public class ChemModelRenderer extends AbstractRenderer<IChemModel> implements IRenderer<IChemModel>
IChemModels, IReactions, and
IAtomContainers. The chem object
is converted into a 'diagram' made up of IRenderingElements. It takes
an IDrawVisitor to do the drawing of the generated diagram. Various
display properties can be set using the RendererModel.This class has several usage patterns. For just painting fit-to-screen do:
renderer.paintMolecule(molecule, visitor, drawArea)for painting at a scale determined by the bond length in the RendererModel:
if (moleculeIsNew) {
renderer.setup(molecule, drawArea);
}
Rectangle diagramSize = renderer.paintMolecule(molecule, visitor);
// ...update scroll bars here
to paint at full screen size, but not resize with each change:
if (moleculeIsNew) {
renderer.setScale(molecule);
Rectangle diagramBounds = renderer.calculateDiagramBounds(molecule);
renderer.setZoomToFit(diagramBounds, drawArea);
renderer.paintMolecule(molecule, visitor);
} else {
Rectangle diagramSize = renderer.paintMolecule(molecule, visitor);
// ...update scroll bars here
}
finally, if you are scrolling, and have not changed the diagram:
renderer.repaint(visitor)will just repaint the previously generated diagram, at the same scale.
There are two sets of methods for painting IChemObjects - those that take
a Rectangle that represents the desired draw area, and those that return a
Rectangle that represents the actual draw area. The first are intended for
drawing molecules fitted to the screen (where 'screen' means any drawing
area) while the second type of method are for drawing bonds at the length
defined by the RendererModel parameter bondLength.
There are two numbers used to transform the model so that it fits on screen.
The first is scale, which is used to map model coordinates to
screen coordinates. The second is zoom which is used to, well,
zoom the on screen coordinates. If the diagram is fit-to-screen, then the
ratio of the bounds when drawn using bondLength and the bounds of
the screen is used as the zoom.
So, if the bond length on screen is set to 40, and the average bond length of the model is 2 (unitless, but roughly Ångstrom scale) then the scale will be 20. If the model is 10 units wide, then the diagram drawn at 100% zoom will be 10 * 20 = 200 in width on screen. If the screen is 400 pixels wide, then fitting it to the screen will make the zoom 200%. Since the zoom is just a floating point number, 100% = 1 and 200% = 2.
cachedDiagram, drawCenter, fontManager, generators, modelCenter, rendererModel, transform| Constructor and Description |
|---|
ChemModelRenderer(List<IGenerator<IAtomContainer>> generators,
IFontManager fontManager)
A renderer that generates diagrams using the specified
generators and manages fonts with the supplied font manager.
|
ChemModelRenderer(List<IGenerator<IAtomContainer>> generators,
List<IGenerator<IReaction>> reactionGenerators,
IFontManager fontManager) |
| Modifier and Type | Method and Description |
|---|---|
Rectangle |
calculateDiagramBounds(IChemModel model)
Given a chem model, calculates the bounding rectangle in screen space.
|
double |
calculateScaleForBondLength(double modelBondLength)
Given a bond length for a model, calculate the scale that will transform
this length to the on screen bond length in RendererModel.
|
List<IGenerator<IChemModel>> |
getGenerators()
Returns a
List of IGenerators for this renderer. |
Rectangle |
paint(IChemModel chemModel,
IDrawVisitor drawVisitor)
Paint an IChemModel using the IDrawVisitor at a scale determined by the
bond length in RendererModel.
|
void |
paint(IChemModel chemModel,
IDrawVisitor drawVisitor,
Rectangle2D bounds,
boolean resetCenter)
Paint a ChemModel.
|
void |
repaint(IDrawVisitor drawVisitor)
Repaint using the cached diagram.
|
void |
setScale(IChemModel chemModel)
Set the scale for an IChemModel.
|
void |
setup(IChemModel chemModel,
Rectangle screen)
Setup the transformations necessary to draw this Chem Model.
|
calculateScreenBounds, convertToDiagramBounds, generateDiagram, getBounds, getDrawCenter, getModelCenter, getRenderer2DModel, paint, setDrawCenter, setModelCenter, setup, setupTransformNatural, setupTransformToFit, setZoom, setZoomToFit, shift, shiftDrawCenter, toModelCoordinates, toScreenCoordinatesclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitgenerateDiagram, getRenderer2DModel, setZoom, shiftDrawCenter, toModelCoordinates, toScreenCoordinatespublic ChemModelRenderer(List<IGenerator<IAtomContainer>> generators, IFontManager fontManager)
generators - a list of classes that implement the IGenerator interfacefontManager - a class that manages mappings between zoom and font sizespublic ChemModelRenderer(List<IGenerator<IAtomContainer>> generators, List<IGenerator<IReaction>> reactionGenerators, IFontManager fontManager)
public void setup(IChemModel chemModel, Rectangle screen)
setup in interface IRenderer<IChemModel>chemModel - screen - public void setScale(IChemModel chemModel)
setScale in interface IRenderer<IChemModel>chemModel - public Rectangle paint(IChemModel chemModel, IDrawVisitor drawVisitor)
paint in interface IRenderer<IChemModel>chemModel - the chem model to drawdrawVisitor - the visitor used to draw withpublic void paint(IChemModel chemModel, IDrawVisitor drawVisitor, Rectangle2D bounds, boolean resetCenter)
paint in interface IRenderer<IChemModel>chemModel - drawVisitor - the visitor that does the drawingbounds - the bounds of the area to paint on.resetCenter - if true, set the modelCenter to the center of the ChemModel's bounds.public void repaint(IDrawVisitor drawVisitor)
repaint in class AbstractRenderer<IChemModel>drawVisitor - the wrapper for the graphics object that drawspublic Rectangle calculateDiagramBounds(IChemModel model)
calculateDiagramBounds in interface IRenderer<IChemModel>model - the model to draw.public double calculateScaleForBondLength(double modelBondLength)
calculateScaleForBondLength in class AbstractRenderer<IChemModel>modelBondLength - the wanted model bond length in screen lengthpublic List<IGenerator<IChemModel>> getGenerators()
List of IGenerators for this renderer.getGenerators in interface IRenderer<IChemModel>Copyright © 2022. All rights reserved.