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Diffstat (limited to 'contexts/data/lib/closure-library/closure/goog/graphics/affinetransform.js')
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diff --git a/contexts/data/lib/closure-library/closure/goog/graphics/affinetransform.js b/contexts/data/lib/closure-library/closure/goog/graphics/affinetransform.js deleted file mode 100644 index e9ccc00..0000000 --- a/contexts/data/lib/closure-library/closure/goog/graphics/affinetransform.js +++ /dev/null @@ -1,587 +0,0 @@ -// Copyright 2008 The Closure Library Authors. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS-IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - - -/** - * @fileoverview Provides an object representation of an AffineTransform and - * methods for working with it. - */ - - -goog.provide('goog.graphics.AffineTransform'); - -goog.require('goog.math'); - - - -/** - * Creates a 2D affine transform. An affine transform performs a linear - * mapping from 2D coordinates to other 2D coordinates that preserves the - * "straightness" and "parallelness" of lines. - * - * Such a coordinate transformation can be represented by a 3 row by 3 column - * matrix with an implied last row of [ 0 0 1 ]. This matrix transforms source - * coordinates (x,y) into destination coordinates (x',y') by considering them - * to be a column vector and multiplying the coordinate vector by the matrix - * according to the following process: - * <pre> - * [ x'] [ m00 m01 m02 ] [ x ] [ m00x + m01y + m02 ] - * [ y'] = [ m10 m11 m12 ] [ y ] = [ m10x + m11y + m12 ] - * [ 1 ] [ 0 0 1 ] [ 1 ] [ 1 ] - * </pre> - * - * This class is optimized for speed and minimizes calculations based on its - * knowledge of the underlying matrix (as opposed to say simply performing - * matrix multiplication). - * - * @param {number=} opt_m00 The m00 coordinate of the transform. - * @param {number=} opt_m10 The m10 coordinate of the transform. - * @param {number=} opt_m01 The m01 coordinate of the transform. - * @param {number=} opt_m11 The m11 coordinate of the transform. - * @param {number=} opt_m02 The m02 coordinate of the transform. - * @param {number=} opt_m12 The m12 coordinate of the transform. - * @constructor - */ -goog.graphics.AffineTransform = function(opt_m00, opt_m10, opt_m01, - opt_m11, opt_m02, opt_m12) { - if (arguments.length == 6) { - this.setTransform(/** @type {number} */ (opt_m00), - /** @type {number} */ (opt_m10), - /** @type {number} */ (opt_m01), - /** @type {number} */ (opt_m11), - /** @type {number} */ (opt_m02), - /** @type {number} */ (opt_m12)); - } else if (arguments.length != 0) { - throw Error('Insufficient matrix parameters'); - } else { - this.m00_ = this.m11_ = 1; - this.m10_ = this.m01_ = this.m02_ = this.m12_ = 0; - } -}; - - -/** - * @return {boolean} Whether this transform is the identity transform. - */ -goog.graphics.AffineTransform.prototype.isIdentity = function() { - return this.m00_ == 1 && this.m10_ == 0 && this.m01_ == 0 && - this.m11_ == 1 && this.m02_ == 0 && this.m12_ == 0; -}; - - -/** - * @return {!goog.graphics.AffineTransform} A copy of this transform. - */ -goog.graphics.AffineTransform.prototype.clone = function() { - return new goog.graphics.AffineTransform(this.m00_, this.m10_, this.m01_, - this.m11_, this.m02_, this.m12_); -}; - - -/** - * Sets this transform to the matrix specified by the 6 values. - * - * @param {number} m00 The m00 coordinate of the transform. - * @param {number} m10 The m10 coordinate of the transform. - * @param {number} m01 The m01 coordinate of the transform. - * @param {number} m11 The m11 coordinate of the transform. - * @param {number} m02 The m02 coordinate of the transform. - * @param {number} m12 The m12 coordinate of the transform. - * @return {!goog.graphics.AffineTransform} This affine transform. - */ -goog.graphics.AffineTransform.prototype.setTransform = function(m00, m10, m01, - m11, m02, m12) { - if (!goog.isNumber(m00) || !goog.isNumber(m10) || !goog.isNumber(m01) || - !goog.isNumber(m11) || !goog.isNumber(m02) || !goog.isNumber(m12)) { - throw Error('Invalid transform parameters'); - } - this.m00_ = m00; - this.m10_ = m10; - this.m01_ = m01; - this.m11_ = m11; - this.m02_ = m02; - this.m12_ = m12; - return this; -}; - - -/** - * Sets this transform to be identical to the given transform. - * - * @param {!goog.graphics.AffineTransform} tx The transform to copy. - * @return {!goog.graphics.AffineTransform} This affine transform. - */ -goog.graphics.AffineTransform.prototype.copyFrom = function(tx) { - this.m00_ = tx.m00_; - this.m10_ = tx.m10_; - this.m01_ = tx.m01_; - this.m11_ = tx.m11_; - this.m02_ = tx.m02_; - this.m12_ = tx.m12_; - return this; -}; - - -/** - * Concatenates this transform with a scaling transformation. - * - * @param {number} sx The x-axis scaling factor. - * @param {number} sy The y-axis scaling factor. - * @return {!goog.graphics.AffineTransform} This affine transform. - */ -goog.graphics.AffineTransform.prototype.scale = function(sx, sy) { - this.m00_ *= sx; - this.m10_ *= sx; - this.m01_ *= sy; - this.m11_ *= sy; - return this; -}; - - -/** - * Pre-concatenates this transform with a scaling transformation, - * i.e. calculates the following matrix product: - * - * <pre> - * [sx 0 0] [m00 m01 m02] - * [ 0 sy 0] [m10 m11 m12] - * [ 0 0 1] [ 0 0 1] - * </pre> - * - * @param {number} sx The x-axis scaling factor. - * @param {number} sy The y-axis scaling factor. - * @return {!goog.graphics.AffineTransform} This affine transform. - */ -goog.graphics.AffineTransform.prototype.preScale = function(sx, sy) { - this.m00_ *= sx; - this.m01_ *= sx; - this.m02_ *= sx; - this.m10_ *= sy; - this.m11_ *= sy; - this.m12_ *= sy; - return this; -}; - - -/** - * Concatenates this transform with a translate transformation. - * - * @param {number} dx The distance to translate in the x direction. - * @param {number} dy The distance to translate in the y direction. - * @return {!goog.graphics.AffineTransform} This affine transform. - */ -goog.graphics.AffineTransform.prototype.translate = function(dx, dy) { - this.m02_ += dx * this.m00_ + dy * this.m01_; - this.m12_ += dx * this.m10_ + dy * this.m11_; - return this; -}; - - -/** - * Pre-concatenates this transform with a translate transformation, - * i.e. calculates the following matrix product: - * - * <pre> - * [1 0 dx] [m00 m01 m02] - * [0 1 dy] [m10 m11 m12] - * [0 0 1] [ 0 0 1] - * </pre> - * - * @param {number} dx The distance to translate in the x direction. - * @param {number} dy The distance to translate in the y direction. - * @return {!goog.graphics.AffineTransform} This affine transform. - */ -goog.graphics.AffineTransform.prototype.preTranslate = function(dx, dy) { - this.m02_ += dx; - this.m12_ += dy; - return this; -}; - - -/** - * Concatenates this transform with a rotation transformation around an anchor - * point. - * - * @param {number} theta The angle of rotation measured in radians. - * @param {number} x The x coordinate of the anchor point. - * @param {number} y The y coordinate of the anchor point. - * @return {!goog.graphics.AffineTransform} This affine transform. - */ -goog.graphics.AffineTransform.prototype.rotate = function(theta, x, y) { - return this.concatenate( - goog.graphics.AffineTransform.getRotateInstance(theta, x, y)); -}; - - -/** - * Pre-concatenates this transform with a rotation transformation around an - * anchor point. - * - * @param {number} theta The angle of rotation measured in radians. - * @param {number} x The x coordinate of the anchor point. - * @param {number} y The y coordinate of the anchor point. - * @return {!goog.graphics.AffineTransform} This affine transform. - */ -goog.graphics.AffineTransform.prototype.preRotate = function(theta, x, y) { - return this.preConcatenate( - goog.graphics.AffineTransform.getRotateInstance(theta, x, y)); -}; - - -/** - * Concatenates this transform with a shear transformation. - * - * @param {number} shx The x shear factor. - * @param {number} shy The y shear factor. - * @return {!goog.graphics.AffineTransform} This affine transform. - */ -goog.graphics.AffineTransform.prototype.shear = function(shx, shy) { - var m00 = this.m00_; - var m10 = this.m10_; - this.m00_ += shy * this.m01_; - this.m10_ += shy * this.m11_; - this.m01_ += shx * m00; - this.m11_ += shx * m10; - return this; -}; - - -/** - * Pre-concatenates this transform with a shear transformation. - * i.e. calculates the following matrix product: - * - * <pre> - * [ 1 shx 0] [m00 m01 m02] - * [shy 1 0] [m10 m11 m12] - * [ 0 0 1] [ 0 0 1] - * </pre> - * - * @param {number} shx The x shear factor. - * @param {number} shy The y shear factor. - * @return {!goog.graphics.AffineTransform} This affine transform. - */ -goog.graphics.AffineTransform.prototype.preShear = function(shx, shy) { - var m00 = this.m00_; - var m01 = this.m01_; - var m02 = this.m02_; - this.m00_ += shx * this.m10_; - this.m01_ += shx * this.m11_; - this.m02_ += shx * this.m12_; - this.m10_ += shy * m00; - this.m11_ += shy * m01; - this.m12_ += shy * m02; - return this; -}; - - -/** - * @return {string} A string representation of this transform. The format of - * of the string is compatible with SVG matrix notation, i.e. - * "matrix(a,b,c,d,e,f)". - * @override - */ -goog.graphics.AffineTransform.prototype.toString = function() { - return 'matrix(' + - [this.m00_, this.m10_, this.m01_, this.m11_, this.m02_, this.m12_].join( - ',') + - ')'; -}; - - -/** - * @return {number} The scaling factor in the x-direction (m00). - */ -goog.graphics.AffineTransform.prototype.getScaleX = function() { - return this.m00_; -}; - - -/** - * @return {number} The scaling factor in the y-direction (m11). - */ -goog.graphics.AffineTransform.prototype.getScaleY = function() { - return this.m11_; -}; - - -/** - * @return {number} The translation in the x-direction (m02). - */ -goog.graphics.AffineTransform.prototype.getTranslateX = function() { - return this.m02_; -}; - - -/** - * @return {number} The translation in the y-direction (m12). - */ -goog.graphics.AffineTransform.prototype.getTranslateY = function() { - return this.m12_; -}; - - -/** - * @return {number} The shear factor in the x-direction (m01). - */ -goog.graphics.AffineTransform.prototype.getShearX = function() { - return this.m01_; -}; - - -/** - * @return {number} The shear factor in the y-direction (m10). - */ -goog.graphics.AffineTransform.prototype.getShearY = function() { - return this.m10_; -}; - - -/** - * Concatenates an affine transform to this transform. - * - * @param {!goog.graphics.AffineTransform} tx The transform to concatenate. - * @return {!goog.graphics.AffineTransform} This affine transform. - */ -goog.graphics.AffineTransform.prototype.concatenate = function(tx) { - var m0 = this.m00_; - var m1 = this.m01_; - this.m00_ = tx.m00_ * m0 + tx.m10_ * m1; - this.m01_ = tx.m01_ * m0 + tx.m11_ * m1; - this.m02_ += tx.m02_ * m0 + tx.m12_ * m1; - - m0 = this.m10_; - m1 = this.m11_; - this.m10_ = tx.m00_ * m0 + tx.m10_ * m1; - this.m11_ = tx.m01_ * m0 + tx.m11_ * m1; - this.m12_ += tx.m02_ * m0 + tx.m12_ * m1; - return this; -}; - - -/** - * Pre-concatenates an affine transform to this transform. - * - * @param {!goog.graphics.AffineTransform} tx The transform to preconcatenate. - * @return {!goog.graphics.AffineTransform} This affine transform. - */ -goog.graphics.AffineTransform.prototype.preConcatenate = function(tx) { - var m0 = this.m00_; - var m1 = this.m10_; - this.m00_ = tx.m00_ * m0 + tx.m01_ * m1; - this.m10_ = tx.m10_ * m0 + tx.m11_ * m1; - - m0 = this.m01_; - m1 = this.m11_; - this.m01_ = tx.m00_ * m0 + tx.m01_ * m1; - this.m11_ = tx.m10_ * m0 + tx.m11_ * m1; - - m0 = this.m02_; - m1 = this.m12_; - this.m02_ = tx.m00_ * m0 + tx.m01_ * m1 + tx.m02_; - this.m12_ = tx.m10_ * m0 + tx.m11_ * m1 + tx.m12_; - return this; -}; - - -/** - * Transforms an array of coordinates by this transform and stores the result - * into a destination array. - * - * @param {!Array.<number>} src The array containing the source points - * as x, y value pairs. - * @param {number} srcOff The offset to the first point to be transformed. - * @param {!Array.<number>} dst The array into which to store the transformed - * point pairs. - * @param {number} dstOff The offset of the location of the first transformed - * point in the destination array. - * @param {number} numPts The number of points to tranform. - */ -goog.graphics.AffineTransform.prototype.transform = function(src, srcOff, dst, - dstOff, numPts) { - var i = srcOff; - var j = dstOff; - var srcEnd = srcOff + 2 * numPts; - while (i < srcEnd) { - var x = src[i++]; - var y = src[i++]; - dst[j++] = x * this.m00_ + y * this.m01_ + this.m02_; - dst[j++] = x * this.m10_ + y * this.m11_ + this.m12_; - } -}; - - -/** - * @return {number} The determinant of this transform. - */ -goog.graphics.AffineTransform.prototype.getDeterminant = function() { - return this.m00_ * this.m11_ - this.m01_ * this.m10_; -}; - - -/** - * Returns whether the transform is invertible. A transform is not invertible - * if the determinant is 0 or any value is non-finite or NaN. - * - * @return {boolean} Whether the transform is invertible. - */ -goog.graphics.AffineTransform.prototype.isInvertible = function() { - var det = this.getDeterminant(); - return goog.math.isFiniteNumber(det) && - goog.math.isFiniteNumber(this.m02_) && - goog.math.isFiniteNumber(this.m12_) && - det != 0; -}; - - -/** - * @return {!goog.graphics.AffineTransform} An AffineTransform object - * representing the inverse transformation. - */ -goog.graphics.AffineTransform.prototype.createInverse = function() { - var det = this.getDeterminant(); - return new goog.graphics.AffineTransform( - this.m11_ / det, - -this.m10_ / det, - -this.m01_ / det, - this.m00_ / det, - (this.m01_ * this.m12_ - this.m11_ * this.m02_) / det, - (this.m10_ * this.m02_ - this.m00_ * this.m12_) / det); -}; - - -/** - * Creates a transform representing a scaling transformation. - * - * @param {number} sx The x-axis scaling factor. - * @param {number} sy The y-axis scaling factor. - * @return {!goog.graphics.AffineTransform} A transform representing a scaling - * transformation. - */ -goog.graphics.AffineTransform.getScaleInstance = function(sx, sy) { - return new goog.graphics.AffineTransform().setToScale(sx, sy); -}; - - -/** - * Creates a transform representing a translation transformation. - * - * @param {number} dx The distance to translate in the x direction. - * @param {number} dy The distance to translate in the y direction. - * @return {!goog.graphics.AffineTransform} A transform representing a - * translation transformation. - */ -goog.graphics.AffineTransform.getTranslateInstance = function(dx, dy) { - return new goog.graphics.AffineTransform().setToTranslation(dx, dy); -}; - - -/** - * Creates a transform representing a shearing transformation. - * - * @param {number} shx The x-axis shear factor. - * @param {number} shy The y-axis shear factor. - * @return {!goog.graphics.AffineTransform} A transform representing a shearing - * transformation. - */ -goog.graphics.AffineTransform.getShearInstance = function(shx, shy) { - return new goog.graphics.AffineTransform().setToShear(shx, shy); -}; - - -/** - * Creates a transform representing a rotation transformation. - * - * @param {number} theta The angle of rotation measured in radians. - * @param {number} x The x coordinate of the anchor point. - * @param {number} y The y coordinate of the anchor point. - * @return {!goog.graphics.AffineTransform} A transform representing a rotation - * transformation. - */ -goog.graphics.AffineTransform.getRotateInstance = function(theta, x, y) { - return new goog.graphics.AffineTransform().setToRotation(theta, x, y); -}; - - -/** - * Sets this transform to a scaling transformation. - * - * @param {number} sx The x-axis scaling factor. - * @param {number} sy The y-axis scaling factor. - * @return {!goog.graphics.AffineTransform} This affine transform. - */ -goog.graphics.AffineTransform.prototype.setToScale = function(sx, sy) { - return this.setTransform(sx, 0, 0, sy, 0, 0); -}; - - -/** - * Sets this transform to a translation transformation. - * - * @param {number} dx The distance to translate in the x direction. - * @param {number} dy The distance to translate in the y direction. - * @return {!goog.graphics.AffineTransform} This affine transform. - */ -goog.graphics.AffineTransform.prototype.setToTranslation = function(dx, dy) { - return this.setTransform(1, 0, 0, 1, dx, dy); -}; - - -/** - * Sets this transform to a shearing transformation. - * - * @param {number} shx The x-axis shear factor. - * @param {number} shy The y-axis shear factor. - * @return {!goog.graphics.AffineTransform} This affine transform. - */ -goog.graphics.AffineTransform.prototype.setToShear = function(shx, shy) { - return this.setTransform(1, shy, shx, 1, 0, 0); -}; - - -/** - * Sets this transform to a rotation transformation. - * - * @param {number} theta The angle of rotation measured in radians. - * @param {number} x The x coordinate of the anchor point. - * @param {number} y The y coordinate of the anchor point. - * @return {!goog.graphics.AffineTransform} This affine transform. - */ -goog.graphics.AffineTransform.prototype.setToRotation = function(theta, x, y) { - var cos = Math.cos(theta); - var sin = Math.sin(theta); - return this.setTransform(cos, sin, -sin, cos, - x - x * cos + y * sin, y - x * sin - y * cos); -}; - - -/** - * Compares two affine transforms for equality. - * - * @param {goog.graphics.AffineTransform} tx The other affine transform. - * @return {boolean} whether the two transforms are equal. - */ -goog.graphics.AffineTransform.prototype.equals = function(tx) { - if (this == tx) { - return true; - } - if (!tx) { - return false; - } - return this.m00_ == tx.m00_ && - this.m01_ == tx.m01_ && - this.m02_ == tx.m02_ && - this.m10_ == tx.m10_ && - this.m11_ == tx.m11_ && - this.m12_ == tx.m12_; -}; |