Op donderdag 27 februari 2003 14:47, schreef Peter Murray-Rust:
> >If *you* had some "skilled talent" to allocate for a month or two, is
> >this the area where you would choose spend it?
> >
> >If not, what would *you* have me work on?
>
> Wow! Actually I would concentrate on displaying molecular and atomic
> properties at intermediate graphics resolution (e.g. charges, dipoles,
> electron density, etc.) I would also want an interactive (event) GUI.
The CDK uses this design in JChemPaint:
1. there is a cdk.renderer.Renderer2D class which does only the rendering of
the model (The Viewer in the model-viewer-controller paradigma)
2. there is the model, which is an cdk.ChemModel I think, or that's what it
probably should be. That it where the chemical data is.
3. and finally there is the cdk.controller.Controller2D which traps mouse
events, key events etc. Given a certain mode, dragging the mouse would
result in moving an atom/bond or drawing a lasso, or point a bond which
is being added in some direction.
Furthermore,
4. there is the CDKListener, which can be added to the model so that any
class (i.e. program, e.g. JChemPaintPanel I think), gets events when the
model has changed.
As in Jmol, CDK also separates the rendering settings from the actual
rendering, i.e. CDK has Renderer2D and a Renderer2DModel. The latter
would specify the zoom in factor, the width of an standard bond, the
separation between the bond for double bonds, the background color
etc.
Similarly, the Controller2D has such a Model which keeps record of the
drawing mode, and some other settings...
I guess, what Peter is aiming at is that he want to be able to overwrite the
Controller, i.e. use a different one than the standard Controller2D, that
enables him to specify specifically how Jmol should respond when the
mouse is dragged or moved. Is that right, Peter?
Egon
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