kotlin-cesium-engine/cesium.engine/PerspectiveOffCenterFrustum

PerspectiveOffCenterFrustum

external class PerspectiveOffCenterFrustum(source)

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 PerspectiveOffCenterFrustum({
    left : -1.0,
    right : 1.0,
    top : 1.0,
    bottom : -1.0,
    near : 1.0,
    far : 100.0
});
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See also

Constructors

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constructor()

Properties

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var bottom: Double?

Defines the bottom clipping plane.

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var far: Double

The distance of the far plane.

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val infiniteProjectionMatrix: Matrix4

Gets the perspective projection matrix computed from the view frustum with an infinite far plane.

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var left: Double?

Defines the left clipping plane.

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var near: Double

The distance of the near plane.

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val projectionMatrix: Matrix4

Gets the perspective projection matrix computed from the view frustum. The projection matrix will be recomputed if any frustum parameters have changed.

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var right: Double?

Defines the right clipping plane.

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var top: Double?

Defines the top clipping plane.

Functions

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fun clone(result: PerspectiveOffCenterFrustum? = definedExternally): PerspectiveOffCenterFrustum

Returns a duplicate of a PerspectiveOffCenterFrustum 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: PerspectiveOffCenterFrustum, relativeEpsilon: Double, absoluteEpsilon: Double? = definedExternally): Boolean

Compares the provided PerspectiveOffCenterFrustum 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.