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# javascript
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Nick

07/09/2022, 5:20 AM
Doodle 0.8.0 Released 3D Transforms Views can now have full 3D transformations via their
transform
property. This works because
AffineTransform
has been updated to support scale, rotation, and translations that involve x, y and z axes. The result is that Views can now be placed in a full 3D space by simply giving them a transform that has been modified accordingly.
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import io.nacular.doodle.drawing.AffineTransform.Companion.Identity
import io.nacular.measured.units.Angle.Companion.degrees

// Rotate this View around they y-axis (through its center) by 45°
view.transform *= Identity.rotateY(around = view.center, by = 45 * degrees)
Views can also now render in 3D, since
Canvas
also supports the new 3D transforms.
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view {
    render = {
        transform(Identity.rotateY(by = 45 * degrees)) {
            // ...
        }
    }
}
3D Perspective A realistic 3D space requires more than just affine transforms (which keep parallel lines parallel). Simulating this requires perspective transforms. Views now have a
camera
property, which gives them a perspective when combined with a 3D transform. The following allows the y-axis rotation to look more realistic.
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import io.nacular.doodle.drawing.AffineTransform.Companion.Identity
import io.nacular.measured.units.Angle.Companion.degrees

// Rotate this View around they y-axis (through its center) by 45°
view.transform *= Identity.rotateY(around = view.center, by = 45 * degrees)

// Position the View's camera to apply some realistic perspective warping
view.camera = Camera(position = view.center, distance = 1000.0)
Canvas also takes a
Camera
in its
transform
method to enable perspective.
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view {
    render = {
        transform(Identity.rotateY(by = 45 * degrees), camera = Camera(Origin, distance = 1000.0)) {
            // ...
        }
    }
}
Kotlin 1.7 Support Doodle now supports 1.7.10!! https://github.com/nacular/doodle/releases/tag/v0.8.0
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