMaterial);
+		PX_ASSERT( shape );
+		shape->setFlag(PxShapeFlag::eVISUALIZATION, false);
+	}
+	
+	if( name ) 
+		actor->setName(name);
+	
+	collection.add(*actor);
+}