ReactAndroid/com.facebook.react.uimanager/MatrixMathHelper

MatrixMathHelper

Provides helper methods for converting transform operations into a matrix and then into a list of translate, scale and rotate commands.

Types

MatrixDecompositionContext

open class MatrixDecompositionContext

Functions

applyPerspective

@JvmStatic

fun applyPerspective(m: DoubleArray, perspective: Double)

applyRotateX

@JvmStatic

fun applyRotateX(m: DoubleArray, radians: Double)

applyRotateY

@JvmStatic

fun applyRotateY(m: DoubleArray, radians: Double)

applyRotateZ

@JvmStatic

fun applyRotateZ(m: DoubleArray, radians: Double)

applyScaleX

@JvmStatic

fun applyScaleX(m: DoubleArray, factor: Double)

applyScaleY

@JvmStatic

fun applyScaleY(m: DoubleArray, factor: Double)

applyScaleZ

fun applyScaleZ(m: DoubleArray, factor: Double)

applySkewX

@JvmStatic

fun applySkewX(m: DoubleArray, radians: Double)

applySkewY

@JvmStatic

fun applySkewY(m: DoubleArray, radians: Double)

applyTranslate2D

@JvmStatic

fun applyTranslate2D(m: DoubleArray, x: Double, y: Double)

applyTranslate3D

@JvmStatic

fun applyTranslate3D(m: DoubleArray, x: Double, y: Double, z: Double)

createIdentityMatrix

@JvmStatic

fun createIdentityMatrix(): DoubleArray

decomposeMatrix

@JvmStatic

fun decomposeMatrix(transformMatrix: DoubleArray, ctx: MatrixMathHelper.MatrixDecompositionContext)

degreesToRadians

@JvmStatic

fun degreesToRadians(degrees: Double): Double

determinant

@JvmStatic

fun determinant(matrix: DoubleArray): Double

inverse

@JvmStatic

fun inverse(matrix: DoubleArray): DoubleArray

Inverse of a matrix. Multiplying by the inverse is used in matrix math instead of division.

multiplyInto

@JvmStatic

fun multiplyInto(out: DoubleArray, a: DoubleArray, b: DoubleArray)

multiplyVectorByMatrix

@JvmStatic

fun multiplyVectorByMatrix(v: DoubleArray, m: DoubleArray, result: DoubleArray)

Based on: http://tog.acm.org/resources/GraphicsGems/gemsii/unmatrix.c

resetIdentityMatrix

@JvmStatic

fun resetIdentityMatrix(matrix: DoubleArray)

roundTo3Places

@JvmStatic

fun roundTo3Places(n: Double): Double

transpose

@JvmStatic

fun transpose(m: DoubleArray): DoubleArray

Turns columns into rows and rows into columns.

v3Combine

@JvmStatic

fun v3Combine(a: DoubleArray, b: DoubleArray, aScale: Double, bScale: Double): DoubleArray

From: http://www.opensource.apple.com/source/WebCore/WebCore-514/platform/graphics/transforms/TransformationMatrix.cpp

v3Cross

@JvmStatic

fun v3Cross(a: DoubleArray, b: DoubleArray): DoubleArray

From: http://www.opensource.apple.com/source/WebCore/WebCore-514/platform/graphics/transforms/TransformationMatrix.cpp

v3Dot

@JvmStatic

fun v3Dot(a: DoubleArray, b: DoubleArray): Double

The dot product of a and b, two 3-element vectors. From: https://code.google.com/p/webgl-mjs/source/browse/mjs.js

v3Length

@JvmStatic

fun v3Length(a: DoubleArray): Double

From: https://code.google.com/p/webgl-mjs/source/browse/mjs.js

v3Normalize

@JvmStatic

fun v3Normalize(vector: DoubleArray, norm: Double): DoubleArray

Based on: https://code.google.com/p/webgl-mjs/source/browse/mjs.js