Differential D3850 Diff 20249 extern/mantaflow/preprocessed/vortexsheet.cpp

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extern/mantaflow/preprocessed/vortexsheet.cpp

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				// DO NOT EDIT !
				// This file is generated using the MantaFlow preprocessor (prep generate).

				/******************************************************************************
				*
				* MantaFlow fluid solver framework
				* Copyright 2011 Tobias Pfaff, Nils Thuerey
				*
				* This program is free software, distributed under the terms of the
				* Apache License, Version 2.0
				* http://www.apache.org/licenses/LICENSE-2.0
				*
				* Vortex sheets
				* (warning, the vortex methods are currently experimental, and not fully supported!)
				*
				******************************************************************************/

				#include "vortexsheet.h"
				#include "solvana.h"

				using namespace std;
				namespace Manta {

				// *****************************************************************************
				// VorticityChannel class members

				// *****************************************************************************
				// VortexSheet Mesh class members

				VortexSheetMesh::VortexSheetMesh(FluidSolver *parent) : Mesh(parent), mTexOffset(0.0f)
				{
				addTriChannel(&mVorticity);
				addNodeChannel(&mTex1);
				addNodeChannel(&mTex2);
				addNodeChannel(&mTurb);
				}

				Mesh *VortexSheetMesh::clone()
				{
				VortexSheetMesh *nm = new VortexSheetMesh(mParent);
				nm = this;
				nm->setName(getName());
				return nm;
				}

				void VortexSheetMesh::calcVorticity()
				{
				for (size_t tri = 0; tri < mTris.size(); tri++) {
				VortexSheetInfo &v = mVorticity.data[tri];
				Vec3 e0 = getEdge(tri, 0), e1 = getEdge(tri, 1), e2 = getEdge(tri, 2);
				Real area = getFaceArea(tri);

				if (area < 1e-10) {
				v.smokeAmount = 0;
				v.vorticity = 0;
				}
				else {
				v.smokeAmount = 0;
				v.vorticity = (v.circulation[0] * e0 + v.circulation[1] * e1 + v.circulation[2] * e2) / area;
				}
				}
				}

				void VortexSheetMesh::calcCirculation()
				{
				for (size_t tri = 0; tri < mTris.size(); tri++) {
				VortexSheetInfo &v = mVorticity.data[tri];
				Vec3 e0 = getEdge(tri, 0), e1 = getEdge(tri, 1), e2 = getEdge(tri, 2);
				Real area = getFaceArea(tri);

				if (area < 1e-10 \|\| normSquare(v.vorticity) < 1e-10) {
				v.circulation = 0;
				continue;
				}

				float cx, cy, cz;
				SolveOverconstraint34(e0.x,
				e0.y,
				e0.z,
				e1.x,
				e1.y,
				e1.z,
				e2.x,
				e2.y,
				e2.z,
				v.vorticity.x,
				v.vorticity.y,
				v.vorticity.z,
				cx,
				cy,
				cz);
				v.circulation = Vec3(cx, cy, cz) * area;
				}
				}

				void VortexSheetMesh::resetTex1()
				{
				for (size_t i = 0; i < mNodes.size(); i++)
				mTex1.data[i] = mNodes[i].pos + mTexOffset;
				}

				void VortexSheetMesh::resetTex2()
				{
				for (size_t i = 0; i < mNodes.size(); i++)
				mTex2.data[i] = mNodes[i].pos + mTexOffset;
				}

				void VortexSheetMesh::reinitTexCoords()
				{
				resetTex1();
				resetTex2();
				}

				}; // namespace Manta