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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<!-- Global site tag (gtag.js) - Google Analytics -->
<script async src="https://www.googletagmanager.com/gtag/js?id=UA-55184745-3"></script>
<script>
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments);}
gtag('js', new Date());
gtag('config', 'UA-55184745-3');
</script>
<meta charset="utf-8">
<title>Isochrone map of Seoul Subway</title>
<script src="https://unpkg.com/delaunator@3.0.2/delaunator.min.js"></script>
<script src="geoLine.js"></script>
<script src="nodeData.js"></script>
<script src="linkData.js"></script>
<script src="groupData.js"></script>
<meta name="viewport" content="width=device-width, height=device-height, user-scalable=no" />
<style type="text/css">
html {
min-height: 100% !important;
width: 100%;
height: 100%;
}
/* border 제거 */
body {
margin-left : 0;
margin-right : 0;
margin-top : 0;
margin-bottom : 0;
border: 0;
background-color: black;
}
.container {
position: relative;
}
/* canvas를 viewport 크기로 만들기 */
canvas {
width: 100vw;
height: 100vh;
display: block;
}
#text {
background-color: transparent; /* needed because webgl-tutoraisl.css sets canvas bg color to white */
position: absolute;
left: 0px;
top: 0px;
z-index: 10;
-webkit-text-fill-color: aliceblue;
}
</style>
<script type="text/javascript">
var gl; // A global variable for the WebGL context
//https://www.geeksforgeeks.org/implementation-priority-queue-javascript/
class QElement {
constructor(element, priority)
{
this.element = element;
this.priority = priority;
}
}
class PriorityQueue {
constructor()
{
this.items = [];
}
enqueue(element, priority)
{
var qElement = new QElement(element, priority);
var contain = false;
for (var i = 0; i < this.items.length; i++) {
if (this.items[i].priority > qElement.priority) {
this.items.splice(i, 0, qElement);
contain = true;
break;
}
}
if (!contain) {
this.items.push(qElement);
}
}
dequeue()
{
if (this.isEmpty())
return "Underflow";
return this.items.shift();
}
front()
{
if (this.isEmpty())
return "No elements in Queue";
return this.items[0];
}
rear()
{
if (this.isEmpty())
return "No elements in Queue";
return this.items[this.items.length - 1];
}
isEmpty()
{
return this.items.length == 0;
}
}
// 이 코드나 관련된 데이터를 사용하실 경우, 코드에 다음의 주석을 반드시 남겨주시기 바랍니다.
// source : https://github.com/vuski/seoulsubway
function ShaderVars() {
var shader;
var zscale;
var timelimit;
var translation;
var originNode;
var drawGroup;
ShaderVars.prototype.setUniformLoc = function () {
this.translation = gl.getUniformLocation(this.shader, "trans");
this.zscale = gl.getUniformLocation(this.shader, "zscale");
this.timelimit = gl.getUniformLocation(this.shader, "timeCriteria");
this.originNode = gl.getUniformLocation(this.shader, "origin");
this.drawGroup = gl.getUniformLocation(this.shader, "drawGroup");
}
var posAttrLoc;
var colorAttrLoc;
var groupAttrLoc;
var distAttrLoc;
var idAttrLoc;
var checkedAttrLoc;
}
function BufferObject() {
var vbo;
var idxbo;
var numObj;
var numIndex;
}
function Graph() {
var rowOffset;
var colIndex;
var value;
}
var shaderIsochrone;
var boIsochrone;
var shaderSbNode;
var boSbNode
var shaderSbLink;
var boSbLink;
var canvas;
var textCanvas;
var ctx;
var scrW;
var scrH;
var whRatio;
var cenX = 954423.0;
var cenY = 1950874.0;
var zoomR = 1;
var minX = cenX-10000*zoomR;
var maxX = cenX+10000*zoomR;
var minY;
var calR;
var maxY;
var graph;
var originNode =0;
var drag = false;
var oldx, oldy;
var dx = 0, dy = 0;
var mx,my;
var drawGroup = 0;
var nodeData;
var linkData;
var checkedNodeRaw;
var checkedNode;
var nodeDataRawNumFromSample;
var predecessor;
var checkedNodeCurrentSet = new Set();
var solution;
var helpOn = true;
function main() {
canvas = document.getElementById("glcanvas");
textCanvas = document.getElementById("text");
gl = initWebGL(canvas); // Initialize the GL context
// Only continue if WebGL is available and working
if (!gl) return;
console.log(gl.getParameter(gl.ALIASED_LINE_WIDTH_RANGE));
recalculateMaxY();
//1회만 하는 초기화
checkedNodeRaw = new Array(nodeDataRaw.length);
for (var i=0 ; i<nodeDataRaw.length ; i++) {
checkedNodeRaw[i] = -1;
}
//현재 그룹에 맞게 노드와 링크 데이터를 재정비한다.
refreshData();
setCSRGraph();
//subway station shader
shaderSbNode = new ShaderVars();
boSbNode = new BufferObject();
shaderSbNode.shader = getShader("sbNodeVertex", "sbNodeFragment");
shaderSbNode.setUniformLoc();
setNodeDataToBuffer();
shaderSbLink = new ShaderVars();
boSbLink = new BufferObject();
shaderSbLink.shader = getShader("sbLinkVertex", "sbLinkFragment");
shaderSbLink.setUniformLoc();
setLinkDataToBuffer();
//isochronemap shader
shaderIsochrone = new ShaderVars();
boIsochrone = new BufferObject();
shaderIsochrone.shader = getShader("isoVertex", "isoFragment");
shaderIsochrone.setUniformLoc();
setIsochroneToBuffer();
resize(gl.canvas);
//알아서 주사율 맞춰서 조정
textCanvas.addEventListener("mousedown", mouseDown, false);
textCanvas.addEventListener("mouseup", mouseUp, false);
textCanvas.addEventListener("mousemove", mouseMove, false);
textCanvas.addEventListener("wheel", mouseWheel, false);
//http://bencentra.com/code/2014/12/05/html5-canvas-touch-events.html
// Set up touch events for mobile, etc
//textCanvas.addEventListener("touchstart", touchStart, false);
textCanvas.addEventListener("touchend", mouseUp, false);
textCanvas.addEventListener("touchmove", mouseMove, false);
/*
// Prevent scrolling when touching the canvas
document.body.addEventListener("touchstart", function (e) {
if (e.target == textCanvas) {
e.preventDefault();
}
}, false);
document.body.addEventListener("touchend", function (e) {
if (e.target == textCanvas) {
e.preventDefault();
}
}, false);
document.body.addEventListener("touchmove", function (e) {
if (e.target == textCanvas) {
e.preventDefault();
}
}, false);
*/
window.addEventListener('keydown', keydown);
requestAnimationFrame(render);
}
function render() {
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); // Clear the color as well as the depth buffer.
resize(gl.canvas);
gl.viewport(0, 0, gl.canvas.width, gl.canvas.height);
recalculateMaxY();
//gl.lineWidth(50);
//AttrLoc를 일단 모든 경우에 대해서 지정해 주어야 문제가 안 생김. 해결하려면 함수 구조체를 쓰지 말아야 함
gl.vertexAttribPointer(boSbNode.colorAttrLoc, 3, gl.FLOAT, false, 0, 4*2* boSbNode.numObj);
gl.vertexAttribPointer(boSbNode.groupAttrLoc, 1, gl.FLOAT, false, 0, 4*5* boSbNode.numObj);
gl.vertexAttribPointer(boSbNode.idAttrLoc, 1, gl.FLOAT, false, 0, 4*6* boSbNode.numObj);
gl.vertexAttribPointer(boSbNode.checkedAttrLoc, 1, gl.FLOAT, false, 0, 4*7* boSbNode.numObj);
//gl.blendFunc(gl.SRC_ALPHA, gl.ONE);
gl.useProgram(shaderIsochrone.shader);
gl.uniform4f(shaderIsochrone.translation, cenX, cenY, maxX-minX, whRatio );
gl.bindBuffer(gl.ARRAY_BUFFER, boIsochrone.vbo);
gl.vertexAttribPointer(boIsochrone.posAttrLoc, 2, gl.FLOAT, false, 0, 0);
gl.vertexAttribPointer(boIsochrone.distAttrLoc, 1, gl.FLOAT, false, 0, 4*2* boIsochrone.numObj);
gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, boIsochrone.idxbo);
gl.drawElements(gl.TRIANGLES, boIsochrone.numIndex, gl.UNSIGNED_SHORT, 0);
gl.enable(gl.BLEND);
gl.blendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA);
gl.useProgram(shaderSbLink.shader);
gl.uniform4f(shaderSbLink.translation, cenX, cenY, maxX-minX, whRatio );
gl.uniform1f(shaderSbLink.drawGroup, drawGroup );
gl.bindBuffer(gl.ARRAY_BUFFER, boSbLink.vbo);
gl.vertexAttribPointer(shaderSbLink.posAttrLoc, 2, gl.FLOAT, false, 0, 0);
gl.vertexAttribPointer(shaderSbLink.colorAttrLoc, 4, gl.FLOAT, false, 0, 4*2* boSbLink.numObj);
gl.vertexAttribPointer(shaderSbLink.groupAttrLoc, 1, gl.FLOAT, false, 0, 4*6* boSbLink.numObj);
gl.vertexAttribPointer(shaderSbLink.checkedAttrLoc, 1, gl.FLOAT, false, 0, 4*7* boSbLink.numObj);
gl.drawArrays(gl.TRIANGLES, 0, boSbLink.numObj);
gl.enable(gl.BLEND);
gl.blendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA);
gl.useProgram(shaderSbNode.shader);
gl.uniform4f(shaderSbNode.translation, cenX, cenY, maxX-minX, whRatio );
gl.uniform1f(shaderSbNode.originNode, originNode );
gl.uniform1f(shaderSbNode.drawGroup, drawGroup );
gl.bindBuffer(gl.ARRAY_BUFFER, boSbNode.vbo);
gl.vertexAttribPointer(boSbNode.posAttrLoc, 2, gl.FLOAT, false, 0, 0);
gl.vertexAttribPointer(boSbNode.colorAttrLoc, 3, gl.FLOAT, false, 0, 4*2* boSbNode.numObj);
gl.vertexAttribPointer(boSbNode.groupAttrLoc, 1, gl.FLOAT, false, 0, 4*5* boSbNode.numObj);
gl.vertexAttribPointer(boSbNode.idAttrLoc, 1, gl.FLOAT, false, 0, 4*6* boSbNode.numObj);
gl.vertexAttribPointer(boSbNode.checkedAttrLoc, 1, gl.FLOAT, false, 0, 4*7* boSbNode.numObj);
gl.drawArrays(gl.POINTS, 0, boSbNode.numObj);
if (helpOn) {
ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
ctx.textAlign = 'center';
ctx.textBaseline = "top";
//ctx.font = "50px '맑은 고딕'";
//ctx.fillStyle = "rgba(255,255,255,1)";
//ctx.fillText(nodeData[originNode].ln+"/"+nodeData[originNode].nm, scrW/2,scrH/20);
ctx.font = "bold 40px '맑은 고딕'";
ctx.fillStyle = "rgba(220,220,220,1)";
ctx.fillText("수도권 지하철 시간 거리 지도 ver 0.9", scrW/2,30);
ctx.font = "bold 20px '맑은 고딕'";
ctx.fillStyle = "rgba(150,150,150,1)";
ctx.fillText("출발역으로부터 30 /60 /90 /120분 권역", scrW/2,80);
ctx.font = "30px '맑은 고딕'";
ctx.fillStyle = "rgba(200,200,200,1)";
ctx.fillText("← "+groupData[drawGroup]+" →", scrW/2, 120);
ctx.textBaseline = "bottom";
ctx.textAlign = 'left';
ctx.font = "15px '맑은 고딕'";
ctx.fillStyle = "rgba(255,255,255,1)";
ctx.fillText("*. 휴대폰 조작은 구현되어 있지 않습니다.pc로 접속해주세요",15, scrH-220);
ctx.font = "15px '맑은 고딕'";
ctx.fillStyle = "rgba(200,200,200,1)";
ctx.fillText("*. 키보드 h 키를 눌러서 아래 설명을 숨길 수 있습니다.",15, scrH-200);
ctx.font = "20px '맑은 고딕'";
ctx.fillStyle = "rgba(150,150,150,1)";
ctx.fillText("마우스를 역 근처로 옮기면 해당 역을 출발점으로 둔 시간거리지도를 볼 수 있습니다",15, scrH-170);
ctx.font = "20px '맑은 고딕'";
ctx.fillStyle = "rgba(150,150,150,1)";
ctx.fillText("마우스로 역을 클릭하여 소요시간이 표시되는 여러 개의 목적지를 설정할 수 있습니다." ,15, scrH-145);
//ctx.font = "20px '맑은 고딕'";
//ctx.fillStyle = "rgba(150,150,150,1)";
//ctx.fillText("한 곳의 출발지로부터 다수의 목적지까지 소요시간을 보여줍니다." ,15, scrH-120);
ctx.font = "20px '맑은 고딕'";
ctx.fillStyle = "rgba(150,150,150,1)";
ctx.fillText("마우스로 선택한 역을 다시 클릭하면 취소할 수 있습니다. 키보드 r 키로 전체 역을 취소할 수 있습니다" ,15, scrH-120);
ctx.font = "20px '맑은 고딕'";
ctx.fillStyle = "rgba(150,150,150,1)";
ctx.fillText("마우스 휠버튼으로 화면을 확대축소하거나 움직일 수 있습니다(zoom&pan)" ,15, scrH-85);
ctx.font = "20px '맑은 고딕'";
ctx.fillStyle = "rgba(150,150,150,1)";
ctx.fillText("키보드 좌우 화살표키를 눌러 건설 예정 노선이 반영된 시간 거리 지도를 볼 수 있습니다" ,15, scrH-60);
ctx.font = "14px '맑은 고딕'";
ctx.fillStyle = "rgba(150,150,150,1)";
ctx.fillText("*. 건설 예정 시기는 정확하지 않을 수 있습니다. 타당성 조사중이거나 건설 여부가 불투명한 노선도 포함되어 있습니다." ,15, scrH-45);
ctx.font = "20px '맑은 고딕'";
ctx.fillStyle = "rgba(150,150,150,1)";
ctx.fillText("https://www.vw-lab.com/68" ,15, scrH-20);
if (originNode>=0) {
ctx.font = "bold 30px '맑은 고딕'";
ctx.fillStyle = "rgba(255,255,255,1)";
ctx.fillText(nodeData[originNode].ln+"/"+nodeData[originNode].nm
, (nodeData[originNode].x-cenX)/(maxX-minX)*(scrW/2)+(scrW/2)
, (nodeData[originNode].y-cenY)/(maxX-minX)*(scrH/2*whRatio)*-1+scrH/2-15);
checkedNodeCurrentSet.forEach((value, key, s) => {
ctx.font = "bold 20px '맑은 고딕'";
ctx.fillStyle = "rgba(255,255,255,1)";
ctx.fillText(nodeData[value].nm + " | "+ Math.floor(solution[value]/60) +"분"
, (nodeData[value].x-cenX)/(maxX-minX)*(scrW/2)+(scrW/2)
, (nodeData[value].y-cenY)/(maxX-minX)*(scrH/2*whRatio)*-1+scrH/2-15);
//console.log(value +" | " + nodeData[value].nm + "|"+ solution[value] );
});
}
}
else {
ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
ctx.textAlign = 'center';
ctx.textBaseline = "top";
ctx.font = "30px '맑은 고딕'";
ctx.fillStyle = "rgba(200,200,200,1)";
ctx.fillText("← "+groupData[drawGroup]+" →", scrW/2, 30);
ctx.textBaseline = "bottom";
ctx.textAlign = 'left';
ctx.font = "15px '맑은 고딕'";
ctx.fillStyle = "rgba(200,200,200,1)";
ctx.fillText("'h' key : 도움말",15, scrH-20);
if (originNode>=0) {
ctx.font = "bold 30px '맑은 고딕'";
ctx.fillStyle = "rgba(255,255,255,1)";
ctx.fillText(nodeData[originNode].ln+"/"+nodeData[originNode].nm
, (nodeData[originNode].x-cenX)/(maxX-minX)*(scrW/2)+(scrW/2)
, (nodeData[originNode].y-cenY)/(maxX-minX)*(scrH/2*whRatio)*-1+scrH/2-15);
checkedNodeCurrentSet.forEach((value, key, s) => {
ctx.font = "bold 20px '맑은 고딕'";
ctx.fillStyle = "rgba(255,255,255,1)";
ctx.fillText(nodeData[value].nm + " | "+ Math.floor(solution[value]/60) +"분"
, (nodeData[value].x-cenX)/(maxX-minX)*(scrW/2)+(scrW/2)
, (nodeData[value].y-cenY)/(maxX-minX)*(scrH/2*whRatio)*-1+scrH/2-15);
//console.log(value +" | " + nodeData[value].nm + "|"+ solution[value] );
});
}
}
//requestAnimationFrame(render);
}
function doSolveSSSP() {
var startTime = new Date().getTime();
solution = new Float32Array(nodeData.length);
predecessor = new Array(nodeData.length);
for (var i=0 ; i<nodeData.length ; i++) {
solution[i] = 3600*10;
predecessor[i] = -1;
}
var timeDistance = 99999;
solution = solveSSSP(originNode,timeDistance, graph, solution);
var endTime = new Date().getTime();
//console.log((endTime-startTime)+"ms");
gl.bindBuffer(gl.ARRAY_BUFFER, boIsochrone.vbo);
gl.bufferSubData(gl.ARRAY_BUFFER, 4 * 2 * boIsochrone.numObj, new Float32Array(solution));
var checkedNodeSet = new Set();
checkedNodeCurrentSet = new Set();
checkedNodeSet.add(nodeDataRawNumFromSample[originNode]);
//점 체크용
for (var i=0 ; i<checkedNode.length ; i++) {
if (checkedNode[i]==10) { //일단 지난번 경로 선택은 초기화 시킨다.
checkedNode[i] = -1;
}
}
for (var i=0 ; i<checkedNode.length ; i++) {
if (checkedNode[i]==1) {
checkedNodeCurrentSet.add(i);
checkedNodeSet.add(nodeDataRawNumFromSample[i]);
var traceIndex = predecessor[i];
//두번째 조건식 없으면 경로들이 덮어쓰면서 지워짐. 덩달아 루프 시간 단축 효과
while(predecessor[traceIndex]>=0 && checkedNode[traceIndex] != 1) {
checkedNode[traceIndex] = 10;
checkedNodeSet.add(nodeDataRawNumFromSample[traceIndex]);
traceIndex = predecessor[traceIndex];
}
}
}
gl.bindBuffer(gl.ARRAY_BUFFER, boSbNode.vbo);
gl.bufferSubData(gl.ARRAY_BUFFER, 4*7* boSbNode.numObj, new Float32Array(checkedNode));
var checked;
var checkedMark = new Array(boSbLink.numObj);
//라인 체크용
count = 0;
//console.log("size:"+checkedNodeSet.size);
for (var i=0 ; i<geoLine.length ; i++) {
if ( checkedNodeSet.has(geoLine[i].fr) && checkedNodeSet.has(geoLine[i].to) ) {
checked = 1;
} else {
checked = -1;
}
for (var j=0 ; j< geoLine[i].crd.length-1 ;j++ ) {
for (var c = 0; c<6; c++) {
checkedMark[count*6+c] = checked;
}
count++;
}
}
gl.bindBuffer(gl.ARRAY_BUFFER, boSbLink.vbo);
gl.bufferSubData(gl.ARRAY_BUFFER, 4*7* boSbLink.numObj, new Float32Array(checkedMark));
}
function solveSSSP(startNode,timeDistance, graph, solution) {
var i;
var startTime,endTime;
var currentNode, nextNodeId;
var scanBegin, scanEnd;
var currentQueue = new PriorityQueue();
//시작점의 정보를 입력
solution[startNode] = 0;
predecessor[startNode] = -1;
currentQueue.enqueue(startNode, 0.0);
//int cnt = 0;
while (!currentQueue.isEmpty()) {
var currentNodeQ = currentQueue.front();
currentNode = currentNodeQ.element;
startTime = currentNodeQ.priority;
scanBegin = graph.rowOffset[currentNode];
scanEnd = graph.rowOffset[currentNode + 1];
//console.log(scanBegin+","+scanEnd);
for (i = scanBegin; i < scanEnd; i++) {
endTime = startTime + graph.value[i];
nextNodeId = graph.colIndex[i];
if (endTime < timeDistance) {
if (solution[nextNodeId] > endTime) {
solution[nextNodeId] = endTime;
predecessor[nextNodeId] = currentNode;
currentQueue.enqueue(nextNodeId, endTime);
}
}
}
currentQueue.dequeue();
} //while currentQueue >0
return solution;
}
function setCSRGraph() {
graph = new Graph();
graph.rowOffset = new Array(nodeData.length);
graph.colIndex = new Array(linkData.length);
graph.value = new Array(linkData.length);
var rowIndex = 0;
for (var i=0; i<linkData.length ; i++) {
while (rowIndex <= linkData[i][0]) {
graph.rowOffset[rowIndex] = i;
rowIndex++;
}
graph.colIndex[i] = linkData[i][1];
if (nodeData[linkData[i][0]].gr > drawGroup
|| nodeData[linkData[i][1]].gr > drawGroup) {
graph.value[i] = 36000;
} else {
graph.value[i] = linkData[i][2];
}
}
graph.rowOffset[rowIndex] = linkData.length;
}
function setIsochroneToBuffer() {
//var startTime = new Date().getTime();
var dpoints = new Array(nodeData.length);
var position = new Array(nodeData.length*2);
var distance = new Array(nodeData.length);
for (var i=0; i<nodeData.length ; i++) {
dpoints[i] = [nodeData[i].x, nodeData[i].y];
position[i*2+0] = nodeData[i].x;
position[i*2+1] = nodeData[i].y;
distance[i] = 999999;
}
const delaunay = Delaunator.from(dpoints);
//console.log(delaunay.triangles);
var triangleIndex = new Uint16Array(delaunay.triangles.length);
for (var i=0 ; i<delaunay.triangles.length ; i++) {
triangleIndex[i] = delaunay.triangles[i];
}
boIsochrone.numObj = nodeData.length;
boIsochrone.numIndex = delaunay.triangles.length;
boIsochrone.vbo = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, boIsochrone.vbo);
gl.bufferData(gl.ARRAY_BUFFER, 4 * 3 * boIsochrone.numObj , gl.DYNAMIC_DRAW);
gl.bufferSubData(gl.ARRAY_BUFFER, 0, new Float32Array(position));
doSolveSSSP();//새로 계산해서 subData넣는다.
//gl.bufferSubData(gl.ARRAY_BUFFER, 4 * 2 * boIsochrone.numObj, new Float32Array(distance));
boIsochrone.posAttrLoc = gl.getAttribLocation(shaderIsochrone.shader, "pos");
boIsochrone.distAttrLoc = gl.getAttribLocation(shaderIsochrone.shader, "distance");
gl.enableVertexAttribArray(boIsochrone.posAttrLoc);
gl.enableVertexAttribArray(boIsochrone.distAttrLoc);
boIsochrone.idxbo = gl.createBuffer();
gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, boIsochrone.idxbo);
gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, new Uint16Array(triangleIndex) , gl.STATIC_DRAW);
var endTime = new Date().getTime();
//console.log("done:"+(endTime-startTime));
}
function setLinkDataToBuffer() {
var startTime = new Date().getTime();
var count = 0;
for (var i=0 ; i<geoLine.length; i++) {
for (var j=0 ; j<geoLine[i].crd.length-1 ; j++) {
if (geoLine[i].crd[j][0] == geoLine[i].crd[j+1][0]
&& geoLine[i].crd[j][1] == geoLine[i].crd[j+1][1]) {
geoLine[i].crd = geoLine[i].crd.slice(0,j+1).concat(geoLine[i].crd.slice(j+2));
j--;
}
} //중복점 제거
count += (geoLine[i].crd.length-1)*6; //*6은 삼각형 두개
}
boSbLink.numObj = count; //점의 수를 가리킴
//console.log(boSbLink.numObj);
var pos = new Array(boSbLink.numObj * 2); // xy2개
var color = new Array(boSbLink.numObj * 4); //rgb 3개
var group = new Array(boSbLink.numObj); //
var checked = new Array(boSbLink.numObj);
//var order = [0, 1, 2, 2,1,3];
count = 0;
var r,g,b,a,groupSub;
var thickness = 200;
for (var i=0 ; i<geoLine.length ; i++) {
r = parseInt(geoLine[i].cl.substring(1,3), 16)/255.0;
g = parseInt(geoLine[i].cl.substring(3,5), 16)/255.0;
b = parseInt(geoLine[i].cl.substring(5), 16)/255.0;
groupSub = geoLine[i].gr;
var coord = geoLine[i].crd;
var direction0 = normalize(coord[0][0],coord[0][1], coord[1][0], coord[1][1]);
var dr = rotate(direction0, -90);
var p0 = [coord[0][0]+dr[0]*thickness, coord[0][1]+dr[1]*thickness];
var p1 = [coord[0][0]-dr[0]*thickness, coord[0][1]-dr[1]*thickness];
//console.log(p0);
if (coord.length==2) { //점이 두개면 각각 직각으로 돌려서 삼각형
var p2 = [coord[1][0]+dr[0]*thickness, coord[1][1]+dr[1]*thickness];
var p3 = [coord[1][0]-dr[0]*thickness, coord[1][1]-dr[1]*thickness];
pos[count*12 + 0] = p0[0];
pos[count*12 + 1] = p0[1];
pos[count*12 + 2] = p1[0];
pos[count*12 + 3] = p1[1];
pos[count*12 + 4] = p2[0];
pos[count*12 + 5] = p2[1];
pos[count*12 + 6] = p2[0];
pos[count*12 + 7] = p2[1];
pos[count*12 + 8] = p1[0];
pos[count*12 + 9] = p1[1];
pos[count*12 + 10] = p3[0];
pos[count*12 + 11] = p3[1];
for (var c = 0; c<6; c++) {
color[count*24+c*4+0] = r;
color[count*24+c*4+1] = g;
color[count*24+c*4+2] = b;
color[count*24+c*4+3] = (c<4&&c!=1)? 1.0 :-1.0;
group[count*6+c] = groupSub;
checked[count*6+c] = -1;
}
count++;
} else { //점이 두개 이상이면 일단 두번째 점까지
var direction1 = normalize(coord[1][0],coord[1][1], coord[2][0], coord[2][1]);
dr = normalize0([-direction0[0]+direction1[0], -direction0[1]+direction1[1]]);
if (isNaN(dr[0])||!isFinite[dr[0]]) dr = rotate(direction1, -90);
var dr2 = rotate(direction0, -90);
var dotValue = dotVectors(dr,dr2);
//console.log(dotValue);
var p2 = [coord[1][0]+dr[0]*thickness/dotValue, coord[1][1]+dr[1]*thickness/dotValue];
var p3 = [coord[1][0]-dr[0]*thickness/dotValue, coord[1][1]-dr[1]*thickness/dotValue];
pos[count*12 + 0] = p0[0];
pos[count*12 + 1] = p0[1];
pos[count*12 + 2] = p1[0];
pos[count*12 + 3] = p1[1];
pos[count*12 + 4] = p2[0];
pos[count*12 + 5] = p2[1];
pos[count*12 + 6] = p2[0];
pos[count*12 + 7] = p2[1];
pos[count*12 + 8] = p1[0];
pos[count*12 + 9] = p1[1];
pos[count*12 + 10] = p3[0];
pos[count*12 + 11] = p3[1];
for (var c = 0; c<6; c++) {
color[count*24+c*4+0] = r;
color[count*24+c*4+1] = g;
color[count*24+c*4+2] = b;
color[count*24+c*4+3] = (c<4&&c!=1)? 1.0 :-1.0;
group[count*6+c] = groupSub;
checked[count*6+c] = -1;
}
//치환해서 다음으로 넘기기
p0 = p2;
p1 = p3;
direction0 = direction1;
count++;
for (var j=2 ; j<coord.length-1 ;j++ ) {
direction1 = normalize(coord[j][0],coord[j][1], coord[j+1][0], coord[j+1][1]);
dr = normalize0([-direction0[0]+direction1[0], -direction0[1]+direction1[1]]);
if (isNaN(dr[0])||!isFinite[dr[0]]) dr = rotate(direction1, -90);
dr2 = rotate(direction0, -90);
dotValue = dotVectors(dr,dr2);
p2 = [coord[j][0]+dr[0]*thickness/dotValue, coord[j][1]+dr[1]*thickness/dotValue];
p3 = [coord[j][0]-dr[0]*thickness/dotValue, coord[j][1]-dr[1]*thickness/dotValue];
pos[count*12 + 0] = p0[0];
pos[count*12 + 1] = p0[1];
pos[count*12 + 2] = p1[0];
pos[count*12 + 3] = p1[1];
pos[count*12 + 4] = p2[0];
pos[count*12 + 5] = p2[1];
pos[count*12 + 6] = p2[0];
pos[count*12 + 7] = p2[1];
pos[count*12 + 8] = p1[0];
pos[count*12 + 9] = p1[1];
pos[count*12 + 10] = p3[0];
pos[count*12 + 11] = p3[1];
for (var c = 0; c<6; c++) {
color[count*24+c*4+0] = r;
color[count*24+c*4+1] = g;
color[count*24+c*4+2] = b;
color[count*24+c*4+3] = (c<4&&c!=1)? 1.0 :-1.0;
group[count*6+c] = groupSub;
checked[count*6+c] = -1;
}
p0 = p2;
p1 = p3;
direction0 = direction1;
count++;
//console.log(nodeData[i]);
//console.log((pos[i*2]-cenX)/(maxX-minX));
//console.log(color[i*3 + 0]+","+color[i*3 + 1]+","+color[i*3 + 2]);
}
//여기까지면 마지막 점만 남기고 다 추가함
dr = rotate(direction0, -90);
p2 = [coord[coord.length-1][0]+dr[0]*thickness, coord[coord.length-1][1]+dr[1]*thickness];
p3 = [coord[coord.length-1][0]-dr[0]*thickness, coord[coord.length-1][1]-dr[1]*thickness];
//마지막 점 추가
pos[count*12 + 0] = p0[0];
pos[count*12 + 1] = p0[1];
pos[count*12 + 2] = p1[0];
pos[count*12 + 3] = p1[1];
pos[count*12 + 4] = p2[0];
pos[count*12 + 5] = p2[1];
pos[count*12 + 6] = p2[0];
pos[count*12 + 7] = p2[1];
pos[count*12 + 8] = p1[0];
pos[count*12 + 9] = p1[1];
pos[count*12 + 10] = p3[0];
pos[count*12 + 11] = p3[1];
for (var c = 0; c<6; c++) {
color[count*24+c*4+0] = r;
color[count*24+c*4+1] = g;
color[count*24+c*4+2] = b;
color[count*24+c*4+3] = (c<4&&c!=1)? 1.0 :-1.0;
group[count*6+c] = groupSub;
checked[count*6+c] = -1;
}
count++;
}
}
console.log("count:"+count);
console.log( boSbLink.numObj);
//console.log(4*8*boSbLink.numObj );
boSbLink.vbo = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, boSbLink.vbo);
gl.bufferData(gl.ARRAY_BUFFER, 4*8*boSbLink.numObj , gl.STATIC_DRAW);
gl.bufferSubData(gl.ARRAY_BUFFER, 0, new Float32Array(pos));
gl.bufferSubData(gl.ARRAY_BUFFER, 4*2* boSbLink.numObj, new Float32Array(color));
gl.bufferSubData(gl.ARRAY_BUFFER, 4*6* boSbLink.numObj, new Float32Array(group));
gl.bufferSubData(gl.ARRAY_BUFFER, 4*7* boSbLink.numObj, new Float32Array(checked));
shaderSbLink.posAttrLoc = gl.getAttribLocation(shaderSbLink.shader, "pos");
shaderSbLink.colorAttrLoc = gl.getAttribLocation(shaderSbLink.shader, "color");
shaderSbLink.groupAttrLoc = gl.getAttribLocation(shaderSbLink.shader, "grpclass");
shaderSbLink.checkedAttrLoc = gl.getAttribLocation(shaderSbLink.shader, "checked");
gl.enableVertexAttribArray(shaderSbLink.posAttrLoc);
gl.enableVertexAttribArray(shaderSbLink.colorAttrLoc);
gl.enableVertexAttribArray(shaderSbLink.groupAttrLoc);
gl.enableVertexAttribArray(shaderSbLink.checkedAttrLoc);
var endTime = new Date().getTime();
console.log((endTime-startTime)+"ms");
}
function setNodeDataToBuffer() {
boSbNode.numObj = nodeDataRaw.length;
//console.log(boSbNode.numObj);
var pos = new Array(boSbNode.numObj * 2);
var color = new Array(boSbNode.numObj * 3);
var group = new Array(boSbNode.numObj);
var id = new Array(boSbNode.numObj);
for (var i=0 ; i<boSbNode.numObj ; i++) {
pos[i*2 + 0] = nodeDataRaw[i].x;
pos[i*2 + 1] = nodeDataRaw[i].y;
color[i*3 + 0] = parseInt(nodeDataRaw[i].cl.substring(1,3), 16)/255.0;
color[i*3 + 1] = parseInt(nodeDataRaw[i].cl.substring(3,5), 16)/255.0;
color[i*3 + 2] = parseInt(nodeDataRaw[i].cl.substring(5), 16)/255.0;
group[i] = nodeDataRaw[i].gr;
id[i] = nodeDataRaw[i].no;
}
boSbNode.vbo = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, boSbNode.vbo);
gl.bufferData(gl.ARRAY_BUFFER, 4*8*boSbNode.numObj , gl.STATIC_DRAW);
gl.bufferSubData(gl.ARRAY_BUFFER, 0, new Float32Array(pos));
gl.bufferSubData(gl.ARRAY_BUFFER, 4*2* boSbNode.numObj, new Float32Array(color));
gl.bufferSubData(gl.ARRAY_BUFFER, 4*5* boSbNode.numObj, new Float32Array(group));
gl.bufferSubData(gl.ARRAY_BUFFER, 4*6* boSbNode.numObj, new Float32Array(id));
gl.bufferSubData(gl.ARRAY_BUFFER, 4*7* boSbNode.numObj, new Float32Array(checkedNode));
boSbNode.posAttrLoc = gl.getAttribLocation(shaderSbNode.shader, "pos");
boSbNode.colorAttrLoc = gl.getAttribLocation(shaderSbNode.shader, "color");
boSbNode.groupAttrLoc = gl.getAttribLocation(shaderSbNode.shader, "grpclass");
boSbNode.idAttrLoc = gl.getAttribLocation(shaderSbNode.shader, "nodeId");
boSbNode.checkedAttrLoc = gl.getAttribLocation(shaderSbNode.shader, "checked");
gl.enableVertexAttribArray(boSbNode.posAttrLoc);
gl.enableVertexAttribArray(boSbNode.colorAttrLoc);
gl.enableVertexAttribArray(boSbNode.groupAttrLoc);
gl.enableVertexAttribArray(boSbNode.idAttrLoc);
gl.enableVertexAttribArray(boSbNode.checkedAttrLoc);
}
function initWebGL(canvas) {
gl = null;
try {
// Try to grab the standard context. If it fails, fallback to experimental.
gl = canvas.getContext("webgl")|| canvas.getContext("experimental-webgl");
}
catch (e) { }
// If we don't have a GL context, give up now
if (!gl) {
alert("Unable to initialize WebGL. Your browser may not support it.");
gl = null;
}
resize(gl.canvas);
gl.viewport(0, 0, scrW, scrH);
gl.clearColor(0.0, 0.0, 0.0, 1.0);
gl.enable(gl.DEPTH_TEST);
gl.depthFunc(gl.LEQUAL);
gl.enable(gl.BLEND);
gl.blendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA);
gl.getExtension('OES_standard_derivatives');
//console.log(gl.getParameter(gl.SAMPLE_COVERAGE_VALUE)); // 0.5
//console.log(gl.getParameter(gl.SAMPLE_COVERAGE_INVERT)); // false
//gl.enable(gl.SAMPLE_COVERAGE);
//gl.sampleCoverage(1, false);
//gl.getExtension('OES_element_index_uint');
return gl;
}
function getShader(vertexName, fragmentName) {
var vertexShaderSource = document.getElementById(vertexName).text;
var fragmentShaderSource = document.getElementById(fragmentName).text;
var vertexShader = gl.createShader(gl.VERTEX_SHADER);
var fragmentShader = gl.createShader(gl.FRAGMENT_SHADER);
gl.shaderSource(vertexShader, vertexShaderSource);
gl.shaderSource(fragmentShader, fragmentShaderSource);
gl.compileShader(vertexShader);
gl.compileShader(fragmentShader);
if (!gl.getShaderParameter(vertexShader, gl.COMPILE_STATUS)) {