kotlin-cesium-engine/cesium.engine/PerspectiveOffCenterFrustum

PerspectiveOffCenterFrustum

open 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
});

Constructors

constructor()

Properties

bottom

external var bottom: Double?

Defines the bottom clipping plane.

far

external var far: Double

The distance of the far plane.

infiniteProjectionMatrix

external val infiniteProjectionMatrix: Matrix4

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

left

external var left: Double?

Defines the left clipping plane.

near

external var near: Double

The distance of the near plane.

projectionMatrix

external 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.

right

external var right: Double?

Defines the right clipping plane.

top

external var top: Double?

Defines the top clipping plane.

Functions

clone

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

Returns a duplicate of a PerspectiveOffCenterFrustum instance.

computeCullingVolume

external fun computeCullingVolume(position: Cartesian3, direction: Cartesian3, up: Cartesian3): CullingVolume

Creates a culling volume for this frustum.

equalsEpsilon

external 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.

getPixelDimensions

external fun getPixelDimensions(drawingBufferWidth: Double, drawingBufferHeight: Double, distance: Double, pixelRatio: Double, result: Cartesian2): Cartesian2

Returns the pixel's width and height in meters.

PerspectiveOffCenterFrustum

See also

Constructors

Properties

Functions