persagy-web-doc/docs/.vuepress/components/engine/shape/DrawLine2.vue

<template>
    <canvas id="drawLine2" width="800" height="100"/>
</template>

<script lang="ts">
    import { SCanvasView, SColor, SPainter } from "@persagy-web/draw/lib";
    import { Component, Vue } from "vue-property-decorator";

    class TestView extends SCanvasView {

        constructor() {
            super("drawLine2")
        }

        onDraw(canvas: SPainter): void {
            // 在此编写绘制操作相关命令
            canvas.drawLine(0, 0, 100, 100);
            canvas.pen.lineWidth = 1;
            canvas.pen.color = SColor.Blue;

            for (let i = 0; i < 360; i += 10) {
                let q = i * Math.PI / 180;
                // 绘制一条线段
                canvas.drawLine(
                    200,
                    50,
                    200 + 50 * Math.cos(q),
                    50 + 50 * Math.sin(q));
            }

            canvas.pen.color = SColor.Red;

            for (let i = 0; i < 360; i += 10) {
                let q1 = i * Math.PI / 180;
                let q2 = (i + 120) * Math.PI / 180;
                canvas.drawLine(
                    350 + 50 * Math.cos(q1),
                    50 + 50 * Math.sin(q1),
                    350 + 50 * Math.cos(q2),
                    50 + 50 * Math.sin(q2));
            }
        }
    }

    @Component
    export default class DrawLine2 extends Vue {
        mounted(): void {
            new TestView();
        }
    }
</script>