Color colorFromString(string s)
{
static Color s_cLastCol;
Color c;
if(s == "random_pastel") //Some random pastel color (good for parasprites)
{
float h, s, v;
h = randFloat(0.0, 360.0);
s = randFloat(40.0, 100.0);
v = 100.0;
c = HsvToRgb(h,s,v);
c.r /= 100;
c.g /= 100;
c.b /= 100;
s_cLastCol = c;
return c;
}
else if(s == "last") //Last color we got from this function
return s_cLastCol;
s = stripCommas(s);
//Now, parse
istringstream iss(s);
int r, g, b, a;
if(iss >> r >> g >> b)
{
if(!(iss >> a))
c.from256(r,g,b);
else
c.from256(r,g,b,a);
}
void Color::fromHSV(float h, float s, float v, float fa)
{
a = fa;
Color c = HsvToRgb(h, s, v);
r = c.r/100.0;
g = c.g/100.0;
b = c.b/100.0;
}
void vtkLookupTable2D::HsvToRgb(double h, double s, double v, unsigned char *r, unsigned char *g, unsigned char *b){
double dr, dg, db;
HsvToRgb(h, s, v, &dr, &dg, &db);
*r = (unsigned char)((int)(dr * 255.0));
*g = (unsigned char)((int)(dg * 255.0));
*b = (unsigned char)((int)(db * 255.0));
}
void vtkLookupTable2D::HsvToRgb(unsigned char h, unsigned char s, unsigned char v, unsigned char *r, unsigned char *g, unsigned char *b){
double dh, ds, dv, dr, dg, db;
int ih, is, iv, ir, ig, ib;
dh = ((double) ((int) h)) / 255.0;
ds = ((double) ((int) s)) / 255.0;
dv = ((double) ((int) v)) / 255.0;
HsvToRgb(dh, ds, dv, &dr, &dg, &db);
*r = (unsigned char)((int)(dr * 255.0));
*g = (unsigned char)((int)(dg * 255.0));
*b = (unsigned char)((int)(db * 255.0));
}
void change_value(float val) {
float tmp = hsv_color.v + val;
if (tmp > 1.0)
tmp = 1.;
if (tmp < 0.)
tmp = 0.;
hsv_color.v = tmp;
rgb_color = HsvToRgb(&hsv_color);
update_color();
}
void change_saturation(float val) {
float tmp = hsv_color.s + val;
if (tmp > 1.0)
tmp = 1.;
if (tmp < 0.)
tmp = 0.001;
hsv_color.s = tmp;
rgb_color = HsvToRgb(&hsv_color);
update_color();
}
void change_hue(float val) {
float tmp = hsv_color.h + val;
if (tmp > 360) {
tmp -= 360.;
} else if (tmp < 0) {
tmp = 360. - fabs(tmp);
}
hsv_color.h = tmp;
rgb_color = HsvToRgb(&hsv_color);
update_color();
}
COLORREF ChangeColorBrightness(COLORREF color, float modifier) {
float r = static_cast<float>(GetRValue(color)) / 255.0f;
float g = static_cast<float>(GetGValue(color)) / 255.0f;
float b = static_cast<float>(GetBValue(color)) / 255.0f;
float h, s, v;
RgbToHsv(r, g, b, h, s, v);
v += modifier;
if (v < 0.0f) v = 0.0f;
if (v > 1.0f) v = 1.0f;
HsvToRgb(r, g, b, h, s, v);
return RGB(static_cast<BYTE>(r * 255),
static_cast<BYTE>(g * 255),
static_cast<BYTE>(b * 255));
}
void vtkLookupTable2D::MapScalarsThroughTable2(void *input, unsigned char *output,
int inputDataType, int numberOfValues,
int inputIncrement, int outputIncrement)
{
vtkDataArray *secondaryDataArray = NULL;
bool bIfUseSecondaryData = false;
if (m_pvtkPolyDataMapper != NULL){
std::cout << "vtkLookupTable2D::MapScalarsThroughTable2() called:" << std::endl;
std::cout << "number of values: " << numberOfValues << std::endl;
std::cout << "input increment: " << inputIncrement << std::endl;
std::cout << "outputIncrement: " << outputIncrement << std::endl;
vtkPolyData *polys = m_pvtkPolyDataMapper->GetInput();
if (polys != NULL){
vtkPointData *pdata = polys->GetPointData();
if (pdata != NULL){
secondaryDataArray = pdata->GetArray(m_stdstrSecondaryDataName.c_str());
if ((secondaryDataArray != NULL) && (m_bUseSecondaryDataArray)){
bIfUseSecondaryData = true;
if (numberOfValues != secondaryDataArray->GetNumberOfTuples()){
std::cout << "MapScalarsThroughTable2() secondary data array has the wrong number of tuples" << std::endl;
bIfUseSecondaryData = false;
}
std::cout << "Using secondary data for color saturation" << std::endl;
std::cout << "Secondary data range: " << m_dSecondaryMin << " " << m_dSecondaryMax << std::endl;
}
}
}else{
std::cout << "Polys where NULL" << std::endl;
}
} else {
std::cout << "No color mapping possible, polydata mapper is NULL" << std::endl;
}
vtkLookupTable::MapScalarsThroughTable2(input, output, inputDataType, numberOfValues, inputIncrement, outputIncrement);
int numNaNs = 0;
double dSecondaryRange = m_dSecondaryMax - m_dSecondaryMin;
if ((outputIncrement == 4) && m_bUseSecondaryDataArray && bIfUseSecondaryData){
for (int i=0; i<numberOfValues; i++){
unsigned char r, g, b, a;
unsigned char rNew, gNew, bNew, aNew;
double h, s, v;
r = output[i * 4 + 0];
g = output[i * 4 + 1];
b = output[i * 4 + 2];
a = output[i * 4 + 3];
this->RgbToHsv(r, g, b, &h, &s, &v);
double dataval = secondaryDataArray->GetTuple1(i);
double fraction = (dataval - m_dSecondaryMin) / dSecondaryRange;
char dataValAsChar[20];
sprintf(dataValAsChar, "%lf", fraction);
if (std::string(dataValAsChar).find("-1.#IND") != std::string::npos){
fraction = -1.0;
numNaNs++;
}
if (fraction >= 0.0){
s *= (1.0 - fraction);
v = 1.0 - fraction;
} else {
v = 0.0;
}
HsvToRgb(h, s, v, &rNew, &gNew, &bNew);
aNew = a;
if (! (i % 100)){
std::cout << i << " rgbaold: " << (int) r << " " << (int) g << " " << (int) b << " " << (int) a;
std::cout << " rgbanew: " << (int) rNew << " " << (int) gNew << " " << (int) bNew << " fraction: " << fraction << std::endl;
}
output[i * 4 + 0] = rNew;
output[i * 4 + 1] = gNew;
output[i * 4 + 2] = bNew;
output[i * 4 + 3] = aNew;
}
} else {
std::cout << "output data are not of rgba type" << std::endl;
}
std::cout << "Number of NaNs: " << numNaNs << std::endl;
std::cout << "Number of values: " << numberOfValues << std::endl;
}
