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make optical axis look like it passes through things, #283
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,108 @@ | ||
| // Copyright 2021, University of Colorado Boulder | ||
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| /** | ||
| * TODO | ||
| * | ||
| * @author Chris Malley (PixelZoom, Inc.) | ||
| */ | ||
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| import DerivedProperty from '../../../../axon/js/DerivedProperty.js'; | ||
| import IProperty from '../../../../axon/js/IProperty.js'; | ||
| import IReadOnlyProperty from '../../../../axon/js/IReadOnlyProperty.js'; | ||
| import Property from '../../../../axon/js/Property.js'; | ||
| import Bounds2 from '../../../../dot/js/Bounds2.js'; | ||
| import Vector2 from '../../../../dot/js/Vector2.js'; | ||
| import Shape from '../../../../kite/js/Shape.js'; | ||
| import merge from '../../../../phet-core/js/merge.js'; | ||
| import ModelViewTransform2 from '../../../../phetcommon/js/view/ModelViewTransform2.js'; | ||
| import { Line } from '../../../../scenery/js/imports.js'; | ||
| import geometricOptics from '../../geometricOptics.js'; | ||
| import GOColors from '../GOColors.js'; | ||
| import GOConstants from '../GOConstants.js'; | ||
| import Barrier from '../model/Barrier.js'; | ||
| import Representation from '../model/Representation.js'; | ||
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| type Options = { | ||
| visibleProperty: IProperty<boolean> | ||
| }; | ||
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| class OpticalAxisForegroundNode extends Line { | ||
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| /** | ||
| * @param opticPositionProperty | ||
| * @param representationProperty | ||
| * @param sourceObjectPositionProperty | ||
| * @param targetPositionProperty | ||
| * @param barrier | ||
| * @param modelBoundsProperty | ||
| * @param modelViewTransform | ||
| * @param options | ||
| */ | ||
| constructor( opticPositionProperty: IReadOnlyProperty<Vector2>, | ||
| representationProperty: IReadOnlyProperty<Representation>, | ||
| sourceObjectPositionProperty: IReadOnlyProperty<Vector2>, | ||
| targetPositionProperty: IReadOnlyProperty<Vector2>, | ||
| barrier: Barrier | null, | ||
| modelBoundsProperty: IReadOnlyProperty<Bounds2>, | ||
| modelViewTransform: ModelViewTransform2, | ||
| options?: Options ) { | ||
|
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| // create optical axis line, with arbitrary length values. | ||
| super( 0, 0, 1, 0, merge( { | ||
| stroke: GOColors.opticalAxisStrokeProperty, | ||
| lineWidth: GOConstants.AXIS_LINE_WIDTH, | ||
| lineDash: GOConstants.AXIS_LINE_DASH | ||
| }, options ) ); | ||
|
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| // set the horizontal extent of the optical axis line | ||
| modelBoundsProperty.link( bounds => { | ||
| this.setX1( modelViewTransform.modelToViewX( bounds.left ) ); | ||
| this.setX2( modelViewTransform.modelToViewX( bounds.right ) ); | ||
| } ); | ||
|
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| // update y-position of line based on position of optic | ||
| opticPositionProperty.link( position => { | ||
| const yView = modelViewTransform.modelToViewY( position.y ); | ||
| this.setY1( yView ); | ||
| this.setY2( yView ); | ||
| } ); | ||
|
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| //TODO this is a hack for dealing with the fact that the Mirror screen doesn't have a ProjectionScreen | ||
| let barrierPositionProperty; | ||
| if ( barrier ) { | ||
| barrierPositionProperty = barrier.positionProperty; | ||
| } | ||
| else { | ||
| barrierPositionProperty = new DerivedProperty( [ modelBoundsProperty ], | ||
| ( modelBounds: Bounds2 ) => new Vector2( modelBounds.right - 100, modelBounds.centerX ) ); | ||
| } | ||
|
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| // Clip area | ||
| Property.multilink( | ||
| [ representationProperty, sourceObjectPositionProperty, targetPositionProperty, barrierPositionProperty, modelBoundsProperty ], | ||
| ( representation: Representation, sourceObjectPosition: Vector2, targetPosition: Vector2, barrierPosition: Vector2, modelBounds: Bounds2 ) => { | ||
| let minX; | ||
| let maxX; | ||
| const minY = modelViewTransform.modelToViewY( modelBounds.minY ); | ||
| const maxY = modelViewTransform.modelToViewY( modelBounds.maxY ); | ||
| if ( representation.isObject ) { | ||
| minX = modelViewTransform.modelToViewX( sourceObjectPosition.x ); | ||
| maxX = modelViewTransform.modelToViewX( targetPosition.x ); | ||
| } | ||
| else { | ||
| minX = modelViewTransform.modelToViewX( modelBoundsProperty.value.left ); | ||
| maxX = modelViewTransform.modelToViewX( barrierPosition.x ); | ||
| } | ||
| this.clipArea = Shape.rectangle( minX, minY, maxX - minX, maxY - minY ); | ||
| } ); | ||
| } | ||
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| public dispose(): void { | ||
| assert && assert( false, 'dispose is not supported, exists for the lifetime of the sim' ); | ||
| super.dispose(); | ||
| } | ||
| } | ||
|
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| geometricOptics.register( 'OpticalAxisForegroundNode', OpticalAxisForegroundNode ); | ||
|
|
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| export default OpticalAxisForegroundNode; |
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