121 lines
5.0 KiB
Vue
121 lines
5.0 KiB
Vue
<template>
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<div class="absolute top-0 left-0 w-full h-full origin-center pointer-events-none *:pointer-events-auto *:select-none" v-if="canvas">
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<div>
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<CanvasNode v-for="node of canvas.nodes" :key="node.id" :node="node" />
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</div>
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<template v-for="edge of canvas.edges">
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<div :key="edge.id" v-if="edge.label" class="absolute z-10"
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:style="{ transform: labelCenter(getNode(canvas.nodes, edge.fromNode)!, edge.fromSide, getNode(canvas.nodes, edge.toNode)!, edge.toSide) }">
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<div class="relative bg-light-20 dark:bg-dark-20 border border-light-35 dark:border-dark-35 px-4 py-2 -translate-x-[50%] -translate-y-[50%]">{{ edge.label }}</div>
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</div>
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</template>
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<svg class="absolute top-0 left-0 overflow-visible w-full h-full origin-top pointer-events-none">
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<CanvasEdge v-for="edge of canvas.edges" :key="edge.id"
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:path="getPath(getNode(canvas.nodes, edge.fromNode)!, edge.fromSide, getNode(canvas.nodes, edge.toNode)!, edge.toSide)"
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:color="edge.color" :label="edge.label" />
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</svg>
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</div>
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</template>
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<script setup lang="ts">
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const { path } = defineProps<{
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path: string
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}>();
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const { content, get } = useContent();
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const overview = computed(() => content.value.find(e => e.path === path));
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const loading = ref(false);
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if(overview.value && !overview.value.content)
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{
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loading.value = true;
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await get(path);
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loading.value = false;
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}
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const canvas = computed(() => overview.value && overview.value.content ? JSON.parse(overview.value.content) as CanvasContent : undefined);
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</script>
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<script lang="ts">
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import { clamp } from '~/shared/general.utils';
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import type { CanvasContent, CanvasNode } from '~/types/canvas';
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function edgePos(side: 'bottom' | 'top' | 'left' | 'right', pos: { x: number, y: number }, offset: number): { x: number, y: number } {
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switch (side) {
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case "left":
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return {
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x: pos.x - offset,
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y: pos.y
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};
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case "right":
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return {
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x: pos.x + offset,
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y: pos.y
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};
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case "top":
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return {
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x: pos.x,
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y: pos.y - offset
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};
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case "bottom":
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return {
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x: pos.x,
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y: pos.y + offset
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}
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}
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}
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function getNode(nodes: CanvasNode[], id: string): CanvasNode | undefined
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{
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return nodes.find(e => e.id === id);
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}
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function posFromDir(e: { minX: number, minY: number, maxX: number, maxY: number }, t: 'bottom' | 'top' | 'left' | 'right'): { x: number, y: number } {
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switch (t) {
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case "top":
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return { x: (e.minX + e.maxX) / 2, y: e.minY };
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case "right":
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return { x: e.maxX, y: (e.minY + e.maxY) / 2 };
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case "bottom":
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return { x: (e.minX + e.maxX) / 2, y: e.maxY };
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case "left":
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return { x: e.minX, y: (e.minY + e.maxY) / 2 };
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}
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}
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function getBbox(node: CanvasNode): { minX: number, minY: number, maxX: number, maxY: number } {
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return { minX: node.x, minY: node.y, maxX: node.x + node.width, maxY: node.y + node.height };
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}
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function getPath(from: CanvasNode, fromSide: 'bottom' | 'top' | 'left' | 'right', to: CanvasNode, toSide: 'bottom' | 'top' | 'left' | 'right'): any {
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if(from === undefined || to === undefined)
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{
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return {
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path: '',
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from: {},
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to: {},
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toSide: '',
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}
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}
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const start = posFromDir(getBbox(from), fromSide), end = posFromDir(getBbox(to), toSide);
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return bezier(start, fromSide, end, toSide);
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}
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function bezier(from: { x: number, y: number }, fromSide: 'bottom' | 'top' | 'left' | 'right', to: { x: number, y: number }, toSide: 'bottom' | 'top' | 'left' | 'right'): any {
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const r = Math.hypot(from.x - to.x, from.y - to.y), o = clamp(r / 2, 70, 150), a = edgePos(fromSide, from, o), s = edgePos(toSide, to, o);
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return {
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path: `M${from.x},${from.y} C${a.x},${a.y} ${s.x},${s.y} ${to.x},${to.y}`,
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from: from,
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to: to,
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side: toSide,
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};
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}
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function labelCenter(from: CanvasNode, fromSide: 'bottom' | 'top' | 'left' | 'right', to: CanvasNode, toSide: 'bottom' | 'top' | 'left' | 'right'): string {
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const start = posFromDir(getBbox(from), fromSide), end = posFromDir(getBbox(to), toSide);
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const len = Math.hypot(start.x - end.x, start.y - end.y), offset = clamp(len / 2, 70, 150), b = edgePos(fromSide, start, offset), s = edgePos(toSide, end, offset);
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const center = getCenter(start, end, b, s, 0.5);
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return `translate(${center.x}px, ${center.y}px)`;
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}
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function getCenter(n: { x: number, y: number }, i: { x: number, y: number }, r: { x: number, y: number }, o: { x: number, y: number }, e: number): { x: number, y: number } {
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const a = 1 - e, s = a * a * a, l = 3 * e * a * a, c = 3 * e * e * a, u = e * e * e;
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return {
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x: s * n.x + l * r.x + c * o.x + u * i.x,
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y: s * n.y + l * r.y + c * o.y + u * i.y
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};
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}
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</script> |