64 lines
2.1 KiB
Markdown
64 lines
2.1 KiB
Markdown
# orx-view-box
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To create independent views inside one program window.
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<!-- __demos__ -->
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## Demos
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### DemoProxyProgram01
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Demonstrates how to use a proxy program inside a [viewBox],
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how the main program can access its variables and methods,
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and execute its `extend` block by calling its `draw()` method.
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[source code](src/jvmDemo/kotlin/DemoProxyProgram01.kt)
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### DemoProxyProgram02
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Demonstrates how to use two proxy programs and
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toggle between them by clicking the mouse.
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programA draws a circle and can be moved by pressing the
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arrow keys.
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programB draws a ring located at the current mouse
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position.
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Note that programA keeps listening to the key events
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even if programB is currently displayed.
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[source code](src/jvmDemo/kotlin/DemoProxyProgram02.kt)
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### DemoUpdate01
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Demonstrates how to create a viewBox with an interactive 2D camera and
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display it multiple times.
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Instead of calling the viewBox's `.draw()` method multiple times,
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we call its `.update()` method once, then draw its `.result`
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repeatedly, in a grid of 4 columns and 4 rows.
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The camera's initial rotation and scaling are specified as a transformation matrix.
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To control the camera use the mouse wheel and buttons on the top-left view.
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[source code](src/jvmDemo/kotlin/DemoUpdate01.kt)
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### DemoViewBox01
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Demonstrates how to draw multiple view boxes. The first two feature
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interactive 2D cameras, the third one uses an Orbital 3D camera.
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All three can be controlled with the mouse wheel and buttons.
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The `shouldDraw` viewBox variable is used to avoid re-rendering the view
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unnecessarily when the camera has not changed.
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[source code](src/jvmDemo/kotlin/DemoViewBox01.kt)
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