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physx/samples/samplecustomgravity/SampleCustomGravityBuilder.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 "PxPhysicsAPI.h"
+#include "SampleCustomGravity.h"
+#include "Planet.h"
+#include "PsMathUtils.h"
+
+using namespace PxToolkit;
+
+static const PxReal gPlatformSpeed = 4.0f;
+static const PxReal gGlobalScale = 1.0f;
+
+void SampleCustomGravity::buildScene()
+{
+	if(1)
+	{
+		importRAWFile("planet.raw", 2.0f);
+	}
+
+	if(0)
+	{
+//		const PxU32 tesselationLevel = 10;
+		const PxU32 tesselationLevel = 32;
+		PlanetMesh planet;
+		planet.generate(mPlanet.mPos, mPlanet.mRadius, tesselationLevel, tesselationLevel);
+
+		RAWMesh data;
+		data.mName			= "planet";
+		data.mTransform		= PxTransform(PxIdentity);
+		data.mNbVerts		= planet.getNbVerts();
+		data.mVerts			= planet.getVerts();
+		data.mUVs			= 0;
+		data.mMaterialID	= 0;
+		data.mNbFaces		= planet.getNbTris();
+		data.mIndices		= planet.getIndices();
+		char buffer[256];
+		sprintf(buffer, "PlanetMesh%.2f", mPlanet.mRadius);
+
+//		char srcMetaFile[512];	srcMetaFile[0]=0;
+//		GetOutputFileManager().getFilePath(buffer, srcMetaFile);
+//		setFilename(srcMetaFile);
+
+		setFilename(getSampleMediaFilename(buffer));
+		newMesh(data);
+	}
+
+	if(0)
+	{
+
+	const PxF32 rotationSpeed = 1.0f;
+	BasicRandom random(42);
+	const PxU32 nbPlatforms = 20;
+	for(PxU32 i=0;i<nbPlatforms;i++)
+	{
+		PxVec3 up;
+		random.unitRandomPt(up);
+		up.normalize();
+
+		const PxQuat q = PxShortestRotation(PxVec3(1.0f, 0.0f, 0.0f), up);
+
+		PxVec3 pts[2];
+		pts[0] = up * mPlanet.mRadius;
+		pts[1] = up * (mPlanet.mRadius + 5.0f);
+		KinematicPlatform* platform = createPlatform(2, pts, q, gGlobalScale * PxVec3(0.1f, 4.0f, 1.0f), gPlatformSpeed, rotationSpeed);
+
+		platform->setT(PxF32(i)/PxF32(nbPlatforms-1));
+	}
+
+	}
+
+	if(0)
+	{
+		const PxF32 radius = 25.0f;
+		const PxF32 platformSpeed = 4.0f;
+//		const PxF32 platformSpeed = 10.0f;
+
+		const PxU32 nbPts = 100;
+		PxVec3 pts[100];
+		for(PxU32 i=0;i<nbPts;i++)
+		{
+			const float angle = 6.283185f * float(i)/float(nbPts-1);
+			const float s = sinf(angle);
+			const float c = cosf(angle);
+			pts[i] = radius * PxVec3(s, c, 0.0f);
+		}
+		const PxReal rotationSpeed = 0.0f;
+
+		const PxVec3 up(0.0f, 0.0f, 1.0f);
+		const PxQuat q = PxShortestRotation(PxVec3(1.0f, 0.0f, 0.0f), up);
+
+		KinematicPlatform* platform = createPlatform(nbPts, pts, q, gGlobalScale * PxVec3(1.0f, 1.0f, 1.0f), platformSpeed, rotationSpeed);
+		const PxF32 travelTime = platform->getTravelTime();
+		platform->setRotationSpeed(-6.283185f/travelTime);
+	}
+
+}