/**
* Actually perform the ruler drawing.
*
* @param drawingTools {@link DrawingTools} used to perform the ruler drawing.
*/
private synchronized void draw(DrawingTools drawingTools) {
BuffersManager bufferManager = drawingTools.getCanvas().getBuffersManager();
ElementsBuffer vertices = bufferManager.createElementsBuffer();
fillVertices(vertices, rulerModel, ticksValue, subTicksValue, canvasProjection);
DefaultGeometry geometry = new DefaultGeometry();
geometry.setFillDrawingMode(Geometry.FillDrawingMode.NONE);
geometry.setLineDrawingMode(Geometry.LineDrawingMode.SEGMENTS);
geometry.setVertices(vertices);
Appearance appearance = new Appearance();
appearance.setLineColor(rulerModel.getColor());
appearance.setLineWidth((float) rulerModel.getLineWidth());
drawingTools.getTransformationManager().useWindowCoordinate();
try {
for (PositionedSprite positionedSprite : spritesList) {
drawingTools.draw(
positionedSprite.getSprite(),
AnchorPosition.CENTER,
positionedSprite.getWindowPosition());
}
drawingTools.draw(geometry, appearance);
} catch (SciRendererException ignored) {
}
drawingTools.getTransformationManager().useSceneCoordinate();
bufferManager.dispose(vertices);
}
/**
* Constructor.
*
* @param drawingTools the {@link DrawingTools} of the canvas where the ruler will be drawn.
* @param rulerModel the {@link RulerModel} of the drawn ruler.
*/
public synchronized RulerDrawingResult drawWithResults(
DrawingTools drawingTools, RulerModel rulerModel) {
this.rulerModel = rulerModel;
subTicksValue = new LinkedList<Double>();
ticksValue = new LinkedList<Double>();
spritesList = new LinkedList<PositionedSprite>();
canvasProjection = drawingTools.getTransformationManager().getCanvasProjection();
Vector3d windowTicksDirection =
canvasProjection.projectDirection(rulerModel.getTicksDirection());
windowTicksDirection = windowTicksDirection.setZ(0);
Vector3d normalizedProjectedTicksDirection = windowTicksDirection.getNormalized();
windowSubTicksDelta = normalizedProjectedTicksDirection.times(rulerModel.getSubTicksLength());
windowTicksDelta = normalizedProjectedTicksDirection.times(rulerModel.getTicksLength());
DecimalFormat format;
if (rulerModel.isAutoTicks()) {
format = computeAutoGraduation();
} else {
format = computeUserGraduation();
}
computeTicksData();
draw(drawingTools);
double distRatio = computeTicksDistanceRatio(windowTicksDirection.getNorm());
return new RulerDrawingResult(
format, ticksValue, subTicksValue, density, distRatio, normalizedProjectedTicksDirection);
}