NvCloth 1.1.4 Release. (24070740)

1 files changed, 114 insertions, 0 deletions

diff --git a/NvCloth/samples/SampleBase/scene/scenes/TimeStepScene.cpp b/NvCloth/samples/SampleBase/scene/scenes/TimeStepScene.cpp
new file mode 100644
index 0000000..82ac9fe
--- /dev/null
+++ b/NvCloth/samples/SampleBase/scene/scenes/TimeStepScene.cpp
@@ -0,0 +1,114 @@
+/*
+* Copyright (c) 2008-2017, NVIDIA CORPORATION.  All rights reserved.
+*
+* NVIDIA CORPORATION and its licensors retain all intellectual property
+* and proprietary rights in and to this software, related documentation
+* and any modifications thereto.  Any use, reproduction, disclosure or
+* distribution of this software and related documentation without an express
+* license agreement from NVIDIA CORPORATION is strictly prohibited.
+*/
+
+#include "TimeStepScene.h"
+#include "scene/SceneController.h"
+#include <NvClothExt/ClothFabricCooker.h>
+#include "ClothMeshGenerator.h"
+#include <NvCloth/Fabric.h>
+#include <NvCloth/Solver.h>
+#include <NvCloth/Cloth.h>
+#include <NvCloth/Factory.h>
+#include "Renderer.h"
+#include "renderer/RenderUtils.h"
+
+DECLARE_SCENE_NAME(TimeStepScene, "Time Step Scene")
+
+void TimeStepScene::initializeCloth(int index, physx::PxVec3 offset)
+{
+	ClothMeshData clothMesh;
+
+	physx::PxMat44 transform = PxTransform(PxVec3(0.f, 13.f, 0.f) + offset, PxQuat(PxPi / 2.f, PxVec3(1.f, 0.f, 0.f)));
+	clothMesh.GeneratePlaneCloth(4.f, 4.f, 1, 1, false, transform);
+	clothMesh.AttachClothPlaneByAngles(1, 1);
+
+	mClothActor[index] = new ClothActor;
+	nv::cloth::ClothMeshDesc meshDesc = clothMesh.GetClothMeshDesc();
+	{
+		mClothActor[index]->mClothRenderMesh = new ClothRenderMesh(meshDesc);
+		mClothActor[index]->mClothRenderable = getSceneController()->getRenderer().createRenderable(*(static_cast<IRenderMesh*>(mClothActor[index]->mClothRenderMesh)), *getSceneController()->getDefaultMaterial());
+		mClothActor[index]->mClothRenderable->setColor(getRandomPastelColor());
+	}
+
+	nv::cloth::Vector<int32_t>::Type phaseTypeInfo;
+	mFabric[index] = NvClothCookFabricFromMesh(getSceneController()->getFactory(), meshDesc, physx::PxVec3(0.0f, 0.0f, 1.0f), &phaseTypeInfo, false);
+	trackFabric(mFabric[index]);
+
+	// Initialize start positions and masses for the actual cloth instance
+	// (note: the particle/vertex positions do not have to match the mesh description here. Set the positions to the initial shape of this cloth instance)
+	std::vector<physx::PxVec4> particlesCopy;
+	particlesCopy.resize(clothMesh.mVertices.size());
+
+	physx::PxVec3 clothOffset = transform.getPosition();
+	for (int i = 0; i < (int)clothMesh.mVertices.size(); i++)
+	{
+		// To put attachment point closer to each other
+		if(clothMesh.mInvMasses[i] < 1e-6)
+			clothMesh.mVertices[i] = (clothMesh.mVertices[i] - clothOffset) * 1.0f + clothOffset;
+
+		particlesCopy[i] = physx::PxVec4(clothMesh.mVertices[i], 0.5f * clothMesh.mInvMasses[i]); // w component is 1/mass, or 0.0f for anchored/fixed particles
+	}
+
+	// Create the cloth from the initial positions/masses and the fabric
+	mClothActor[index]->mCloth = getSceneController()->getFactory()->createCloth(nv::cloth::Range<physx::PxVec4>(&particlesCopy[0], &particlesCopy[0] + particlesCopy.size()), *mFabric[index]);
+	particlesCopy.clear(); particlesCopy.shrink_to_fit();
+
+	mClothActor[index]->mCloth->setGravity(physx::PxVec3(0.0f, -9.8f*0.0f, 0.0f));
+	mClothActor[index]->mCloth->setTetherConstraintStiffness(0.01);
+	mClothActor[index]->mCloth->setStiffnessFrequency(10);
+	mClothActor[index]->mCloth->setTetherConstraintScale(0.7);
+	if(index == 0)
+	{
+		mClothActor[index]->mCloth->setSolverFrequency(60);
+	}
+	else
+	{
+		mClothActor[index]->mCloth->setSolverFrequency(300);
+	}
+
+	//actual spring frequency of the 300hz cloth should be about 2.25x faster instead
+	// of 4.5x if the stiffness compensation is used (Log stiffness).
+
+	// Setup phase configs
+	std::vector<nv::cloth::PhaseConfig> phases(mFabric[index]->getNumPhases());
+	for (int i = 0; i < (int)phases.size(); i++)
+	{
+		phases[i].mPhaseIndex = i;
+		phases[i].mStiffness = 0.0f;
+		phases[i].mStiffnessMultiplier = 1.0f;
+		phases[i].mCompressionLimit = 1.0f;
+		phases[i].mStretchLimit = 1.0f;
+	}
+	mClothActor[index]->mCloth->setPhaseConfig(nv::cloth::Range<nv::cloth::PhaseConfig>(&phases.front(), &phases.back()));
+
+	trackClothActor(mClothActor[index]);
+
+	// Add the cloth to the solver for simulation
+	addClothToSolver(mClothActor[index], mSolver);
+}
+
+void TimeStepScene::onInitialize()
+{
+	mSolver = getSceneController()->getFactory()->createSolver();
+	trackSolver(mSolver);
+
+	initializeCloth(0,physx::PxVec3(-7.0f, 2.0f, 0.0f));
+	initializeCloth(1, physx::PxVec3(2.0f, 2.0f, 0.0f));
+
+	mTime = 0.0f;
+
+	{
+		IRenderMesh* mesh = getSceneController()->getRenderer().getPrimitiveRenderMesh(PrimitiveRenderMeshType::Plane);
+		Renderable* plane = getSceneController()->getRenderer().createRenderable(*mesh, *getSceneController()->getDefaultPlaneMaterial());
+		plane->setTransform(PxTransform(PxVec3(0.f, 0.f, 0.f), PxQuat(PxPiDivTwo, PxVec3(0.f, 0.f, 1.f))));
+		plane->setScale(PxVec3(1000.f));
+		trackRenderable(plane);
+	}
+}