void Physics_Cloth::ResizeHooks(float _ratio)
{
m_hooks = (int)round(_ratio * (m_particlesWidthCount - m_minHooks)) + m_minHooks;
m_hooks++;
ResetCloth(); // reset the cloth to see changes
}
void Physics_Cloth::ResizeHeight(float _ratio)
{
m_height = (int)round(_ratio * (m_maxHeight - m_minHeight)) + m_minHeight;
if (m_height % 2 == 0)
{
// Cloth is even height, want odd
m_height++;
}
// Update Particle Height Count based on new height
m_particlesHeightCount = m_height + 1;
// Set the initialized to false to recreate the cloth again
m_initialisedParticles = false;
ResetCloth(); // reset the cloth to see changes
}
void Physics_Cloth::ResizeWidth(float _ratio)
{
m_width = (int)round(_ratio * (m_maxWidth - m_minWidth)) + m_minWidth;
if (m_width % 2 == 0)
{
// Cloth is even width, want odd
m_width++;
}
// Update Particle Width Count based on new width
m_particlesWidthCount = m_width + 1;
// Set the initialized to false to recreate the cloth again
m_initialisedParticles = false;
ResetCloth(); // reset the cloth to see changes
}
bool Physics_Cloth::Initialise(DX10_Renderer* _pRenderer, DX10_Shader_Cloth* _pShader, int _width, int _height, float _damping, float _timeStep)
{
if (_pRenderer == 0 || _pShader == 0)
{
// Pointer is NULL, initialization failed
return false;
}
// Assign member variables
BaseInitialise();
m_pRenderer = _pRenderer;
m_pShader = _pShader;
m_width = _width;
m_height = _height;
m_particlesWidthCount = m_width + 1;
m_particlesHeightCount = m_height + 1;
m_damping = _damping;
m_timeStep = _timeStep;
m_minWidth = m_minHeight = 5;
m_maxWidth = m_maxHeight = 35;
m_hooks = 3;
m_minHooks = 2;
m_maxHooks = m_maxWidth;
m_selfCollisionRad = 0.85f;
m_constraintIterations = 3;
m_breakModifier = 2.4f;
m_windSpeed = 1.0f;
m_initialisedParticles = false;
m_burnTime = 1.5f;
m_complexWeave = true;
m_maxBlastRadius = 25.0f;
m_blastRadius = 10.0f;
// Set the cloth to initial positions and constraints
VALIDATE(ResetCloth());
return true;
}
void CCloth::Init( int nGridSize, D3DXVECTOR3 v3Gravity, FLOAT fSpringConstant,
FLOAT fNaturalLength, FLOAT fMass, FLOAT fDampFactor, int nPatchTesselation,
LPDIRECT3DTEXTURE9 pTexture, D3DXMATRIX* pWorldM )
{
m_nGridSize = nGridSize;
m_v3Gravity = v3Gravity;
m_fSpringConstant = fSpringConstant;
m_fNaturalLength = fNaturalLength;
m_fMass = fMass;
m_fDampFactor = fDampFactor;
m_nPatchTesselation = nPatchTesselation;
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//Calculate number of balls
m_nNumBalls = m_nGridSize * m_nGridSize;
//Calculate number of springs
//There is a spring pointing right for each ball which is not on the right edge,
//and one pointing down for each ball not on the bottom edge
m_nNumSprings=(m_nGridSize-1)*m_nGridSize*2;
//There is a spring pointing down & right for each ball not on bottom or right,
//and one pointing down & left for each ball not on bottom or left
m_nNumSprings+=(m_nGridSize-1)*(m_nGridSize-1)*2;
//There is a spring pointing right (to the next but one ball)
//for each ball which is not on or next to the right edge,
//and one pointing down for each ball not on or next to the bottom edge
m_nNumSprings+=(m_nGridSize-2)*m_nGridSize*2;
//Create space for balls & springs
m_pBalls1=new BALL[m_nNumBalls];
m_pBalls2=new BALL[m_nNumBalls];
m_pSprings=new SPRING[m_nNumSprings];
if(!m_pBalls1 || !m_pBalls2 || !m_pSprings)
{
//TRACE( "CCloth::Init" );
return;
}
m_dStartTime = (double)timeGetTime();
m_pTexture = pTexture;
//Reset cloth
ResetCloth(pWorldM);
/*
for(int i=0; i<m_nGridSize-1; ++i)
{
for(int j=0; j<m_nGridSize-1; ++j)
{
D3DXVec3TransformCoord( &m_pCurrentBalls[i*m_nGridSize+j].m_v3Pos, &m_pCurrentBalls[i*m_nGridSize+j].m_v3Pos, pWorldM );
D3DXVec3TransformCoord( &m_pCurrentBalls[i*m_nGridSize+j+1].m_v3Pos, &m_pCurrentBalls[i*m_nGridSize+j+1].m_v3Pos, pWorldM );
D3DXVec3TransformCoord( &m_pCurrentBalls[(i+1)*m_nGridSize+j].m_v3Pos, &m_pCurrentBalls[(i+1)*m_nGridSize+j].m_v3Pos, pWorldM );
D3DXVec3TransformCoord( &m_pCurrentBalls[(i+1)*m_nGridSize+j].m_v3Pos, &m_pCurrentBalls[(i+1)*m_nGridSize+j].m_v3Pos, pWorldM );
D3DXVec3TransformCoord( &m_pCurrentBalls[i*m_nGridSize+j+1].m_v3Pos, &m_pCurrentBalls[i*m_nGridSize+j+1].m_v3Pos, pWorldM );
D3DXVec3TransformCoord( &m_pCurrentBalls[(i+1)*m_nGridSize+j+1].m_v3Pos, &m_pCurrentBalls[(i+1)*m_nGridSize+j+1].m_v3Pos, pWorldM );
D3DXVec3TransformCoord( &m_pCurrentBalls[i*m_nGridSize+j].m_v3Normal, &m_pCurrentBalls[i*m_nGridSize+j].m_v3Normal, pWorldM );
D3DXVec3TransformCoord( &m_pCurrentBalls[i*m_nGridSize+j+1].m_v3Normal, &m_pCurrentBalls[i*m_nGridSize+j+1].m_v3Normal, pWorldM );
D3DXVec3TransformCoord( &m_pCurrentBalls[(i+1)*m_nGridSize+j].m_v3Normal, &m_pCurrentBalls[(i+1)*m_nGridSize+j].m_v3Normal, pWorldM );
D3DXVec3TransformCoord( &m_pCurrentBalls[(i+1)*m_nGridSize+j].m_v3Normal, &m_pCurrentBalls[(i+1)*m_nGridSize+j].m_v3Normal, pWorldM );
D3DXVec3TransformCoord( &m_pCurrentBalls[i*m_nGridSize+j+1].m_v3Normal, &m_pCurrentBalls[i*m_nGridSize+j+1].m_v3Normal, pWorldM );
D3DXVec3TransformCoord( &m_pCurrentBalls[(i+1)*m_nGridSize+j+1].m_v3Normal, &m_pCurrentBalls[(i+1)*m_nGridSize+j+1].m_v3Normal, pWorldM );
}
}
/**/
}
