diff options
| -rw-r--r-- | dist/svg.js | 152 | ||||
| -rw-r--r-- | dist/svg.min.js | 4 | ||||
| -rw-r--r-- | playgrounds/matrix/drag.js | 79 | ||||
| -rw-r--r-- | playgrounds/matrix/matrix.html | 47 | ||||
| -rw-r--r-- | playgrounds/matrix/matrix.js | 41 | ||||
| -rw-r--r-- | playgrounds/playground.css | 43 | ||||
| -rw-r--r-- | playgrounds/transforms/transforms.html | 15 | ||||
| -rw-r--r-- | playgrounds/transforms/transforms.js | 54 | ||||
| -rw-r--r-- | spec/SpecRunner.html | 4 | ||||
| -rw-r--r-- | src/helpers.js | 17 | ||||
| -rw-r--r-- | src/matrix.js | 101 | ||||
| -rw-r--r-- | src/sugar.js | 17 | ||||
| -rw-r--r-- | src/transform.js | 15 |
13 files changed, 432 insertions, 157 deletions
diff --git a/dist/svg.js b/dist/svg.js index d90fdbb..e4019f4 100644 --- a/dist/svg.js +++ b/dist/svg.js @@ -6,7 +6,7 @@ * @copyright Wout Fierens <wout@mick-wout.com> * @license MIT * -* BUILT: Fri Mar 02 2018 23:08:28 GMT+1100 (AEDT) +* BUILT: Sat Mar 03 2018 22:06:07 GMT+1100 (AEDT) */; (function(root, factory) { @@ -2232,7 +2232,7 @@ SVG.extend(SVG.FX, { } }) -/* global abcdef, arrayToMatrix, parseMatrix, unitCircle, mag */ +/* global abcdef, arrayToMatrix, parseMatrix, closeEnough */ SVG.Matrix = SVG.invent({ // Initialize @@ -2259,12 +2259,13 @@ SVG.Matrix = SVG.invent({ // Add methods extend: { + // Clones this matrix clone: function () { return new SVG.Matrix(this) }, - // Clone matrix - affine: function (o) { + // Transform a matrix into another matrix by manipulating the space + transform: function (o) { // Get all of the parameters required to form the matrix var flipX = o.flip && (o.flip === 'x' || o.flip === 'both') ? -1 : 1 var flipY = o.flip && (o.flip === 'y' || o.flip === 'both') ? -1 : 1 @@ -2292,6 +2293,9 @@ SVG.Matrix = SVG.invent({ var py = o.position && o.position.length ? o.position[1] : o.py var tx = o.translate && o.translate.length ? o.translate[0] : o.tx || 0 var ty = o.translate && o.translate.length ? o.translate[1] : o.ty || 0 + var rx = o.relative && o.relative.length ? o.relative[0] : o.rx || 0 + var ry = o.relative && o.relative.length ? o.relative[1] : o.ry || 0 + var currentTransform = new SVG.Matrix(this) // Construct the resulting matrix var transformer = new SVG.Matrix() @@ -2301,35 +2305,103 @@ SVG.Matrix = SVG.invent({ .shear(shear) .rotate(theta) .translate(ox, oy) - .translate(tx, ty) - .lmultiply(new SVG.Matrix(this)) + .translate(rx, ry) + .lmultiply(currentTransform) // If we want the origin at a particular place, we force it there if (isFinite(px) && isFinite(py)) { // Figure out where the origin went and the delta to get there - var p = new SVG.Point(ox - tx, oy - ty).transform(transformer) + var p = new SVG.Point(ox - rx, oy - ry).transform(transformer) var dx = px - p.x var dy = py - p.y // Apply another translation transformer = transformer.translate(dx, dy) } + + // We can apply translations after everything else + transformer = transformer.translate(tx, ty) return transformer }, + // Applies a matrix defined by its affine parameters + compose: function (o) { + // Get the parameters + var sx = o.scaleX + var sy = o.scaleY + var lam = o.shear + var theta = o.rotate + var tx = o.translateX + var ty = o.translateY + + // Apply the standard matrix + var result = new SVG.Matrix() + .scale(sx, sy) + .shear(lam) + .rotate(theta) + .translate(tx, ty) + .lmultiply(this) + return result + }, + + // Decomposes this matrix into its affine parameters + decompose: function () { + // Get the parameters from the matrix + var a = this.a + var b = this.b + var c = this.c + var d = this.d + var e = this.e + var f = this.f + + // Figure out if the winding direction is clockwise or counterclockwise + var determinant = a * d - b * c + var ccw = determinant > 0 ? -1 : 1 + + // Since we only shear in x, we can use the x basis to get the x scale + // and the rotation of the resulting matrix + var sx = ccw * Math.sqrt(a * a + b * b) + var theta = 180 / Math.PI * Math.atan2(ccw * b, ccw * a) + + // We can then solve the y basis vector simultaneously to get the other + // two affine parameters directly from these parameters + var lam = (a * c + b * d) / determinant + var sy = ((c * sx) / (lam * a - b)) || ((d * sx) / (lam * b + a)) + + // Construct the decomposition and return it + return { + // Return the affine parameters + scaleX: sx, + scaleY: sy, + shear: lam, + rotate: theta, + translateX: e, + translateY: f, + + // Return the matrix parameters + matrix: this, + a: this.a, + b: this.b, + c: this.c, + d: this.d, + e: this.e, + f: this.f, + } + }, + // Morph one matrix into another morph: function (matrix) { - // store new destination + // Store new destination this.destination = new SVG.Matrix(matrix) return this }, // Get morphed matrix at a given position at: function (pos) { - // make sure a destination is defined + // Make sure a destination is defined if (!this.destination) return this - // calculate morphed matrix at a given position + // Calculate morphed matrix at a given position var matrix = new SVG.Matrix({ a: this.a + (this.destination.a - this.a) * pos, b: this.b + (this.destination.b - this.b) * pos, @@ -2416,7 +2488,7 @@ SVG.Matrix = SVG.invent({ // Shear matrix shear: function (a, cx, cy) { - var shear = new SVG.Matrix(1, a, 0, 1, 0, 0) + var shear = new SVG.Matrix(1, 0, a, 1, 0, 0) var matrix = this.around(cx, cy, shear) return matrix }, @@ -2475,12 +2547,9 @@ SVG.Matrix = SVG.invent({ // Check if two matrices are equal equals: function (other) { var comp = parseMatrix(other) - return closeEnough(this.a, comp.a) - && closeEnough(this.b, comp.b) - && closeEnough(this.c, comp.c) - && closeEnough(this.d, comp.d) - && closeEnough(this.e, comp.e) - && closeEnough(this.f, comp.f) + return closeEnough(this.a, comp.a) && closeEnough(this.b, comp.b) && + closeEnough(this.c, comp.c) && closeEnough(this.d, comp.d) && + closeEnough(this.e, comp.e) && closeEnough(this.f, comp.f) }, // Convert matrix to string @@ -2682,8 +2751,9 @@ SVG.extend(SVG.Element, { .reverse() // merge every transformation into one matrix .reduce(function (matrix, transform) { - if (transform[0] === 'matrix') + if (transform[0] === 'matrix') { return matrix.lmultiply(arrayToMatrix(transform[1])) + } return matrix[transform[0]].apply(matrix, transform[1]) }, new SVG.Matrix()) @@ -2716,11 +2786,10 @@ SVG.extend(SVG.Element, { // Act as a getter if no object was passed if (o == null) { - return new SVG.Matrix(this) + return new SVG.Matrix(this).decompose() // Let the user pass in a matrix as well } else if (o.a != null) { - // Construct a matrix from the first parameter var matrix = new SVG.Matrix(o) @@ -2734,8 +2803,9 @@ SVG.extend(SVG.Element, { return this.attr('transform', matrix) // Allow the user to define the origin with a string - } else if (typeof o.origin === 'string' - || (o.origin == null && o.ox == null && o.oy == null)) { + } else if (typeof o.origin === 'string' || + (o.origin == null && o.ox == null && o.oy == null) + ) { // Get the bounding box and string to use in our calculations var string = typeof o.origin === 'string' ? o.origin.toLowerCase().trim() @@ -2758,12 +2828,12 @@ SVG.extend(SVG.Element, { } // The user can pass a boolean, an SVG.Element or an SVG.Matrix or nothing - var result = new SVG.Matrix(cyOrRel === true ? this : cyOrRel).affine(o) + var result = new SVG.Matrix(cyOrRel === true ? this : cyOrRel).transform(o) var matrixString = result.toString() // Apply the result directly to this matrix return this.attr('transform', matrixString) - }, + } }) SVG.extend(SVG.FX, { @@ -4831,6 +4901,10 @@ SVG.extend([SVG.Element, SVG.FX], { : this.transform({skew: [x, y], origin: [cx, cy]}, true) }, + shear: function (lam, cx, cy) { + return this.transform({shear: lam, origin: [cx, cy]}, true) + }, + // Map scale to transform scale: function (x, y, cx, cy) { return arguments.length === 1 || arguments.length === 3 @@ -4843,13 +4917,18 @@ SVG.extend([SVG.Element, SVG.FX], { return this.transform({ translate: [x, y] }, true) }, + // Map relative translations to transform + relative: function (x, y) { + return this.transform({ relative: [x, y] }, true) + }, + // Map flip to transform flip: function (direction, around) { - var origin = (direction === "both" && isFinite(around)) ? [around, around] - : (direction === "x") ? [around, 0] - : (direction === "y") ? [0, around] + var origin = (direction === 'both' && isFinite(around)) ? [around, around] + : (direction === 'x') ? [around, 0] + : (direction === 'y') ? [0, around] : [0, 0] - this.transform({flip: direction || "both", origin: origin}, true) + this.transform({flip: direction || 'both', origin: origin}, true) }, // Opacity @@ -5218,23 +5297,8 @@ function idFromReference (url) { // Create matrix array for looping var abcdef = 'abcdef'.split('') -// Gets the distance of a point (a, b) from the origin -function mag (a, b) { - return Math.sqrt(a * a + b * b) -} - -// Given a coordinate (a, b), this will calculate the sin, cosine and angle -// of this point projected onto the unit circle directly -function unitCircle (a, b) { - var thetaRad = Math.atan2(b, a) - var thetaDeg = thetaRad * 180 / Math.PI - var cos = Math.cos(thetaRad) - var sin = Math.sin(thetaRad) - return {theta: thetaDeg, cos: cos, sin: sin} -} - function closeEnough (a, b, threshold) { - return Math.abs (b - a) < (threshold || 1e-6) + return Math.abs(b - a) < (threshold || 1e-6) } /* globals fullBox, domContains, isNulledBox, Exception */ diff --git a/dist/svg.min.js 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\ No newline at end of file diff --git a/playgrounds/matrix/drag.js b/playgrounds/matrix/drag.js new file mode 100644 index 0000000..636ae30 --- /dev/null +++ b/playgrounds/matrix/drag.js @@ -0,0 +1,79 @@ + +function reactToDrag (element, onDrag, beforeDrag) { + + let xStart, yStart + + let startDrag = event=> { + + // Avoid the default events + event.preventDefault() + + // Store the position where the drag started + xStart = event.pageX + yStart = event.pageY + + // Fire the start drag event + if (beforeDrag) { + var {x, y} = parent.point(event.pageX, event.pageY) + beforeDrag(event, x, y) + } + + // Register events to react to dragging + SVG.on(window, 'mousemove.drag', reactDrag) + SVG.on(window, 'touchmove.drag', reactDrag) + + // Register the events required to finish dragging + SVG.on(window, 'mouseup.drag', stopDrag) + SVG.on(window, 'touchend.drag', stopDrag) + } + + let reactDrag = event=> { + + // Convert screen coordinates to svg coordinates and use them + var {x, y} = parent.point(event.pageX, event.pageY) + if (onDrag) + onDrag(event, x, y) + } + + let stopDrag = event=> { + SVG.off(window, 'mousemove.drag') + SVG.off(window, 'touchmove.drag') + SVG.off(window, 'mouseup.drag') + SVG.off(window, 'touchend.drag') + } + + // Bind the drag tracker to this element directly + let parent = element.doc() + let point = new SVG.Point() + element.mousedown(startDrag).touchstart(startDrag) +} + +SVG.extend(SVG.Element, { + draggable: function (after) { + + let sx, sy + + reactToDrag(this, (e, x, y)=> { + + let matrix = this.transform + this.transform({ + origin: [sx, sy], + position: [x, y], + }) + + if (after) { + after(this, x, y) + } + + }, (e, x, y)=> { + + var toAbsolute = this.transform().inverse() + var p = new SVG.Point(x, y).transform(toAbsolute) + sx = p.x + sy = p.y + + }) + + return this + }, +}) diff --git a/playgrounds/matrix/matrix.html b/playgrounds/matrix/matrix.html new file mode 100644 index 0000000..cd34b7d --- /dev/null +++ b/playgrounds/matrix/matrix.html @@ -0,0 +1,47 @@ + +<!DOCTYPE html> +<html> + + <head> + <meta charset="utf-8"> + <title>SVG Playground</title> + <link rel="stylesheet" href="../playground.css"> + </head> + + <body> + + <h1>SVG Transformations</h1> + + <p> + This playground tests the <code>compose/decompose</code> functionality in + svg matrix, as well as the draggable code and the transformations. + </p> + + <svg viewBox="-200 -200 400 400"> + + <g id="tester"> + <rect class="green" width=50 height=50 /> + <line x2=50 stroke=black stroke-width=1 /> + </g> + + <g id="guess"> + <rect class="dark-pink" width=50 height=50 opacity=0.5 /> + <line x2=50 stroke=black stroke-width=1 /> + </g> + <g id="true"> + <rect class="pink" width=50 height=50 opacity=0.5 /> + <line x2=50 stroke=black stroke-width=1 /> + </g> + <ellipse id="or" class="dark-pink" rx=5 ry=5 /> + <ellipse id="b1" class="pink" cx="50" rx=5 ry=5 /> + <ellipse id="b2" class="green" cy="50" rx=5 ry=5 /> + + </svg> + + </body> + + <script src="../../dist/svg.js" charset="utf-8"></script> + <script src="drag.js" charset="utf-8"></script> + <script src="matrix.js" charset="utf-8"></script> + +</html> diff --git a/playgrounds/matrix/matrix.js b/playgrounds/matrix/matrix.js new file mode 100644 index 0000000..33e21d1 --- /dev/null +++ b/playgrounds/matrix/matrix.js @@ -0,0 +1,41 @@ + +function print (mat) { + let {a, b, c, d} = mat + console.log(` + a: ${a.toFixed(2)} + b: ${b.toFixed(2)} + c: ${c.toFixed(2)} + d: ${d.toFixed(2)} + `) +} + +function moveit () { + + let {cx: x0, cy: y0} = or.rbox(svg) + let {cx: x1, cy: y1} = b1.rbox(svg) + let {cx: x2, cy: y2} = b2.rbox(svg) + + let m = new SVG.Matrix( + (x1 - x0) / 50, (y1 - y0) / 50, (x2 - x0) / 50, (y2 - y0) / 50, x0, y0) + let com = m.decompose() + let g = new SVG.Matrix().compose(com) + + // Transform both of the items + target.transform(m) + mover.transform(g) + + console.log(com); + print(m) + print(g) +} + +// Declare the two points +let svg = SVG('svg') +var or = SVG("#or").draggable(moveit) +var b1 = SVG("#b1").draggable(moveit) +var b2 = SVG("#b2").draggable(moveit) + +// Declare the squares +let target = SVG("#true") +let mover = SVG("#guess") +let tester = SVG("#tester") diff --git a/playgrounds/playground.css b/playgrounds/playground.css index 1808d6a..71fabed 100644 --- a/playgrounds/playground.css +++ b/playgrounds/playground.css @@ -1,24 +1,53 @@ +* { + box-sizing: border-box; +} + html { background-color : #f5f6f7; - text-align: center; + /* text-align: center; */ +} + +body { + margin: 0; + width: 100vw; + height: 99vh; + grid-gap: 30px; + display: inline-grid; + align-items: center; + grid-template-columns: 10vw 40vw auto 10vw; + grid-template-rows: 0 10vw auto 0; } h1 { + text-align: right; + border-right: solid 3px #f06; + padding-right: 12px; color: #f06; - font-size: 6vh; - margin: 4vh; + font-size: 52px; + font-family: Helvetica; + grid-row: 2; + grid-column: 2; + line-height: 1.8em; +} + +p { + padding-right: 50px; + color: #444; + font-size: 18px; font-family: Helvetica; + grid-row: 2; + grid-column: 3; } svg { - width: 70vw; - height: 80vh; + height: 100%; + width: 100%; + grid-row: 3; + grid-column: 2/4; background-color: white; - position: fixed; border-radius: 20px; border: #f065 1px solid; - left: 15vw; } .pink { diff --git a/playgrounds/transforms/transforms.html b/playgrounds/transforms/transforms.html index d206d06..ac60f14 100644 --- a/playgrounds/transforms/transforms.html +++ b/playgrounds/transforms/transforms.html @@ -12,19 +12,12 @@ <h1>SVG JS Playground</h1> - <svg viewBox="0 0 2000 2000"> + <svg viewBox="-200 -200 400 400"> - <!-- <rect id="old" x=200 y=400 width=200 height=400 class="green"/> + <rect id="old" x=200 y=400 width=200 height=400 class="green"/> <rect id="new" x=200 y=400 width=200 height=400 class="pink"/> - <ellipse id="new" cx=800 cy=500 rx=10 ry=10 class="dark-pink"/> --> - <!-- <ellipse cx=0 cy=0 rx=3 ry=3 /> - <ellipse cx=100 cy=0 rx=3 ry=3 /> - <ellipse cx=0 cy=100 rx=3 ry=3 /> - <ellipse cx=100 cy=100 rx=3 ry=3 /> - <ellipse fill=red cx=0 cy=0 rx=3 ry=3 /> - <ellipse fill=red cx=100 cy=0 rx=3 ry=3 /> - <ellipse fill=red cx=0 cy=100 rx=3 ry=3 /> --> - <!-- <ellipse fill=red cx=100 cy=100 rx=3 ry=3 /> --> + <ellipse id="new" cx=800 cy=500 rx=10 ry=10 class="dark-pink"/> + </svg> </body> diff --git a/playgrounds/transforms/transforms.js b/playgrounds/transforms/transforms.js index 76045a3..b27e1c3 100644 --- a/playgrounds/transforms/transforms.js +++ b/playgrounds/transforms/transforms.js @@ -1,51 +1,9 @@ -// let mover = SVG.select("#new")[0] -// mover.transform({ -// // position: [800, 500], -// // origin: [200, 400], -// // skew: [20, 0], -// // rotate: 30, -// }) - -// var draw = SVG.select('svg')[0] -// var rect = draw.rect(100, 100) -// .transform({ -// // rotate: -10, -// translate: [-50, -50], -// // scale: 2 -// }).opacity(0.3) -// -// -// var es = SVG.select('ellipse') - -draw = SVG("svg") - -offset = draw.screenCTM() -draw.viewbox(100,100, 1000, 1000) -nested = draw.nested().size(500, 500).move(100,100).viewbox(0, 0, 400, 400) -rect = nested.rect(50, 50).stroke({width:0}).move(25, 90).scale(2, 0, 0).translate(10, 10).fill("red") - - -var box = rect.rbox() - -console.log(box.x - offset.e, box.y - offset.f); - - -div = document.createElement('div') - -Object.assign(div.style, { - position : 'absolute', - left : box.x + 'px', - top : box.y + 'px', - width : box.width + 'px', - opacity : 0.4, - height : box.height + 'px', - background : 'blue', +let mover = SVG.select("#new")[0] +mover.transform({ + position: [800, 500], + origin: [200, 400], + skew: [20, 0], + rotate: 30, }) - - -document.body.appendChild(div) - -// rect1.toParent(nested).transform() -// rect2.toParent(g2).transform() diff --git a/spec/SpecRunner.html b/spec/SpecRunner.html index 86b60f9..118f7bb 100644 --- a/spec/SpecRunner.html +++ b/spec/SpecRunner.html @@ -67,7 +67,7 @@ <script src="spec/element.js"></script> <script src="spec/ellipse.js"></script> <script src="spec/event.js"></script> - <!-- <script src="spec/fx.js"></script> --> + <script src="spec/fx.js"></script> <script src="spec/gradient.js"></script> <script src="spec/group.js"></script> <script src="spec/helper.js"></script> @@ -92,7 +92,7 @@ <script src="spec/symbol.js"></script> <script src="spec/text.js"></script> <script src="spec/textpath.js"></script> - <!-- <script src="spec/transformations.js"></script> --> + <script src="spec/transformations.js"></script> <script src="spec/tspan.js"></script> <script src="spec/use.js"></script> <script src="spec/utils.js"></script> diff --git a/src/helpers.js b/src/helpers.js index 16e6e4e..5a15bf9 100644 --- a/src/helpers.js +++ b/src/helpers.js @@ -209,21 +209,6 @@ function idFromReference (url) { // Create matrix array for looping var abcdef = 'abcdef'.split('') -// Gets the distance of a point (a, b) from the origin -function mag (a, b) { - return Math.sqrt(a * a + b * b) -} - -// Given a coordinate (a, b), this will calculate the sin, cosine and angle -// of this point projected onto the unit circle directly -function unitCircle (a, b) { - var thetaRad = Math.atan2(b, a) - var thetaDeg = thetaRad * 180 / Math.PI - var cos = Math.cos(thetaRad) - var sin = Math.sin(thetaRad) - return {theta: thetaDeg, cos: cos, sin: sin} -} - function closeEnough (a, b, threshold) { - return Math.abs (b - a) < (threshold || 1e-6) + return Math.abs(b - a) < (threshold || 1e-6) } diff --git a/src/matrix.js b/src/matrix.js index 557010c..ed1485c 100644 --- a/src/matrix.js +++ b/src/matrix.js @@ -1,4 +1,4 @@ -/* global abcdef, arrayToMatrix, parseMatrix, unitCircle, mag */ +/* global abcdef, arrayToMatrix, parseMatrix, closeEnough */ SVG.Matrix = SVG.invent({ // Initialize @@ -25,12 +25,13 @@ SVG.Matrix = SVG.invent({ // Add methods extend: { + // Clones this matrix clone: function () { return new SVG.Matrix(this) }, - // Clone matrix - affine: function (o) { + // Transform a matrix into another matrix by manipulating the space + transform: function (o) { // Get all of the parameters required to form the matrix var flipX = o.flip && (o.flip === 'x' || o.flip === 'both') ? -1 : 1 var flipY = o.flip && (o.flip === 'y' || o.flip === 'both') ? -1 : 1 @@ -58,6 +59,9 @@ SVG.Matrix = SVG.invent({ var py = o.position && o.position.length ? o.position[1] : o.py var tx = o.translate && o.translate.length ? o.translate[0] : o.tx || 0 var ty = o.translate && o.translate.length ? o.translate[1] : o.ty || 0 + var rx = o.relative && o.relative.length ? o.relative[0] : o.rx || 0 + var ry = o.relative && o.relative.length ? o.relative[1] : o.ry || 0 + var currentTransform = new SVG.Matrix(this) // Construct the resulting matrix var transformer = new SVG.Matrix() @@ -67,35 +71,103 @@ SVG.Matrix = SVG.invent({ .shear(shear) .rotate(theta) .translate(ox, oy) - .translate(tx, ty) - .lmultiply(new SVG.Matrix(this)) + .translate(rx, ry) + .lmultiply(currentTransform) // If we want the origin at a particular place, we force it there if (isFinite(px) && isFinite(py)) { // Figure out where the origin went and the delta to get there - var p = new SVG.Point(ox - tx, oy - ty).transform(transformer) + var p = new SVG.Point(ox - rx, oy - ry).transform(transformer) var dx = px - p.x var dy = py - p.y // Apply another translation transformer = transformer.translate(dx, dy) } + + // We can apply translations after everything else + transformer = transformer.translate(tx, ty) return transformer }, + // Applies a matrix defined by its affine parameters + compose: function (o) { + // Get the parameters + var sx = o.scaleX + var sy = o.scaleY + var lam = o.shear + var theta = o.rotate + var tx = o.translateX + var ty = o.translateY + + // Apply the standard matrix + var result = new SVG.Matrix() + .scale(sx, sy) + .shear(lam) + .rotate(theta) + .translate(tx, ty) + .lmultiply(this) + return result + }, + + // Decomposes this matrix into its affine parameters + decompose: function () { + // Get the parameters from the matrix + var a = this.a + var b = this.b + var c = this.c + var d = this.d + var e = this.e + var f = this.f + + // Figure out if the winding direction is clockwise or counterclockwise + var determinant = a * d - b * c + var ccw = determinant > 0 ? -1 : 1 + + // Since we only shear in x, we can use the x basis to get the x scale + // and the rotation of the resulting matrix + var sx = ccw * Math.sqrt(a * a + b * b) + var theta = 180 / Math.PI * Math.atan2(ccw * b, ccw * a) + + // We can then solve the y basis vector simultaneously to get the other + // two affine parameters directly from these parameters + var lam = (a * c + b * d) / determinant + var sy = ((c * sx) / (lam * a - b)) || ((d * sx) / (lam * b + a)) + + // Construct the decomposition and return it + return { + // Return the affine parameters + scaleX: sx, + scaleY: sy, + shear: lam, + rotate: theta, + translateX: e, + translateY: f, + + // Return the matrix parameters + matrix: this, + a: this.a, + b: this.b, + c: this.c, + d: this.d, + e: this.e, + f: this.f, + } + }, + // Morph one matrix into another morph: function (matrix) { - // store new destination + // Store new destination this.destination = new SVG.Matrix(matrix) return this }, // Get morphed matrix at a given position at: function (pos) { - // make sure a destination is defined + // Make sure a destination is defined if (!this.destination) return this - // calculate morphed matrix at a given position + // Calculate morphed matrix at a given position var matrix = new SVG.Matrix({ a: this.a + (this.destination.a - this.a) * pos, b: this.b + (this.destination.b - this.b) * pos, @@ -182,7 +254,7 @@ SVG.Matrix = SVG.invent({ // Shear matrix shear: function (a, cx, cy) { - var shear = new SVG.Matrix(1, a, 0, 1, 0, 0) + var shear = new SVG.Matrix(1, 0, a, 1, 0, 0) var matrix = this.around(cx, cy, shear) return matrix }, @@ -241,12 +313,9 @@ SVG.Matrix = SVG.invent({ // Check if two matrices are equal equals: function (other) { var comp = parseMatrix(other) - return closeEnough(this.a, comp.a) - && closeEnough(this.b, comp.b) - && closeEnough(this.c, comp.c) - && closeEnough(this.d, comp.d) - && closeEnough(this.e, comp.e) - && closeEnough(this.f, comp.f) + return closeEnough(this.a, comp.a) && closeEnough(this.b, comp.b) && + closeEnough(this.c, comp.c) && closeEnough(this.d, comp.d) && + closeEnough(this.e, comp.e) && closeEnough(this.f, comp.f) }, // Convert matrix to string diff --git a/src/sugar.js b/src/sugar.js index 6f81898..b1c6f38 100644 --- a/src/sugar.js +++ b/src/sugar.js @@ -46,6 +46,10 @@ SVG.extend([SVG.Element, SVG.FX], { : this.transform({skew: [x, y], origin: [cx, cy]}, true) }, + shear: function (lam, cx, cy) { + return this.transform({shear: lam, origin: [cx, cy]}, true) + }, + // Map scale to transform scale: function (x, y, cx, cy) { return arguments.length === 1 || arguments.length === 3 @@ -58,13 +62,18 @@ SVG.extend([SVG.Element, SVG.FX], { return this.transform({ translate: [x, y] }, true) }, + // Map relative translations to transform + relative: function (x, y) { + return this.transform({ relative: [x, y] }, true) + }, + // Map flip to transform flip: function (direction, around) { - var origin = (direction === "both" && isFinite(around)) ? [around, around] - : (direction === "x") ? [around, 0] - : (direction === "y") ? [0, around] + var origin = (direction === 'both' && isFinite(around)) ? [around, around] + : (direction === 'x') ? [around, 0] + : (direction === 'y') ? [0, around] : [0, 0] - this.transform({flip: direction || "both", origin: origin}, true) + this.transform({flip: direction || 'both', origin: origin}, true) }, // Opacity diff --git a/src/transform.js b/src/transform.js index fbc75c4..f14917d 100644 --- a/src/transform.js +++ b/src/transform.js @@ -21,8 +21,9 @@ SVG.extend(SVG.Element, { .reverse() // merge every transformation into one matrix .reduce(function (matrix, transform) { - if (transform[0] === 'matrix') + if (transform[0] === 'matrix') { return matrix.lmultiply(arrayToMatrix(transform[1])) + } return matrix[transform[0]].apply(matrix, transform[1]) }, new SVG.Matrix()) @@ -55,11 +56,10 @@ SVG.extend(SVG.Element, { // Act as a getter if no object was passed if (o == null) { - return new SVG.Matrix(this) + return new SVG.Matrix(this).decompose() // Let the user pass in a matrix as well } else if (o.a != null) { - // Construct a matrix from the first parameter var matrix = new SVG.Matrix(o) @@ -73,8 +73,9 @@ SVG.extend(SVG.Element, { return this.attr('transform', matrix) // Allow the user to define the origin with a string - } else if (typeof o.origin === 'string' - || (o.origin == null && o.ox == null && o.oy == null)) { + } else if (typeof o.origin === 'string' || + (o.origin == null && o.ox == null && o.oy == null) + ) { // Get the bounding box and string to use in our calculations var string = typeof o.origin === 'string' ? o.origin.toLowerCase().trim() @@ -97,12 +98,12 @@ SVG.extend(SVG.Element, { } // The user can pass a boolean, an SVG.Element or an SVG.Matrix or nothing - var result = new SVG.Matrix(cyOrRel === true ? this : cyOrRel).affine(o) + var result = new SVG.Matrix(cyOrRel === true ? this : cyOrRel).transform(o) var matrixString = result.toString() // Apply the result directly to this matrix return this.attr('transform', matrixString) - }, + } }) SVG.extend(SVG.FX, { |