/// <summary>
/// Paint a molecule (an IAtomContainer).
/// </summary>
/// <param name="atomContainer">the molecule to paint</param>
/// <param name="drawVisitor">the visitor that does the drawing</param>
/// <param name="bounds">the bounds on the screen</param>
/// <param name="resetCenter">if true, set the draw center to be the center of bounds</param>
public void Paint(IAtomContainer atomContainer, IDrawVisitor drawVisitor, Rect bounds, bool resetCenter)
{
if (atomContainer.Bonds.Count > 0 || atomContainer.Atoms.Count == 1)
{
rendererModel.SetScale(
CalculateScaleForBondLength(GeometryUtil.GetBondLengthAverage(atomContainer)));
}
else if (atomContainer.Atoms.Count > 1)
{
rendererModel.SetScale(
CalculateScaleForBondLength(EstimatedBondLength(atomContainer)));
}
// the diagram to draw
var diagram = GenerateDiagram(atomContainer);
// the bounds of the model from 'Bounds' elements
// no bounding elements, use the atom coordinates
var modelBounds = GetBounds(diagram);
if (modelBounds.IsEmpty)
{
modelBounds = BoundsCalculator.CalculateBounds(atomContainer);
}
SetupTransformToFit(bounds, modelBounds, resetCenter);
this.Paint(drawVisitor, diagram);
}
/// <summary>
/// Setup the transformations necessary to draw this Chem Model.
/// </summary>
/// <param name="chemModel"></param>
/// <param name="screen"></param>
public void Setup(IChemModel chemModel, Rect screen)
{
this.SetScale(chemModel);
var bounds = BoundsCalculator.CalculateBounds(chemModel);
if (bounds != null)
{
this.modelCenter = new Point((bounds.Left + bounds.Right) / 2, (bounds.Top + bounds.Bottom) / 2);
}
this.drawCenter = new Point((screen.Left + screen.Right) / 2, (screen.Top + screen.Bottom) / 2);
this.Setup();
}
/// <summary>
/// Given a chem model, calculates the bounding rectangle in screen space.
/// </summary>
/// <param name="model">the model to draw.</param>
/// <returns>a rectangle in screen space.</returns>
public Rect CalculateDiagramBounds(IChemModel model)
{
var moleculeSet = model.MoleculeSet;
var reactionSet = model.ReactionSet;
if ((moleculeSet == null && reactionSet == null))
{
return(Rect.Empty);
}
var moleculeBounds = Rect.Empty;
var reactionBounds = Rect.Empty;
if (moleculeSet != null)
{
moleculeBounds = BoundsCalculator.CalculateBounds(moleculeSet);
}
if (reactionSet != null)
{
reactionBounds = BoundsCalculator.CalculateBounds(reactionSet);
}
if (moleculeBounds.IsEmpty)
{
return(this.CalculateScreenBounds(reactionBounds));
}
else if (reactionBounds.IsEmpty)
{
return(this.CalculateScreenBounds(moleculeBounds));
}
else
{
var allbounds = Rect.Union(moleculeBounds, reactionBounds);
return(this.CalculateScreenBounds(allbounds));
}
}
