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import { num, string, grid } from \"lively.lang\";\n// import { cssLengthToPixels } from \"./convert-css-length.js\";\n\n/* copied from lively.graphics and removed dependency to lively.lang */\n\n\nexport var Point = class Point {\n\n static ensure(duck) {\n return duck instanceof Point ?\n duck : new Point(duck.x, duck.y);\n }\n\n static polar(r, theta) {\n // theta=0 is East on the screen,\n // increases in counter-clockwise direction\n return new Point(r * Math.cos(theta), r * Math.sin(theta));\n }\n\n // static random(scalePt) {\n // return new Point(num.randomSmallerInteger(scalePt.x), num.randomSmallerInteger(scalePt.y));\n // }\n\n static fromLiteral(literal) {\n return pt(literal.x, literal.y);\n }\n\n static fromTuple(tuple) { return pt(tuple[0], tuple[1]); }\n\n constructor(x, y) {\n this.x = x || 0;\n this.y = y || 0;\n }\n\n get isPoint() { return true }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // accessing\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n getX() { return this.x; }\n getY() { return this.y; }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // arithmetic\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n toFixed(val) {\n return new Point(this.x.toFixed(val), this.y.toFixed(val))\n }\n\n addPt(p) {\n return new Point(this.x + p.x, this.y + p.y);\n }\n\n addXY(dx, dy) {\n return new Point(this.x + dx, this.y + dy);\n }\n\n midPt(p) {\n return new Point((this.x + p.x) / 2, (this.y + p.y) / 2);\n }\n\n subPt(p) {\n return new Point(this.x - p.x, this.y - p.y);\n }\n\n subXY(dx, dy) {\n return new Point(this.x - dx, this.y - dy);\n }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // transforming\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n scaleBy(scaleX, scaleYOrUndefined) {\n return new Point(this.x * scaleX, this.y * (scaleYOrUndefined||scaleX));\n }\n\n scaleByPt(scalePt) {\n return new Point(this.x * scalePt.x, this.y * scalePt.y);\n }\n\n negated() {\n return new Point(-this.x, -this.y);\n }\n\n inverted() {\n return new Point(1.0 / this.x, 1.0 / this.y);\n }\n\n invertedSafely() {\n return new Point(this.x && 1.0 / this.x, this.y && 1.0 / this.y);\n }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // comparing\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n lessPt(p) {\n return this.x < p.x && this.y < p.y;\n }\n\n leqPt(p) {\n return this.x <= p.x && this.y <= p.y;\n }\n\n eqPt(p) {\n return this.x == p.x && this.y == p.y;\n }\n\n equals(p) {\n return this.x == p.x && this.y == p.y;\n }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // instance creation\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n\n withX(x) { return pt(x, this.y); }\n\n withY(y) { return pt(this.x, y); }\n\n copy() { return new Point(this.x, this.y); }\n\n minPt(p, acc) {\n if (!acc) acc = new Point(0, 0);\n acc.x = Math.min(this.x, p.x);\n acc.y = Math.min(this.y, p.y);\n return acc;\n }\n\n maxPt(p, acc) {\n if (!acc) acc = new Point(0, 0);\n acc.x = Math.max(this.x, p.x);\n acc.y = Math.max(this.y, p.y);\n return acc;\n }\n\n random() { return Point.random(this); }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // point functions\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n normalized() {\n var r = this.r();\n return pt(this.x / r, this.y / r);\n }\n\n fastNormalized() {\n var r = this.fastR();\n return pt(this.x / r, this.y / r);\n }\n\n dotProduct(p) {\n return this.x * p.x + this.y * p.y\n }\n\n matrixTransform(mx, acc) {\n // if no accumulator passed, allocate a fresh one\n if (!acc) acc = pt(0, 0);\n acc.x = mx.a * this.x + mx.c * this.y + mx.e;\n acc.y = mx.b * this.x + mx.d * this.y + mx.f;\n return acc;\n }\n\n matrixTransformDirection(mx, acc) {\n // if no accumulator passed, allocate a fresh one\n if (!acc) acc = pt(0, 0);\n acc.x = mx.a * this.x + mx.c * this.y;\n acc.y = mx.b * this.x + mx.d * this.y;\n return acc;\n }\n\n // griddedBy(grid) {\n // return pt(this.x - (this.x % grid.x), this.y - (this.y % grid.y))\n // }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // geometry computation\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n\n // roundTo(quantum) {\n // return new Point(num.roundTo(this.x, quantum), num.roundTo(this.y, quantum));\n // }\n\n rounded() {\n return pt(Math.round(this.x), Math.round(this.y))\n }\n\n dist(p) {\n var dx = this.x - p.x,\n dy = this.y - p.y;\n return Math.sqrt(dx * dx + dy * dy);\n }\n\n distSquared(p) {\n var dx = this.x - p.x,\n dy = this.y - p.y;\n return dx * dx + dy * dy;\n }\n\n nearestPointOnLineBetween(p1, p2) {\n if (p1.x == p2.x) return pt(p1.x, this.y);\n if (p1.y == p2.y) return pt(this.x, p1.y);\n var x1 = p1.x,\n y1 = p1.y,\n x21 = p2.x - x1,\n y21 = p2.y - y1,\n t = (((this.y - y1) / x21) + ((this.x - x1) / y21)) / ((x21 / y21) + (y21 / x21));\n return pt(x1 + (t * x21), y1 + (t * y21));\n }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // polar coordinates\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n r() {\n // Polar coordinates (theta=0 is East on screen, and increases in CCW\n // direction\n return Math.sqrt(this.x*this.x + this.y*this.y);\n }\n\n fastR() {\n // actually, r() might be faster...\n var a = this.x * this.x + this.y * this.y;\n var x = 17;\n for (var i = 0; i < 6; i++)\n x = (x + a / x) / 2;\n return x;\n }\n\n theta() { return Math.atan2(this.y, this.x); }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // converting\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n asRectangle() { return new Rectangle(this.x, this.y, 0, 0); }\n\n extent(ext) { return new Rectangle(this.x, this.y, ext.x, ext.y); }\n\n extentAsRectangle() { return new Rectangle(0, 0, this.x, this.y) }\n\n lineTo(end) { return new Line(this, end); }\n\n toTuple() { return [this.x, this.y]; }\n\n toLiteral() { return {x: this.x, y: this.y}; }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // debugging\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n toString() {\n return \"pt(\"+ this.x +\",\" + this.y + \")\"\n // return string.format(\"pt(%1.f,%1.f)\", this.x, this.y);\n }\n\n inspect() { return JSON.stringify(this); }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // serialization\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // __serialize__() {\n // return {__expr__: this.toString(), bindings: {pt: \"lively.graphics/geometry-2d.js\"}}\n // }\n}\n\n\nexport var Rectangle = class Rectangle {\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // factory methods\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n\n static fromAny(ptA, ptB) {\n return rect(ptA.minPt(ptB), ptA.maxPt(ptB));\n }\n\n static fromLiteral(literal) {\n return new Rectangle(literal.x, literal.y, literal.width, literal.height);\n }\n\n static fromTuple(tuple) {\n return new Rectangle(tuple[0], tuple[1], tuple[2], tuple[3]);\n }\n\n static unionPts(points) {\n var min = points[0],\n max = points[0];\n\n // starts from 1 intentionally\n for (var i = 1; i < points.length; i++) {\n min = min.minPt(points[i]);\n max = max.maxPt(points[i]);\n }\n\n return rect(min, max);\n }\n\n static ensure(duck) {\n return duck instanceof Rectangle ?\n duck : new Rectangle(duck.x, duck.y, duck.width, duck.height);\n }\n\n // static fromElement(element) {\n // // FIXME\n // if (Object.isFunction(element.getBoundingClientRect)) {\n // var b = element.getBoundingClientRect();\n // return rect(b.left, b.top, b.width, b.height);\n // } else if (element.namespaceURI == \"http://www.w3.org/1999/xhtml\") {\n // var x = cssLengthToPixels(element.style.left || \"0px\"),\n // y = cssLengthToPixels(element.style.top || \"0px\"),\n // width = cssLengthToPixels(element.style.width || \"0px\"),\n // height = cssLengthToPixels(element.style.hieght || \"0px\");\n // return new Rectangle(x, y, width, height);\n // }\n // if (element.namespaceURI == \"http://www.w3.org/2000/svg\") {\n // return new Rectangle(element.x.baseVal.value, element.y.baseVal.value,\n // element.width.baseVal.value, element.height.baseVal.value);\n // }\n // throw new Error('Cannot create Rectangle from ' + element);\n // }\n\n static inset(left, top, right, bottom) {\n if (top === undefined) top = left;\n if (right === undefined) right = left;\n if (bottom === undefined) bottom = top;\n return new Rectangle(left, top, right - left, bottom - top);\n }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // initialize\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n get corners() { return [\"topLeft\",\"topRight\",\"bottomRight\",\"bottomLeft\"]; }\n get sides() { return [\"leftCenter\",\"rightCenter\",\"topCenter\",\"bottomCenter\"]; }\n\n constructor(x, y, w, h) {\n this.x = x || 0;\n this.y = y || 0;\n this.width = w || 0;\n this.height = h || 0;\n }\n\n get isRectangle() { return true }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // accessing\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n getX() { return this.x; }\n getY() { return this.y; }\n getWidth() { return this.width; }\n getHeight() { return this.height; }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // instance creation\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n copy() {\n return new Rectangle(this.x, this.y, this.width, this.height);\n }\n\n toFixed(val) {\n return new Rectangle(this.x.toFixed(val), this.y.toFixed(val), this.width.toFixed(val), this.height.toFixed(val));\n }\n\n withWidth(w) {\n return new Rectangle(this.x, this.y, w, this.height)\n }\n\n withHeight(h) {\n return new Rectangle(this.x, this.y, this.width, h)\n }\n\n withX(x) {\n return new Rectangle(x, this.y, this.width, this.height)\n }\n\n withY(y) {\n return new Rectangle(this.x, y, this.width, this.height)\n }\n\n withExtent(ext) {\n return new Rectangle(this.x, this.y, ext.x, ext.y);\n }\n\n withTopLeft(p) {\n return Rectangle.fromAny(p, this.bottomRight())\n }\n\n withTopRight(p) {\n return Rectangle.fromAny(p, this.bottomLeft())\n }\n\n withBottomRight(p) {\n return Rectangle.fromAny(p, this.topLeft())\n }\n\n withBottomLeft(p) {\n return Rectangle.fromAny(p, this.topRight())\n }\n\n withLeftCenter(p) {\n return new Rectangle(p.x, this.y, this.width + (this.x - p.x), this.height)\n }\n\n withRightCenter(p) {\n return new Rectangle(this.x, this.y, p.x - this.x, this.height)\n }\n\n withTopCenter(p) {\n return new Rectangle(this.x, p.y, this.width, this.height + (this.y - p.y))\n }\n\n withBottomCenter(p) {\n return new Rectangle(this.x, this.y, this.width, p.y - this.y)\n }\n\n withCenter(p) {\n return new Rectangle(p.x-this.width/2,p.y-this.height/2,this.width,this.height);\n }\n\n insetBy(d) {\n return new Rectangle(this.x + d, this.y + d, this.width - (d * 2), this.height - (d * 2));\n }\n\n insetByPt(p) {\n return new Rectangle(this.x + p.x, this.y + p.y, this.width - (p.x * 2), this.height - (p.y * 2));\n }\n\n // grid(rows, cols) {\n // var w = this.width / cols, h = this.height / rows;\n // return grid.mapCreate(rows, cols, function(i, j) {\n // return new Rectangle(w*j, h*i, w, h); });\n // }\n\n divide(relativeRects) {\n // takes an array of rectangles specifying the relative parts to divide\n // this by. Example:\n // rect(0,0,100,50).divide([rect(0.2,0,0.3,0.5)])\n // === [rect(20,0,30,25)]\n var orig = this;\n return relativeRects.map(function(relRect) {\n return rect(orig.x + orig.width*relRect.x,\n orig.y + orig.height*relRect.y,\n orig.width*relRect.width,\n orig.height*relRect.height); });\n }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // converting\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n toTuple() {\n return [this.x, this.y, this.width, this.height];\n }\n\n lineTo(otherRect) {\n var center1 = this.center(),\n center2 = otherRect.center(),\n lineBetween = center1.lineTo(center2),\n start = this.lineIntersection(lineBetween)[0],\n end = otherRect.lineIntersection(lineBetween)[0];\n return start && end && start.lineTo(end);\n }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // comparing\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n equals(other) {\n if (!other) {\n return false;\n }\n return this.x == other.x && this.y == other.y && this.width == other.width && this.height == other.height;\n }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // debugging\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n inspect() { return JSON.stringify(this); }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // accessing\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n topLeft() {\n return new Point(this.x, this.y)\n }\n\n topRight() {\n return new Point(this.maxX(), this.y)\n }\n\n bottomRight() {\n return new Point(this.maxX(), this.maxY())\n }\n\n bottomLeft() {\n return new Point(this.x, this.maxY())\n }\n\n leftCenter() {\n return new Point(this.x, this.center().y)\n }\n\n rightCenter() {\n return new Point(this.maxX(), this.center().y)\n }\n\n topCenter() {\n return new Point(this.center().x, this.y)\n }\n\n bottomCenter() {\n return new Point(this.center().x, this.maxY())\n }\n\n extent() {\n return new Point(this.width, this.height);\n }\n\n center() {\n return new Point(this.x + (this.width / 2), this.y + (this.height / 2))\n }\n\n topEdge() { return new Line(this.topLeft(), this.topRight()); }\n\n bottomEdge() { return new Line(this.bottomLeft(), this.bottomRight()); }\n\n leftEdge() { return new Line(this.topLeft(), this.bottomLeft()); }\n\n rightEdge() { return new Line(this.topRight(), this.bottomRight()); }\n\n edges() {\n return [this.topEdge(),\n this.rightEdge(),\n this.bottomEdge(),\n this.leftEdge()];\n }\n\n allPoints() {\n // take rectangle as discrete grid and return all points in the grid\n // rect(3,4,2,3).allPoints() == [pt(3,4),pt(4,4),pt(3,5),pt(4,5),pt(3,6),pt(4,6)]\n // if you want to convert points to indices use\n // var w = 5, h = 7; rect(3,4,2,3).allPoints().map(function(p) { return p.y * w + p.x; }) == [23,24,28,29,33,34]\n var x = this.x, y = this.y, w = this.width, h = this.height, points = [];\n for (var j = y; j < y+h; j++)\n for (var i = x; i < x+w; i++)\n points.push(pt(i,j));\n return points;\n }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // testing\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n isNonEmpty(rect) {\n return this.width > 0 && this.height > 0;\n }\n\n containsRect(r) {\n return this.x <= r.x && this.y <= r.y && r.maxX() <= this.maxX() && r.maxY() <= this.maxY();\n }\n\n intersects(r) {\n return this.intersection(r).isNonEmpty();\n }\n\n containsPoint(p) {\n return this.x <= p.x && p.x <= this.x + this.width && this.y <= p.y && p.y <= this.y + this.height;\n }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // transforming\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n translatedBy(d) {\n return new Rectangle(this.x + d.x, this.y + d.y, this.width, this.height);\n }\n\n scaleByRect(r) {\n // r is a relative rect, as a pane spec in a window\n return new Rectangle(\n this.x + (r.x * this.width), this.y + (r.y * this.height), r.width * this.width, r.height * this.height);\n }\n\n scaleRectIn(fullRect) {\n // return a relative rect for this as a part of fullRect\n return new Rectangle((this.x - fullRect.x) / fullRect.width, (this.y - fullRect.y) / fullRect.height, this.width / fullRect.width, this.height / fullRect.height);\n }\n \n scaleRectTo(fullRect) {\n // scale the rect until it reaches the bounds of the full rect\n var height, width, scale;\n if (this.width > this.height) {\n width = this.width;\n } else {\n height = this.height;\n }\n \n if (width) {\n scale = fullRect.width / width\n } else {\n scale = fullRect.height / height;\n }\n \n return this.withExtent(this.extent().scaleBy(scale))\n .withCenter(this.center());\n }\n\n expandBy(delta) {\n return this.insetBy(0 - delta);\n }\n\n translateForInclusion(other) {\n var x = other.x,\n y = other.y,\n r = x + other.width,\n b = y + other.height;\n if (r > this.right()) x -= r - this.right();\n if (b > this.bottom()) y -= b - this.bottom();\n if (x < this.x) x = this.x;\n if (y < this.y) y = this.y;\n return rect(x,y, other.width, other.height);\n }\n\n transformRectForInclusion(other) {\n var topLeft = this.topLeft().maxPt(other.topLeft()),\n newBottomRight = topLeft.addPt(other.extent()),\n innerBottomRight = this.bottomRight().minPt(newBottomRight);\n return rect(topLeft, innerBottomRight);\n }\n\n insetByRect(r) {\n return new Rectangle(this.x + r.left(), this.y + r.top(), this.width -\n (r.left() + r.right()), this.height - (r.top() + r.bottom()));\n }\n\n outsetByRect(r) {\n return new Rectangle(this.x - r.left(), this.y - r.top(), this.width +\n (r.left() + r.right()), this.height + (r.top() + r.bottom()));\n }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // relations\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n\n intersection(rect) {\n var nx = Math.max(this.x, rect.x);\n var ny = Math.max(this.y, rect.y);\n var nw = Math.min(this.x + this.width, rect.x + rect.width) - nx;\n var nh = Math.min(this.y + this.height, rect.y + rect.height) - ny;\n return new Rectangle(nx, ny, nw, nh);\n }\n\n union(r) {\n return rect(this.topLeft().minPt(r.topLeft()), this.bottomRight().maxPt(r.bottomRight()));\n }\n\n lineIntersection(line) {\n return this.edges()\n .map(function(edge) { return edge.intersection(line); })\n .filter(ea => !!ea);\n }\n\n dist(rect) {\n var p1 = this.closestPointToPt(rect.center());\n var p2 = rect.closestPointToPt(p1);\n return p1.dist(p2);\n }\n\n relativeToAbsPoint(relPt) {\n return new Point(\n this.x + this.width * relPt.x, this.y + this.height * relPt.y)\n }\n\n closestPointToPt(p) {\n // Assume p lies outside me; return a point on my perimeter\n return pt(Math.min(Math.max(this.x, p.x), this.maxX()), Math.min(Math.max(this.y, p.y), this.maxY()));\n }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // properties\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n maxX() {\n return this.x + this.width;\n }\n\n maxY() {\n return this.y + this.height;\n }\n\n realWidth() {\n return this.x < 0 ? -this.x + this.width : this.width\n }\n\n realHeight() {\n return this.y < 0 ? -this.y + this.height : this.height\n }\n\n area() { \n const area = this.width * this.height,\n sign = this.width < 0 && this.height < 0 ? -1 : 1; \n return sign * area;\n }\n\n randomPoint() {\n return Point.random(pt(this.width, this.height)).addPt(this.topLeft());\n }\n\n constrainPt(pt) {\n return pt.maxPt(this.topLeft()).minPt(this.bottomRight());\n }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // SVG interface\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // modeled after the CSS box model: http://www.w3.org/TR/REC-CSS2/box.html\n left() {\n return this.x;\n }\n\n right() {\n return this.maxX();\n }\n\n top() {\n return this.y;\n }\n\n bottom() {\n return this.maxY();\n }\n\n toInsetTuple() {\n return [this.left(), this.top(), this.right(), this.bottom()];\n }\n\n toAttributeValue(d) {\n var d = 0.01,\n result = [this.left()];\n if (this.top() === this.bottom() && this.left() === this.right()) {\n if (this.top() === this.left()) result.push(this.top());\n } else result = result.concat([this.top(), this.right(), this.bottom()]);\n return result.invoke('roundTo', d || 0.01);\n }\n\n toLiteral() {\n return {x: this.x, y: this.y, width: this.width, height: this.height};\n }\n\n // additions to the left,right,bottom,top shorthands, needed for layouting\n centerX() {\n return this.center().x\n }\n\n centerY() {\n return this.center().y\n }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // part support\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n partNamed(partName) {\n return this[partName].call(this);\n }\n\n withPartNamed(partName,newValue) {\n return this[this.setterName(partName)].call(this, newValue);\n }\n\n setterName(partName) {\n return \"with\" + partName[0].toUpperCase() + partName.slice(1);\n }\n\n partNameNear(partNames,p,dist) {\n var partName = this.partNameNearest(partNames,p);\n return (p.dist(this.partNamed(partName)) < dist) ? partName : null;\n }\n\n partNameNearest(partNames, p) {\n var dist = 1.0e99,\n partName = partNames[0];\n\n for (var i=0; i 1) this.a = Math.round(this.a*Math.pow(10,2))/Math.pow(10,2);\n if (this.d > 1) this.d = Math.round(this.d*Math.pow(10,2))/Math.pow(10,2);\n } else {\n this.fromMatrix(translation);\n }\n } else {\n this.a = this.d = 1.0;\n this.b = this.c = this.e = this.f = 0.0;\n }\n }\n\n get isTransform() { return true }\n\n copy() { return new Transform(this); }\n\n fromMatrix(mx) {\n this.a = this.ensureNumber(mx.a);\n this.b = this.ensureNumber(mx.b);\n this.c = this.ensureNumber(mx.c);\n this.d = this.ensureNumber(mx.d);\n this.e = this.ensureNumber(mx.e);\n this.f = this.ensureNumber(mx.f);\n }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // accessing\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n \n // getRotation() { // in degrees\n // // Note the ambiguity with negative scales is resolved by assuming\n // // scale x is positive\n // var r = num.toDegrees(Math.atan2(-this.c, this.a));\n\n // // don't bother with values very close to 0\n // return Math.abs(r) < this.eps ? 0 : r;\n // }\n\n getScale() {\n // Note the ambiguity with negative scales and rotation is resolved by assuming scale x is positive\n var a = this.a, c = this.c, s = Math.sqrt(a * a + c * c);\n\n // don't bother with values very close to 1\n return Math.abs(s - 1) < this.eps ? 1 : s;\n }\n\n getScalePoint() {\n // Note the ambiguity with negative scales and rotation is resolved by\n // assuming scale x is positive\n var a = this.a,\n b = this.b,\n c = this.c,\n d = this.d,\n sx = Math.sqrt(a * a + c * c),\n r = Math.atan2(-c, a), // radians\n // avoid div by 0\n sy = (Math.abs(b) > Math.abs(d)) ? b / Math.sin(r) : d / Math.cos(r);\n return pt(sx, sy);\n }\n\n getTranslation() { return pt(this.e, this.f); }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // testing\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n isTranslation() {\n // as specified in:\n // http://www.w3.org/TR/SVG11/coords.html#InterfaceSVGTransform\n return (this.a==1 && this.b==0 && this.c==0 && this.d==1)\n }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // converting\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n toSVGAttributeValue() {\n var delta = this.getTranslation(),\n attr = \"translate(\" + delta.x + \",\" + delta.y +\")\",\n theta = this.getRotation(),\n sp = this.getScalePoint();\n\n if (theta != 0.0) attr += \" rotate(\" + this.getRotation() +\")\"; // in degrees\n if (sp.x != 1.0 || sp.y != 1.0) attr += \" scale(\" + sp.x + \",\" + sp.y + \")\";\n\n return attr;\n }\n\n toCSSValue(bounds) {\n var attr = '', delta = this.getTranslation();\n\n attr += \"translate(\" + delta.x.toFixed(2) + \"px,\" + delta.y.toFixed(2) +\"px)\";\n\n if (bounds) {\n // FIXME this is to fix the rotation...!\n var offsetX = bounds.width / 2;\n var offsetY = bounds.height / 2;\n attr += \" translate(\" + offsetX.toFixed(2) + \"px,\" + offsetY.toFixed(2) +\"px)\";\n }\n\n var theta = this.getRotation();\n if (theta != 0.0) attr += \" rotate(\"\n + this.getRotation().toFixed(2) +\"deg)\";\n\n if (bounds) {\n // FIXME this is to fix the rotation...!\n var offsetX = bounds.width / 2;\n var offsetY = bounds.height / 2;\n attr += \" translate(\" + (offsetX * -1).toFixed(2) + \"px,\" + (offsetY * -1).toFixed(2) +\"px)\";\n }\n\n var sp = this.getScalePoint();\n if (sp.x != 1.0 || sp.y != 1.0) {\n attr += \" scale(\" + sp.x.toFixed(2) + \",\" + sp.y.toFixed(2) + \")\";\n }\n\n return attr;\n }\n\n toCSSTransformString() {\n var rot = this.getRotation(), scale = this.getScale();\n return `translate(${this.e}px,${this.f}px) rotate(${rot}deg) scale(${scale},${scale})`;\n }\n\n toString() { return this.toCSSTransformString(); }\n\n toMatrix() { return this.copy(); }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // transforming\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n transformPoint(p, acc) { return p.matrixTransform(this, acc); }\n\n transformDirection(p, acc) {\n return p.matrixTransformDirection(this, acc);\n }\n\n matrixTransformForMinMax(pt, minPt, maxPt) {\n var x = this.a * pt.x + this.c * pt.y + this.e,\n y = this.b * pt.x + this.d * pt.y + this.f;\n if (x > maxPt.x) maxPt.x = x;\n if (y > maxPt.y) maxPt.y = y;\n if (x < minPt.x) minPt.x = x;\n if (y < minPt.y) minPt.y = y;\n }\n\n transformRectToRect(r) {\n var minPt = pt(Infinity, Infinity),\n maxPt = pt(-Infinity, -Infinity);\n this.matrixTransformForMinMax(r.topLeft(), minPt, maxPt);\n this.matrixTransformForMinMax(r.bottomRight(), minPt, maxPt);\n if (this.isTranslation()) return rect(minPt, maxPt);\n\n this.matrixTransformForMinMax(r.topRight(), minPt, maxPt);\n this.matrixTransformForMinMax(r.bottomLeft(), minPt, maxPt);\n return rect(minPt, maxPt);\n }\n\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // matrix operations\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n preConcatenate(t) {\n var m = this.matrix_ || this.toMatrix();\n this.a = t.a * m.a + t.c * m.b;\n this.b = t.b * m.a + t.d * m.b;\n this.c = t.a * m.c + t.c * m.d;\n this.d = t.b * m.c + t.d * m.d;\n this.e = t.a * m.e + t.c * m.f + t.e;\n this.f = t.b * m.e + t.d * m.f + t.f;\n this.matrix_ = this.toMatrix();\n return this;\n }\n\n invert() {\n var m = this.copy();\n\n var det = m.a * m.d - m.c * m.b,\n invdet = 1/det;\n\n this.a = m.d * invdet;\n this.b = -m.b * invdet;\n this.c = -m.c * invdet;\n this.d = m.a * invdet;\n this.e = (m.c * m.f - m.e * m.d) * invdet;\n this.f = -(m.a * m.f - m.b * m.e) * invdet;\n\n return this;\n }\n\n inverse() {\n var matrix = this.matrix_ || this.toMatrix();\n var result = new this.constructor(matrix);\n result.invert();\n return result;\n }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // helper\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n ensureNumber(value) {\n // note that if a,b,.. f are not numbers, it's usually a\n // problem, which may crash browsers (like Safari) that don't\n // do good typechecking of SVGMatrix properties\n if (isNaN(value)) { throw new Error('not a number');}\n return value;\n }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // serialization\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // __serialize__() {\n // return {\n // __expr__: `new Transform({a: ${this.a}, b: ${this.b}, c: ${this.c}, d: ${this.d}, e: ${this.e}, f: ${this.f}})`,\n // bindings: {Transform: \"lively.graphics/geometry-2d.js\"}\n // }\n // }\n\n}\n\nexport class Line {\n\n static fromCoords(startX, startY, endX, endY) {\n return new Line(pt(startX, startY), pt(endX, endY));\n }\n\n constructor(start, end) {\n this.start = start;\n this.end = end;\n }\n\n get isLine() { return true }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // accessing\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n sampleN(n) {\n // return n points that are collinear with this and are between\n // this.start and this.end\n n = n || 10;\n var vector = this.end.subPt(this.start),\n stepPt = vector.scaleBy(1/n),\n result = [];\n for (var i = 0; i <= n; i++) {\n result.push(this.start.addPt(stepPt.scaleBy(i)))\n }\n return result;\n }\n\n sample(length) {\n return this.sampleN(this.length() / length);\n }\n\n length() {\n return this.start.dist(this.end);\n }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // testing\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n equals(otherLine) {\n if (!otherLine) return false;\n return this.start.eqPt(otherLine.start) && this.end.eqPt(otherLine.end);\n }\n\n includesPoint(p, unconstrained) {\n // test whether p is collinear with this.start, this.end\n // constrained: p also needs to be on segment between start, end\n var x1 = this.start.x,\n y1 = this.start.y,\n x2 = this.end.x,\n y2 = this.end.y,\n x3 = p.x,\n y3 = p.y,\n collinear = ((x2 - x1) * (y3 - y1)) - ((x3 - x1) * (y2 - y1)) === 0;\n if (unconstrained || !collinear) return collinear;\n var xMin = Math.min(x1, x2),\n yMin = Math.min(y1, y2),\n xMax = Math.max(x1, x2),\n yMax = Math.max(y1, y2);\n return xMin <= x3 && x3 <= xMax && yMin < y3 && y3 <= yMax;\n }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // intersection\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n\n // intersection(otherLine, unconstrained) {\n // // constrained: intersection has to be between start/ends of this and\n // // otherLine\n // // http://en.wikipedia.org/wiki/Line-line_intersection\n // // .. (x1, y1)\n // // .. ..... (x4,y4)\n // // .. ........\n // // (x3,y3) .....X..\n // // ..... ..\n // // .. (x2, y2)\n // var eps = 0.0001,\n // start1 = this.start,\n // end1 = this.end,\n // start2 = otherLine.start,\n // end2 = otherLine.end,\n // x1 = start1.x,\n // y1 = start1.y,\n // x2 = end1.x,\n // y2 = end1.y,\n // x3 = start2.x,\n // y3 = start2.y,\n // x4 = end2.x,\n // y4 = end2.y;\n\n // var x = ((x1*y2-y1*x2)*(x3-x4)-(x1-x2)*(x3*y4-y3*x4)) /\n // ((x1-x2)*(y3-y4)-(y1-y2)*(x3-x4)),\n // y = ((x1*y2-y1*x2)*(y3-y4)-(y1-y2)*(x3*y4-y3*x4)) /\n // ((x1-x2)*(y3-y4)-(y1-y2)*(x3-x4));\n\n // // are lines parallel?\n // if (x === Infinity || y === Infinity) return null;\n\n // if (!unconstrained) {\n // if (!num.between(x, x1, x2, eps)\n // || !num.between(y, y1, y2, eps)\n // || !num.between(x, x3, x4, eps)\n // || !num.between(y, y3, y4, eps)) return null;\n // }\n\n // return pt(x,y);\n // }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // debugging\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n toString() {\n return 'Line((' + this.start.x + ',' + this.start.y +'), ('+ this.end.x+','+this.end.y+'))'\n\n // return string.format('Line((%s,%s), (%s,%s))',\n // this.start.x, this.start.y,\n // this.end.x, this.end.y)\n }\n\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // serialization\n // -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n // __serialize__() {\n // return {\n // __expr__: `Line.fromCoords(${this.start.x}, ${this.start.y}, ${this.end.x}, ${this.end.y})`,\n // bindings: {Line: \"lively.graphics/geometry-2d.js\"}\n // }\n // }\n\n}\n\nexport function rect(arg1, arg2, arg3, arg4) {\n // arg1 and arg2 can be location and corner or\n // arg1/arg2 = location x/y and arg3/arg4 = extent x/y\n var x, y, w, h;\n if (typeof arg1 === 'number') {\n x = arg1, y = arg2, w = arg3, h = arg4\n } else {\n x = arg1.x; y = arg1.y;\n w = arg2.x - x; h = arg2.y - y;\n }\n return new Rectangle(x, y, w, h);\n}\n\nexport function pt(x, y) { return new Point(x, y); }\n"]}