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ProjC.js
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/**
* @Author Haoyu Wei
* @Date 27 Nov 2019
* @Note Project C
*/
/** Global Variables */
// For Multiple Shaders
worldBox = new VBObox00(); // Ground Grid
partBox1 = new VBObox1(); // Without Lighting
partBox2 = new VBObox2(); // With Grouroud Shading, Robot
partBox3 = new VBObox3(); // With Phong Shading, Robot
partBox4 = new VBObox4(); // With Grouroud Shading, Sphere
partBox5 = new VBObox5(); // With Phong Shading, Sphere
partBox6 = new VBObox6(); // With Grouroud Shading, Tree
partBox7 = new VBObox7(); // With Phong Shading, Tree
partBox8 = new VBObox8(); // With Grouroud Shading, Heli
partBox9 = new VBObox9(); // With Phong Shading, Heli
var g_show00 = true;
var g_show1 = false;
var g_show2 = false;
var g_show3 = true;
var g_show4 = false;
var g_show5 = true;
var g_show6 = false;
var g_show7 = true;
var g_show8 = false;
var g_show9 = true;
// For 3D shapes
var floatsPerVertex = 12;
// For animation
var currentAngle = 0.0;
var walkAngle = 0.0;
var flyAngle = 0.0;
var sphAngle = 0.0;
var ANGLE_STEP = 45.0;
var walk_ANGLE_STEP = 30.0;
var fly_ANGLE_STEP = 60.0;
var sph_ANGLE_STEP = 30.0;
var rRobot = true; // if rotate whole robot
var rLArm = true; // robot left arm
var rRArm = true; // robot right arm
var rHead = true; // robot head
var rLower = true; // robot lower body
var rThing = true; // thing the robot holds
var bowStart = false; // if start bowing
var walkStart = false; // if start walking continuously
var stepStart = false; // if start walking step by step
var flyStart = true; // if helicopter start flying
var walkTmp = walk_ANGLE_STEP;
var direction = 1.0; // direction & flag of robot walking. 1 is walking around. +/-90 is right/left. 0/180 is foward/back.
var currLocX = 0.0; // current walking location on X axis.
var currLocZ = 0.0; // current walking location on Z axis.
var shapeChange = false; // whether helicopter has changed shape.
var hold;
var open = false;
// Mouse click and drag
var isDrag=false;
var xMclik=0.0;
var yMclik=0.0;
var xMdragTot=0;
var yMdragTot=0;
// View & Projection
var eyeX = 0.0;
var eyeY = 5.0;
var eyeZ = 1.0;
var atX = 0.0;
var atY = 0.0;
var atZ = 1.0;
var theta = 0.0; // turn camera horizontally to angle theta
var r = eyeY-atY; // radius of camera cylinder
var tilt = 0.0;
var fLeft = -2.0; // frustum paras
var fRight = 2.0;
var fBottom = -2.0;
var fTop = 2.0;
var fNear = 3.0;
var fFar = 100.0;
var frustum = false;
function main(){
canvas = document.getElementById('gl_canvas');
gl = getWebGLContext(canvas);
ctx = canvas.getContext("2d", {preserveDrawingBuffer: true});
if (!gl){
console.log('Failed to get the rendering context for WebGL');
return;
}
worldBox.init(gl);
partBox1.init(gl);
partBox2.init(gl);
partBox3.init(gl);
partBox4.init(gl);
partBox5.init(gl);
partBox6.init(gl);
partBox7.init(gl);
partBox8.init(gl);
partBox9.init(gl);
normalMatrix = new Matrix4();
vpMatrix = new Matrix4();
mvpMatrix = new Matrix4();
// Event register
window.addEventListener("mousedown", myMouseDown);
window.addEventListener("mousemove", myMouseMove);
window.addEventListener("mouseup", myMouseUp);
window.addEventListener("keydown", myKeyDown, false);
// Dat.gui
var GUIContent = function() {
this.stopRobot = function(){runStop()};
// this.walk = function(){walkEvent()};
// this.walkSpeed = 30;
this.bow = function(){bowEvent()};
// this.hold = '--select--';
this.stopHelicopter = function(){runStopHeli()};
this.speed = 60;
this.shapeChange = function(){shapeChange = !shapeChange};
this.frustum = false;
this.left = -2.0;
this.right = 2.0;
this.bottom = -2.0;
this.top = 2.0;
this.near = 3.0;
this.far = 100.0;
this.attenuation = 'none';
this.lampCameraOn = true;
this.lampWorld1On = true;
this.lampWorld2On = false;
this.ambient0 = amb.map(function(x){return x*255});
this.diffuse0 = dif.map(function(x){return x*255});
this.specular0 = spe.map(function(x){return x*255});
this.ambient1 = amb.map(function(x){return x*255});
this.diffuse1 = dif.map(function(x){return x*255});
this.specular1 = spe.map(function(x){return x*255});
this.ambient2 = amb.map(function(x){return x*255});
this.diffuse2 = dif.map(function(x){return x*255});
this.specular2 = spe.map(function(x){return x*255});
this.texture = true;
};
var text = new GUIContent();
var gui = new dat.GUI();
var robot = gui.addFolder('Robot');
robot.add(text, 'stopRobot');
robot.add(text, 'bow');
var heli = gui.addFolder('Helicopter');
heli.add(text, 'stopHelicopter');
heli.add(text, 'speed', 20, 100).onChange(function(newValue){fly_ANGLE_STEP = newValue;});
heli.add(text, 'shapeChange');
var view = gui.addFolder('View');
view.add(text, 'frustum').onChange(function(){frustum = !frustum});
view.add(text, 'left').onChange(function(newValue){fLeft = newValue;});
view.add(text, 'right').onChange(function(newValue){fRight = newValue;});
view.add(text, 'bottom').onChange(function(newValue){fBottom = newValue;});
view.add(text, 'top').onChange(function(newValue){fTop = newValue;});
view.add(text, 'near').onChange(function(newValue){fNear = newValue;});
view.add(text, 'far').onChange(function(newValue){fFar = newValue;});
var lamp = gui.addFolder('Lamps');
lamp.add(text, 'attenuation', ['none', '1/dis', '1/(dis*dis)']).onChange(function(newValue){
if (newValue == 'none'){
whichAttFunc = 0;
}else if(newValue == '1/dis'){
whichAttFunc = 1;
} else if (newValue == '1/(dis*dis)'){
whichAttFunc = 2;
}
})
var lampWorld1 = lamp.addFolder('lampWorld1');
lampWorld1.add(text, 'lampWorld1On').onChange(function(){lamp0On = !lamp0On;});
lampWorld1.addColor(text, 'ambient0').onChange(function(newValue){
lamp0.I_ambi.elements.set(newValue.map(function(x){return x/255}));
});
lampWorld1.addColor(text, 'diffuse0').onChange(function(newValue){
lamp0.I_diff.elements.set(newValue.map(function(x){return x/255}));
});
lampWorld1.addColor(text, 'specular0').onChange(function(newValue){
lamp0.I_spec.elements.set(newValue.map(function(x){return x/255}));
});
var lampCamera = lamp.addFolder('lampCamera');
lampCamera.add(text, 'lampCameraOn').onChange(function(){lamp1On = !lamp1On;});
lampCamera.addColor(text, 'ambient1').onChange(function(newValue){
lamp1.I_ambi.elements.set(newValue.map(function(x){return x/255}));
});
lampCamera.addColor(text, 'diffuse1').onChange(function(newValue){
lamp1.I_diff.elements.set(newValue.map(function(x){return x/255}));
});
lampCamera.addColor(text, 'specular1').onChange(function(newValue){
lamp1.I_spec.elements.set(newValue.map(function(x){return x/255}));
});
var lampWorld2 = lamp.addFolder('lampWorld2');
lampWorld2.add(text, 'lampWorld2On').onChange(function(){lamp2On = !lamp2On;});
lampWorld2.addColor(text, 'ambient2').onChange(function(newValue){
lamp2.I_ambi.elements.set(newValue.map(function(x){return x/255}));
});
lampWorld2.addColor(text, 'diffuse2').onChange(function(newValue){
lamp2.I_diff.elements.set(newValue.map(function(x){return x/255}));
});
lampWorld2.addColor(text, 'specular2').onChange(function(newValue){
lamp2.I_spec.elements.set(newValue.map(function(x){return x/255}));
});
lamp.open();
lampCamera.open();
lampWorld1.open();
lampWorld2.open();
gui.add(text, 'texture').onChange(function(newValue){
if (newValue){ isTex = 1; }
else { isTex = 0; }
});
gl.clearColor(0.53, 0.8, 0.92, 1.0);
gl.enable(gl.DEPTH_TEST);
var tick = function() {
currentAngle = animate(currentAngle); // Update the rotation angle
walkAngle = animateWalk(walkAngle);
flyAngle = animateFly(flyAngle);
sphAngle = animateSphere(sphAngle);
drawResize();
requestAnimationFrame(tick, canvas);
};
tick();
}
function drawResize(){
var nuCanvas = document.getElementById('gl_canvas'); // get current canvas
var nuGl = getWebGLContext(nuCanvas);
nuCanvas.width = innerWidth - 16;
nuCanvas.height = innerHeight*3/4 - 16;
drawAll(nuGl);
}
function drawAll(gl){
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
if (frustum){
vpMatrix.setFrustum(fLeft,fRight,fBottom,fTop,fNear,fFar);
} else{
var ratio = canvas.width/canvas.height;
vpMatrix.setPerspective(30, ratio, 1, 100);
}
vpMatrix.lookAt(eyeX,eyeY,eyeZ, atX,atY,atZ, 0.0,0.0,1.0);
if (g_show00){ // Ground Grid
worldBox.switchToMe();
worldBox.adjust();
worldBox.draw();
}
if (g_show1){ // without light
partBox1.switchToMe();
partBox1.adjust();
partBox1.draw();
}
if (g_show2){ // Gouroud, Whole
partBox2.switchToMe();
partBox2.adjust();
partBox2.draw();
}
if (g_show3){ // Phong, Whole
partBox3.switchToMe();
partBox3.adjust();
partBox3.draw();
}
if (g_show4){ // Phong, Whole
partBox4.switchToMe();
partBox4.adjust();
partBox4.draw();
}
if (g_show5){ // Phong, Whole
partBox5.switchToMe();
partBox5.adjust();
partBox5.draw();
}
if (g_show6){ // Phong, Whole
partBox6.switchToMe();
partBox6.adjust();
partBox6.draw();
}
if (g_show7){ // Phong, Whole
partBox7.switchToMe();
partBox7.adjust();
partBox7.draw();
}
if (g_show8){ // Phong, Whole
partBox8.switchToMe();
partBox8.adjust();
partBox8.draw();
}
if (g_show9){ // Phong, Whole
partBox9.switchToMe();
partBox9.adjust();
partBox9.draw();
}
}
/*************Animations here***************/
var g_last = Date.now();
function animate(angle) {
var now = Date.now();
var elapsed = now - g_last;
g_last = now;
if(angle > 50.0 && ANGLE_STEP > 0) ANGLE_STEP = -ANGLE_STEP;
if(angle < -50.0 && ANGLE_STEP < 0) ANGLE_STEP = -ANGLE_STEP;
var newAngle = angle + (ANGLE_STEP * elapsed) / 1000.0;
return newAngle %= 360*3;
}
var g_last1 = Date.now();
function animateWalk(angle) {
var now = Date.now();
var elapsed = now - g_last1;
g_last1 = now;
if(angle >= 180.0 && walk_ANGLE_STEP > 0) walk_ANGLE_STEP = -walk_ANGLE_STEP;
if(angle <= -180.0 && walk_ANGLE_STEP < 0) walk_ANGLE_STEP = -walk_ANGLE_STEP;
var newAngle = angle + (walk_ANGLE_STEP * elapsed) / 1000.0;
return newAngle %= 360*3;
}
var g_last2 = Date.now();
function animateFly(angle) {
var now = Date.now();
var elapsed = now - g_last2;
g_last2 = now;
// if(angle >= 180.0 && fly_ANGLE_STEP > 0) fly_ANGLE_STEP = -fly_ANGLE_STEP;
// if(angle <= -180.0 && fly_ANGLE_STEP < 0) fly_ANGLE_STEP = -fly_ANGLE_STEP;
var newAngle = angle + (fly_ANGLE_STEP * elapsed) / 1000.0;
return newAngle %= 360*3;
}
var g_last3 = Date.now();
function animateSphere(angle) {
var now = Date.now();
var elapsed = now - g_last3;
g_last3 = now;
var newAngle = angle + (sph_ANGLE_STEP * elapsed) / 1000.0;
return newAngle %= 360*3;
}
function walkAround(modelMatrix){
rRobot = false;
rHead = false;
if (direction == 1){ // not specified. walk around
modelMatrix.translate(-walkAngle/200, 0.0, 0.0);
// left
if (walk_ANGLE_STEP>0 || (walk_ANGLE_STEP==0 && walkTmp >0)){
modelMatrix.rotate(90, 0,1,0);
}else{ // right
modelMatrix.rotate(-90, 0,1,0);
}
} else { // walk a step
modelMatrix.translate(currLocX, 0.0, currLocZ);
modelMatrix.rotate(direction, 0,1,0);
}
return modelMatrix;
}
function bow(modelMatrix, bowAngle){
if (bowAngle<0){
modelMatrix.translate(0.0, -unitLen*0.1, 0.0);
modelMatrix.rotate(bowAngle, 1,0,0);
modelMatrix.translate(0.0, unitLen*0.1, 0.0);
}
}
function flyAround(modelMatrix){
if (flyAngle < 180 || (flyAngle>360 && flyAngle<540) || (flyAngle>720 && flyAngle<900)){
modelMatrix.translate(Math.cos(flyAngle/360*6)*1.8-0.1, 0, Math.sin(flyAngle/360*6)*0.5);
} else{
modelMatrix.rotate(180, 0,1,0);
modelMatrix.translate(-Math.cos(flyAngle/360*6)*1.9-0.1, 0, -Math.sin(flyAngle/360*6)*0.5);
}
}
/*************Make shapes here***************/
function makeGroundGrid(){
var xcount = 100;
var ycount = 100;
var xymax = 50.0;
var xColr = new Float32Array([1.0, 1.0, 0.3]);
var yColr = new Float32Array([0.5, 1.0, 0.5]);
gndVerts = new Float32Array(7*2*(xcount+ycount));
var xgap = xymax/(xcount-1);
var ygap = xymax/(ycount-1);
for(v=0, j=0; v<2*xcount; v++, j+= 7) {
if(v%2==0) {
gndVerts[j ] = -xymax + (v)*xgap;
gndVerts[j+1] = -xymax;
gndVerts[j+2] = 0.0;
gndVerts[j+3] = 1.0;
}
else {
gndVerts[j ] = -xymax + (v-1)*xgap;
gndVerts[j+1] = xymax;
gndVerts[j+2] = 0.0;
gndVerts[j+3] = 1.0;
}
gndVerts[j+4] = xColr[0];
gndVerts[j+5] = xColr[1];
gndVerts[j+6] = xColr[2];
}
for(v=0; v<2*ycount; v++, j+= 7) {
if(v%2==0) {
gndVerts[j ] = -xymax;
gndVerts[j+1] = -xymax + (v)*ygap;
gndVerts[j+2] = 0.0;
gndVerts[j+3] = 1.0;
}
else {
gndVerts[j ] = xymax;
gndVerts[j+1] = -xymax + (v-1)*ygap;
gndVerts[j+2] = 0.0;
gndVerts[j+3] = 1.0;
}
gndVerts[j+4] = yColr[0];
gndVerts[j+5] = yColr[1];
gndVerts[j+6] = yColr[2];
}
}
function makeSphere() {
var slices =12;
var sliceVerts = 21;
var topColr = new Float32Array([0.0, 0.5, 0.0]);
var botColr = new Float32Array([0.0, 0.7, 0.0]);
var errColr = new Float32Array([0.0, 0.5, 0.0]);
var sliceAngle = Math.PI/slices;
sphVerts = new Float32Array(((slices*2*sliceVerts)-2) * floatsPerVertex);
var cosBot = 0.0;
var sinBot = 0.0;
var cosTop = 0.0;
var sinTop = 0.0;
var j = 0;
var isFirstSlice = 1;
var isLastSlice = 0;
for(s=0; s<slices; s++) {
if(s==0) {
isFirstSlice = 1;
cosBot = 0.0;
sinBot = -1.0;
}
else {
isFirstSlice = 0;
cosBot = cosTop;
sinBot = sinTop;
}
cosTop = Math.cos((-Math.PI/2) +(s+1)*sliceAngle);
sinTop = Math.sin((-Math.PI/2) +(s+1)*sliceAngle);
if(s==slices-1) isLastSlice=1;
for(v=isFirstSlice; v< 2*sliceVerts-isLastSlice; v++,j+=floatsPerVertex)
{
if(v%2 ==0) {
sphVerts[j ] = cosBot * Math.cos(Math.PI * v/sliceVerts);
sphVerts[j+1] = cosBot * Math.sin(Math.PI * v/sliceVerts);
sphVerts[j+2] = sinBot; // z
sphVerts[j+3] = 1.0;
sphVerts[j+7] = cosBot * Math.cos(Math.PI * v/sliceVerts);
sphVerts[j+8] = cosBot * Math.sin(Math.PI * v/sliceVerts);
sphVerts[j+9] = sinBot; // z
}
else {
sphVerts[j ] = cosTop * Math.cos(Math.PI * (v-1)/sliceVerts);
sphVerts[j+1] = cosTop * Math.sin(Math.PI * (v-1)/sliceVerts);
sphVerts[j+2] = sinTop;
sphVerts[j+3] = 1.0;
sphVerts[j+7] = cosTop * Math.cos(Math.PI * (v-1)/sliceVerts);
sphVerts[j+8] = cosTop * Math.sin(Math.PI * (v-1)/sliceVerts);
sphVerts[j+9] = sinTop;
}
if(v==0) {
sphVerts[j+4]=errColr[0];
sphVerts[j+5]=errColr[1];
sphVerts[j+6]=errColr[2];
}
else if(isFirstSlice==1) {
sphVerts[j+4]=botColr[0];
sphVerts[j+5]=botColr[1];
sphVerts[j+6]=botColr[2];
}
else if(isLastSlice==1) {
sphVerts[j+4]=topColr[0];
sphVerts[j+5]=topColr[1];
sphVerts[j+6]=topColr[2];
}
else {
sphVerts[j+4]= 0.0;
sphVerts[j+5]= 0.5;
sphVerts[j+6]= 0.0;
}
sphVerts[j+10] = 0.0;
sphVerts[j+11] = 0.0;
}
}
}
function makeSphere1() {
var slices =12;
var sliceVerts = 21;
var topColr = new Float32Array([1.0, 0.0, 1.0]);
var botColr = new Float32Array([1.0, 0.0, 1.0]);
var errColr = new Float32Array([1.0, 0.0, 1.0]);
var sliceAngle = Math.PI/slices;
sphVerts1 = new Float32Array(((slices*2*sliceVerts)-2) * floatsPerVertex);
var cosBot = 0.0;
var sinBot = 0.0;
var cosTop = 0.0;
var sinTop = 0.0;
var j = 0;
var isFirstSlice = 1;
var isLastSlice = 0;
for(s=0; s<slices; s++) {
if(s==0) {
isFirstSlice = 1;
cosBot = 0.0;
sinBot = -1.0;
}
else {
isFirstSlice = 0;
cosBot = cosTop;
sinBot = sinTop;
}
cosTop = Math.cos((-Math.PI/2) +(s+1)*sliceAngle);
sinTop = Math.sin((-Math.PI/2) +(s+1)*sliceAngle);
if(s==slices-1) isLastSlice=1;
for(v=isFirstSlice; v< 2*sliceVerts-isLastSlice; v++,j+=floatsPerVertex)
{
if(v%2 ==0) {
sphVerts1[j ] = cosBot * Math.cos(Math.PI * v/sliceVerts);
sphVerts1[j+1] = cosBot * Math.sin(Math.PI * v/sliceVerts);
sphVerts1[j+2] = sinBot; // z
sphVerts1[j+3] = 1.0;
sphVerts1[j+7] = cosBot * Math.cos(Math.PI * v/sliceVerts);
sphVerts1[j+8] = cosBot * Math.sin(Math.PI * v/sliceVerts);
sphVerts1[j+9] = sinBot; // w.
}
else {
sphVerts1[j ] = cosTop * Math.cos(Math.PI * (v-1)/sliceVerts);
sphVerts1[j+1] = cosTop * Math.sin(Math.PI * (v-1)/sliceVerts);
sphVerts1[j+2] = sinTop;
sphVerts1[j+3] = 1.0;
sphVerts1[j+7] = cosTop * Math.cos(Math.PI * (v-1)/sliceVerts);
sphVerts1[j+8] = cosTop * Math.sin(Math.PI * (v-1)/sliceVerts);
sphVerts1[j+9] = sinTop;
}
if(v==0) {
sphVerts1[j+4]=errColr[0];
sphVerts1[j+5]=errColr[1];
sphVerts1[j+6]=errColr[2];
}
else if(isFirstSlice==1) {
sphVerts1[j+4]=botColr[0];
sphVerts1[j+5]=botColr[1];
sphVerts1[j+6]=botColr[2];
}
else if(isLastSlice==1) {
sphVerts1[j+4]=topColr[0];
sphVerts1[j+5]=topColr[1];
sphVerts1[j+6]=topColr[2];
}
else {
sphVerts1[j+4]= 1.0;
sphVerts1[j+5]= 0.0;
sphVerts1[j+6]= 1.0;
}
sphVerts1[j+10] = 0.0; // Texture Coord
sphVerts1[j+11] = 0.0;
}
}
}
function makeCube(){
var faceVerts = 4;
cubeVerts = new Float32Array((2*faceVerts+1)*6*floatsPerVertex);
upColor = new Float32Array([0.1, 0.3, 0.1]);
unitLen = Math.sqrt(2);
// up face
for (v = 0,j = 0; v < (2*faceVerts+1); v++, j += floatsPerVertex){
if (v%2 == 0){
cubeVerts[j] = Math.cos(Math.PI*v/4 + Math.PI/4);
cubeVerts[j+1] = unitLen/2;
cubeVerts[j+2] = -Math.sin(Math.PI*v/4 + Math.PI/4);
cubeVerts[j+3] = 1.0;
cubeVerts[j+4] = upColor[0];
cubeVerts[j+5] = upColor[1];
cubeVerts[j+6] = upColor[2];
cubeVerts[j+7] = 0.0;
cubeVerts[j+8] = 1.0;
cubeVerts[j+9] = 0.0;
} else { // central vertices
cubeVerts[j] = 0.0;
cubeVerts[j+1] = unitLen/2;
cubeVerts[j+2] = 0.0;
cubeVerts[j+3] = 1.0;
cubeVerts[j+4] = upColor[0];
cubeVerts[j+5] = upColor[1];
cubeVerts[j+6] = upColor[2];
cubeVerts[j+7] = 0.0;
cubeVerts[j+8] = 1.0;
cubeVerts[j+9] = 0.0;
}
cubeVerts[j+10] = 0.0; // Texture Coord
cubeVerts[j+11] = 0.0;
}
// bottom face
for (v = 0; v < (2*faceVerts+1); v++, j += floatsPerVertex){
if (v%2 == 0){
cubeVerts[j] = Math.cos(Math.PI*v/faceVerts + Math.PI/4);
cubeVerts[j+1] = -unitLen/2;
cubeVerts[j+2] = -Math.sin(Math.PI*v/faceVerts + Math.PI/4);
cubeVerts[j+3] = 1.0;
cubeVerts[j+4] = 0.0;
cubeVerts[j+5] = 0.2;
cubeVerts[j+6] = 0.0;
cubeVerts[j+7] = 0.0;
cubeVerts[j+8] = -1.0;
cubeVerts[j+9] = 0.0;
} else { // central vertices
cubeVerts[j] = 0.0;
cubeVerts[j+1] = -unitLen/2;
cubeVerts[j+2] = 0.0;
cubeVerts[j+3] = 1.0;
cubeVerts[j+4] = 0.0;
cubeVerts[j+5] = 0.2;
cubeVerts[j+6] = 0.0;
cubeVerts[j+7] = 0.0;
cubeVerts[j+8] = -1.0;
cubeVerts[j+9] = 0.0;
}
cubeVerts[j+10] = 0.0; // Texture Coord
cubeVerts[j+11] = 0.0;
}
// back
for (v = 0; v < (2*faceVerts+1); v++, j += floatsPerVertex){
if (v%2 == 0){
cubeVerts[j] = Math.cos(Math.PI*v/faceVerts + Math.PI/4);
cubeVerts[j+1] = Math.sin(Math.PI*v/faceVerts + Math.PI/4);
cubeVerts[j+2] = unitLen/2;
cubeVerts[j+3] = 1.0;
cubeVerts[j+4] = 0.6;
cubeVerts[j+5] = 0.0;
cubeVerts[j+6] = 0.6;
cubeVerts[j+7] = 0.0;
cubeVerts[j+8] = 0.0;
cubeVerts[j+9] = 1.0;
} else { // central vertices
cubeVerts[j] = 0.0;
cubeVerts[j+1] = 0.0;
cubeVerts[j+2] = unitLen/2;
cubeVerts[j+3] = 1.0;
cubeVerts[j+4] = 0.6;
cubeVerts[j+5] = 0.0;
cubeVerts[j+6] = 0.6;
cubeVerts[j+7] = 0.0;
cubeVerts[j+8] = 0.0;
cubeVerts[j+9] = 1.0;
}
cubeVerts[j+10] = 0.0; // Texture Coord
cubeVerts[j+11] = 0.0;
}
// front
for (v = 0; v < (2*faceVerts+1); v++, j += floatsPerVertex){
if (v%2 == 0){
cubeVerts[j] = Math.cos(Math.PI*v/faceVerts + Math.PI/4);
cubeVerts[j+1] = Math.sin(Math.PI*v/faceVerts + Math.PI/4);
cubeVerts[j+2] = -unitLen/2;
cubeVerts[j+3] = 1.0;
cubeVerts[j+4] = 0.8;
cubeVerts[j+5] = 0.0;
cubeVerts[j+6] = 0.8;
cubeVerts[j+7] = 0.0;
cubeVerts[j+8] = 0.0;
cubeVerts[j+9] = -1.0;
} else { // central vertices
cubeVerts[j] = 0.0;
cubeVerts[j+1] = 0.0;
cubeVerts[j+2] = -unitLen/2;
cubeVerts[j+3] = 1.0;
cubeVerts[j+4] = 0.8;
cubeVerts[j+5] = 0.0;
cubeVerts[j+6] = 0.8;
cubeVerts[j+7] = 0.0;
cubeVerts[j+8] = 0.0;
cubeVerts[j+9] = -1.0;
}
cubeVerts[j+10] = 0.0; // Texture Coord
cubeVerts[j+11] = 0.0;
}
// right
for (v = 0; v < (2*faceVerts+1); v++, j += floatsPerVertex){
if (v%2 == 0){
cubeVerts[j] = unitLen/2;
cubeVerts[j+1] = Math.sin(Math.PI*v/faceVerts + Math.PI/4);
cubeVerts[j+2] = -Math.cos(Math.PI*v/faceVerts + Math.PI/4);
cubeVerts[j+3] = 1.0;
cubeVerts[j+4] = 0.0;
cubeVerts[j+5] = 0.0;
cubeVerts[j+6] = 1.0;
cubeVerts[j+7] = 1.0;
cubeVerts[j+8] = 0.0;
cubeVerts[j+9] = 0.0;
} else { // central vertices
cubeVerts[j] = unitLen/2;
cubeVerts[j+1] = 0.0;
cubeVerts[j+2] = 0.0;
cubeVerts[j+3] = 1.0;
cubeVerts[j+4] = 0.0;
cubeVerts[j+5] = 0.0;
cubeVerts[j+6] = 1.0;
cubeVerts[j+7] = 1.0;
cubeVerts[j+8] = 0.0;
cubeVerts[j+9] = 0.0;
}
cubeVerts[j+10] = 0.0; // Texture Coord
cubeVerts[j+11] = 0.0;
}
// left
for (v = 0; v < (2*faceVerts+1); v++, j += floatsPerVertex){
if (v%2 == 0){
cubeVerts[j] = -unitLen/2;
cubeVerts[j+1] = Math.sin(Math.PI*v/faceVerts + Math.PI/4);
cubeVerts[j+2] = -Math.cos(Math.PI*v/faceVerts + Math.PI/4);
cubeVerts[j+3] = 1.0;
cubeVerts[j+4] = 0.0;
cubeVerts[j+5] = 0.0;
cubeVerts[j+6] = 0.5;
cubeVerts[j+7] = -1.0;
cubeVerts[j+8] = 0.0;
cubeVerts[j+9] = 0.0;
} else { // central vertices
cubeVerts[j] = -unitLen/2;
cubeVerts[j+1] = 0.0;
cubeVerts[j+2] = 0.0;
cubeVerts[j+3] = 1.0;
cubeVerts[j+4] = 0.0;
cubeVerts[j+5] = 0.0;
cubeVerts[j+6] = 0.5;
cubeVerts[j+7] = -1.0;
cubeVerts[j+8] = 0.0;
cubeVerts[j+9] = 0.0;
}
cubeVerts[j+10] = 0.0; // Texture Coord
cubeVerts[j+11] = 0.0;
}
}
function makeCylinder() {
var topColr = new Float32Array([0.8, 0.8, 0.0]); // light yellow top,
var walColr = new Float32Array([0.0, 0.5, 0.5]); // dark green walls,
var botColr = new Float32Array([0.2, 0.6, 0.2]); // light blue bottom,
var ctrColr = new Float32Array([0.1, 0.1, 0.1]); // near black end-cap centers,
var errColr = new Float32Array([0.2, 0.6, 0.2]); // Bright-red trouble color.
var capVerts = 20;
var topRadius = 0.9;
cylVerts = new Float32Array( ((capVerts*6) -2) * floatsPerVertex);
for(v=0,j=0; v<(2*capVerts)-1; v++,j+=floatsPerVertex) {
if(v%2 ==0)
{
cylVerts[j ] = Math.cos(Math.PI*v/capVerts); // x
cylVerts[j+1] = Math.sin(Math.PI*v/capVerts); // y
cylVerts[j+2] =-1.0; // z
cylVerts[j+3] = 1.0; // w.
// r,g,b = botColr[]
cylVerts[j+4]=botColr[0];
cylVerts[j+5]=botColr[1];
cylVerts[j+6]=botColr[2];
}
else { // put odd# vertices at center of cylinder's bottom cap:
cylVerts[j ] = 0.0; // x,y,z,w == 0,0,-1,1; centered on z axis at -1.
cylVerts[j+1] = 0.0;
cylVerts[j+2] =-1.0;
cylVerts[j+3] = 1.0; // r,g,b = ctrColr[]
cylVerts[j+4]=ctrColr[0];
cylVerts[j+5]=ctrColr[1];
cylVerts[j+6]=ctrColr[2];
}
cylVerts[j+7] = 0.0;
cylVerts[j+8] = 0.0;
cylVerts[j+9] = -1.0;
cylVerts[j+10] = 0.0; // Texture Coord
cylVerts[j+11] = 0.0;
}
// Create the cylinder side walls
for(v=0; v< 2*capVerts; v++, j+=floatsPerVertex) {
if(v%2==0) {
cylVerts[j ] = Math.cos(Math.PI*(v)/capVerts); // x
cylVerts[j+1] = Math.sin(Math.PI*(v)/capVerts); // y
cylVerts[j+2] =-1.0; // ==z BOTTOM cap,
cylVerts[j+3] = 1.0; // w.
cylVerts[j+4]=walColr[0];
cylVerts[j+5]=walColr[1];
cylVerts[j+6]=walColr[2];
if(v==0) {
cylVerts[j+4] = errColr[0];
cylVerts[j+5] = errColr[1];
cylVerts[j+6] = errColr[2];
}
cylVerts[j+7] = Math.cos(Math.PI*(v)/capVerts);
cylVerts[j+8] = Math.sin(Math.PI*(v)/capVerts);
cylVerts[j+9] = 0.0;
}
else {
cylVerts[j ] = topRadius * Math.cos(Math.PI*(v-1)/capVerts); // x
cylVerts[j+1] = topRadius * Math.sin(Math.PI*(v-1)/capVerts); // y
cylVerts[j+2] = 1.0; // == z TOP cap,
cylVerts[j+3] = 1.0; // w.
// r,g,b = walColr;
cylVerts[j+4]=walColr[0];
cylVerts[j+5]=walColr[1];
cylVerts[j+6]=walColr[2];
cylVerts[j+7] = topRadius * Math.cos(Math.PI*(v-1)/capVerts);
cylVerts[j+8] = topRadius * Math.sin(Math.PI*(v-1)/capVerts);
cylVerts[j+9] = 0.0;
}
cylVerts[j+10] = 0.0; // Texture Coord
cylVerts[j+11] = 0.0;
}
// Complete the cylinder with its top cap
for(v=0; v < (2*capVerts -1); v++, j+= floatsPerVertex) {
// count vertices from zero again, and
if(v%2==0) { // position even #'d vertices around top cap's outer edge.
cylVerts[j ] = topRadius * Math.cos(Math.PI*(v)/capVerts); // x
cylVerts[j+1] = topRadius * Math.sin(Math.PI*(v)/capVerts); // y
cylVerts[j+2] = 1.0; // z
cylVerts[j+3] = 1.0; // w.
cylVerts[j+4]=topColr[0];
cylVerts[j+5]=topColr[1];
cylVerts[j+6]=topColr[2];
if(v==0) {
cylVerts[j+4] = errColr[0];
cylVerts[j+5] = errColr[1];
cylVerts[j+6] = errColr[2];
}
}
else { // position odd#'d vertices at center of the top cap:
cylVerts[j ] = 0.0; // x,y,z,w == 0,0,-1,1
cylVerts[j+1] = 0.0;
cylVerts[j+2] = 1.0;
cylVerts[j+3] = 1.0;
cylVerts[j+4]=ctrColr[0];
cylVerts[j+5]=ctrColr[1];
cylVerts[j+6]=ctrColr[2];
}
cylVerts[j+7] = 0.0;
cylVerts[j+8] = 0.0;
cylVerts[j+9] = 1.0;
cylVerts[j+10] = 0.0; // Texture Coord
cylVerts[j+11] = 0.0;
}
}
// function makeTorus() {
// var rTube = 0.07;
// var rBend = 0.7;
// var tubeRings = 23;
// var ringSides = 13;
// torVerts = new Float32Array(floatsPerVertex*(2*ringSides*tubeRings +2));
// var phi=0, theta=0;
// var thetaStep = 2*Math.PI/tubeRings;
// var phiHalfStep = Math.PI/ringSides;
// // (WHY HALF? 2 vertices per step in phi)
// for(s=0,j=0; s<tubeRings; s++)
// {
// for(v=0; v< 2*ringSides; v++, j+=floatsPerVertex)
// {
// if(v%2==0) {
// torVerts[j ] = (rBend + rTube*Math.cos((v)*phiHalfStep)) *
// Math.cos((s)*thetaStep);
// torVerts[j+1] = (rBend + rTube*Math.cos((v)*phiHalfStep)) *
// Math.sin((s)*thetaStep);
// torVerts[j+2] = -rTube*Math.sin((v)*phiHalfStep);
// torVerts[j+3] = 1.0; // w
// }
// else { // odd #'d vertices at top of slice (s+1);
// // at same phi used at bottom of slice (v-1)
// torVerts[j ] = (rBend + rTube*Math.cos((v-1)*phiHalfStep)) *
// Math.cos((s+1)*thetaStep);
// // x = (rBend + rTube*cos(phi)) * cos(NextTheta)
// torVerts[j+1] = (rBend + rTube*Math.cos((v-1)*phiHalfStep)) *
// Math.sin((s+1)*thetaStep);
// // y = (rBend + rTube*cos(phi)) * sin(NextTheta)
// torVerts[j+2] = -rTube*Math.sin((v-1)*phiHalfStep);
// // z = -rTube * sin(phi)
// torVerts[j+3] = 1.0; // w
// }
// if(v==0 && s!=0) { // 'troublesome' vertex shared by step & 2 rings
// torVerts[j+4] = 1.0; // BRIGHT RED to show its location.
// torVerts[j+5] = 0.2;
// torVerts[j+6] = 0.2;
// }
// else {
// torVerts[j+4] = Math.random()/2; // random color 0.0 <= R < 0.5
// torVerts[j+5] = Math.random()/2; // random color 0.0 <= G < 0.5
// torVerts[j+6] = Math.random()/2; // random color 0.0 <= B < 0.5
// }
// }
// }
// torVerts[j ] = rBend + rTube; // copy vertex zero;
// // x = (rBend + rTube*cos(phi==0)) * cos(theta==0)
// torVerts[j+1] = 0.0;
// // y = (rBend + rTube*cos(phi==0)) * sin(theta==0)
// torVerts[j+2] = 0.0;
// // z = -rTube * sin(phi==0)
// torVerts[j+3] = 1.0; // w
// torVerts[j+4] = Math.random()/2; // random color 0.0 <= R < 0.5
// torVerts[j+5] = Math.random()/2; // random color 0.0 <= G < 0.5
// torVerts[j+6] = Math.random()/2; // random color 0.0 <= B < 0.5
// j+=7; // go to next vertex:
// torVerts[j ] = (rBend + rTube) * Math.cos(thetaStep);
// // x = (rBend + rBar*cos(phi==0)) * cos(theta==thetaStep)
// torVerts[j+1] = (rBend + rTube) * Math.sin(thetaStep);
// // y = (rBend + rTube*cos(phi==0)) * sin(theta==thetaStep)
// torVerts[j+2] = 0.0;
// // z = -rTube * sin(phi==0)
// torVerts[j+3] = 1.0; // w
// torVerts[j+4] = Math.random()/2; // random color 0.0 <= R < 0.5
// torVerts[j+5] = Math.random()/2; // random color 0.0 <= G < 0.5
// torVerts[j+6] = Math.random()/2; // random color 0.0 <= B < 0.5
// }
function makePyramid() {
botVert = 4; // number of vertices on the bottom
pyrVerts = new Float32Array((4*botVert+3)*floatsPerVertex);
// bottom
for (v = 0, j = 0; v < 2*botVert+2; v++, j += floatsPerVertex){
if (v%2 == 0){
pyrVerts[j] = Math.cos(Math.PI*v/botVert);
pyrVerts[j+1] = Math.sin(Math.PI*v/botVert);
pyrVerts[j+2] = 0.0;
pyrVerts[j+3] = 1.0;
pyrVerts[j+4] = 0.3;
pyrVerts[j+5] = 0.3;
pyrVerts[j+6] = 0.3;
}else{
pyrVerts[j] = 0.0;
pyrVerts[j+1] = 0.0;
pyrVerts[j+2] = 0.0;
pyrVerts[j+3] = 1.0;
pyrVerts[j+4] = 0.3;
pyrVerts[j+5] = 0.3;
pyrVerts[j+6] = 0.3;
}
pyrVerts[j+7] = 0.0;
pyrVerts[j+8] = 0.0;
pyrVerts[j+9] = 1.0;
pyrVerts[j+10] = 0.0; // Texture Coord
pyrVerts[j+11] = 0.0;
}
// wall
for (v = 0; v < 2*botVert+1; v++, j+=floatsPerVertex){
if (v%2 == 0){
pyrVerts[j] = Math.cos(Math.PI*v/botVert);
pyrVerts[j+1] = Math.sin(Math.PI*v/botVert);
pyrVerts[j+2] = 0.0;
pyrVerts[j+3] = 1.0;
pyrVerts[j+4] = 0.3;
pyrVerts[j+5] = 0.5;