void CImage::Contrast(float _fc)
{
R_ASSERT(pData);
// Apply contrast correction
char *ptr = (char *)pData;
float fc = _fc*2.f;
for (u32 i=0; i<dwHeight; i++) {
for (u32 j=0; j<dwWidth; j++) {
BYTE *p = (BYTE *) &(ptr[i*dwWidth*4 + j*4]);
p[0] = ClampColor(128.f + fc*(float(p[0]) - 128.f)); // red
p[1] = ClampColor(128.f + fc*(float(p[1]) - 128.f)); // green
p[2] = ClampColor(128.f + fc*(float(p[2]) - 128.f)); // blue
}
}
}
void SpotColor::DrawMsg(Int32 x1,Int32 y1,Int32 x2,Int32 y2, const BaseContainer &msg)
{
OffScreenOn();
Vector tmp = m_color.Convert(COLOR_SOURCE_DISPLAY).AsVector();
ClampColor(tmp);
DrawSetPen(tmp);
DrawRectangle(x1,y1,x2,y2);
}
static GPixel ColorToPixel(const GColor &c) {
GColor dc = ClampColor(c);
dc.fR *= dc.fA;
dc.fG *= dc.fA;
dc.fB *= dc.fA;
return GPixel_PackARGB(static_cast<unsigned>((dc.fA * 255.0f) + 0.5f),
static_cast<unsigned>((dc.fR * 255.0f) + 0.5f),
static_cast<unsigned>((dc.fG * 255.0f) + 0.5f),
static_cast<unsigned>((dc.fB * 255.0f) + 0.5f));
}
Bool SpotColor::InputEvent(const BaseContainer &msg)
{
if(msg.GetInt32(BFM_INPUT_DEVICE) == BFM_INPUT_MOUSE){
if(msg.GetInt32(BFM_INPUT_CHANNEL) == BFM_INPUT_MOUSELEFT){
if(m_dragable){
Vector col = m_color.Convert(COLOR_SOURCE_DISPLAY).AsVector();
ClampColor(col);
if(!HandleMouseDrag(msg,DRAGTYPE_RGB,&col,0)){
HandleClick();
}
}
}
}
return FALSE;
}
void CImage::Grayscale()
{
R_ASSERT(pData);
char *ptr = (char *)pData;
for (u32 i=0; i<dwHeight; i++) {
for (u32 j=0; j<dwWidth; j++) {
BYTE *p = (BYTE *) &(ptr[i*dwWidth*4 + j*4]);
// Approximate values for each component's contribution to luminance.
// Based upon the NTSC standard described in ITU-R Recommendation BT.709.
float grey = float(p[0]) * 0.2125f + float(p[1]) * 0.7154f + float(p[2]) * 0.0721f;
p[0] = p[1] = p[2] = ClampColor(grey);
}
}
}
vtkDataArray *
avtColorComposeExpression::DeriveVariable(vtkDataSet *in_ds, int currentDomainsIndex)
{
size_t numinputs = varnames.size();
//
// Our first operand is in the active variable. We don't know if it's
// point data or cell data, so check which one is non-NULL.
//
vtkDataArray *cell_data1 = in_ds->GetCellData()->GetArray(varnames[0]);
vtkDataArray *point_data1 = in_ds->GetPointData()->GetArray(varnames[0]);
vtkDataArray *data1 = NULL, *data2 = NULL, *data3 = NULL, *data4 = NULL;
avtCentering centering;
if (cell_data1 != NULL)
{
data1 = cell_data1;
centering = AVT_ZONECENT;
}
else
{
data1 = point_data1;
centering = AVT_NODECENT;
}
if (data1 != NULL && data1->GetNumberOfComponents() != 1)
{
EXCEPTION2(ExpressionException, outputVariableName,
"The first variable is not a scalar.");
}
// Get the second variable.
if (centering == AVT_ZONECENT)
data2 = in_ds->GetCellData()->GetArray(varnames[1]);
else
data2 = in_ds->GetPointData()->GetArray(varnames[1]);
if (data2 == NULL)
{
EXCEPTION2(ExpressionException, outputVariableName,
"The first two variables have different centering.");
}
if (data2->GetNumberOfComponents() != 1)
{
EXCEPTION2(ExpressionException, outputVariableName,
"The second variable is not a scalar.");
}
if (numinputs >= 3)
{
// Get the third variable.
if (centering == AVT_ZONECENT)
data3 = in_ds->GetCellData()->GetArray(varnames[2]);
else
data3 = in_ds->GetPointData()->GetArray(varnames[2]);
if (data3 == NULL)
{
EXCEPTION2(ExpressionException, outputVariableName,
"The first and third variables have different centering.");
}
if (data3->GetNumberOfComponents() != 1)
{
EXCEPTION2(ExpressionException, outputVariableName,
"The third variable is not a scalar.");
}
}
if (numinputs == 4)
{
// Get the fourth variable.
if (centering == AVT_ZONECENT)
data4 = in_ds->GetCellData()->GetArray(varnames[3]);
else
data4 = in_ds->GetPointData()->GetArray(varnames[3]);
if (data4 == NULL)
{
EXCEPTION2(ExpressionException, outputVariableName,
"The first and fourth variables have different centering.");
}
if (data4->GetNumberOfComponents() != 1)
{
EXCEPTION2(ExpressionException, outputVariableName,
"The fourth variable is not a scalar.");
}
}
vtkIdType nvals = data1->GetNumberOfTuples();
vtkDataArray *dv = data1->NewInstance();
dv->SetNumberOfComponents(4);
dv->SetNumberOfTuples(data1->GetNumberOfTuples());
if(numinputs == 1)
{
for(vtkIdType id = 0; id < nvals; ++id)
{
double val1 = ClampColor(data1->GetTuple1(id));
dv->SetTuple4(id, val1, 0., 0., 255.);
}
}
else if(numinputs == 2)
{
for(vtkIdType id = 0; id < nvals; ++id)
{
double val1 = ClampColor(data1->GetTuple1(id));
double val2 = ClampColor(data2->GetTuple1(id));
dv->SetTuple4(id, val1, val2, 0., 255.);
}
}
else if(numinputs == 3)
{
for(vtkIdType id = 0; id < nvals; ++id)
{
double val1 = ClampColor(data1->GetTuple1(id));
double val2 = ClampColor(data2->GetTuple1(id));
double val3 = ClampColor(data3->GetTuple1(id));
dv->SetTuple4(id, val1, val2, val3, 255.);
}
}
else if(numinputs == 4)
{
for(vtkIdType id = 0; id < nvals; ++id)
{
double val1 = ClampColor(data1->GetTuple1(id));
double val2 = ClampColor(data2->GetTuple1(id));
double val3 = ClampColor(data3->GetTuple1(id));
double val4 = ClampColor(data4->GetTuple1(id));
dv->SetTuple4(id, val1, val2, val3, val4);
}
}
return dv;
}
Color::Color(int r, int g, int b) {
this->r = ClampColor(r);
this->g = ClampColor(g);
this->b = ClampColor(b);
}
void Color::SetBlue(int b) {
this->b = ClampColor(b);
}
void Color::SetGreen(int g) {
this->g = ClampColor(g);
}
void Color::SetRed(int r) {
this->r = ClampColor(r);
}
