1 line
32 KiB
JSON
1 line
32 KiB
JSON
{"ast":null,"code":"import PathProxy from '../core/PathProxy.js';\nimport * as line from './line.js';\nimport * as cubic from './cubic.js';\nimport * as quadratic from './quadratic.js';\nimport * as arc from './arc.js';\nimport * as curve from '../core/curve.js';\nimport windingLine from './windingLine.js';\nvar CMD = PathProxy.CMD;\nvar PI2 = Math.PI * 2;\nvar EPSILON = 1e-4;\n\nfunction isAroundEqual(a, b) {\n return Math.abs(a - b) < EPSILON;\n}\n\nvar roots = [-1, -1, -1];\nvar extrema = [-1, -1];\n\nfunction swapExtrema() {\n var tmp = extrema[0];\n extrema[0] = extrema[1];\n extrema[1] = tmp;\n}\n\nfunction windingCubic(x0, y0, x1, y1, x2, y2, x3, y3, x, y) {\n if (y > y0 && y > y1 && y > y2 && y > y3 || y < y0 && y < y1 && y < y2 && y < y3) {\n return 0;\n }\n\n var nRoots = curve.cubicRootAt(y0, y1, y2, y3, y, roots);\n\n if (nRoots === 0) {\n return 0;\n } else {\n var w = 0;\n var nExtrema = -1;\n var y0_ = void 0;\n var y1_ = void 0;\n\n for (var i = 0; i < nRoots; i++) {\n var t = roots[i];\n var unit = t === 0 || t === 1 ? 0.5 : 1;\n var x_ = curve.cubicAt(x0, x1, x2, x3, t);\n\n if (x_ < x) {\n continue;\n }\n\n if (nExtrema < 0) {\n nExtrema = curve.cubicExtrema(y0, y1, y2, y3, extrema);\n\n if (extrema[1] < extrema[0] && nExtrema > 1) {\n swapExtrema();\n }\n\n y0_ = curve.cubicAt(y0, y1, y2, y3, extrema[0]);\n\n if (nExtrema > 1) {\n y1_ = curve.cubicAt(y0, y1, y2, y3, extrema[1]);\n }\n }\n\n if (nExtrema === 2) {\n if (t < extrema[0]) {\n w += y0_ < y0 ? unit : -unit;\n } else if (t < extrema[1]) {\n w += y1_ < y0_ ? unit : -unit;\n } else {\n w += y3 < y1_ ? unit : -unit;\n }\n } else {\n if (t < extrema[0]) {\n w += y0_ < y0 ? unit : -unit;\n } else {\n w += y3 < y0_ ? unit : -unit;\n }\n }\n }\n\n return w;\n }\n}\n\nfunction windingQuadratic(x0, y0, x1, y1, x2, y2, x, y) {\n if (y > y0 && y > y1 && y > y2 || y < y0 && y < y1 && y < y2) {\n return 0;\n }\n\n var nRoots = curve.quadraticRootAt(y0, y1, y2, y, roots);\n\n if (nRoots === 0) {\n return 0;\n } else {\n var t = curve.quadraticExtremum(y0, y1, y2);\n\n if (t >= 0 && t <= 1) {\n var w = 0;\n var y_ = curve.quadraticAt(y0, y1, y2, t);\n\n for (var i = 0; i < nRoots; i++) {\n var unit = roots[i] === 0 || roots[i] === 1 ? 0.5 : 1;\n var x_ = curve.quadraticAt(x0, x1, x2, roots[i]);\n\n if (x_ < x) {\n continue;\n }\n\n if (roots[i] < t) {\n w += y_ < y0 ? unit : -unit;\n } else {\n w += y2 < y_ ? unit : -unit;\n }\n }\n\n return w;\n } else {\n var unit = roots[0] === 0 || roots[0] === 1 ? 0.5 : 1;\n var x_ = curve.quadraticAt(x0, x1, x2, roots[0]);\n\n if (x_ < x) {\n return 0;\n }\n\n return y2 < y0 ? unit : -unit;\n }\n }\n}\n\nfunction windingArc(cx, cy, r, startAngle, endAngle, anticlockwise, x, y) {\n y -= cy;\n\n if (y > r || y < -r) {\n return 0;\n }\n\n var tmp = Math.sqrt(r * r - y * y);\n roots[0] = -tmp;\n roots[1] = tmp;\n var dTheta = Math.abs(startAngle - endAngle);\n\n if (dTheta < 1e-4) {\n return 0;\n }\n\n if (dTheta >= PI2 - 1e-4) {\n startAngle = 0;\n endAngle = PI2;\n var dir = anticlockwise ? 1 : -1;\n\n if (x >= roots[0] + cx && x <= roots[1] + cx) {\n return dir;\n } else {\n return 0;\n }\n }\n\n if (startAngle > endAngle) {\n var tmp_1 = startAngle;\n startAngle = endAngle;\n endAngle = tmp_1;\n }\n\n if (startAngle < 0) {\n startAngle += PI2;\n endAngle += PI2;\n }\n\n var w = 0;\n\n for (var i = 0; i < 2; i++) {\n var x_ = roots[i];\n\n if (x_ + cx > x) {\n var angle = Math.atan2(y, x_);\n var dir = anticlockwise ? 1 : -1;\n\n if (angle < 0) {\n angle = PI2 + angle;\n }\n\n if (angle >= startAngle && angle <= endAngle || angle + PI2 >= startAngle && angle + PI2 <= endAngle) {\n if (angle > Math.PI / 2 && angle < Math.PI * 1.5) {\n dir = -dir;\n }\n\n w += dir;\n }\n }\n }\n\n return w;\n}\n\nfunction containPath(path, lineWidth, isStroke, x, y) {\n var data = path.data;\n var len = path.len();\n var w = 0;\n var xi = 0;\n var yi = 0;\n var x0 = 0;\n var y0 = 0;\n var x1;\n var y1;\n\n for (var i = 0; i < len;) {\n var cmd = data[i++];\n var isFirst = i === 1;\n\n if (cmd === CMD.M && i > 1) {\n if (!isStroke) {\n w += windingLine(xi, yi, x0, y0, x, y);\n }\n }\n\n if (isFirst) {\n xi = data[i];\n yi = data[i + 1];\n x0 = xi;\n y0 = yi;\n }\n\n switch (cmd) {\n case CMD.M:\n x0 = data[i++];\n y0 = data[i++];\n xi = x0;\n yi = y0;\n break;\n\n case CMD.L:\n if (isStroke) {\n if (line.containStroke(xi, yi, data[i], data[i + 1], lineWidth, x, y)) {\n return true;\n }\n } else {\n w += windingLine(xi, yi, data[i], data[i + 1], x, y) || 0;\n }\n\n xi = data[i++];\n yi = data[i++];\n break;\n\n case CMD.C:\n if (isStroke) {\n if (cubic.containStroke(xi, yi, data[i++], data[i++], data[i++], data[i++], data[i], data[i + 1], lineWidth, x, y)) {\n return true;\n }\n } else {\n w += windingCubic(xi, yi, data[i++], data[i++], data[i++], data[i++], data[i], data[i + 1], x, y) || 0;\n }\n\n xi = data[i++];\n yi = data[i++];\n break;\n\n case CMD.Q:\n if (isStroke) {\n if (quadratic.containStroke(xi, yi, data[i++], data[i++], data[i], data[i + 1], lineWidth, x, y)) {\n return true;\n }\n } else {\n w += windingQuadratic(xi, yi, data[i++], data[i++], data[i], data[i + 1], x, y) || 0;\n }\n\n xi = data[i++];\n yi = data[i++];\n break;\n\n case CMD.A:\n var cx = data[i++];\n var cy = data[i++];\n var rx = data[i++];\n var ry = data[i++];\n var theta = data[i++];\n var dTheta = data[i++];\n i += 1;\n var anticlockwise = !!(1 - data[i++]);\n x1 = Math.cos(theta) * rx + cx;\n y1 = Math.sin(theta) * ry + cy;\n\n if (!isFirst) {\n w += windingLine(xi, yi, x1, y1, x, y);\n } else {\n x0 = x1;\n y0 = y1;\n }\n\n var _x = (x - cx) * ry / rx + cx;\n\n if (isStroke) {\n if (arc.containStroke(cx, cy, ry, theta, theta + dTheta, anticlockwise, lineWidth, _x, y)) {\n return true;\n }\n } else {\n w += windingArc(cx, cy, ry, theta, theta + dTheta, anticlockwise, _x, y);\n }\n\n xi = Math.cos(theta + dTheta) * rx + cx;\n yi = Math.sin(theta + dTheta) * ry + cy;\n break;\n\n case CMD.R:\n x0 = xi = data[i++];\n y0 = yi = data[i++];\n var width = data[i++];\n var height = data[i++];\n x1 = x0 + width;\n y1 = y0 + height;\n\n if (isStroke) {\n if (line.containStroke(x0, y0, x1, y0, lineWidth, x, y) || line.containStroke(x1, y0, x1, y1, lineWidth, x, y) || line.containStroke(x1, y1, x0, y1, lineWidth, x, y) || line.containStroke(x0, y1, x0, y0, lineWidth, x, y)) {\n return true;\n }\n } else {\n w += windingLine(x1, y0, x1, y1, x, y);\n w += windingLine(x0, y1, x0, y0, x, y);\n }\n\n break;\n\n case CMD.Z:\n if (isStroke) {\n if (line.containStroke(xi, yi, x0, y0, lineWidth, x, y)) {\n return true;\n }\n } else {\n w += windingLine(xi, yi, x0, y0, x, y);\n }\n\n xi = x0;\n yi = y0;\n break;\n }\n }\n\n if (!isStroke && !isAroundEqual(yi, y0)) {\n w += windingLine(xi, yi, x0, y0, x, y) || 0;\n }\n\n return w !== 0;\n}\n\nexport function contain(pathProxy, x, y) {\n return containPath(pathProxy, 0, false, x, y);\n}\nexport function containStroke(pathProxy, lineWidth, x, y) {\n return 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PathProxy from '../core/PathProxy.js';\nimport * as line from './line.js';\nimport * as cubic from './cubic.js';\nimport * as quadratic from './quadratic.js';\nimport * as arc from './arc.js';\nimport * as curve from '../core/curve.js';\nimport windingLine from './windingLine.js';\nvar CMD = PathProxy.CMD;\nvar PI2 = Math.PI * 2;\nvar EPSILON = 1e-4;\nfunction isAroundEqual(a, b) {\n return Math.abs(a - b) < EPSILON;\n}\nvar roots = [-1, -1, -1];\nvar extrema = [-1, -1];\nfunction swapExtrema() {\n var tmp = extrema[0];\n extrema[0] = extrema[1];\n extrema[1] = tmp;\n}\nfunction windingCubic(x0, y0, x1, y1, x2, y2, x3, y3, x, y) {\n if ((y > y0 && y > y1 && y > y2 && y > y3)\n || (y < y0 && y < y1 && y < y2 && y < y3)) {\n return 0;\n }\n var nRoots = curve.cubicRootAt(y0, y1, y2, y3, y, roots);\n if (nRoots === 0) {\n return 0;\n }\n else {\n var w = 0;\n var nExtrema = -1;\n var y0_ = void 0;\n var y1_ = void 0;\n for (var i = 0; i < nRoots; i++) {\n var t = roots[i];\n var unit = (t === 0 || t === 1) ? 0.5 : 1;\n var x_ = curve.cubicAt(x0, x1, x2, x3, t);\n if (x_ < x) {\n continue;\n }\n if (nExtrema < 0) {\n nExtrema = curve.cubicExtrema(y0, y1, y2, y3, extrema);\n if (extrema[1] < extrema[0] && nExtrema > 1) {\n swapExtrema();\n }\n y0_ = curve.cubicAt(y0, y1, y2, y3, extrema[0]);\n if (nExtrema > 1) {\n y1_ = curve.cubicAt(y0, y1, y2, y3, extrema[1]);\n }\n }\n if (nExtrema === 2) {\n if (t < extrema[0]) {\n w += y0_ < y0 ? unit : -unit;\n }\n else if (t < extrema[1]) {\n w += y1_ < y0_ ? unit : -unit;\n }\n else {\n w += y3 < y1_ ? unit : -unit;\n }\n }\n else {\n if (t < extrema[0]) {\n w += y0_ < y0 ? unit : -unit;\n }\n else {\n w += y3 < y0_ ? unit : -unit;\n }\n }\n }\n return w;\n }\n}\nfunction windingQuadratic(x0, y0, x1, y1, x2, y2, x, y) {\n if ((y > y0 && y > y1 && y > y2)\n || (y < y0 && y < y1 && y < y2)) {\n return 0;\n }\n var nRoots = curve.quadraticRootAt(y0, y1, y2, y, roots);\n if (nRoots === 0) {\n return 0;\n }\n else {\n var t = curve.quadraticExtremum(y0, y1, y2);\n if (t >= 0 && t <= 1) {\n var w = 0;\n var y_ = curve.quadraticAt(y0, y1, y2, t);\n for (var i = 0; i < nRoots; i++) {\n var unit = (roots[i] === 0 || roots[i] === 1) ? 0.5 : 1;\n var x_ = curve.quadraticAt(x0, x1, x2, roots[i]);\n if (x_ < x) {\n continue;\n }\n if (roots[i] < t) {\n w += y_ < y0 ? unit : -unit;\n }\n else {\n w += y2 < y_ ? unit : -unit;\n }\n }\n return w;\n }\n else {\n var unit = (roots[0] === 0 || roots[0] === 1) ? 0.5 : 1;\n var x_ = curve.quadraticAt(x0, x1, x2, roots[0]);\n if (x_ < x) {\n return 0;\n }\n return y2 < y0 ? unit : -unit;\n }\n }\n}\nfunction windingArc(cx, cy, r, startAngle, endAngle, anticlockwise, x, y) {\n y -= cy;\n if (y > r || y < -r) {\n return 0;\n }\n var tmp = Math.sqrt(r * r - y * y);\n roots[0] = -tmp;\n roots[1] = tmp;\n var dTheta = Math.abs(startAngle - endAngle);\n if (dTheta < 1e-4) {\n return 0;\n }\n if (dTheta >= PI2 - 1e-4) {\n startAngle = 0;\n endAngle = PI2;\n var dir = anticlockwise ? 1 : -1;\n if (x >= roots[0] + cx && x <= roots[1] + cx) {\n return dir;\n }\n else {\n return 0;\n }\n }\n if (startAngle > endAngle) {\n var tmp_1 = startAngle;\n startAngle = endAngle;\n endAngle = tmp_1;\n }\n if (startAngle < 0) {\n startAngle += PI2;\n endAngle += PI2;\n }\n var w = 0;\n for (var i = 0; i < 2; i++) {\n var x_ = roots[i];\n if (x_ + cx > x) {\n var angle = Math.atan2(y, x_);\n var dir = anticlockwise ? 1 : -1;\n if (angle < 0) {\n angle = PI2 + angle;\n }\n if ((angle >= startAngle && angle <= endAngle)\n || (angle + PI2 >= startAngle && angle + PI2 <= endAngle)) {\n if (angle > Math.PI / 2 && angle < Math.PI * 1.5) {\n dir = -dir;\n }\n w += dir;\n }\n }\n }\n return w;\n}\nfunction containPath(path, lineWidth, isStroke, x, y) {\n var data = path.data;\n var len = path.len();\n var w = 0;\n var xi = 0;\n var yi = 0;\n var x0 = 0;\n var y0 = 0;\n var x1;\n var y1;\n for (var i = 0; i < len;) {\n var cmd = data[i++];\n var isFirst = i === 1;\n if (cmd === CMD.M && i > 1) {\n if (!isStroke) {\n w += windingLine(xi, yi, x0, y0, x, y);\n }\n }\n if (isFirst) {\n xi = data[i];\n yi = data[i + 1];\n x0 = xi;\n y0 = yi;\n }\n switch (cmd) {\n case CMD.M:\n x0 = data[i++];\n y0 = data[i++];\n xi = x0;\n yi = y0;\n break;\n case CMD.L:\n if (isStroke) {\n if (line.containStroke(xi, yi, data[i], data[i + 1], lineWidth, x, y)) {\n return true;\n }\n }\n else {\n w += windingLine(xi, yi, data[i], data[i + 1], x, y) || 0;\n }\n xi = data[i++];\n yi = data[i++];\n break;\n case CMD.C:\n if (isStroke) {\n if (cubic.containStroke(xi, yi, data[i++], data[i++], data[i++], data[i++], data[i], data[i + 1], lineWidth, x, y)) {\n return true;\n }\n }\n else {\n w += windingCubic(xi, yi, data[i++], data[i++], data[i++], data[i++], data[i], data[i + 1], x, y) || 0;\n }\n xi = data[i++];\n yi = data[i++];\n break;\n case CMD.Q:\n if (isStroke) {\n if (quadratic.containStroke(xi, yi, data[i++], data[i++], data[i], data[i + 1], lineWidth, x, y)) {\n return true;\n }\n }\n else {\n w += windingQuadratic(xi, yi, data[i++], data[i++], data[i], data[i + 1], x, y) || 0;\n }\n xi = data[i++];\n yi = data[i++];\n break;\n case CMD.A:\n var cx = data[i++];\n var cy = data[i++];\n var rx = data[i++];\n var ry = data[i++];\n var theta = data[i++];\n var dTheta = data[i++];\n i += 1;\n var anticlockwise = !!(1 - data[i++]);\n x1 = Math.cos(theta) * rx + cx;\n y1 = Math.sin(theta) * ry + cy;\n if (!isFirst) {\n w += windingLine(xi, yi, x1, y1, x, y);\n }\n else {\n x0 = x1;\n y0 = y1;\n }\n var _x = (x - cx) * ry / rx + cx;\n if (isStroke) {\n if (arc.containStroke(cx, cy, ry, theta, theta + dTheta, anticlockwise, lineWidth, _x, y)) {\n return true;\n }\n }\n else {\n w += windingArc(cx, cy, ry, theta, theta + dTheta, anticlockwise, _x, y);\n }\n xi = Math.cos(theta + dTheta) * rx + cx;\n yi = Math.sin(theta + dTheta) * ry + cy;\n break;\n case CMD.R:\n x0 = xi = data[i++];\n y0 = yi = data[i++];\n var width = data[i++];\n var height = data[i++];\n x1 = x0 + width;\n y1 = y0 + height;\n if (isStroke) {\n if (line.containStroke(x0, y0, x1, y0, lineWidth, x, y)\n || line.containStroke(x1, y0, x1, y1, lineWidth, x, y)\n || line.containStroke(x1, y1, x0, y1, lineWidth, x, y)\n || line.containStroke(x0, y1, x0, y0, lineWidth, x, y)) {\n return true;\n }\n }\n else {\n w += windingLine(x1, y0, x1, y1, x, y);\n w += windingLine(x0, y1, x0, y0, x, y);\n }\n break;\n case CMD.Z:\n if (isStroke) {\n if (line.containStroke(xi, yi, x0, y0, lineWidth, x, y)) {\n return true;\n }\n }\n else {\n w += windingLine(xi, yi, x0, y0, x, y);\n }\n xi = x0;\n yi = y0;\n break;\n }\n }\n if (!isStroke && !isAroundEqual(yi, y0)) {\n w += windingLine(xi, yi, x0, y0, x, y) || 0;\n }\n return w !== 0;\n}\nexport function contain(pathProxy, x, y) {\n return containPath(pathProxy, 0, false, x, y);\n}\nexport function containStroke(pathProxy, lineWidth, x, y) {\n return containPath(pathProxy, lineWidth, true, x, y);\n}\n"]},"metadata":{},"sourceType":"module"} |