├── .gitignore ├── Gruntfile.cjs ├── LICENSE ├── README.md ├── assets ├── gravity-and-orbits-screenshot-alt1.png ├── gravity-and-orbits-screenshot-alt2.png ├── gravity-and-orbits-screenshot-screen1.png ├── gravity-and-orbits-screenshot-screen2.png ├── gravity-and-orbits-screenshot.png ├── icon_mass.ai ├── moon_generic.ai ├── path_icon.ai ├── path_icon_projector.ai ├── planet_generic.ai ├── reset_arrow.ai ├── screen-icons.ai ├── space-station.ai └── sun.ai ├── dependencies.json ├── doc ├── implementation-notes.md └── model.md ├── eslint.config.mjs ├── gravity-and-orbits-strings_en.json ├── gravity-and-orbits-tests.html ├── gravity-and-orbits_en.html ├── images ├── iconMass.png ├── iconMass_png.ts ├── license.json ├── pathIcon.png ├── pathIconProjector.png ├── pathIconProjector_png.ts └── pathIcon_png.ts ├── js ├── GravityAndOrbitsStrings.ts ├── common │ ├── GravityAndOrbitsColors.ts │ ├── GravityAndOrbitsConstants.ts │ ├── GravityAndOrbitsScene.ts │ ├── SceneFactory.ts │ ├── model │ │ ├── Body.ts │ │ ├── BodyConfiguration.ts │ │ ├── BodyState.ts │ │ ├── BodyTypeEnum.ts │ │ ├── GravityAndOrbitsClock.ts │ │ ├── GravityAndOrbitsModel.ts │ │ ├── GravityAndOrbitsPhysicsEngine.ts │ │ ├── Interruptable.ts │ │ ├── ModeConfig.ts │ │ ├── ModelState.ts │ │ ├── Pair.ts │ │ ├── RewindableProperty.ts │ │ └── RewindablePropertyTests.ts │ └── view │ │ ├── BodyNode.ts │ │ ├── BodyRenderer.ts │ │ ├── CheckboxPanel.ts │ │ ├── DraggableVectorNode.ts │ │ ├── EarthMassReadoutNode.ts │ │ ├── ExplosionNode.ts │ │ ├── GravityAndOrbitsControls.ts │ │ ├── GravityAndOrbitsSceneView.ts │ │ ├── GravityAndOrbitsScreenView.ts │ │ ├── GravityAndOrbitsTimeControlNode.ts │ │ ├── GravityControl.ts │ │ ├── MassControlPanel.ts │ │ ├── MassReadoutNode.ts │ │ ├── MassSlider.ts │ │ ├── PathsCanvasNode.ts │ │ ├── SceneSelectionControls.ts │ │ ├── SpaceStationMassReadoutNode.ts │ │ ├── TimeCounter.ts │ │ ├── VectorNode.ts │ │ └── ZoomControl.ts ├── gravity-and-orbits-main.ts ├── gravity-and-orbits-phet-io-overrides.js ├── gravity-and-orbits-tests.ts ├── gravityAndOrbits.ts ├── model │ ├── ModelModel.ts │ ├── ModelSceneFactory.ts │ └── ModelScreen.ts └── toScale │ ├── ToScaleModel.ts │ ├── ToScaleSceneFactory.ts │ └── ToScaleScreen.ts ├── mipmaps ├── earth.png ├── earth_png.ts ├── license.json ├── modelIcon.png ├── modelIcon_png.ts ├── moon.png ├── moonGeneric.png ├── moonGeneric_png.ts ├── moon_png.ts ├── planetGeneric.png ├── planetGeneric_png.ts ├── spaceStation.png ├── spaceStation_png.ts ├── sun.png ├── sun_png.ts ├── toScaleIcon.png └── toScaleIcon_png.ts ├── package.json └── tsconfig.json /.gitignore: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/phetsims/gravity-and-orbits/HEAD/.gitignore -------------------------------------------------------------------------------- /Gruntfile.cjs: -------------------------------------------------------------------------------- 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