Skip to content

Instantly share code, notes, and snippets.

@sfpgmr
Last active August 29, 2015 14:16
Show Gist options
  • Star 0 You must be signed in to star a gist
  • Fork 0 You must be signed in to fork a gist
  • Save sfpgmr/855ad392435fcdd87584 to your computer and use it in GitHub Desktop.
Save sfpgmr/855ad392435fcdd87584 to your computer and use it in GitHub Desktop.
SVGからthree.jsのshapeへの変換(2)

SVGからthree.jsのshapeへの変換(2)

エドワード・マイブリッジの「Horse in motion」をInkscapeでトレースし、各馬をセル化したものをthree.jsのshapeに変換し表示しています。

下記のURLから動くデモが見れます。Windows 10 Tech Preview 9926 のIE11では動作しませんでした。ひょっとするとIE11ではそもそも動作しないのかもしれません。原因は不明ですが。。

http://bl.ocks.org/sfpgmr/855ad392435fcdd87584

※前回のバグは下記記事が糸口となり解決しました。

Converting SVG paths with holes to extruded shapes in three.js

Display the source blob
Display the rendered blob
Raw
Sorry, something went wrong. Reload?
Sorry, we cannot display this file.
Sorry, this file is invalid so it cannot be displayed.
<!DOCTYPE html>
<html vocab="http://schema.org" lang="ja">
<head>
<title>SVGアニメーションのテスト</title>
<meta charset="utf-8" />
<meta name="description" content="SVGアニメーションのテスト" />
<meta name="keywords" content="Youtube,d3.js,Q.js,jquery" />
<meta name="author" content="sfpgmr" />
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" />
<script type="text/javascript" src="http://cdnjs.cloudflare.com/ajax/libs/d3/3.5.2/d3.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r70/three.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/q.js/1.1.2/q.min.js" ></script>
<!--<script type="text/javascript" src="./graphics.js"></script> -->
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/3.0.2/normalize.min.css" />
<style>
body {
margin: 0;
padding: 0;
overflow: hidden;
}
#svg {
display:none;
}
</style>
</head>
<body>
<div id="content"></div>
<div id="svg"></div>
<div id="svgcell"></div>
<script type="text/javascript" src="index.js"></script>
<script>
</script>
</body>
</html>
//The MIT License (MIT)
//
//Copyright (c) 2015 Satoshi Fujiwara
//
//Permission is hereby granted, free of charge, to any person obtaining a copy
//of this software and associated documentation files (the "Software"), to deal
//in the Software without restriction, including without limitation the rights
//to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//copies of the Software, and to permit persons to whom the Software is
//furnished to do so, subject to the following conditions:
//
//The above copyright notice and this permission notice shall be included in
//all copies or substantial portions of the Software.
//
//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
//THE SOFTWARE.
/// <reference path="http://cdnjs.cloudflare.com/ajax/libs/d3/3.5.2/d3.js" />
/// <reference path="http://cdnjs.cloudflare.com/ajax/libs/three.js/r70/three.js" />
/// <reference path="..\intellisense\q.intellisense.js" />
// stackoverflowより
// 絶対座標から相対座標への変換
// http://stackoverflow.com/questions/14179333/convert-svg-path-to-relative-commands
function convertToRelative(path) {
function set(type) {
var args = [].slice.call(arguments, 1)
, rcmd = 'createSVGPathSeg'+ type +'Rel'
, rseg = path[rcmd].apply(path, args);
segs.replaceItem(rseg, i);
}
var dx, dy, x0, y0, x1, y1, x2, y2, segs = path.pathSegList;
for (var x = 0, y = 0, i = 0, len = segs.numberOfItems; i < len; i++) {
var seg = segs.getItem(i)
, c = seg.pathSegTypeAsLetter;
if (/[MLHVCSQTAZz]/.test(c)) {
if ('x1' in seg) x1 = seg.x1 - x;
if ('x2' in seg) x2 = seg.x2 - x;
if ('y1' in seg) y1 = seg.y1 - y;
if ('y2' in seg) y2 = seg.y2 - y;
if ('x' in seg) dx = -x + (x = seg.x);
if ('y' in seg) dy = -y + (y = seg.y);
switch (c) {
case 'M': set('Moveto',dx,dy); break;
case 'L': set('Lineto',dx,dy); break;
case 'H': set('LinetoHorizontal',dx); break;
case 'V': set('LinetoVertical',dy); break;
case 'C': set('CurvetoCubic',dx,dy,x1,y1,x2,y2); break;
case 'S': set('CurvetoCubicSmooth',dx,dy,x2,y2); break;
case 'Q': set('CurvetoQuadratic',dx,dy,x1,y1); break;
case 'T': set('CurvetoQuadraticSmooth',dx,dy); break;
case 'A': set('Arc',dx,dy,seg.r1,seg.r2,seg.angle,
seg.largeArcFlag,seg.sweepFlag); break;
case 'Z': case 'z': x = x0; y = y0; break;
}
}
else {
if ('x' in seg) x += seg.x;
if ('y' in seg) y += seg.y;
}
// store the start of a subpath
if (c == 'M' || c == 'm') {
x0 = x;
y0 = y;
}
}
path.setAttribute('d', path.getAttribute('d').replace(/Z/g, 'z'));
}
// svg pathをthree.jsのshapeに変換する
// スペースの処理とy座標を反転するように修正
// From d3-threeD.js
// https://github.com/asutherland/d3-threeD
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
var DEGS_TO_RADS = Math.PI / 180, UNIT_SIZE = 100;
var DIGIT_0 = 48, DIGIT_9 = 57, COMMA = 44, SPACE = 32, PERIOD = 46, MINUS = 45;
function transformSVGPath(pathStr,obj) {
var path = obj ? new obj() : new THREE.Shape();
var idx = 1, len = pathStr.length, activeCmd,
x = 0, y = 0, nx = 0, ny = 0, firstX = null, firstY = null,
x1 = 0, x2 = 0, y1 = 0, y2 = 0,
rx = 0, ry = 0, xar = 0, laf = 0, sf = 0, cx, cy;
function eatNum() {
var sidx, c, isFloat = false, s;
// eat delims
while (idx < len) {
c = pathStr.charCodeAt(idx);
if (c !== COMMA && c !== SPACE)
break;
idx++;
}
if (c === MINUS)
sidx = idx++;
else
sidx = idx;
// eat number
while (idx < len) {
c = pathStr.charCodeAt(idx);
if (DIGIT_0 <= c && c <= DIGIT_9) {
idx++;
continue;
}
else if (c === PERIOD) {
idx++;
isFloat = true;
continue;
}
s = pathStr.substring(sidx, idx);
return isFloat ? parseFloat(s) : parseInt(s);
}
s = pathStr.substring(sidx);
return isFloat ? parseFloat(s) : parseInt(s);
}
function nextIsNum() {
var c;
// do permanently eat any delims...
while (idx < len) {
c = pathStr.charCodeAt(idx);
if (c !== COMMA && c !== SPACE)
break;
idx++;
}
c = pathStr.charCodeAt(idx);
return (c === MINUS || (DIGIT_0 <= c && c <= DIGIT_9));
}
var canRepeat;
activeCmd = pathStr[0];
while (idx <= len) {
canRepeat = true;
switch (activeCmd) {
// moveto commands, become lineto's if repeated
case 'M':
x = eatNum();
y = -eatNum();
path.moveTo(x, y);
activeCmd = 'L';
firstX = x;
firstY = y;
break;
case 'm':
x += eatNum();
y += -eatNum();
path.moveTo(x, y);
activeCmd = 'l';
firstX = x;
firstY = y;
break;
case 'Z':
case 'z':
canRepeat = false;
if (x !== firstX || y !== firstY)
path.lineTo(firstX, firstY);
break;
// - lines!
case 'L':
case 'H':
case 'V':
nx = (activeCmd === 'V') ? x : eatNum();
ny = (activeCmd === 'H') ? y : -eatNum();
path.lineTo(nx, ny);
x = nx;
y = ny;
break;
case 'l':
case 'h':
case 'v':
nx = (activeCmd === 'v') ? x : (x + eatNum());
ny = (activeCmd === 'h') ? y : (y + -eatNum());
path.lineTo(nx, ny);
x = nx;
y = ny;
break;
// - cubic bezier
case 'C':
x1 = eatNum(); y1 = -eatNum();
case 'S':
if (activeCmd === 'S') {
x1 = 2 * x - x2; y1 = 2 * y - y2;
}
x2 = eatNum();
y2 = -eatNum();
nx = eatNum();
ny = -eatNum();
path.bezierCurveTo(x1, y1, x2, y2, nx, ny);
x = nx; y = ny;
break;
case 'c':
x1 = x + eatNum();
y1 = y + -eatNum();
case 's':
if (activeCmd === 's') {
x1 = 2 * x - x2;
y1 = 2 * y - y2;
}
x2 = x + eatNum();
y2 = y + -eatNum();
nx = x + eatNum();
ny = y + -eatNum();
path.bezierCurveTo(x1, y1, x2, y2, nx, ny);
x = nx; y = ny;
break;
// - quadratic bezier
case 'Q':
x1 = eatNum(); y1 = -eatNum();
case 'T':
if (activeCmd === 'T') {
x1 = 2 * x - x1;
y1 = 2 * y - y1;
}
nx = eatNum();
ny = -eatNum();
path.quadraticCurveTo(x1, y1, nx, ny);
x = nx;
y = ny;
break;
case 'q':
x1 = x + eatNum();
y1 = y + -eatNum();
case 't':
if (activeCmd === 't') {
x1 = 2 * x - x1;
y1 = 2 * y - y1;
}
nx = x + eatNum();
ny = y + -eatNum();
path.quadraticCurveTo(x1, y1, nx, ny);
x = nx; y = ny;
break;
// - elliptical arc
case 'A':
rx = eatNum();
ry = eatNum();
xar = eatNum() * DEGS_TO_RADS;
laf = eatNum();
sf = eatNum();
nx = eatNum();
ny = -eatNum();
if (rx !== ry) {
console.warn("Forcing elliptical arc to be a circular one :(",
rx, ry);
}
// SVG implementation notes does all the math for us! woo!
// http://www.w3.org/TR/SVG/implnote.html#ArcImplementationNotes
// step1, using x1 as x1'
x1 = Math.cos(xar) * (x - nx) / 2 + Math.sin(xar) * (y - ny) / 2;
y1 = -Math.sin(xar) * (x - nx) / 2 + Math.cos(xar) * (y - ny) / 2;
// step 2, using x2 as cx'
var norm = Math.sqrt(
(rx*rx * ry*ry - rx*rx * y1*y1 - ry*ry * x1*x1) /
(rx*rx * y1*y1 + ry*ry * x1*x1));
if (laf === sf)
norm = -norm;
x2 = norm * rx * y1 / ry;
y2 = norm * -ry * x1 / rx;
// step 3
cx = Math.cos(xar) * x2 - Math.sin(xar) * y2 + (x + nx) / 2;
cy = Math.sin(xar) * x2 + Math.cos(xar) * y2 + (y + ny) / 2;
var u = new THREE.Vector2(1, 0),
v = new THREE.Vector2((x1 - x2) / rx,
(y1 - y2) / ry);
var startAng = Math.acos(u.dot(v) / u.length() / v.length());
if (u.x * v.y - u.y * v.x < 0)
startAng = -startAng;
// we can reuse 'v' from start angle as our 'u' for delta angle
u.x = (-x1 - x2) / rx;
u.y = (-y1 - y2) / ry;
var deltaAng = Math.acos(v.dot(u) / v.length() / u.length());
// This normalization ends up making our curves fail to triangulate...
if (v.x * u.y - v.y * u.x < 0)
deltaAng = -deltaAng;
if (!sf && deltaAng > 0)
deltaAng -= Math.PI * 2;
if (sf && deltaAng < 0)
deltaAng += Math.PI * 2;
path.absarc(cx, cy, rx, startAng, startAng + deltaAng, sf);
x = nx;
y = ny;
break;
default:
throw new Error("weird path command: " + activeCmd);
}
// just reissue the command
if (canRepeat && nextIsNum())
continue;
activeCmd = pathStr[idx++];
}
return path;
}
// from gist
// https://gist.github.com/gabrielflorit/3758456
function createShape( shape, color, x, y, z, rx, ry, rz, s ) {
// flat shape
var geometry = new THREE.ShapeGeometry( shape );
var material = new THREE.MeshBasicMaterial({
color: color,
side: THREE.DoubleSide,
overdraw: true
});
var mesh = new THREE.Mesh( geometry, material );
mesh.position.set( x, y, z );
mesh.rotation.set( rx, ry, rz );
mesh.scale.set( s, s, s );
return mesh;
}
// メイン
window.addEventListener('load',function(){
var WIDTH = window.innerWidth, HEIGHT = window.innerHeight;
var renderer = new THREE.WebGLRenderer({ antialias: false, sortObjects: true });
renderer.setSize(WIDTH, HEIGHT);
renderer.setClearColor(0x000000, 1);
renderer.domElement.id = 'console';
renderer.domElement.className = 'console';
renderer.domElement.style.zIndex = 0;
d3.select('#content').node().appendChild(renderer.domElement);
renderer.clear();
// シーンの作成
var scene = new THREE.Scene();
// カメラの作成
var camera = new THREE.PerspectiveCamera(90.0, WIDTH / HEIGHT);
camera.position.x = 0.0;
camera.position.y = 0.0;
camera.position.z = (WIDTH / 2.0) * HEIGHT / WIDTH;
camera.lookAt(new THREE.Vector3(0.0, 0.0, 0.0));
window.addEventListener('resize',function()
{
WIDTH = window.innerWidth;
HEIGHT = window.innerHeight;
renderer.setSize(WIDTH,HEIGHT);
camera.aspect = WIDTH / HEIGHT;
camera.position.z = (WIDTH / 2.0) * HEIGHT / WIDTH;
camera.updateProjectionMatrix();
});
var xml = Q.nfbind(d3.xml);
var gto;
// SVGファイルから馬のメッシュを作る
xml('./horse03.svg','image/svg+xml')
.then(function(svg){
try {
document.querySelector('#svg').appendChild(svg.firstChild);
d3.select('#svg').selectAll('g').each(function(){
var g = d3.select(this);
var boundingBox = g.select('rect').node();
var paths = g.selectAll('path');
var holes = [];
var shape = null;
var shapeId = null;
paths.each(function(){
// 馬セルの取り出しと座標補正
var path = d3.select(this);
convertToRelative(path.node());
var m = path.node().createSVGPathSegMovetoRel
(path.node().pathSegList[0].x - boundingBox.x.baseVal.value - boundingBox.width.baseVal.value / 2.0,
path.node().pathSegList[0].y - boundingBox.y.baseVal.value - boundingBox.height.baseVal.value / 2.0
);
path.node().pathSegList.replaceItem(m,0);
path.attr('d',path.attr('d'));
// svg pathからthree.js shape Meshへの変換
if(path.attr('id').match(/hole/)){
holes.push(transformSVGPath(path.attr('d'),THREE.Path));
} else {
shape = transformSVGPath(path.attr('d'));
shapeId = path.attr('id');
}
});
holes.forEach(function(d){
shape.holes.push(d);
});
var shapeMesh = createShape(shape,0xFFFF00,0,0,0,0,0,0,1.0);
shapeMesh.visible = false;
shapeMesh.name = shapeId;
scene.add(shapeMesh);
});
d3.select('#svg').remove();
} catch (e) {
console.log(e + '\n' + e.stack);
}
//レンダリング
(function render(index){
if(index > 10.0) index = 0.0;
var idx = parseInt(index,10);
scene.getObjectByName('horse' + ('00' + idx.toString(10)).slice(-2)).visible = true;
if(idx == 0){
scene.getObjectByName('horse10').visible = false;
} else {
scene.getObjectByName('horse' + ('00' + (idx - 1).toString(10)).slice(-2)).visible = false;
}
renderer.render(scene,camera);
index += 0.25;
requestAnimationFrame(render.bind(null,index));
})(0);
// console.log(d3.select('#svg').html());
});
});
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment