/*
* 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 "LocalGlobalScene.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"
#include "windows.h"

DECLARE_SCENE_NAME(LocalGlobalScene, "Local/Global Scene")

void LocalGlobalScene::Animate(double dt)
{
	physx::PxVec3 position(sin(mTime * 2.0f) * 3.0f, sinf(mTime) * 2.0f, cosf(mTime) - 1.0f);
	physx::PxQuat rotation(sin(mTime * 1.0f) * 4.0f, physx::PxVec3(0.0f, 1.0f, 0.0f));


	mTime += dt;

	mClothActor[0]->mCloth->setTranslation(position);
	mClothActor[0]->mCloth->setRotation(rotation);
	mClothActor[0]->mClothRenderable->setTransform(physx::PxTransform(position + physx::PxVec3(-4.f, 0.f, 0.f), rotation));

	mClothActor[1]->mClothRenderable->setTransform(physx::PxTransform(physx::PxVec3(4.f, 0.f, 0.f), physx::PxQuat(1.f)));
	{
		nv::cloth::MappedRange<physx::PxVec4> particles = mClothActor[1]->mCloth->getCurrentParticles();
		for (int i = 0; i < 2; i++)
		{
			particles[mAttachmentVertices[i]] = physx::PxVec4(physx::PxTransform(position, rotation).transform(mAttachmentVertexOriginalPositions[i].getXYZ()), mAttachmentVertexOriginalPositions[i].w);
		}
	}
	Scene::Animate(dt);
}

void LocalGlobalScene::initializeCloth(int index, physx::PxVec3 offset)
{
	///////////////////////////////////////////////////////////////////////
	ClothMeshData clothMesh;

	physx::PxMat44 transform = PxTransform(PxVec3(0.f, 13.f, 0.f)+ offset, PxQuat(PxPi / 2.0f, PxVec3(1.f, 0.f, 0.f)));
	clothMesh.GeneratePlaneCloth(5.f, 6.f, 69, 79, false, transform);
	clothMesh.AttachClothPlaneByAngles(69, 79);
	clothMesh.SetInvMasses(0.5f + (float)index * 2.0f);

	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());

		float r, g, b;
		r = index == 0 ? 1.0f : 0.3f;
		g = index == 1 ? 1.0f : 0.3f;
		b = index == 2 ? 1.0f : 0.3f;

		mClothActor[index]->mClothRenderable->setColor(DirectX::XMFLOAT4(r, g, b, 1.0f));
	}

	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)*0.95f + clothOffset;

		particlesCopy[i] = physx::PxVec4(clothMesh.mVertices[i], clothMesh.mInvMasses[i]); // w component is 1/mass, or 0.0f for anchored/fixed particles
	}

	if(index == 1)
	{
		mAttachmentVertices[0] = 0;
		mAttachmentVertices[1] = 69;
		mAttachmentVertexOriginalPositions[0] = particlesCopy[mAttachmentVertices[0]];
		mAttachmentVertexOriginalPositions[1] = particlesCopy[mAttachmentVertices[1]];
	}

	// 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));

	// 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 = 1.0f;
		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()));
	mClothActor[index]->mCloth->setDragCoefficient(0.1f);
	mClothActor[index]->mCloth->setLiftCoefficient(0.2f);

	mSolver[index] = getSceneController()->getFactory()->createSolver();
	trackSolver(mSolver[index]);
	trackClothActor(mClothActor[index]);

	// Add the cloth to the solver for simulation
	addClothToSolver(mClothActor[index], mSolver[index]);
}

void LocalGlobalScene::onInitialize()
{
	initializeCloth(1, physx::PxVec3(0.0f, 0.0f, 0.0f));
	initializeCloth(0, physx::PxVec3(0.0f, 0.0f, 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);
	}
}