1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
<script>
export default {
name: "tile-tree",
data(){
return {
TILE_SPACING: 5,
HEADER_SZ: 20,
}
},
props: {
tree: Object,
x: Number,
y: Number,
width: Number,
height: Number,
isRoot: Boolean,
},
computed: {
layout(){
if (!this.tree.children || this.tree.children.length == 0)
return {};
let hOffset = (this.isRoot ? 0 : this.HEADER_SZ);
let x = 0, y = hOffset, w = this.width, h = this.height - hOffset;
//return this.basicSquaresLayout(this.tree.children, 0, hOffset, this.width, this.height - hOffset);
return this.sweepToSideLayout(this.tree.children, 0, hOffset, this.width, this.height - hOffset);
}
},
methods: {
basicSquaresLayout(nodes, x0, y0, w, h){
//determine layout for squares in a specified rectangle, with spacing
let numCols = this.pickNumCols(nodes.length, w/h);
let numRows = Math.ceil(nodes.length / numCols);
let tileSz = Math.min(
((w - this.TILE_SPACING) / numCols) - this.TILE_SPACING,
((h - this.TILE_SPACING) / numRows) - this.TILE_SPACING);
return Object.fromEntries(
nodes.map((el, idx) => [el.name, {
x: x0 + (idx % numCols)*(tileSz + this.TILE_SPACING) + this.TILE_SPACING,
y: y0 + Math.floor(idx / numCols)*(tileSz + this.TILE_SPACING) + this.TILE_SPACING,
w: tileSz,
h: tileSz
}])
);
},
pickNumCols(numTiles, aspectRatio){ //account for tile-spacing?
//look for number of columns with highest occupied-fraction of rectangles with aspectRatio
let bestNum, bestFrac = 0;
for (let numCols = 1; numCols <= numTiles; numCols++){
let numRows = Math.ceil(numTiles/numCols);
let ar = numCols/numRows;
let frac = aspectRatio > ar ? ar/aspectRatio : aspectRatio/ar;
if (frac > bestFrac){
bestFrac = frac;
bestNum = numCols;
}
}
return bestNum;
},
sweepToSideLayout(nodes, x0, y0, w, h){
//separate leaf and non-leaf nodes
let leaves = [], nonLeaves = [];
nodes.forEach(e => ((e.children && e.children.length > 0) ? nonLeaves : leaves).push(e));
//determine layout
if (nonLeaves.length == 0){ //if all leaves, use squares-layout
return this.basicSquaresLayout(this.tree.children, x0, y0, w, h);
} else { //if some non-leaves, use rect-layout
let retVal = {};
if (leaves.length > 0){
let ratio = leaves.length / this.tree.tileCount;
retVal = this.basicSquaresLayout(leaves, x0, y0, w*ratio, h);
x0 += w*ratio;
w -= w*ratio;
}
return {...retVal, ...this.basicSquaresLayout(nonLeaves, x0, y0, w, h)};
}
}
}
}
</script>
<template>
<div v-if="tree.children && tree.children.length > 0" class="border border-black"
:style="{position: 'absolute', left: x + 'px', top: y + 'px', width: + width + 'px', height: height + 'px'}">
<div v-if="!isRoot" :style="{height: HEADER_SZ + 'px'}" class="text-center">{{tree.name}}</div>
<tile-tree v-for="child in tree.children" :tree="child"
:x="layout[child.name].x" :y="layout[child.name].y" :width="layout[child.name].w" :height="layout[child.name].h"
></tile-tree>
</div>
<img v-else
:src="'/src/assets/' + tree.name + '.jpg'" :alt="tree.name"
:style="{position: 'absolute', left: x + 'px', top: y + 'px'}" :width="width" :height="height"
class="transition-all duration-300 ease-out border-2 border-amber-900"
/>
</template>
|
