void QgsVectorFieldSymbolLayer::renderPoint( QPointF point, QgsSymbolRenderContext& context )
{
if ( !mLineSymbol )
{
return;
}
const QgsRenderContext& ctx = context.renderContext();
const QgsFeature* f = context.feature();
if ( !f )
{
//preview
QPolygonF line;
line << QPointF( 0, 50 );
line << QPointF( 100, 50 );
mLineSymbol->renderPolyline( line, nullptr, context.renderContext() );
}
double xComponent = 0;
double yComponent = 0;
double xVal = 0;
if ( f && mXIndex != -1 )
{
xVal = f->attribute( mXIndex ).toDouble();
}
double yVal = 0;
if ( f && mYIndex != -1 )
{
yVal = f->attribute( mYIndex ).toDouble();
}
switch ( mVectorFieldType )
{
case Cartesian:
xComponent = QgsSymbolLayerUtils::convertToPainterUnits( ctx, xVal, mDistanceUnit, mDistanceMapUnitScale );
yComponent = QgsSymbolLayerUtils::convertToPainterUnits( ctx, yVal, mDistanceUnit, mDistanceMapUnitScale );
break;
case Polar:
convertPolarToCartesian( xVal, yVal, xComponent, yComponent );
xComponent = QgsSymbolLayerUtils::convertToPainterUnits( ctx, xComponent, mDistanceUnit, mDistanceMapUnitScale );
yComponent = QgsSymbolLayerUtils::convertToPainterUnits( ctx, yComponent, mDistanceUnit, mDistanceMapUnitScale );
break;
case Height:
xComponent = 0;
yComponent = QgsSymbolLayerUtils::convertToPainterUnits( ctx, yVal, mDistanceUnit, mDistanceMapUnitScale );
break;
default:
break;
}
xComponent *= mScale;
yComponent *= mScale;
QPolygonF line;
line << point;
line << QPointF( point.x() + xComponent, point.y() - yComponent );
mLineSymbol->renderPolyline( line, f, context.renderContext() );
}
void QgsVectorFieldSymbolLayer::renderPoint( const QPointF& point, QgsSymbolV2RenderContext& context )
{
if ( !mLineSymbol )
{
return;
}
const QgsFeature* f = context.feature();
if ( !f )
{
//preview
QPolygonF line;
line << QPointF( 0, 50 );
line << QPointF( 100, 50 );
mLineSymbol->renderPolyline( line, 0, context.renderContext() );
}
double xComponent = 0;
double yComponent = 0;
double xVal = 0;
if ( mXIndex != -1 )
{
xVal = f->attributeMap()[mXIndex].toDouble();
}
double yVal = 0;
if ( mYIndex != -1 )
{
yVal = f->attributeMap()[mYIndex].toDouble();
}
switch ( mVectorFieldType )
{
case Cartesian:
xComponent = context.outputLineWidth( xVal );
yComponent = context.outputLineWidth( yVal );
break;
case Polar:
convertPolarToCartesian( xVal, yVal, xComponent, yComponent );
xComponent = context.outputLineWidth( xComponent );
yComponent = context.outputLineWidth( yComponent );
break;
case Height:
xComponent = 0;
yComponent = context.outputLineWidth( yVal );
break;
default:
break;
}
xComponent *= mScale;
yComponent *= mScale;
QPolygonF line;
line << point;
line << QPointF( point.x() + xComponent, point.y() - yComponent );
mLineSymbol->renderPolyline( line, f, context.renderContext() );
}
void RotateAround::update(float time)
{
CC_UNUSED_PARAM(time);
if(_target) {
const float elapsed = getElapsed();
const float percent = elapsed / _duration;
const float angle = _reversed ? 360.f * -percent : 360.f * percent;
const PolarCoord polarCoord {_startPolarCoord.r, _startPolarCoord.a + angle};
Point pos = convertPolarToCartesian(polarCoord);
pos = Point(_centerOfRotation.x + pos.x, _centerOfRotation.y + pos.y);
_target->setPosition(pos);
}
}