/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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import Path, { PathProps } from 'zrender/src/graphic/Path';
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class PointerShape {
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angle = 0;
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width = 10;
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r = 10;
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x = 0;
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y = 0;
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}
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interface PointerPathProps extends PathProps {
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shape?: Partial<PointerShape>
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}
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export default class PointerPath extends Path<PointerPathProps> {
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readonly type = 'pointer';
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shape: PointerShape;
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constructor(opts?: PointerPathProps) {
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super(opts);
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}
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getDefaultShape() {
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return new PointerShape();
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}
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buildPath(ctx: CanvasRenderingContext2D, shape: PointerShape) {
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const mathCos = Math.cos;
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const mathSin = Math.sin;
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const r = shape.r;
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const width = shape.width;
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let angle = shape.angle;
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const x = shape.x - mathCos(angle) * width * (width >= r / 3 ? 1 : 2);
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const y = shape.y - mathSin(angle) * width * (width >= r / 3 ? 1 : 2);
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angle = shape.angle - Math.PI / 2;
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ctx.moveTo(x, y);
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ctx.lineTo(
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shape.x + mathCos(angle) * width,
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shape.y + mathSin(angle) * width
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);
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ctx.lineTo(
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shape.x + mathCos(shape.angle) * r,
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shape.y + mathSin(shape.angle) * r
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);
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ctx.lineTo(
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shape.x - mathCos(angle) * width,
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shape.y - mathSin(angle) * width
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);
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ctx.lineTo(x, y);
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}
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}
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