63 lines
1.8 KiB
Java
63 lines
1.8 KiB
Java
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var Line = require('../math/line');
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var Quadratic = require('../math/quadratic');
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var Cubic = require('../math/cubic');
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var Arc = require('../math/arc');
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module.exports = {
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line: function line(x1, y1, x2, y2, lineWidth, x, y) {
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var box = Line.box(x1, y1, x2, y2, lineWidth);
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if (!this.box(box.minX, box.maxX, box.minY, box.maxY, x, y)) {
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return false;
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}
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var d = Line.pointDistance(x1, y1, x2, y2, x, y);
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if (isNaN(d)) {
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return false;
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}
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return d <= lineWidth / 2;
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},
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polyline: function polyline(points, lineWidth, x, y) {
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var l = points.length - 1;
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if (l < 1) {
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return false;
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}
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for (var i = 0; i < l; i++) {
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var x1 = points[i][0];
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var y1 = points[i][1];
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var x2 = points[i + 1][0];
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var y2 = points[i + 1][1];
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if (this.line(x1, y1, x2, y2, lineWidth, x, y)) {
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return true;
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}
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}
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return false;
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},
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cubicline: function cubicline(x1, y1, x2, y2, x3, y3, x4, y4, lineWidth, x, y) {
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return Cubic.pointDistance(x1, y1, x2, y2, x3, y3, x4, y4, x, y) <= lineWidth / 2;
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},
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quadraticline: function quadraticline(x1, y1, x2, y2, x3, y3, lineWidth, x, y) {
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return Quadratic.pointDistance(x1, y1, x2, y2, x3, y3, x, y) <= lineWidth / 2;
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},
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arcline: function arcline(cx, cy, r, startAngle, endAngle, clockwise, lineWidth, x, y) {
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return Arc.pointDistance(cx, cy, r, startAngle, endAngle, clockwise, x, y) <= lineWidth / 2;
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},
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rect: function rect(rx, ry, width, height, x, y) {
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return rx <= x && x <= rx + width && ry <= y && y <= ry + height;
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},
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circle: function circle(cx, cy, r, x, y) {
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return Math.pow(x - cx, 2) + Math.pow(y - cy, 2) <= Math.pow(r, 2);
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},
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box: function box(minX, maxX, minY, maxY, x, y) {
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return minX <= x && x <= maxX && minY <= y && y <= maxY;
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}
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};
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