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graphics3d.js
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graphics3d.js
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const flatten = (ary) => ary.reduce((a, b) => a.concat(Array.isArray(b) ? flatten(b) : b), [])
function computeGroupCenter(group) {
var center = new THREE.Vector3();
var children = group.children;
var count = children.length;
for (var i = 0; i < count; i++) {
center.add(children[i].position);
}
center.divideScalar(count);
return center;
}
function RGBtoColor(i,k,j) {
var r = Math.round(255*i);
var g = Math.round(255*k);
var b = Math.round(255*j);
return(new THREE.Color("rgb("+r+","+g+","+b+")"));
}
var interpretate = function (d, parent=undefined, params=undefined, mesh=undefined) {
if (typeof d !== 'object') return d;
var func = {
name: d[0],
args: d.slice(1,d.length),
parent: parent
};
switch(func.name) {
case 'Graphics3D':
console.log("GRAPHICS3D");
var data = {"axes": {},
"extent": {"zmax": 1.0, "ymax": 1.0, "zmin": -1.0, "xmax": 1.0, "xmin": -1.0, "ymin": -1.0},
"lighting": [ {"type": "Ambient", "color": [0.3, 0.2, 0.4]},
{"type": "Directional", "color": [0.8, 0., 0.],
"position": [2, 0, 2]},
{"type": "Directional", "color": [0., 0.8, 0.],
"position": [2, 2, 2]},
{"type": "Directional", "color": [0., 0., 0.8],
"position": [0, 2, 2]}],
"viewpoint":[1.3, -2.4, 2]};
var container = document.getElementById("graphics3d");
var camera, scene, renderer, boundbox, hasaxes, viewpoint,
isMouseDown = false, onMouseDownPosition,
tmpx, tmpy, tmpz,
theta, onMouseDownTheta, phi, onMouseDownPhi;
// Scene
scene = new THREE.Scene();
var group = new THREE.Group();
params = {
matrix: new THREE.Matrix4(),
color: RGBtoColor(1,1,1),
opacity: 1,
thickness: 1,
edgecolor: RGBtoColor(0,0,0)
};
params.matrix.set( 1,0,0,0,
0,1,0,0,
0,0,1,0,
0,0,0,1 );
interpretate(func.args[0], func, params, group);
var bbox = new THREE.Box3().setFromObject(group);
var center = new THREE.Vector3().addVectors(bbox.max,bbox.min).divideScalar(2);
console.log("BBOX CENTER");
console.log(center);
console.log(bbox);
//var translate = new THREE.Matrix4().makeTranslation(-center.x,-center.y,-center.z,1);
//group.applyMatrix(translate);
scene.position = center;
// Center of the scene
//var center = new THREE.Vector3(
// 0.5 * (data.extent.xmin + data.extent.xmax),
// 0.5 * (data.extent.ymin + data.extent.ymax),
// 0.5 * (data.extent.zmin + data.extent.zmax));
// Where the camera is looking
var focus = new THREE.Vector3(center.x, center.y, center.z);
// Viewpoint
viewpoint = new THREE.Vector3(data.viewpoint[0], data.viewpoint[1], data.viewpoint[2]).sub(focus);
var ln = new THREE.Vector3().addVectors(bbox.max,bbox.min.clone().negate()).length();
console.log("Radius is "+ln);
viewpoint.x *= ln;
viewpoint.y *= ln;
viewpoint.z *= ln;
var radius = viewpoint.length()
onMouseDownTheta = theta = Math.acos(viewpoint.z / radius);
onMouseDownPhi = phi = (Math.atan2(viewpoint.y, viewpoint.x) + 2*Math.PI) % (2 * Math.PI);
camera = new THREE.PerspectiveCamera(
35, // Field of view
1, // Aspect ratio
0.1*radius, // Near plane
1000*radius // Far plane
);
function update_camera_position() {
camera.position.x = radius * Math.sin(theta) * Math.cos(phi);
camera.position.y = radius * Math.sin(theta) * Math.sin(phi);
camera.position.z = radius * Math.cos(theta);
camera.position.add(focus);
camera.lookAt(focus);
}
update_camera_position();
camera.up = new THREE.Vector3(0,0,1);
scene.add(camera);
// Lighting
function addLight(l) {
var color = new THREE.Color().setRGB(l.color[0], l.color[1], l.color[2]);
var light;
if (l.type === "Ambient") {
light = new THREE.AmbientLight(color.getHex());
} else if (l.type === "Directional") {
light = new THREE.DirectionalLight(color.getHex(), 1);
} else if (l.type === "Spot") {
light = new THREE.SpotLight(color.getHex());
light.position.set(l.position[0], l.position[1], l.position[2]);
light.target.position.set(l.target[0], l.target[1], l.target[2]);
light.target.updateMatrixWorld(); // This fixes bug in THREE.js
light.angle = l.angle;
} else if (l.type === "Point") {
light = new THREE.PointLight(color.getHex());
light.position.set(l.position[0], l.position[1], l.position[2]);
// Add visible light sphere
var lightsphere = new THREE.Mesh(
new THREE.SphereGeometry(0.007*radius, 16, 8),
new THREE.MeshBasicMaterial({color: color.getHex()})
);
lightsphere.position = light.position;
scene.add(lightsphere);
} else {
alert("Error: Internal Light Error", l.type);
return;
}
return light;
}
function getInitLightPos(l) {
// Initial Light position in spherical polar coordinates
if (l.position instanceof Array) {
var tmppos = new THREE.Vector3(l.position[0], l.position[1], l.position[2]);
var result = {"radius": radius * tmppos.length()};
if (tmppos.length() <= 0.0001) {
result.theta = 0;
result.phi = 0;
} else {
result.phi = (Math.atan2(tmppos.y, tmppos.x) + 2 * Math.PI) % (2 * Math.PI);
result.theta = Math.asin(tmppos.z / result.radius);
}
return result;
}
return;
}
function positionLights() {
for (var i = 0; i < lights.length; i++) {
if (lights[i] instanceof THREE.DirectionalLight) {
lights[i].position.x = initLightPos[i].radius * Math.sin(theta + initLightPos[i].theta) * Math.cos(phi + initLightPos[i].phi);
lights[i].position.y = initLightPos[i].radius * Math.sin(theta + initLightPos[i].theta) * Math.sin(phi + initLightPos[i].phi);
lights[i].position.z = initLightPos[i].radius * Math.cos(theta + initLightPos[i].theta);
lights[i].position.add(focus);
}
}
}
var lights = new Array(data.lighting.length);
var initLightPos = new Array(data.lighting.length);
for (var i = 0; i < data.lighting.length; i++) {
initLightPos[i] = getInitLightPos(data.lighting[i]);
lights[i] = addLight(data.lighting[i]);
scene.add(lights[i]);
}
// BoundingBox
boundbox = new THREE.Mesh(
new THREE.CubeGeometry(
bbox.max.x - bbox.min.x,
bbox.max.y - bbox.min.y,
bbox.max.z - bbox.min.z),
new THREE.MeshBasicMaterial({color: 0x666666, wireframe: true})
);
boundbox.position = center;
var geo = new THREE.EdgesGeometry( new THREE.CubeGeometry(
bbox.max.x - bbox.min.x,
bbox.max.y - bbox.min.y,
bbox.max.z - bbox.min.z) ); // or WireframeGeometry( geometry )
var mat = new THREE.LineBasicMaterial( { color: 0x666666, linewidth: 2 } );
var wireframe = new THREE.LineSegments( geo.translate(center.x,center.y,center.z), mat );
//scene.add(wireframe);
// Draw the Axes
if (data.axes.hasaxes instanceof Array) {
hasaxes = new Array(data.axes.hasaxes[0], data.axes.hasaxes[1], data.axes.hasaxes[2]);
} else if (data.axes.hasaxes instanceof Boolean) {
if (data.axes) {
hasaxes = new Array(true, true, true);
} else {
hasaxes = new Array(false, false, false);
}
} else {
hasaxes = new Array(false, false, false);
}
var axesmat = new THREE.LineBasicMaterial({ color: 0x000000, linewidth : 1.5 });
var axesgeom = [];
var axesindicies = [
[[0,5], [1,4], [2,7], [3,6]],
[[0,2], [1,3], [4,6], [5,7]],
[[0,1], [2,3], [4,5], [6,7]]
];
var axesmesh = new Array(3);
for (var i=0; i<3; i++) {
if (hasaxes[i]) {
axesgeom[i] = new THREE.Geometry();
axesgeom[i].vertices.push(new THREE.Vector3().addVectors(
boundbox.geometry.vertices[axesindicies[i][0][0]], boundbox.position)
);
axesgeom[i].vertices.push(new THREE.Vector3().addVectors(
boundbox.geometry.vertices[axesindicies[i][0][1]], boundbox.position)
);
axesmesh[i] = new THREE.Line(axesgeom[i], axesmat);
axesmesh[i].geometry.dynamic = true;
scene.add(axesmesh[i]);
}
}
function boxEdgeLength(i, j) {
edge = new THREE.Vector3().sub(
toCanvasCoords(boundbox.geometry.vertices[axesindicies[i][j][0]]),
toCanvasCoords(boundbox.geometry.vertices[axesindicies[i][j][1]])
);
edge.z = 0;
return edge.length();
}
function positionAxes() {
// Automatic axes placement
nearj = null;
nearl = 10*radius;
farj = null;
farl = 0.0;
tmpv = new THREE.Vector3();
for (var j = 0; j < 8; j++) {
tmpv.addVectors(boundbox.geometry.vertices[j], boundbox.position);
tmpv.sub(camera.position);
tmpl = tmpv.length();
if (tmpl < nearl) {
nearl = tmpl;
nearj = j;
} else if (tmpl > farl) {
farl = tmpl;
farj = j;
}
}
for (var i = 0; i < 3; i++) {
if (hasaxes[i]) {
maxj = null;
maxl = 0.0;
for (var j = 0; j < 4; j++) {
if (axesindicies[i][j][0] !== nearj && axesindicies[i][j][1] !== nearj && axesindicies[i][j][0] !== farj && axesindicies[i][j][1] !== farj) {
tmpl = boxEdgeLength(i, j);
if (tmpl > maxl) {
maxl = tmpl;
maxj = j;
}
}
}
axesmesh[i].geometry.vertices[0].addVectors(boundbox.geometry.vertices[axesindicies[i][maxj][0]], boundbox.position);
axesmesh[i].geometry.vertices[1].addVectors(boundbox.geometry.vertices[axesindicies[i][maxj][1]], boundbox.position);
axesmesh[i].geometry.verticesNeedUpdate = true;
}
}
update_axes();
}
// Axes Ticks
var tickmat = new THREE.LineBasicMaterial({ color: 0x000000, linewidth : 1.2 });
var ticks = new Array(3);
var ticks_small = new Array(3);
var ticklength = 0.005*radius;
for (var i = 0; i < 3; i++) {
if (hasaxes[i]) {
ticks[i] = [];
for (var j = 0; j < data.axes.ticks[i][0].length; j++) {
tickgeom = new THREE.Geometry();
tickgeom.vertices.push(new THREE.Vector3());
tickgeom.vertices.push(new THREE.Vector3());
ticks[i].push(new THREE.Line(tickgeom, tickmat));
scene.add(ticks[i][j]);
}
ticks_small[i] = [];
for (var j = 0; j < data.axes.ticks[i][1].length; j++) {
tickgeom = new THREE.Geometry();
tickgeom.vertices.push(new THREE.Vector3());
tickgeom.vertices.push(new THREE.Vector3());
ticks_small[i].push(new THREE.Line(tickgeom, tickmat));
scene.add(ticks_small[i][j]);
}
}
}
function getTickDir(i) {
var tickdir = new THREE.Vector3();
if (i === 0) {
if (0.25*Math.PI < theta && theta < 0.75*Math.PI) {
if (axesgeom[0].vertices[0].z > boundbox.position.z) {
tickdir.set(0, 0, -ticklength);
} else {
tickdir.set(0, 0, ticklength);
}
} else {
if (axesgeom[0].vertices[0].y > boundbox.position.y) {
tickdir.set(0,-ticklength, 0);
} else {
tickdir.set(0, ticklength, 0);
}
}
} else if (i === 1) {
if (0.25*Math.PI < theta && theta < 0.75*Math.PI) {
if (axesgeom[1].vertices[0].z > boundbox.position.z) {
tickdir.set(0, 0, -ticklength);
} else {
tickdir.set(0, 0, ticklength);
}
} else {
if (axesgeom[1].vertices[0].x > boundbox.position.x) {
tickdir.set(-ticklength, 0, 0);
} else {
tickdir.set(ticklength, 0, 0);
}
}
} else if (i === 2) {
if ((0.25*Math.PI < phi && phi < 0.75*Math.PI) || (1.25*Math.PI < phi && phi < 1.75*Math.PI)) {
if (axesgeom[2].vertices[0].x > boundbox.position.x) {
tickdir.set(-ticklength, 0, 0);
} else {
tickdir.set(ticklength, 0, 0);
}
} else {
if (axesgeom[2].vertices[0].y > boundbox.position.y) {
tickdir.set(0, -ticklength, 0, 0);
} else {
tickdir.set(0, ticklength, 0, 0);
}
}
}
return tickdir;
}
function update_axes() {
for (var i = 0; i < 3; i++) {
if (hasaxes[i]) {
tickdir = getTickDir(i);
small_tickdir = tickdir.clone();
small_tickdir.multiplyScalar(0.5);
for (var j = 0; j < data.axes.ticks[i][0].length; j++) {
tmpval = data.axes.ticks[i][0][j];
ticks[i][j].geometry.vertices[0].copy(axesgeom[i].vertices[0]);
ticks[i][j].geometry.vertices[1].addVectors(axesgeom[i].vertices[0], tickdir);
if (i === 0) {
ticks[i][j].geometry.vertices[0].x = tmpval;
ticks[i][j].geometry.vertices[1].x = tmpval;
} else if (i === 1) {
ticks[i][j].geometry.vertices[0].y = tmpval;
ticks[i][j].geometry.vertices[1].y = tmpval;
} else if (i === 2) {
ticks[i][j].geometry.vertices[0].z = tmpval;
ticks[i][j].geometry.vertices[1].z = tmpval;
}
ticks[i][j].geometry.verticesNeedUpdate = true;
}
for (var j = 0; j < data.axes.ticks[i][1].length; j++) {
tmpval = data.axes.ticks[i][1][j];
ticks_small[i][j].geometry.vertices[0].copy(axesgeom[i].vertices[0]);
ticks_small[i][j].geometry.vertices[1].addVectors(axesgeom[i].vertices[0], small_tickdir);
if (i === 0) {
ticks_small[i][j].geometry.vertices[0].x = tmpval;
ticks_small[i][j].geometry.vertices[1].x = tmpval;
} else if (i === 1) {
ticks_small[i][j].geometry.vertices[0].y = tmpval;
ticks_small[i][j].geometry.vertices[1].y = tmpval;
} else if (i === 2) {
ticks_small[i][j].geometry.vertices[0].z = tmpval;
ticks_small[i][j].geometry.vertices[1].z = tmpval;
}
ticks_small[i][j].geometry.verticesNeedUpdate = true;
}
}
}
}
update_axes();
// Axes numbering using divs
var ticknums = new Array(3);
for (var i = 0; i < 3; i++) {
if (hasaxes[i]) {
ticknums[i] = new Array(data.axes.ticks[i][0].length);
for (var j = 0; j < ticknums[i].length; j++) {
ticknums[i][j] = document.createElement('div');
ticknums[i][j].innerHTML = data.axes.ticks[i][2][j];
// Handle Minus signs
if (data.axes.ticks[i][0][j] >= 0) {
ticknums[i][j].style.paddingLeft = "0.5em";
} else {
ticknums[i][j].style.paddingLeft = 0;
}
ticknums[i][j].style.position = "absolute";
ticknums[i][j].style.fontSize = "0.8em";
container.appendChild(ticknums[i][j]);
}
}
}
function toCanvasCoords(position) {
var pos = position.clone();
var projScreenMat = new THREE.Matrix4();
projScreenMat.multiply(camera.projectionMatrix, camera.matrixWorldInverse);
//.multiplyVector3( pos );
pos = pos.applyMatrix4(projScreenMat);
var result = new THREE.Vector3((pos.x + 1 ) * 200, (1-pos.y) * 200, (pos.z + 1 ) * 200);
return result;
}
function positionticknums() {
for (var i = 0; i < 3; i++) {
if (hasaxes[i]) {
for (var j = 0; j < ticknums[i].length; j++) {
var tickpos3D = ticks[i][j].geometry.vertices[0].clone();
var tickDir = new THREE.Vector3().sub(ticks[i][j].geometry.vertices[0], ticks[i][j].geometry.vertices[1]);
//tickDir.multiplyScalar(3);
tickDir.setLength(3*ticklength);
tickDir.x *= 2.0;
tickDir.y *= 2.0;
tickpos3D.add(tickDir);
var tickpos = toCanvasCoords(tickpos3D);
tickpos.x -= 10;
tickpos.y += 8;
ticknums[i][j].style.left = tickpos.x.toString() + "px";
ticknums[i][j].style.top = tickpos.y.toString() + "px";
if (tickpos.x < 5 || tickpos.x > 395 || tickpos.y < 5 || tickpos.y > 395) {
ticknums[i][j].style.display = "none";
}
else {
ticknums[i][j].style.display = "";
}
}
}
}
}
scene.add(group);
//loader = new THREE.JSONLoader();
//loader.load( JSON.parse(str));
//loader.onLoadComplete=function(mesh){scene.add( mesh )}
// Plot the primatives
/*for (var indx = 0; indx < data.elements.length; indx++) {
var type = data.elements[indx].type;
switch(type) {
case "point":
scene.add(drawPoint(data.elements[indx]));
break;
case "line":
scene.add(drawLine(data.elements[indx]));
break;
case "polygon":
scene.add(drawPolygon(data.elements[indx]));
break;
case "sphere":
scene.add(drawSphere(data.elements[indx]));
break;
case "cube":
scene.add(drawCube(data.elements[indx]));
break;
default:
alert("Error: Unknown type passed to drawGraphics3D");
}
}*/
// Renderer (set preserveDrawingBuffer to deal with issue
// of weird canvas content after switching windows)
if (Detector.webgl) {
renderer = new THREE.WebGLRenderer({antialias: true, preserveDrawingBuffer: true});
} else {
renderer = new THREE.CanvasRenderer({antialias: true, preserveDrawingBuffer: true});
message = document.createElement('div');
message.innerHTML = "Canvas Renderer support is experimental, please enable WebGL where possible.";
message.style.position = "absolute";
message.style.fontSize = "0.8em";
message.style.color = "#FF6060";
container.appendChild(message);
}
renderer.setSize(400, 400);
renderer.setClearColor( 0xffffff );
container.appendChild(renderer.domElement);
function render() {
positionLights();
renderer.render( scene, camera );
}
function toScreenCoords(position) {
return position.clone().applyMatrix3(camera.matrixWorldInverse);
}
function ScaleInView() {
var tmp_fov = 0.0;
//var proj2d = new THREE.Vector3();
/*for (var i=0; i<boundbox.geometry.vertices.length; i++) {
proj2d = proj2d.addVectors(boundbox.geometry.vertices[i], boundbox.position);
proj2d = toScreenCoords(proj2d);
angle = 114.59 * Math.max(
Math.abs(Math.atan(proj2d.x/proj2d.z) / camera.aspect),
Math.abs(Math.atan(proj2d.y/proj2d.z))
);
tmp_fov = Math.max(tmp_fov, angle);
}*/
//console.log(bbox);
var height = bbox.min.clone().sub(bbox.max).length();
var dist = center.clone().sub(camera.position).length();
tmp_fov = 2 * Math.atan( height / ( 2 * dist ) ) * ( 180 / Math.PI );
camera.fov = tmp_fov + 5;
camera.updateProjectionMatrix();
}
// Mouse Interactions
function onDocumentMouseDown( event ) {
event.preventDefault();
isMouseDown = true;
isShiftDown = false;
isCtrlDown = false;
onMouseDownTheta = theta;
onMouseDownPhi = phi;
onMouseDownPosition.x = event.clientX;
onMouseDownPosition.y = event.clientY;
onMouseDownFocus = new THREE.Vector3().copy(focus);
}
function onDocumentMouseMove(event) {
event.preventDefault();
if (isMouseDown) {
positionticknums();
if (event.shiftKey) {
// console.log("Pan");
if (! isShiftDown) {
isShiftDown = true;
onMouseDownPosition.x = event.clientX;
onMouseDownPosition.y = event.clientY;
autoRescale = false;
container.style.cursor = "move";
}
var camz = new THREE.Vector3().sub(focus, camera.position);
camz.normalize();
var camx = new THREE.Vector3(
- radius * Math.cos(theta) * Math.sin(phi) * (theta<0.5*Math.PI?1:-1),
radius * Math.cos(theta) * Math.cos(phi) * (theta<0.5*Math.PI?1:-1),
0
);
camx.normalize();
var camy = new THREE.Vector3();
camy.cross(camz, camx);
focus.x = onMouseDownFocus.x + (radius / 400)*(camx.x * (onMouseDownPosition.x - event.clientX) + camy.x * (onMouseDownPosition.y - event.clientY));
focus.y = onMouseDownFocus.y + (radius / 400)*(camx.y * (onMouseDownPosition.x - event.clientX) + camy.y * (onMouseDownPosition.y - event.clientY));
focus.z = onMouseDownFocus.z + (radius / 400)*(camx.z * (onMouseDownPosition.x - event.clientX) + camy.z * (onMouseDownPosition.y - event.clientY));
update_camera_position();
} else if (event.ctrlKey) {
// console.log("Zoom");
if (! isCtrlDown) {
isCtrlDown = true;
onCtrlDownFov = camera.fov;
onMouseDownPosition.x = event.clientX;
onMouseDownPosition.y = event.clientY;
autoRescale = false;
container.style.cursor = "crosshair";
}
camera.fov = onCtrlDownFov + 20 * Math.atan((event.clientY - onMouseDownPosition.y)/50);
camera.fov = Math.max(1, Math.min(camera.fov, 150));
//console.log("fov"+camera.fov);
camera.updateProjectionMatrix();
//console.log(JSON.stringify(camera));
} else {
// console.log("Spin");
if (isCtrlDown || isShiftDown) {
onMouseDownPosition.x = event.clientX;
onMouseDownPosition.y = event.clientY;
isShiftDown = false;
isCtrlDown = false;
container.style.cursor = "pointer";
}
phi = 2 * Math.PI * (onMouseDownPosition.x - event.clientX) / 400 + onMouseDownPhi;
phi = (phi + 2 * Math.PI) % (2 * Math.PI);
theta = 2 * Math.PI * (onMouseDownPosition.y - event.clientY) / 400 + onMouseDownTheta;
var epsilon = 1e-12; // Prevents spinnging from getting stuck
theta = Math.max(Math.min(Math.PI - epsilon, theta), epsilon);
update_camera_position();
}
render();
} else {
container.style.cursor = "pointer";
}
}
function onDocumentMouseUp(event) {
event.preventDefault();
isMouseDown = false;
container.style.cursor = "pointer";
if (autoRescale) {
ScaleInView();
render();
}
positionAxes();
render();
positionticknums();
}
// Bind Mouse events
container.addEventListener('mousemove', onDocumentMouseMove, false);
container.addEventListener('mousedown', onDocumentMouseDown, false);
container.addEventListener('mouseup', onDocumentMouseUp, false);
onMouseDownPosition = new THREE.Vector2();
var autoRescale = true;
update_camera_position();
positionAxes();
render(); // Rendering twice updates camera.matrixWorldInverse so that ScaleInView works properly
ScaleInView();
render();
positionticknums();
break;
case 'List':
var copy = Object.assign({}, params);
var mess = [];
func.args.forEach(function(el) {
mess.push(interpretate(el, func, copy, mesh));
});
return mess;
break;
case 'Style':
var copy = Object.assign({}, params);
func.args.forEach(function(el) {
interpretate(el, func, copy, mesh);
});
break;
case 'Annotation':
func.args.forEach(function(el) {
interpretate(el, func, params, mesh);
});
break;
case 'GraphicsGroup':
var group = new THREE.Group();
var copy = Object.assign({}, params);
func.args.forEach(function(el) {
interpretate(el, func, copy, group);
});
mesh.add(group);
break;
case 'RGBColor':
if (func.args.length !== 3) throw "RGB values should be triple!"
var r = Math.round(255*interpretate(func.args[0]));
var g = Math.round(255*interpretate(func.args[1]));
var b = Math.round(255*interpretate(func.args[2]));
params.color = new THREE.Color("rgb("+r+","+g+","+b+")");
break;
case 'Opacity':
var o = interpretate(func.args[0]);
if (typeof o !== 'number') throw "Opacity must have number value!";
console.log(o);
params.opacity = o;
break;
case 'Thickness':
//params.thickness =
break;
case 'Arrowheads':
break;
case 'Arrow':
interpretate(func.args[0], func, params, mesh);
break;
case 'Tube':
var arr = interpretate(func.args[0]);
if (arr.length == 1) arr = arr[0];
if (arr.length !== 2) throw "Tube must have 2 vectors!";
var points = [new THREE.Vector4(...arr[0], 1),
new THREE.Vector4(...arr[1], 1)];
points.forEach(function(p) {
p = p.applyMatrix4(params.matrix);
});
var origin = points[0].clone();
var dir = points[1].add(points[0].negate());
var arrowHelper = new THREE.ArrowHelper(dir.normalize(), origin, dir.length(), params.color);
mesh.add(arrowHelper);
arrowHelper.line.material.linewidth = params.thickness;
break;
case 'Sphere':
var radius = 1;
if (func.args.length > 1) radius = func.args[1];
var material = new THREE.MeshLambertMaterial({
color:params.color,
transparent:false,
opacity:params.opacity,
});
function addSphere(cr) {
var origin = new THREE.Vector4(...cr, 1);
var geometry = new THREE.SphereGeometry( radius, 20, 20 );
var sphere = new THREE.Mesh( geometry, material );
sphere.position.x = origin.x;
sphere.position.y = origin.y;
sphere.position.z = origin.z;
mesh.add( sphere );
geometry.dispose();
}
var list = interpretate(func.args[0]);
if (list.length == 1) list=list[0];
if (list.length == 1) list=list[0];
if (list.length == 3) {
addSphere(list);
} else if (list.length > 3) {
list.forEach(function(el) {
addSphere(el);
});
} else {
console.log(list);
throw "List of coords. for sphere object is less 1";
}
material.dispose();
break;
case 'Cuboid':
//if (params.hasOwnProperty('geometry')) {
// var points = [new THREE.Vector4(...interpretate(func.args[0]), 1),
// new THREE.Vector4(...interpretate(func.args[1]), 1)];
//}
console.log("Cuboid");
var points, diff, origin;
if (func.args.length == 2) {
points = [new THREE.Vector4(...interpretate(func.args[0]), 1),
new THREE.Vector4(...interpretate(func.args[1]), 1)];
origin = points[0].clone().add(points[1].clone()).divideScalar(2);
diff = points[0].clone().add(points[1].clone().negate());
} else if (func.args.length == 1) {
p = interpretate(func.args[0]);
origin = new THREE.Vector4(...p, 1);
diff = new THREE.Vector4(1,1,1, 1);
//shift it
origin.add(diff.clone().divideScalar(2))
} else {
throw "Expected 2 or 1 arguments";
}
var geometry = new THREE.BoxGeometry(diff.x, diff.y, diff.z);
var material = new THREE.MeshLambertMaterial({
color:params.color,
transparent:true,
opacity:params.opacity,
depthWrite: true
});
//material.side = THREE.DoubleSide;
var cube = new THREE.Mesh( geometry, material );
//var tr = new THREE.Matrix4();
// tr.makeTranslation(origin.x,origin.y,origin.z);
//cube.applyMatrix(params.matrix.clone().multiply(tr));
cube.position.x = origin.x;
cube.position.y = origin.y;
cube.position.z = origin.z;
mesh.add(cube);
geometry.dispose();
material.dispose();
break;
case 'Rule':
switch(func.args[0]) {
}
break;
case 'Center':
return 'Center';
break;
case 'Tetrahedron':
var points = interpretate(func.args[0]);
var faces = [];
console.log("Points of tetrahedron:");
console.log(points);
faces.push([points[0], points[1], points[2]]);
faces.push([points[0], points[1], points[3]]);
faces.push([points[1], points[2], points[3]]);
faces.push([points[0], points[3], points[2]]);
var fake = ["List"];
var listVert = function(cord) {
return([
"List",
cord[0],
cord[1],
cord[2]
]);
}
faces.forEach(function(fs) {
var struc = [
"Polygon",
[
"List",
listVert(fs[0]),
listVert(fs[1]),
listVert(fs[2])
]
];
fake.push(struc);
});
console.log(fake);
interpretate(fake, func, params, mesh);
break;
case 'GeometricTransformation':
var group = new THREE.Group();
//Если center, то наверное надо приметь matrix
//к каждому объекту относительно родительской группы.
var p = interpretate(func.args[1]);
var centering = false;
var centrans = [];
if (p.length === 1) { p = p[0]; }
if (p.length === 1) { p = p[0]; }
else if (p.length === 2) {
console.log(p);
if (p[1] === 'Center') {
centering = true;
} else {
console.log("NON CENTERING ISSUE!!!");
console.log(p);
centrans = p[1];
console.log("???");
}
//return;
p = p[0];
}
if (p.length === 3) {
if (typeof p[0] === 'number') {
var dir = p;
var matrix = new THREE.Matrix4().makeTranslation(...dir,1);
} else {
//make it like Matrix4
p.forEach(function(el) {
el.push(0);
});
p.push([0,0,0,1]);