void Canvas::paintEvent(QPaintEvent *event)
{
QPainter painter(this);
QRect dirtyRect = event->rect();
if(dirtyRect.isEmpty())return;
// painter.setOpacity(opacity);
combineLayers(dirtyRect);
painter.drawPixmap(dirtyRect, image, dirtyRect);
if(!isEnabled()){
QBrush brush;
brush.setStyle(Qt::BDiagPattern);
brush.setColor(Qt::lightGray);
painter.setBrush(brush);
QRect rect = this->rect();
rect.setWidth(rect.width());
rect.setHeight(rect.height());
painter.drawRect(rect);
}
QStyleOption opt;
opt.init(this);
style()->drawPrimitive(QStyle::PE_Widget,
&opt, &painter, this);
}
QPixmap Canvas::currentCanvas()
{
return combineLayers();
}
void ossimHillshadeTool::initProcessingChain()
{
// Need a mosaic of DEM over the AOI as an image mosaic:
ossimRefPtr<ossimImageSource> demMosaic = mosaicDemSources();
m_procChain->add(demMosaic.get());
// Set up the normal source.
ossimRefPtr<ossimImageToPlaneNormalFilter> normSource = new ossimImageToPlaneNormalFilter;
normSource->setTrackScaleFlag(true);
m_procChain->add( normSource.get() );
// Set the smoothness factor.
ossim_float64 gain = 1.0;
normSource->setSmoothnessFactor(gain);
// Create the bump shade.
ossimRefPtr<ossimBumpShadeTileSource> bumpShade = new ossimBumpShadeTileSource;
m_procChain->add(bumpShade.get());
// Set the azimuth angle.
ossim_float64 azimuthAngle = 180;
ossimString lookup = m_kwl.findKey( ossimKeywordNames::AZIMUTH_ANGLE_KW );
if ( lookup.size() )
{
ossim_float64 f = lookup.toFloat64();
if ( (f >= 0) && (f <= 360) )
{
azimuthAngle = f;
}
}
bumpShade->setAzimuthAngle(azimuthAngle);
// Set the elevation angle.
ossim_float64 elevationAngle = 45.0;
lookup = m_kwl.findKey( ossimKeywordNames::ELEVATION_ANGLE_KW );
if ( lookup.size() )
{
ossim_float64 f = lookup.toFloat64();
if ( (f >= 0.0) && (f <= 90) )
{
elevationAngle = f;
}
}
bumpShade->setElevationAngle(elevationAngle);
// Color can be added via color image source:
if (!m_imgLayers.empty())
{
// A color source image (or list) is provided. Add them as input to bump shade:
ossimRefPtr<ossimImageSource> colorSource = combineLayers( m_imgLayers );
bumpShade->connectMyInputTo(1, colorSource.get());
}
else
{
// Default colors are grey:
ossim_uint8 r = 0xff;
ossim_uint8 g = 0xff;
ossim_uint8 b = 0xff;
lookup = m_kwl.findKey( COLOR_RED_KW );
if ( lookup.size() )
r = lookup.toUInt8();
lookup = m_kwl.findKey( COLOR_GREEN_KW );
if ( lookup.size() )
g = lookup.toUInt8();
lookup = m_kwl.findKey( COLOR_BLUE_KW );
if ( lookup.size() )
b = lookup.toUInt8();
bumpShade->setRgbColorSource(r, g, b);
}
}
