275 lines
8.7 KiB
JavaScript
275 lines
8.7 KiB
JavaScript
/* *
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*
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* Highcharts cylinder - a 3D series
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*
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* (c) 2010-2021 Highsoft AS
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*
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* Author: Kacper Madej
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*
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* License: www.highcharts.com/license
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*
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* !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
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*
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* */
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'use strict';
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import Color from '../../Core/Color/Color.js';
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var color = Color.parse;
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import H from '../../Core/Globals.js';
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var charts = H.charts, deg2rad = H.deg2rad;
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import Math3D from '../../Core/Math3D.js';
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var perspective = Math3D.perspective;
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import RendererRegistry from '../../Core/Renderer/RendererRegistry.js';
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import U from '../../Core/Utilities.js';
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var merge = U.merge, pick = U.pick;
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/* *
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*
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* Composition
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*
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* */
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var rendererProto = RendererRegistry.getRendererType().prototype, cuboidPath = rendererProto.cuboidPath;
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// Check if a path is simplified. The simplified path contains only lineTo
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// segments, whereas non-simplified contain curves.
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var isSimplified = function (path) {
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return !path.some(function (seg) { return seg[0] === 'C'; });
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};
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// cylinder extends cuboid
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var cylinderMethods = merge(rendererProto.elements3d.cuboid, {
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parts: ['top', 'bottom', 'front', 'back'],
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pathType: 'cylinder',
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fillSetter: function (fill) {
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this.singleSetterForParts('fill', null, {
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front: fill,
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back: fill,
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top: color(fill).brighten(0.1).get(),
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bottom: color(fill).brighten(-0.1).get()
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});
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// fill for animation getter (#6776)
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this.color = this.fill = fill;
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return this;
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}
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});
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rendererProto.elements3d.cylinder = cylinderMethods;
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rendererProto.cylinder = function (shapeArgs) {
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return this.element3d('cylinder', shapeArgs);
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};
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// Generates paths and zIndexes.
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rendererProto.cylinderPath = function (shapeArgs) {
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var renderer = this, chart = charts[renderer.chartIndex],
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// decide zIndexes of parts based on cubiod logic, for consistency.
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cuboidData = cuboidPath.call(renderer, shapeArgs), isTopFirst = !cuboidData.isTop, isFronFirst = !cuboidData.isFront, top = renderer.getCylinderEnd(chart, shapeArgs), bottom = renderer.getCylinderEnd(chart, shapeArgs, true);
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return {
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front: renderer.getCylinderFront(top, bottom),
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back: renderer.getCylinderBack(top, bottom),
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top: top,
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bottom: bottom,
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zIndexes: {
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top: isTopFirst ? 3 : 0,
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bottom: isTopFirst ? 0 : 3,
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front: isFronFirst ? 2 : 1,
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back: isFronFirst ? 1 : 2,
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group: cuboidData.zIndexes.group
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}
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};
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};
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// Returns cylinder Front path
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rendererProto.getCylinderFront = function (topPath, bottomPath) {
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var path = topPath.slice(0, 3);
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if (isSimplified(bottomPath)) {
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var move = bottomPath[0];
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if (move[0] === 'M') {
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path.push(bottomPath[2]);
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path.push(bottomPath[1]);
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path.push(['L', move[1], move[2]]);
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}
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}
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else {
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var move = bottomPath[0], curve1 = bottomPath[1], curve2 = bottomPath[2];
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if (move[0] === 'M' && curve1[0] === 'C' && curve2[0] === 'C') {
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path.push(['L', curve2[5], curve2[6]]);
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path.push([
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'C',
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curve2[3],
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curve2[4],
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curve2[1],
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curve2[2],
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curve1[5],
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curve1[6]
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]);
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path.push([
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'C',
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curve1[3],
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curve1[4],
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curve1[1],
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curve1[2],
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move[1],
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move[2]
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]);
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}
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}
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path.push(['Z']);
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return path;
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};
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// Returns cylinder Back path
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rendererProto.getCylinderBack = function (topPath, bottomPath) {
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var path = [];
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if (isSimplified(topPath)) {
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var move = topPath[0], line2 = topPath[2];
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if (move[0] === 'M' && line2[0] === 'L') {
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path.push(['M', line2[1], line2[2]]);
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path.push(topPath[3]);
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// End at start
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path.push(['L', move[1], move[2]]);
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}
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}
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else {
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if (topPath[2][0] === 'C') {
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path.push(['M', topPath[2][5], topPath[2][6]]);
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}
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path.push(topPath[3], topPath[4]);
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}
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if (isSimplified(bottomPath)) {
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var move = bottomPath[0];
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if (move[0] === 'M') {
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path.push(['L', move[1], move[2]]);
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path.push(bottomPath[3]);
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path.push(bottomPath[2]);
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}
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}
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else {
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var curve2 = bottomPath[2], curve3 = bottomPath[3], curve4 = bottomPath[4];
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if (curve2[0] === 'C' && curve3[0] === 'C' && curve4[0] === 'C') {
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path.push(['L', curve4[5], curve4[6]]);
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path.push([
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'C',
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curve4[3],
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curve4[4],
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curve4[1],
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curve4[2],
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curve3[5],
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curve3[6]
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]);
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path.push([
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'C',
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curve3[3],
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curve3[4],
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curve3[1],
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curve3[2],
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curve2[5],
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curve2[6]
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]);
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}
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}
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path.push(['Z']);
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return path;
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};
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// Retruns cylinder path for top or bottom
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rendererProto.getCylinderEnd = function (chart, shapeArgs, isBottom) {
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var _a = shapeArgs.width, width = _a === void 0 ? 0 : _a, _b = shapeArgs.height, height = _b === void 0 ? 0 : _b, _c = shapeArgs.alphaCorrection, alphaCorrection = _c === void 0 ? 0 : _c;
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// A half of the smaller one out of width or depth (optional, because
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// there's no depth for a funnel that reuses the code)
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var depth = pick(shapeArgs.depth, width, 0), radius = Math.min(width, depth) / 2,
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// Approximated longest diameter
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angleOffset = deg2rad * (chart.options.chart.options3d.beta - 90 +
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alphaCorrection),
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// Could be top or bottom of the cylinder
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y = (shapeArgs.y || 0) + (isBottom ? height : 0),
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// Use cubic Bezier curve to draw a cricle in x,z (y is constant).
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// More math. at spencermortensen.com/articles/bezier-circle/
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c = 0.5519 * radius, centerX = width / 2 + (shapeArgs.x || 0), centerZ = depth / 2 + (shapeArgs.z || 0),
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// points could be generated in a loop, but readability will plummet
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points = [{
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x: 0,
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y: y,
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z: radius
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}, {
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x: c,
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y: y,
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z: radius
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}, {
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x: radius,
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y: y,
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z: c
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}, {
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x: radius,
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y: y,
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z: 0
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}, {
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x: radius,
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y: y,
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z: -c
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}, {
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x: c,
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y: y,
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z: -radius
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}, {
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x: 0,
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y: y,
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z: -radius
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}, {
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x: -c,
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y: y,
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z: -radius
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}, {
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x: -radius,
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y: y,
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z: -c
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}, {
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x: -radius,
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y: y,
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z: 0
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}, {
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x: -radius,
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y: y,
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z: c
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}, {
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x: -c,
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y: y,
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z: radius
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}, {
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x: 0,
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y: y,
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z: radius
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}], cosTheta = Math.cos(angleOffset), sinTheta = Math.sin(angleOffset), perspectivePoints, path, x, z;
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// rotete to match chart's beta and translate to the shape center
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points.forEach(function (point, i) {
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x = point.x;
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z = point.z;
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// x′ = (x * cosθ − z * sinθ) + centerX
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// z′ = (z * cosθ + x * sinθ) + centerZ
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points[i].x = (x * cosTheta - z * sinTheta) + centerX;
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points[i].z = (z * cosTheta + x * sinTheta) + centerZ;
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});
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perspectivePoints = perspective(points, chart, true);
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// check for sub-pixel curve issue, compare front and back edges
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if (Math.abs(perspectivePoints[3].y - perspectivePoints[9].y) < 2.5 &&
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Math.abs(perspectivePoints[0].y - perspectivePoints[6].y) < 2.5) {
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// use simplied shape
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path = this.toLinePath([
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perspectivePoints[0],
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perspectivePoints[3],
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perspectivePoints[6],
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perspectivePoints[9]
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], true);
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}
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else {
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// or default curved path to imitate ellipse (2D circle)
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path = this.getCurvedPath(perspectivePoints);
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}
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return path;
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};
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// Returns curved path in format of:
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// [ M, x, y, ...[C, cp1x, cp2y, cp2x, cp2y, epx, epy]*n_times ]
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// (cp - control point, ep - end point)
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rendererProto.getCurvedPath = function (points) {
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var path = [['M', points[0].x, points[0].y]], limit = points.length - 2, i;
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for (i = 1; i < limit; i += 3) {
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path.push([
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'C',
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points[i].x, points[i].y,
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points[i + 1].x, points[i + 1].y,
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points[i + 2].x, points[i + 2].y
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]);
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}
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return path;
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};
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