PerspectiveFrustum
The viewing frustum is defined by 6 planes. Each plane is represented by a Cartesian4 object, where the x, y, and z components define the unit vector normal to the plane, and the w component is the distance of the plane from the origin/camera position.
const frustum = new PerspectiveFrustum({
fov : Math.PI_OVER_THREE,
aspectRatio : canvas.clientWidth / canvas.clientHeight
near : 1.0,
far : 1000.0
});
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See also
Properties
Functions
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Returns a duplicate of a PerspectiveFrustum instance.
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fun computeCullingVolume(position: Cartesian3, direction: Cartesian3, up: Cartesian3): CullingVolume
Creates a culling volume for this frustum.
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fun equalsEpsilon(other: PerspectiveFrustum, relativeEpsilon: Double, absoluteEpsilon: Double? = definedExternally): Boolean
Compares the provided PerspectiveFrustum componentwise and returns true
if they pass an absolute or relative tolerance test, false
otherwise.
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fun getPixelDimensions(drawingBufferWidth: Double, drawingBufferHeight: Double, distance: Double, pixelRatio: Double, result: Cartesian2): Cartesian2
Returns the pixel's width and height in meters.