/*
Returns the derivative at the specified grid location.
By default this function returns central differences.
Due to the interpolation this function uses it implicitly returs
forward/backward differences at the respective grid boundaries.
*/
CVector2D CScalarField2D::_getDerivative(float x, float y) const
{
static float step = .5f;
static float div = 2.0f*step;
/*float f1(_getValue(x-step, y));
float f2(_getValue(x+step, y));
float f3(_getValue(x, y-step));
float f4(_getValue(x, y+step));
return CVector2D( (f2-f1)/div, (f4-f3)/div );*/
return CVector2D( (_getValue(x+step, y)-_getValue(x-step, y))/div, (_getValue(x, y+step)-_getValue(x, y-step))/div );
}
float CScalarField2D::GetValue(const CPointf &posD) const
{
static float x, y;
_getGridCoordinates(posD.x, posD.y, x, y);
return _getValue(x,y);
}
/*
Returns the bi-linearly interpolated value at the specified coordinate in domain space.
Parameters:
dx: X-component of the domain coordinate
dy: Y-component of the domain coordinate
posD: Two dimensional point specifying the domain coordinate
*/
float CScalarField2D::GetValue(float dx, float dy) const
{
static float x, y;
_getGridCoordinates(dx, dy, x, y);
return _getValue(x,y);
}
void RainbowLegMode::_doubleRainbow()
{
for (int i = 0; i < _half; i++)
_pixels[i].setHSV(map(i, 0, _half, 0, 255), 255, _getValue(i));
// <gerstle> setting _pixels[_pixelCount - 1 - i] to _pixels[i] would work if half
// was actually half... so, run through both sides... :(
for (int i = _half; i < _pixelCount; i++)
_pixels[i].setHSV(map((_pixelCount - i - 1), 0, (_pixelCount - _half - 1), 0, 255), 255, _getValue(i));
}
void RainbowLegMode::_rotate()
{
if (_currentTime > (_lastChangeTimer + _config->rainbow.delay))
{
_lastChangeTimer = _currentTime;
_perlinZ += 0.001;
// <gerstle> this increment shows the entire hue spectrum on a leg
// if you go less than that, not all the colors show all the time, kinda nice.
for (int i = 0; i < _pixelCount; i++)
_pixels[i].setHSV(_lastStartHue + (((float)i) * (_increment * .6)), 255, _getValue(i));
// <gerstle> let it roll under
_lastStartHue--;
}
}
void RainbowLegMode::_rise()
{
if (_currentTime > (_lastChangeTimer + _config->rainbow.delay))
{
_lastChangeTimer = _currentTime;
_perlinZ += 0.001;
for (int i = 0; i < _half; i++)
_pixels[i].setHSV(_lastStartHue + (((float)i) * _increment), 255, _getValue(i));
// <gerstle> setting _pixels[_pixelCount - 1 - i] to _pixels[i] would work if half
// was actually half... so, run through both sides... :(
for (int i = _half; i < _pixelCount; i++)
_pixels[i].setHSV(_lastStartHue + (((float)(_pixelCount - i - 1)) * _increment), 255, _getValue(i));
// <gerstle> let it roll over
_lastStartHue++;
}
}
void blTerrainProxy::light(LightInfo * light)
{
// If we don't have terrain or its not a directional
// light then skip processing.
TerrainBlock * terrain = getObject();
if ( !terrain || light->getType() != LightInfo::Vector )
return;
S32 time = Platform::getRealMilliseconds();
// reset
mShadowVolume = new ShadowVolumeBSP;
// build interior shadow volume
for(ObjectProxy ** itr = gLighting->mLitObjects.begin(); itr != gLighting->mLitObjects.end(); itr++)
{
ObjectProxy* objproxy = *itr;
if (markObjectShadow(objproxy))
objproxy->addToShadowVolume(mShadowVolume, light, SceneLighting::SHADOW_DETAIL);
}
lightVector(light);
// set the lightmap...
terrain->clearLightMap();
// Blur...
F32 kernel[3][3] = { {1, 2, 1},
{2, 3, 2},
{1, 2, 1} };
F32 modifier = 1;
F32 divisor = 0;
for( U32 i=0; i<3; i++ )
{
for( U32 j=0; j<3; j++ )
{
if( i==1 && j==1 )
{
kernel[i][j] = 1 + kernel[i][j] * modifier;
}
else
{
kernel[i][j] = kernel[i][j] * modifier;
}
divisor += kernel[i][j];
}
}
for( U32 i=0; i < mLightMapSize; i++ )
{
for( U32 j=0; j < mLightMapSize; j++ )
{
ColorF val;
val = _getValue( i-1, j-1 ) * kernel[0][0];
val += _getValue( i-1, j ) * kernel[0][1];
val += _getValue( i-1, j+1 ) * kernel[0][2];
val += _getValue( i, j-1 ) * kernel[1][0];
val += _getValue( i, j ) * kernel[1][1];
val += _getValue( i, j+1 ) * kernel[1][2];
val += _getValue( i+1, j-1 ) * kernel[2][0];
val += _getValue( i+1, j ) * kernel[2][1];
val += _getValue( i+1, j+1 ) * kernel[2][2];
U32 edge = 0;
if( j == 0 || j == mLightMapSize - 1 )
edge++;
if( i == 0 || i == mLightMapSize - 1 )
edge++;
if( !edge )
val = val / divisor;
else
val = mLightmap[ i * mLightMapSize + j ];
// clamp values
mLightmap[ i * mLightMapSize + j ]= val;
}
}
// And stuff it into the texture...
GBitmap *terrLightMap = terrain->getLightMap();
for(U32 y = 0; y < mLightMapSize; y++)
{
for(U32 x = 0; x < mLightMapSize; x++)
{
ColorI color(255, 255, 255, 255);
color.red = mLightmap[x + y * mLightMapSize].red * 255;
color.green = mLightmap[x + y * mLightMapSize].green * 255;
color.blue = mLightmap[x + y * mLightMapSize].blue * 255;
terrLightMap->setColor(x, y, color);
}
}
/*
// This handles matching up the outer edges of the terrain
// lightmap when it has neighbors
if (!terrain->isTiling())
{
for (S32 y = 0; y < terrLightMap->getHeight(); y++)
{
ColorI c;
if (terrain->getFile()->mEdgeTerrainFiles[0])
{
terrLightMap->getColor(terrLightMap->getWidth()-1,y,c);
terrLightMap->setColor(0,y,c);
terrLightMap->setColor(1,y,c);
}
else
{
terrLightMap->getColor(0,y,c);
terrLightMap->setColor(terrLightMap->getWidth()-1,y,c);
terrLightMap->setColor(terrLightMap->getWidth()-2,y,c);
}
}
for (S32 x = 0; x < terrLightMap->getHeight(); x++)
{
ColorI c;
if (terrain->getFile()->mEdgeTerrainFiles[1])
{
terrLightMap->getColor(x,terrLightMap->getHeight()-1,c);
terrLightMap->setColor(x,0,c);
terrLightMap->setColor(x,1,c);
}
else
{
terrLightMap->getColor(x,0,c);
terrLightMap->setColor(x,terrLightMap->getHeight()-1,c);
terrLightMap->setColor(x,terrLightMap->getHeight()-2,c);
}
}
}
*/
delete mShadowVolume;
Con::printf(" = terrain lit in %3.3f seconds", (Platform::getRealMilliseconds()-time)/1000.f);
}
void RainbowLegMode::_singleRainbow()
{
for (int i = 0; i < _pixelCount; i++)
_pixels[i].setHSV(map(i, 0, _pixelCount, 0, 255), 255, _getValue(i));
}