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[MouseImpulse] added new feature to apply like a collision with the m…
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Sleeping and Merging Bodies/MergingBodiesProj/src/mergingBodies/MouseImpulse.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| package mergingBodies; | ||
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| import javax.swing.JPanel; | ||
| import javax.swing.border.TitledBorder; | ||
| import javax.vecmath.Point2d; | ||
| import javax.vecmath.Vector2d; | ||
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| import mintools.parameters.DoubleParameter; | ||
| import mintools.swing.CollapsiblePanel; | ||
| import mintools.swing.VerticalFlowPanel; | ||
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| public class MouseImpulse { | ||
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| private RigidBody pickedBody = null; | ||
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| private Point2d endPoint = new Point2d(); | ||
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| private Point2d pickedPoint = new Point2d(); | ||
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| public boolean released = false; | ||
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| /** | ||
| * Creates a new mouse impulse, where the provided point will be updated with movement of the mouse | ||
| * @param pickedPoint | ||
| */ | ||
| public MouseImpulse() { | ||
| } | ||
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| /** | ||
| * Sets the picked body and the point on that body | ||
| * @param picked | ||
| * @param point | ||
| */ | ||
| public void grab( RigidBody picked, Point2d point ) { | ||
| pickedBody = picked; | ||
| pickedPoint = new Point2d(point); | ||
| } | ||
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| public void release( Point2d point ) { | ||
| released = true; | ||
| endPoint = new Point2d(point); | ||
| } | ||
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| public boolean isGrabbing() { | ||
| return (pickedBody != null); | ||
| } | ||
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| /** | ||
| * Applies the mouse impulse to the picked rigid body, or nothing if no body selected | ||
| */ | ||
| public void apply() { | ||
| if ( pickedBody == null || !released) return; | ||
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| double distance = endPoint.distance( pickedPoint ); | ||
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| Vector2d force = new Vector2d(); | ||
| Vector2d direction = new Vector2d(); | ||
| direction.sub( pickedPoint, endPoint ); | ||
| if ( direction.lengthSquared() < 1e-3 ) return; | ||
| direction.normalize(); | ||
| force.scale( scale.getValue()*distance, direction ); | ||
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| if (pickedBody.isInCollection()) pickedBody.parent.applyForceW( pickedPoint, force ); | ||
| pickedBody.applyForceW( pickedPoint, force ); | ||
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| // Apply only once | ||
| released = false; | ||
| pickedBody = null; | ||
| } | ||
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| /** | ||
| * Mouse impulse scale | ||
| */ | ||
| public DoubleParameter scale = new DoubleParameter("mouse impulse scale", 100, 1, 1e4 ); | ||
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| /** | ||
| * @return controls for the collision processor | ||
| */ | ||
| public JPanel getControls() { | ||
| VerticalFlowPanel vfp = new VerticalFlowPanel(); | ||
| vfp.setBorder( new TitledBorder("Mouse Impulse Controls") ); | ||
| vfp.add( scale.getSliderControls(true) ); | ||
| CollapsiblePanel cp = new CollapsiblePanel(vfp.getPanel()); | ||
| cp.collapse(); | ||
| return cp; | ||
| } | ||
| } |
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