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openjscad.js
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openjscad.js
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// == openjscad.js, originally written by Joost Nieuwenhuijse (MIT License)
// few adjustments by Rene K. Mueller <[email protected]> for OpenJSCAD.org
//
// History:
// 2016/06/27: 0.5.1: incrementing version number for release
// 2016/05/01: 0.5.0: added SVG import and export, added options to Processor and View classes, allow more flexibility in HTML by Z3 Dev
// 2016/02/25: 0.4.0: GUI refactored, functionality split up into more files, mostly done by Z3 Dev
// 2013/03/12: reenable webgui parameters to fit in current design
// 2013/03/11: few changes to fit design of http://openjscad.org
(function(module) {
var OpenJsCad = function() { };
OpenJsCad.version = '0.5.1 (2016/06/27)';
OpenJsCad.log = function(txt) {
var timeInMs = Date.now();
var prevtime = OpenJsCad.log.prevLogTime;
if(!prevtime) prevtime = timeInMs;
var deltatime = timeInMs - prevtime;
OpenJsCad.log.prevLogTime = timeInMs;
var timefmt = (deltatime*0.001).toFixed(3);
txt = "["+timefmt+"] "+txt;
if( (typeof(console) == "object") && (typeof(console.log) == "function") ) {
console.log(txt);
} else if( (typeof(self) == "object") && (typeof(self.postMessage) == "function") ) {
self.postMessage({cmd: 'log', txt: txt});
}
else throw new Error("Cannot log");
};
// See Processor.setStatus()
// Note: leave for compatibility
OpenJsCad.status = function(s) {
OpenJsCad.log(s);
}
OpenJsCad.env = function() {
var env = "OpenJSCAD "+OpenJsCad.version;
if(typeof document !== 'undefined') {
var w = document.defaultView;
env = env+" ["+w.navigator.userAgent+"]";
} else {
if (typeof require == 'function') {
var os = require("os");
env = env+" ["+os.type()+":"+os.release()+","+os.platform()+":"+os.arch()+"]";
}
}
console.log(env);
}
// A viewer is a WebGL canvas that lets the user view a mesh. The user can
// tumble it around by dragging the mouse.
OpenJsCad.Viewer = function(containerelement) {
// see the various methods below on how to change these
this.camera = {
fov: 45, // field of view
angle: {x: -60,y: 0,z: -45}, // view angle about XYZ axis
position: {x: 0,y: 0,z: 0}, // initial position at XYZ
zoom: 100,
clip: {min: 0.5, max: 1000}, // rendering outside this range is clipped
};
this.plate = {
draw: false, // draw or not
size: 200, // plate size (X and Y)
// minor grid settings
m: {
i: 1, // number of units between minor grid lines
r: .8, g: .8, b: .8, a: .5, // color
},
// major grid settings
M: {
i: 10, // number of units between major grid lines
r: .5, g: .5, b: .5, a: .5, // color
},
};
this.axis = {
draw: false, // draw or not
x: {
neg: {r: 1, g: .5, b: .5, a: .5}, // color in negative direction
pos: {r: 1, g: 0, b: 0, a: .8}, // color in positive direction
},
y: {
neg: {r: .5, g: 1, b: .5, a: .5}, // color in negative direction
pos: {r: 0, g: 1, b: 0, a: .8}, // color in positive direction
},
z: {
neg: {r: .5, g: .5, b: 1, a: .5}, // color in negative direction
pos: {r: 0, g: 0, b: 1, a: .8}, // color in positive direction
},
};
this.solid = {
draw: true, // draw or not
lines: false, // draw outlines or not
overlay: false, // use overlay when drawing lines or not
smooth: false, // use smoothing or not
color: [.76,.85,.95,1], // default color
};
// Set up WebGL state
var gl = GL.create();
this.gl = gl;
this.gl.lineWidth(1); // don't let the library choose
// Set up the viewport
this.gl.canvas.width = $(containerelement).width();
this.gl.canvas.height = $(containerelement).height();
this.gl.viewport(0, 0, this.gl.canvas.width, this.gl.canvas.height); // pixels
this.gl.matrixMode(this.gl.PROJECTION);
this.gl.loadIdentity();
this.gl.perspective(this.camera.fov, this.gl.canvas.width / this.gl.canvas.height, this.camera.clip.min, this.camera.clip.max);
this.gl.matrixMode(this.gl.MODELVIEW);
this.gl.blendFunc(this.gl.SRC_ALPHA, this.gl.ONE_MINUS_SRC_ALPHA);
this.gl.clearColor(1, 1, 1, 1);
this.gl.enable(this.gl.DEPTH_TEST);
this.gl.enable(this.gl.CULL_FACE);
// Black shader for wireframe
this.blackShader = new GL.Shader('\
void main() {\
gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;\
}', '\
void main() {\
gl_FragColor = vec4(0.0, 0.0, 0.0, 0.1);\
}'
);
// Shader with diffuse and specular lighting
this.lightingShader = new GL.Shader('\
varying vec3 color;\
varying float alpha;\
varying vec3 normal;\
varying vec3 light;\
void main() {\
const vec3 lightDir = vec3(1.0, 2.0, 3.0) / 3.741657386773941;\
light = lightDir;\
color = gl_Color.rgb;\
alpha = gl_Color.a;\
normal = gl_NormalMatrix * gl_Normal;\
gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;\
}',
'\
varying vec3 color;\
varying float alpha;\
varying vec3 normal;\
varying vec3 light;\
void main() {\
vec3 n = normalize(normal);\
float diffuse = max(0.0, dot(light, n));\
float specular = pow(max(0.0, -reflect(light, n).z), 100.0);\
gl_FragColor = vec4(mix(color * (0.3 + 0.7 * diffuse), vec3(1.0), specular), alpha);\
}'
);
var _this=this;
var shiftControl = $('<div class="shift-scene"><div class="arrow arrow-left" />\
<div class="arrow arrow-right" />\
<div class="arrow arrow-top" />\
<div class="arrow arrow-bottom" /></div>');
$(containerelement).append(this.gl.canvas)
.append(shiftControl)
.hammer({//touch screen control
drag_lock_to_axis: true
}).on("transform", function(e){
if (e.gesture.touches.length >= 2) {
_this.clearShift();
_this.onTransform(e);
e.preventDefault();
}
}).on("touch", function(e) {
if (e.gesture.pointerType != 'touch'){
e.preventDefault();
return;
}
if (e.gesture.touches.length == 1) {
var point = e.gesture.center;
_this.touch.shiftTimer = setTimeout(function(){
shiftControl.addClass('active').css({
left: point.pageX + 'px',
top: point.pageY + 'px'
});
_this.touch.shiftTimer = null;
_this.touch.cur = 'shifting';
}, 500);
} else {
_this.clearShift();
}
}).on("drag", function(e) {
if (e.gesture.pointerType != 'touch') {
e.preventDefault();
return;
}
if (!_this.touch.cur || _this.touch.cur == 'dragging') {
_this.clearShift();
_this.onPanTilt(e);
} else if (_this.touch.cur == 'shifting') {
_this.onShift(e);
}
}).on("touchend", function(e) {
_this.clearShift();
if (_this.touch.cur) {
shiftControl.removeClass('active shift-horizontal shift-vertical');
}
}).on("transformend dragstart dragend", function(e) {
if ((e.type == 'transformend' && _this.touch.cur == 'transforming') ||
(e.type == 'dragend' && _this.touch.cur == 'shifting') ||
(e.type == 'dragend' && _this.touch.cur == 'dragging'))
_this.touch.cur = null;
_this.touch.lastX = 0;
_this.touch.lastY = 0;
_this.touch.scale = 0;
});
this.gl.onmousemove = function(e) {
_this.onMouseMove(e);
};
this.gl.ondraw = function() {
_this.onDraw();
};
this.gl.resizeCanvas = function() {
var canvasWidth = _this.gl.canvas.clientWidth;
var canvasHeight = _this.gl.canvas.clientHeight;
if (_this.gl.canvas.width != canvasWidth ||
_this.gl.canvas.height != canvasHeight) {
_this.gl.canvas.width = canvasWidth;
_this.gl.canvas.height = canvasHeight;
_this.gl.viewport(0, 0, _this.gl.canvas.width, _this.gl.canvas.height);
_this.gl.matrixMode( _this.gl.PROJECTION );
_this.gl.loadIdentity();
_this.gl.perspective(_this.camera.fov, _this.gl.canvas.width / _this.gl.canvas.height, _this.camera.clip.min, _this.camera.clip.max );
_this.gl.matrixMode( _this.gl.MODELVIEW );
_this.onDraw();
}
};
// only window resize is available, so add an event callback for the canvas
window.addEventListener( 'resize', this.gl.resizeCanvas );
this.gl.onmousewheel = function(e) {
var wheelDelta = 0;
if (e.wheelDelta) {
wheelDelta = e.wheelDelta;
} else if (e.detail) {
// for firefox, see http://stackoverflow.com/questions/8886281/event-wheeldelta-returns-undefined
wheelDelta = e.detail * -40;
}
if(wheelDelta) {
var factor = Math.pow(1.003, -wheelDelta);
var coeff = _this.getZoom();
coeff *= factor;
_this.setZoom(coeff);
}
};
// state variables, i.e. used for storing values, etc
// state of viewer
// 0 - initialized, no object
// 1 - cleared, no object
// 2 - showing, object
this.state = 0;
// state of perpective (camera)
this.angleX = this.camera.angle.x;
this.angleY = this.camera.angle.y;
this.angleZ = this.camera.angle.z;
this.viewpointX = this.camera.position.x;
this.viewpointY = this.camera.position.y;
this.viewpointZ = this.camera.position.z;
this.zoom = this.camera.zoom;
this.onZoomChanged = null;
this.touch = {
lastX: 0,
lastY: 0,
scale: 0,
ctrl: 0,
shiftTimer: null,
shiftControl: shiftControl,
cur: null //current state
};
this.focusPoint = new GL.Vector(0,0,0);
this.meshes = [];
this.clear(); // and draw the inital viewer
};
OpenJsCad.Viewer.prototype = {
computeFocusPoint: function() {
var center = new GL.Vector(0,0,0);
for (var i = 0; i < this.meshes.length; i++) {
var mesh = this.meshes[i];
var boundingSphere = mesh.getBoundingSphere();
center.x += boundingSphere.center.x;
center.y += boundingSphere.center.y;
center.z += boundingSphere.center.z;
}
var s = 1./this.meshes.length;
center.x *= s;
center.y *= s;
center.z *= s;
this.focusPoint = center;
},
setCsg: function(csg) {
if(0&&csg.length) { // preparing multiple CSG's (not union-ed), not yet working
for(var i=0; i<csg.length; i++)
this.meshes.concat(this.csgToMeshes(csg[i]));
} else {
this.meshes = this.csgToMeshes(csg);
}
this.computeFocusPoint();
this.state = 2; // showing, object
this.onDraw();
},
clear: function() {
// empty mesh list:
this.meshes = [];
this.state = 1; // cleared, no object
this.onDraw();
},
reset: function() {
// reset camera to initial settings
this.angleX = this.camera.angle.x;
this.angleY = this.camera.angle.y;
this.angleZ = this.camera.angle.z;
this.viewpointX = this.camera.position.x;
this.viewpointY = this.camera.position.y;
this.viewpointZ = this.camera.position.z;
this.zoom = this.camera.zoom;
this.onDraw();
},
supported: function() {
return !!this.gl;
},
setCameraOptions: function(options) {
options = options || {};
// apply all options found
for (var x in this.camera) {
if (x in options) this.camera[x] = options[x];
}
},
setPlateOptions: function(options) {
options = options || {};
// apply all options found
for (var x in this.plate) {
if (x in options) this.plate[x] = options[x];
}
},
setAxisOptions: function(options) {
options = options || {};
// apply all options found
for (var x in this.axis) {
if (x in options) this.axis[x] = options[x];
}
},
setSolidOptions: function(options) {
options = options || {};
// apply all options found
for (var x in this.solid) {
if (x in options) this.solid[x] = options[x];
}
},
setZoom: function(coeff) { //0...1
coeff=Math.max(coeff, 0);
coeff=Math.min(coeff, 1);
this.zoom = this.camera.clip.min + coeff * (this.camera.clip.max - this.camera.clip.min);
if(this.onZoomChanged) {
this.onZoomChanged();
}
this.onDraw();
},
getZoom: function() {
var coeff = (this.zoom-this.camera.clip.min) / (this.camera.clip.max - this.camera.clip.min);
return coeff;
},
updateCameraMatrix: function() {
var xRot = GL.Matrix.rotate(this.angleX, 1,0,0);
var yRot = GL.Matrix.rotate(this.angleY, 0,1,0);
var zRot = GL.Matrix.rotate(this.angleZ, 0,0,1);
var mat = GL.Matrix.multiply(xRot, yRot);
mat = GL.Matrix.multiply(mat, zRot);
this.cameraMatrix = mat;
},
onMouseMove: function(e) {
if (e.dragging) {
//console.log(e.which,e.button);
var b = e.button;
if(e.which) { // RANT: not even the mouse buttons are coherent among the brand (chrome,firefox,etc)
b = e.which;
}
e.preventDefault();
if(e.altKey||b==3) { // ROTATE X,Y (ALT or right mouse button)
this.angleY += e.deltaX;
this.angleX += e.deltaY;
this.updateCameraMatrix();
//this.angleX = Math.max(-180, Math.min(180, this.angleX));
} else if(e.shiftKey||b==2) { // PAN (SHIFT or middle mouse button)
var factor = 5e-3;
this.viewpointX += factor * e.deltaX * this.zoom * this.cameraMatrix.m[0];
this.viewpointY += factor * e.deltaX * this.zoom * this.cameraMatrix.m[1];
this.viewpointZ += factor * e.deltaX * this.zoom * this.cameraMatrix.m[2];
this.viewpointX += -factor * e.deltaY * this.zoom * this.cameraMatrix.m[4];
this.viewpointY += -factor * e.deltaY * this.zoom * this.cameraMatrix.m[5];
this.viewpointZ += -factor * e.deltaY * this.zoom * this.cameraMatrix.m[6];
} else if(e.ctrlKey||e.metaKey) { // ZOOM IN/OU
var factor = Math.pow(1.006, e.deltaX+e.deltaY);
var coeff = this.getZoom();
coeff *= factor;
this.setZoom(coeff);
} else { // ROTATE X,Z left mouse button
this.angleZ += e.deltaX;
this.angleX += e.deltaY;
this.updateCameraMatrix();
}
//console.log({rotx: this.angleX, roty: this.angleY, rotz: this.angleZ, x: this.viewpointX, y: this.viewpointY, z: this.viewpointZ});
this.onDraw();
}
},
clearShift: function() {
if(this.touch.shiftTimer) {
clearTimeout(this.touch.shiftTimer);
this.touch.shiftTimer = null;
}
return this;
},
//pan & tilt with one finger
onPanTilt: function(e) {
this.touch.cur = 'dragging';
var delta = 0;
if (this.touch.lastY && (e.gesture.direction == 'up' || e.gesture.direction == 'down')) {
//tilt
delta = e.gesture.deltaY - this.touch.lastY;
this.angleX += delta;
this.updateCameraMatrix();
} else if (this.touch.lastX && (e.gesture.direction == 'left' || e.gesture.direction == 'right')) {
//pan
delta = e.gesture.deltaX - this.touch.lastX;
this.angleZ += delta;
this.updateCameraMatrix();
}
if (delta)
this.onDraw();
this.touch.lastX = e.gesture.deltaX;
this.touch.lastY = e.gesture.deltaY;
},
//shift after 0.5s touch&hold
onShift: function(e) {
this.touch.cur = 'shifting';
var factor = 5e-3;
var delta = 0;
if (this.touch.lastY && (e.gesture.direction == 'up' || e.gesture.direction == 'down')) {
this.touch.shiftControl
.removeClass('shift-horizontal')
.addClass('shift-vertical')
.css('top', e.gesture.center.pageY + 'px');
delta = e.gesture.deltaY - this.touch.lastY;
this.viewpointX += -factor * delta * this.zoom * this.cameraMatrix.m[4];
this.viewpointY += -factor * delta * this.zoom * this.cameraMatrix.m[5];
this.viewpointZ += -factor * delta * this.zoom * this.cameraMatrix.m[6];
}
if (this.touch.lastX && (e.gesture.direction == 'left' || e.gesture.direction == 'right')) {
this.touch.shiftControl
.removeClass('shift-vertical')
.addClass('shift-horizontal')
.css('left', e.gesture.center.pageX + 'px');
delta = e.gesture.deltaX - this.touch.lastX;
this.viewpointX += factor * delta * this.zoom * this.cameraMatrix.m[0];
this.viewpointY += factor * delta * this.zoom * this.cameraMatrix.m[1];
this.viewpointZ += factor * delta * this.zoom * this.cameraMatrix.m[2];
}
if (delta)
this.onDraw();
this.touch.lastX = e.gesture.deltaX;
this.touch.lastY = e.gesture.deltaY;
},
//zooming
onTransform: function(e) {
this.touch.cur = 'transforming';
if (this.touch.scale) {
var factor = 1 / (1 + e.gesture.scale - this.touch.scale);
var coeff = this.getZoom();
coeff *= factor;
this.setZoom( coeff);
}
this.touch.scale = e.gesture.scale;
return this;
},
onDraw: function(e) {
var gl = this.gl;
gl.makeCurrent();
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
gl.loadIdentity();
// set the perspective based on the camera postion
gl.translate(0,0,-this.zoom);
gl.rotate(this.angleX, 1, 0, 0);
gl.rotate(this.angleY, 0, 1, 0);
gl.rotate(this.angleZ, 0, 0, 1);
gl.translate(this.viewpointX, this.viewpointY, this.viewpointZ);
gl.translate(-this.focusPoint.x,-this.focusPoint.y,-this.focusPoint.z);
// draw the solid (meshes)
if(this.solid.draw) {
gl.enable(gl.BLEND);
if (!this.solid.overlay) gl.enable(gl.POLYGON_OFFSET_FILL);
for (var i = 0; i < this.meshes.length; i++) {
var mesh = this.meshes[i];
this.lightingShader.draw(mesh, gl.TRIANGLES);
}
if (!this.solid.overlay) gl.disable(gl.POLYGON_OFFSET_FILL);
gl.disable(gl.BLEND);
if(this.solid.lines) {
if (this.solid.overlay) gl.disable(gl.DEPTH_TEST);
gl.enable(gl.BLEND);
for (var i = 0; i < this.meshes.length; i++) {
var mesh = this.meshes[i];
this.blackShader.draw(mesh, gl.LINES);
}
gl.disable(gl.BLEND);
if (this.solid.overlay) gl.enable(gl.DEPTH_TEST);
}
}
// draw the plate and the axis
gl.enable(gl.BLEND);
gl.blendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA);
gl.begin(gl.LINES);
if(this.plate.draw) {
var m = this.plate.m; // short cut
var M = this.plate.M; // short cut
var size = this.plate.size/2;
// -- minor grid
gl.color(m.r,m.g,m.b,m.a);
var mg = m.i;
var MG = M.i;
for(var x=-size; x<=size; x+=mg) {
if(x%MG) { // draw only minor grid line
gl.vertex(-size, x, 0);
gl.vertex(size, x, 0);
gl.vertex(x, -size, 0);
gl.vertex(x, size, 0);
}
}
// -- major grid
gl.color(M.r,M.g,M.b,M.a);
for(var x=-size; x<=size; x+=MG) {
gl.vertex(-size, x, 0);
gl.vertex(size, x, 0);
gl.vertex(x, -size, 0);
gl.vertex(x, size, 0);
}
}
if (this.axis.draw) {
var size = this.plate.size/2;
// X axis
var c = this.axis.x.neg;
gl.color(c.r, c.g, c.b, c.a); //negative direction is lighter
gl.vertex(-size, 0, 0);
gl.vertex(0, 0, 0);
c = this.axis.x.pos;
gl.color(c.r, c.g, c.b, c.a); //positive direction is lighter
gl.vertex(0, 0, 0);
gl.vertex(size, 0, 0);
// Y axis
c = this.axis.y.neg;
gl.color(c.r, c.g, c.b, c.a); //negative direction is lighter
gl.vertex(0, -size, 0);
gl.vertex(0, 0, 0);
c = this.axis.y.pos;
gl.color(c.r, c.g, c.b, c.a); //positive direction is lighter
gl.vertex(0, 0, 0);
gl.vertex(0, size, 0);
// Z axis
c = this.axis.z.neg;
gl.color(c.r, c.g, c.b, c.a); //negative direction is lighter
gl.vertex(0, 0, -size);
gl.vertex(0, 0, 0);
c = this.axis.z.pos;
gl.color(c.r, c.g, c.b, c.a); //positive direction is lighter
gl.vertex(0, 0, 0);
gl.vertex(0, 0, size);
}
if(0) { // WHAT IS THIS FOR?
gl.triangle();
gl.color(0.6, 0.2, 0.6, 0.2); //positive direction
gl.vertex(-plate,-plate,0);
gl.vertex(plate,-plate,0);
gl.vertex(plate,plate,0);
gl.end();
gl.triangle();
gl.color(0.6, 0.2, 0.6, 0.2); //positive direction
gl.vertex(plate,plate,0);
gl.vertex(-plate,plate,0);
gl.vertex(-plate,-plate,0);
gl.end();
}
gl.end();
gl.disable(gl.BLEND);
},
// Convert from CSG solid to an array of GL.Mesh objects
// limiting the number of vertices per mesh to less than 2^16
csgToMeshes: function(initial_csg) {
var csg = initial_csg.canonicalized();
var mesh = new GL.Mesh({ normals: true, colors: true });
var meshes = [ mesh ];
var vertexTag2Index = {};
var vertices = [];
var colors = [];
var triangles = [];
// set to true if we want to use interpolated vertex normals
// this creates nice round spheres but does not represent the shape of
// the actual model
var smoothlighting = this.solid.smooth;
var polygons = csg.toPolygons();
var numpolygons = polygons.length;
for(var j = 0; j < numpolygons; j++) {
var polygon = polygons[j];
var color = this.solid.color; // default color
if(polygon.shared && polygon.shared.color) {
color = polygon.shared.color;
} else if(polygon.color) {
color = polygon.color;
}
if (color.length < 4)
color.push(1.); //opaque
var indices = polygon.vertices.map(function(vertex) {
var vertextag = vertex.getTag();
var vertexindex = vertexTag2Index[vertextag];
var prevcolor = colors[vertexindex];
if(smoothlighting && (vertextag in vertexTag2Index) &&
(prevcolor[0] == color[0]) &&
(prevcolor[1] == color[1]) &&
(prevcolor[2] == color[2])
) {
vertexindex = vertexTag2Index[vertextag];
} else {
vertexindex = vertices.length;
vertexTag2Index[vertextag] = vertexindex;
vertices.push([vertex.pos.x, vertex.pos.y, vertex.pos.z]);
colors.push(color);
}
return vertexindex;
});
for (var i = 2; i < indices.length; i++) {
triangles.push([indices[0], indices[i - 1], indices[i]]);
}
// if too many vertices, start a new mesh;
if (vertices.length > 65000) {
// finalize the old mesh
mesh.triangles = triangles;
mesh.vertices = vertices;
mesh.colors = colors;
mesh.computeWireframe();
mesh.computeNormals();
if ( mesh.vertices.length ) {
meshes.push(mesh);
}
// start a new mesh
mesh = new GL.Mesh({ normals: true, colors: true });
triangles = [];
colors = [];
vertices = [];
}
}
// finalize last mesh
mesh.triangles = triangles;
mesh.vertices = vertices;
mesh.colors = colors;
mesh.computeWireframe();
mesh.computeNormals();
if ( mesh.vertices.length ) {
meshes.push(mesh);
}
return meshes;
},
};
// this is a bit of a hack; doesn't properly supports urls that start with '/'
// but does handle relative urls containing ../
OpenJsCad.makeAbsoluteUrl = function(url, baseurl) {
if(!url.match(/^[a-z]+\:/i)) {
var basecomps = baseurl.split("/");
if(basecomps.length > 0) {
basecomps.splice(basecomps.length - 1, 1);
}
var urlcomps = url.split("/");
var comps = basecomps.concat(urlcomps);
var comps2 = [];
comps.map(function(c) {
if(c == "..") {
if(comps2.length > 0) {
comps2.splice(comps2.length - 1, 1);
}
} else {
comps2.push(c);
}
});
url = "";
for(var i = 0; i < comps2.length; i++) {
if(i > 0) url += "/";
url += comps2[i];
}
}
return url;
};
OpenJsCad.isChrome = function() {
return (window.navigator.userAgent.search("Chrome") >= 0);
};
OpenJsCad.isSafari = function() {
return /Version\/[\d\.]+.*Safari/.test(window.navigator.userAgent); // FIXME WWW says don't use this
}
OpenJsCad.getWindowURL = function() {
if(window.URL) return window.URL;
else if(window.webkitURL) return window.webkitURL;
else throw new Error("Your browser doesn't support window.URL");
};
OpenJsCad.textToBlobUrl = function(txt) {
var windowURL=OpenJsCad.getWindowURL();
var blob = new Blob([txt], { type : 'application/javascript' });
var blobURL = windowURL.createObjectURL(blob);
if(!blobURL) throw new Error("createObjectURL() failed");
return blobURL;
};
OpenJsCad.revokeBlobUrl = function(url) {
if(window.URL) window.URL.revokeObjectURL(url);
else if(window.webkitURL) window.webkitURL.revokeObjectURL(url);
else throw new Error("Your browser doesn't support window.URL");
};
OpenJsCad.FileSystemApiErrorHandler = function(fileError, operation) {
var errormap = {
1: 'NOT_FOUND_ERR',
2: 'SECURITY_ERR',
3: 'ABORT_ERR',
4: 'NOT_READABLE_ERR',
5: 'ENCODING_ERR',
6: 'NO_MODIFICATION_ALLOWED_ERR',
7: 'INVALID_STATE_ERR',
8: 'SYNTAX_ERR',
9: 'INVALID_MODIFICATION_ERR',
10: 'QUOTA_EXCEEDED_ERR',
11: 'TYPE_MISMATCH_ERR',
12: 'PATH_EXISTS_ERR',
};
var errname;
if(fileError.code in errormap)
{
errname = errormap[fileError.code];
}
else
{
errname = "Error #"+fileError.code;
}
var errtxt = "FileSystem API error: "+operation+" returned error "+errname;
throw new Error(errtxt);
};
// Call this routine to install a handler for uncaught exceptions
OpenJsCad.AlertUserOfUncaughtExceptions = function() {
window.onerror = function(message, url, line) {
var msg = "uncaught exception";
switch (arguments.length) {
case 1: // message
msg = arguments[0];
break;
case 2: // message and url
msg = arguments[0]+'\n('+arguments[1]+')';
break;
case 3: // message and url and line#
msg = arguments[0]+'\nLine: '+arguments[2]+'\n('+arguments[1]+')';
break;
case 4: // message and url and line# and column#
case 5: // message and url and line# and column# and Error
msg = arguments[0]+'\nLine: '+arguments[2]+',col: '+arguments[3]+'\n('+arguments[1]+')';
break;
default:
break;
}
if(typeof document == 'object') {
var e = document.getElementById("errordiv");
if (e !== null) {
e.firstChild.textContent = msg;
e.style.display = "block";
}
} else {
console.log(msg);
}
return false;
};
};
// parse the jscad script to get the parameter definitions
OpenJsCad.getParamDefinitions = function(script) {
var scriptisvalid = true;
script += "\nfunction include() {}"; // at least make it not throw an error so early
try
{
// first try to execute the script itself
// this will catch any syntax errors
// BUT we can't introduce any new function!!!
(new Function(script))();
}
catch(e) {
scriptisvalid = false;
}
var params = [];
if(scriptisvalid)
{
var script1 = "if(typeof(getParameterDefinitions) == 'function') {return getParameterDefinitions();} else {return [];} ";
script1 += script;
var f = new Function(script1);
params = f();
if( (typeof(params) != "object") || (typeof(params.length) != "number") )
{
throw new Error("The getParameterDefinitions() function should return an array with the parameter definitions");
}
}
return params;
};
OpenJsCad.Processor = function(containerdiv, options) {
if (options === undefined) options = {};
// the default options
this.opts = {
debug: false,
libraries: ['hull3d.js', 'csg.js','formats.js','openjscad.js','openscad.js'],
openJsCadPath: '',
useAsync: true,
useSync: true,
};
// apply all options found
for (var x in this.opts) {
if (x in options) this.opts[x] = options[x];
}
this.containerdiv = containerdiv;
this.viewer = null;
this.worker = null;
this.zoomControl = null;
// callbacks
this.onchange = null; // function(Processor) for callback
this.ondownload = null; // function(Processor) for callback
this.currentObject = null;
this.hasOutputFile = false;
this.hasError = false;
this.paramDefinitions = [];
this.paramControls = [];
this.script = null;
this.baseurl = document.location.href;
this.baseurl = this.baseurl.replace(/#.*$/,''); // remove remote URL
this.baseurl = this.baseurl.replace(/\?.*$/,''); // remove parameters
if (this.baseurl.lastIndexOf('/') != (this.baseurl.length-1)) {
this.baseurl = this.baseurl.substring(0,this.baseurl.lastIndexOf('/')+1);
}
// state of the processor
// 0 - initialized - no viewer, no parameters, etc
// 1 - processing - processing JSCAD script
// 2 - complete - completed processing
// 3 - incomplete - incompleted due to errors in processing
this.state = 0; // initialized
this.createElements();
};
OpenJsCad.Processor.convertToSolid = function(objs) {
if (objs.length === undefined) {
if ((objs instanceof CAG) || (objs instanceof CSG)) {
var obj = objs;
objs = [obj];
} else {
throw new Error("Cannot convert object ("+typeof(objs)+") to solid");
}
}
var solid = null;
for(var i=0; i<objs.length; i++) {
var obj = objs[i];
if (obj instanceof CAG) {
obj = obj.extrude({offset: [0,0,0.1]}); // convert CAG to a thin solid CSG
}
if (solid !== null) {
solid = solid.unionForNonIntersecting(obj);
} else {
solid = obj;
}
}
return solid;
};
OpenJsCad.Processor.prototype = {
createElements: function() {
var that = this; // for event handlers
while(this.containerdiv.children.length > 0)
{
this.containerdiv.removeChild(0);
}
var viewerdiv = document.createElement("div");
viewerdiv.className = "viewer";
viewerdiv.style.width = '100%';
viewerdiv.style.height = '100%';
this.containerdiv.appendChild(viewerdiv);
try {
this.viewer = new OpenJsCad.Viewer(viewerdiv);
} catch(e) {
viewerdiv.innerHTML = "<b><br><br>Error: " + e.toString() + "</b><br><br>A browser with support for WebGL is required";
}
//Zoom control
if(0) {
var div = document.createElement("div");
this.zoomControl = div.cloneNode(false);
this.zoomControl.style.width = this.viewerwidth + 'px';
this.zoomControl.style.height = '20px';
this.zoomControl.style.backgroundColor = 'transparent';
this.zoomControl.style.overflowX = 'scroll';
div.style.width = this.viewerwidth * 11 + 'px';
div.style.height = '1px';
this.zoomControl.appendChild(div);
this.zoomChangedBySlider = false;
this.zoomControl.onscroll = function(event) {
var zoom = that.zoomControl;
var newzoom=zoom.scrollLeft / (10 * zoom.offsetWidth);
that.zoomChangedBySlider=true; // prevent recursion via onZoomChanged
that.viewer.setZoom(newzoom);
that.zoomChangedBySlider=false;
};
this.viewer.onZoomChanged = function() {
if(!that.zoomChangedBySlider)
{
var newzoom = that.viewer.getZoom();
that.zoomControl.scrollLeft = newzoom * (10 * that.zoomControl.offsetWidth);
}
};
this.containerdiv.appendChild(this.zoomControl);
this.zoomControl.scrollLeft = this.viewer.zoom / this.viewer.camera.clip.max *
(this.zoomControl.scrollWidth - this.zoomControl.offsetWidth);
//end of zoom control
}
this.errordiv = this.containerdiv.parentElement.querySelector("div#errordiv");
if (!this.errordiv) {
this.errordiv = document.createElement("div");
this.errordiv.id = 'errordiv';