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Direktori : /home/opti/workflow/src/public/app-assets/vendors/js/charts/echarts/zrender/tool/ |
Current File : /home/opti/workflow/src/public/app-assets/vendors/js/charts/echarts/zrender/tool/path.js |
define(function (require) { var Path = require('../graphic/Path'); var PathProxy = require('../core/PathProxy'); var transformPath = require('./transformPath'); var matrix = require('../core/matrix'); // command chars var cc = [ 'm', 'M', 'l', 'L', 'v', 'V', 'h', 'H', 'z', 'Z', 'c', 'C', 'q', 'Q', 't', 'T', 's', 'S', 'a', 'A' ]; var mathSqrt = Math.sqrt; var mathSin = Math.sin; var mathCos = Math.cos; var PI = Math.PI; var vMag = function(v) { return Math.sqrt(v[0] * v[0] + v[1] * v[1]); }; var vRatio = function(u, v) { return (u[0] * v[0] + u[1] * v[1]) / (vMag(u) * vMag(v)); }; var vAngle = function(u, v) { return (u[0] * v[1] < u[1] * v[0] ? -1 : 1) * Math.acos(vRatio(u, v)); }; function processArc(x1, y1, x2, y2, fa, fs, rx, ry, psiDeg, cmd, path) { var psi = psiDeg * (PI / 180.0); var xp = mathCos(psi) * (x1 - x2) / 2.0 + mathSin(psi) * (y1 - y2) / 2.0; var yp = -1 * mathSin(psi) * (x1 - x2) / 2.0 + mathCos(psi) * (y1 - y2) / 2.0; var lambda = (xp * xp) / (rx * rx) + (yp * yp) / (ry * ry); if (lambda > 1) { rx *= mathSqrt(lambda); ry *= mathSqrt(lambda); } var f = (fa === fs ? -1 : 1) * mathSqrt((((rx * rx) * (ry * ry)) - ((rx * rx) * (yp * yp)) - ((ry * ry) * (xp * xp))) / ((rx * rx) * (yp * yp) + (ry * ry) * (xp * xp)) ) || 0; var cxp = f * rx * yp / ry; var cyp = f * -ry * xp / rx; var cx = (x1 + x2) / 2.0 + mathCos(psi) * cxp - mathSin(psi) * cyp; var cy = (y1 + y2) / 2.0 + mathSin(psi) * cxp + mathCos(psi) * cyp; var theta = vAngle([ 1, 0 ], [ (xp - cxp) / rx, (yp - cyp) / ry ]); var u = [ (xp - cxp) / rx, (yp - cyp) / ry ]; var v = [ (-1 * xp - cxp) / rx, (-1 * yp - cyp) / ry ]; var dTheta = vAngle(u, v); if (vRatio(u, v) <= -1) { dTheta = PI; } if (vRatio(u, v) >= 1) { dTheta = 0; } if (fs === 0 && dTheta > 0) { dTheta = dTheta - 2 * PI; } if (fs === 1 && dTheta < 0) { dTheta = dTheta + 2 * PI; } path.addData(cmd, cx, cy, rx, ry, theta, dTheta, psi, fs); } function createPathProxyFromString(data) { if (!data) { return []; } // command string var cs = data.replace(/-/g, ' -') .replace(/ /g, ' ') .replace(/ /g, ',') .replace(/,,/g, ','); var n; // create pipes so that we can split the data for (n = 0; n < cc.length; n++) { cs = cs.replace(new RegExp(cc[n], 'g'), '|' + cc[n]); } // create array var arr = cs.split('|'); // init context point var cpx = 0; var cpy = 0; var path = new PathProxy(); var CMD = PathProxy.CMD; var prevCmd; for (n = 1; n < arr.length; n++) { var str = arr[n]; var c = str.charAt(0); var off = 0; var p = str.slice(1).replace(/e,-/g, 'e-').split(','); var cmd; if (p.length > 0 && p[0] === '') { p.shift(); } for (var i = 0; i < p.length; i++) { p[i] = parseFloat(p[i]); } while (off < p.length && !isNaN(p[off])) { if (isNaN(p[0])) { break; } var ctlPtx; var ctlPty; var rx; var ry; var psi; var fa; var fs; var x1 = cpx; var y1 = cpy; // convert l, H, h, V, and v to L switch (c) { case 'l': cpx += p[off++]; cpy += p[off++]; cmd = CMD.L; path.addData(cmd, cpx, cpy); break; case 'L': cpx = p[off++]; cpy = p[off++]; cmd = CMD.L; path.addData(cmd, cpx, cpy); break; case 'm': cpx += p[off++]; cpy += p[off++]; cmd = CMD.M; path.addData(cmd, cpx, cpy); c = 'l'; break; case 'M': cpx = p[off++]; cpy = p[off++]; cmd = CMD.M; path.addData(cmd, cpx, cpy); c = 'L'; break; case 'h': cpx += p[off++]; cmd = CMD.L; path.addData(cmd, cpx, cpy); break; case 'H': cpx = p[off++]; cmd = CMD.L; path.addData(cmd, cpx, cpy); break; case 'v': cpy += p[off++]; cmd = CMD.L; path.addData(cmd, cpx, cpy); break; case 'V': cpy = p[off++]; cmd = CMD.L; path.addData(cmd, cpx, cpy); break; case 'C': cmd = CMD.C; path.addData( cmd, p[off++], p[off++], p[off++], p[off++], p[off++], p[off++] ); cpx = p[off - 2]; cpy = p[off - 1]; break; case 'c': cmd = CMD.C; path.addData( cmd, p[off++] + cpx, p[off++] + cpy, p[off++] + cpx, p[off++] + cpy, p[off++] + cpx, p[off++] + cpy ); cpx += p[off - 2]; cpy += p[off - 1]; break; case 'S': ctlPtx = cpx; ctlPty = cpy; var len = path.len(); var pathData = path.data; if (prevCmd === CMD.C) { ctlPtx += cpx - pathData[len - 4]; ctlPty += cpy - pathData[len - 3]; } cmd = CMD.C; x1 = p[off++]; y1 = p[off++]; cpx = p[off++]; cpy = p[off++]; path.addData(cmd, ctlPtx, ctlPty, x1, y1, cpx, cpy); break; case 's': ctlPtx = cpx; ctlPty = cpy; var len = path.len(); var pathData = path.data; if (prevCmd === CMD.C) { ctlPtx += cpx - pathData[len - 4]; ctlPty += cpy - pathData[len - 3]; } cmd = CMD.C; x1 = cpx + p[off++]; y1 = cpy + p[off++]; cpx += p[off++]; cpy += p[off++]; path.addData(cmd, ctlPtx, ctlPty, x1, y1, cpx, cpy); break; case 'Q': x1 = p[off++]; y1 = p[off++]; cpx = p[off++]; cpy = p[off++]; cmd = CMD.Q; path.addData(cmd, x1, y1, cpx, cpy); break; case 'q': x1 = p[off++] + cpx; y1 = p[off++] + cpy; cpx += p[off++]; cpy += p[off++]; cmd = CMD.Q; path.addData(cmd, x1, y1, cpx, cpy); break; case 'T': ctlPtx = cpx; ctlPty = cpy; var len = path.len(); var pathData = path.data; if (prevCmd === CMD.Q) { ctlPtx += cpx - pathData[len - 4]; ctlPty += cpy - pathData[len - 3]; } cpx = p[off++]; cpy = p[off++]; cmd = CMD.Q; path.addData(cmd, ctlPtx, ctlPty, cpx, cpy); break; case 't': ctlPtx = cpx; ctlPty = cpy; var len = path.len(); var pathData = path.data; if (prevCmd === CMD.Q) { ctlPtx += cpx - pathData[len - 4]; ctlPty += cpy - pathData[len - 3]; } cpx += p[off++]; cpy += p[off++]; cmd = CMD.Q; path.addData(cmd, ctlPtx, ctlPty, cpx, cpy); break; case 'A': rx = p[off++]; ry = p[off++]; psi = p[off++]; fa = p[off++]; fs = p[off++]; x1 = cpx, y1 = cpy; cpx = p[off++]; cpy = p[off++]; cmd = CMD.A; processArc( x1, y1, cpx, cpy, fa, fs, rx, ry, psi, cmd, path ); break; case 'a': rx = p[off++]; ry = p[off++]; psi = p[off++]; fa = p[off++]; fs = p[off++]; x1 = cpx, y1 = cpy; cpx += p[off++]; cpy += p[off++]; cmd = CMD.A; processArc( x1, y1, cpx, cpy, fa, fs, rx, ry, psi, cmd, path ); break; } } if (c === 'z' || c === 'Z') { cmd = CMD.Z; path.addData(cmd); } prevCmd = cmd; } path.toStatic(); return path; } // TODO Optimize double memory cost problem function createPathOptions(str, opts) { var pathProxy = createPathProxyFromString(str); var transform; opts = opts || {}; opts.buildPath = function (path) { path.setData(pathProxy.data); transform && transformPath(path, transform); // Svg and vml renderer don't have context var ctx = path.getContext(); if (ctx) { path.rebuildPath(ctx); } }; opts.applyTransform = function (m) { if (!transform) { transform = matrix.create(); } matrix.mul(transform, m, transform); }; return opts; } return { /** * Create a Path object from path string data * http://www.w3.org/TR/SVG/paths.html#PathData * @param {Object} opts Other options */ createFromString: function (str, opts) { return new Path(createPathOptions(str, opts)); }, /** * Create a Path class from path string data * @param {string} str * @param {Object} opts Other options */ extendFromString: function (str, opts) { return Path.extend(createPathOptions(str, opts)); }, /** * Merge multiple paths */ // TODO Apply transform // TODO stroke dash // TODO Optimize double memory cost problem mergePath: function (pathEls, opts) { var pathList = []; var len = pathEls.length; var pathEl; var i; for (i = 0; i < len; i++) { pathEl = pathEls[i]; if (pathEl.__dirty) { pathEl.buildPath(pathEl.path, pathEl.shape); } pathList.push(pathEl.path); } var pathBundle = new Path(opts); pathBundle.buildPath = function (path) { path.appendPath(pathList); // Svg and vml renderer don't have context var ctx = path.getContext(); if (ctx) { path.rebuildPath(ctx); } }; return pathBundle; } }; });