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index.html
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<script src=lib6.js></script>
<body bgcolor=black text=white link=white alink=white vlink=white>
<center>
<canvas id='canvas1' width=800 height=800></canvas>
</center>
</body>
<!!------------------------ VERTEX SHADER ------------------------>
<script id='my_vertex_shader' type='x-shader/x-vertex'>
attribute vec3 aPos;
attribute vec3 aNor;
attribute vec2 aUV ; // WE HAVE ADDED A NEW ATTRIBUTE
uniform mat4 uMat;
varying vec3 vPos;
varying vec3 vNor;
varying vec2 vUV ; // AND A NEW VARYING VARIABLE
uniform float uFL;
mat4 inverse(mat4 m) {
float x = dot(m[0],m[0]), y = dot(m[1],m[1]), z = dot(m[2],m[2]);
return mat4(m[0].x / x, m[1].x / y, m[2].x / z, 0.,
m[0].y / x, m[1].y / y, m[2].y / z, 0.,
m[0].z / x, m[1].z / y, m[2].z / z, 0.,
-dot(m[0],m[3])/x, -dot(m[1],m[3])/y, -dot(m[2],m[3])/z, 1.);
}
void main() {
vec4 pos = uMat * vec4(aPos, 1.);
pos /= 1. - pos.z / uFL;
gl_Position = vec4(pos.xyz, 1.);
vPos = aPos;
vNor = (vec4(aNor,.0) * inverse(uMat)).xyz;
vUV = aUV ; // IN THE VERTEX SHADER, WE JUST NEED TO COPY aUV into vUV
}
</script>
<!!-------------------- FRAGMENT SHADER --------------------------->
<script id='my_fragment_shader' type='x-shader/x-fragment'>
uniform float uFL;
uniform mat3 uL[2];
uniform mat4 uM;
uniform float uTime;
uniform sampler2D uSampler[2];
uniform vec3 uTexture;
varying vec3 vNor;
varying vec3 vPos;
varying vec2 vUV ;
void main() {
vec3 normal = normalize(vNor);
vec3 R = reflect(vec3(0.,0.,-1.), normal);
vec2 uv = vUV;
vec3 color = uM[0].rgb;
for (int n = 0 ; n < 2 ; n++)
color += uL[n][1] * (
uM[1].rgb * max(0.,dot(normal, uL[n][0])) +
uM[2].rgb * pow(max(0., dot(R, uL[n][0])), uM[2].a) );
color *= uTexture.x*texture2D(uSampler[0], uv).xyz + uTexture.y*texture2D(uSampler[1], uv).xyz + uTexture.z;
gl_FragColor = vec4(sqrt(color), 1.0);
}
</script>
<!!------------------- DESCRIPTIVE TITLE ------------------------>
<script id='my_title' type='text/html'>
<font face=helvetica> <br>GO! PORYGON Z!
</script>
<!!------------------ GENERAL HTML SUPPORT ---------------------->
<script>
var vs = my_vertex_shader.innerHTML,
fs = my_fragment_shader.innerHTML;
fs = fs.substring(1, fs.length);
document.body.innerHTML = [''
,'<center><font size=12 color=#b0b0b0>' + my_title.innerHTML + '</center>'
,'<TABLE cellspacing=0 cellpadding=0><TR>'
,'<td width=50></td><td><font color=red size=5><div id=errorMessage> </div></font></td>'
,'</TR><TR>'
,'<table cellspacing=10>'
,'<tr>'
,'</td><td valign=top>' + document.body.innerHTML + '</td>'
,'<td valign=top><font size=2 color=red><div id=errorMarker> </div></font></td>'
,'<td valign=top>'
,'<textArea id=textArea spellcheck=false '
,'style="font:20px courier;outline-width:0;border-style:none;resize:none;overflow:scroll;"'
,'></textArea>'
,'<img src="PorygonZ_FullSprite.png" alt="Example Photo of Pokemon Porygon Z">'
,'</tr></table>'
,'</TR></TABLE>'
].join('');
var i, text = fs.split('\n'), cols = 0;
for (i = 0 ; i < text.length ; i++)
cols = Math.max(cols, text[i].length);
textArea.rows = 30;
textArea.cols = cols + 2;
textArea.value = fs;
textArea.style.backgroundColor = '#202020';
textArea.style.color = 'white';
textArea.onkeyup = function() { canvas1.setShaders(vs, this.value); isFirstTime = true; }
let startTime = Date.now();
//------------------------- BUILDING PARAMETRIC MESH OBJECTS -------------------------
let sphere = (u,v) => {
let theta = 2 * Math.PI * u,
phi = Math.PI * (v - .5);
let x = Math.cos(theta) * Math.cos(phi),
y = Math.sin(theta) * Math.cos(phi),
z = Math.sin(phi);
return [ x,y,z, x,y,z, u,v ];
}
let halfsphere = (u,v) => {
let theta = Math.PI * u,
phi = Math.PI * (v - .5);
let x = Math.cos(theta) * Math.cos(phi),
y = Math.sin(theta) * Math.cos(phi),
z = Math.sin(phi);
return [ x,y,z, x,y,z, u,v ];
}
let cylinder = (u,v) => {
let theta = 2 * Math.PI * u;
let x = Math.cos(theta)
y = Math.sin(theta)
z = v;
return [ x,y,z, x,y,z, u,v ];
}
let circle = (u,v) => {
let theta = 2 * Math.PI * u,
r = v;
let x = r * Math.cos(theta)
y = r * Math.sin(theta)
z = 0;
return [ x,y,z, x,y,z, u,v ];
}
let r0 = 1, r1 = .4;
let torus = (u,v) => {
let theta = 2 * Math.PI * u, ct = Math.cos(theta), st = Math.sin(theta);
let phi = 2 * Math.PI * v, cp = Math.cos(phi ), sp = Math.sin(phi );
return [ ct * (r0 + r1 * cp), st * (r0 + r1 * cp), r1 * sp,
ct * cp, st * cp, sp, u,v ];
}
let createTriMesh = (xyzFunc, nCols, nRows) => {
let triMesh = [];
for (let row = 0 ; row < nRows ; row++) {
let v0 = row / nRows;
let v1 = (row+1) / nRows;
for (let col = 0 ; col <= nCols ; col++) {
let u = col / nCols;
if (row % 2)
u = 1 - u;
let p0 = xyzFunc(u, v0),
p1 = xyzFunc(u, v1);
for (let n = 0 ; n < p0.length ; n++)
triMesh.push(p0[n]);
for (let n = 0 ; n < p1.length ; n++)
triMesh.push(p1[n]);
}
}
return triMesh;
}
stride = 8;
let torus32x32 = createTriMesh(torus, 32, 32);
let sphere16x8 = createTriMesh(sphere, 16, 8);
let sphere32x16 = createTriMesh(sphere, 32, 16);
let halfsphere16x8 = createTriMesh(halfsphere, 16, 8);
let cylinder16x8 = createTriMesh(cylinder, 16, 8);
let circle16x8 = createTriMesh(circle, 16, 8);
//------------------------ ANIMATION --------------------------
// YOU MIGHT WANT TO MOVE THESE SUPPORT FUNCTIONS INTO THE LIBRARY,
// SO YOU CAN USE THEM LATER IN OTHER THINGS YOU CREATE.
let m = new Mat4(); // DEFINE A NEW 4x4 MATRIX OBJECT.
let plastic = (r,g,b,p,s) => {
if (p === undefined) p = 10;
if (s === undefined) s = 1;
return [.2*r,.2*g,.2*b,0, r,g,b,0, s,s,s,p, 0,0,0,0];
}
let metal = (r,g,b,p,s) => {
if (p === undefined) p = 10;
if (s === undefined) s = 1;
return [.2*r,.2*g,.2*b,0, r,g,b,0, s*r,s*g,s*b,p, 0,0,0,0];
}
let normalize = v => {
let s = Math.sqrt(v[0] * v[0] + v[1] * v[1] + v[2] * v[2]);
return [v[0] / s, v[1] / s, v[2] / s];
}
let lights = [];
let clearLights = () => lights = [];
let addLight = (dir,color) => {
dir = normalize(dir);
let newLight = [dir[0],dir[1],dir[2], color[0],color[1],color[2], 0,0,0];
for (let n = 0 ; n < newLight.length ; n++)
lights.push(newLight[n]);
}
// NAIVE ALGORITHM FOR EVALUATING BEZIER CURVES.
// THIS IS EASIER TO UNDERSTAND, BUT CANNOT BE OPTIMIZED.
let mix = (a,b,t) => a + t * (b - a);
let evalBezier1 = (P, t) => {
let A = mix(P[0], P[1], t);
let B = mix(P[1], P[2], t);
let C = mix(P[2], P[3], t);
return mix ( mix(A,B,t), mix(B,C,t), t );
}
// BETTER ALGORITHM FOR EVALUATING BEZIER CURVES.
// THIS CAN BE OPTIMIZED TO RUN VERY EFFICIENTLY,
// IF C = mxv(bezierMatrix, P) IS DONE BEFOREHAND.
let bezierMatrix = [ -1,3,-3,1, 3,-6,3,0, -3,3,0,0, 1,0,0,0 ];
let mxv = (m, v) => {
let dst = [];
for (let i = 0 ; i < 4 ; i++) {
dst[i] = 0;
for (let j = 0 ; j < 4 ; j++)
dst[i] += m[i + 4*j] * v[j];
}
return dst;
}
let evalBezier = (P, t) => {
let C = mxv(bezierMatrix, P);
/*
return t*t*t * C[0] + t*t * C[1] + t * C[2] + C[3];
*/
return C[3] + t * (C[2] + t * (C[1] + t * C[0]));
}
let evalBezierSpline = (S, t) => {
let T = (t % 1) * S.length;
let i = Math.floor(T);
return evalBezier(S[i], T - i);
}
let evalFrame = (S, t) => {
let T = (t % 1) * S.length;
let i = Math.floor(T);
return S[i];
}
let isFirstTime = true;
function animate(gl) {
let time = (Date.now() - startTime) / 1000;
setUniform('3fv', 'uMouse', canvas1.mouseInfo);
setUniform('1f', 'uTime', time);
if (isFirstTime) {
isFirstTime = false;
setUniform('1f', 'uFL', 3.5);
// SPECIFY BACKGROUND COLOR AND LIGHT SOURCES
bgColor = [.7,.6,.5];
clearLights();
addLight([1,1,1], bgColor);
addLight([-1,-1,-1], [.25,.1,.05]);
setUniform('Matrix3fv', 'uL', false, lights);
let textureImageFiles = ['porygonz_face.png', 'porygonz_body.png'];//
let images = [];
let samplers = [];
for (let n = 0 ; n < textureImageFiles.length ; n++) {
images[n] = new Image();
samplers.push(n);
images[n].onload = () => {
try {
gl.activeTexture (gl.TEXTURE0 + n);
gl.bindTexture (gl.TEXTURE_2D, gl.createTexture());
gl.pixelStorei (gl.UNPACK_FLIP_Y_WEBGL, true);
gl.texImage2D (gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, images[n]);
gl.generateMipmap(gl.TEXTURE_2D);
}
catch(e) { console.log(e); }
}
images[n].src = textureImageFiles[n];
}
setUniform('1iv', 'uSampler', samplers);
}
// CLEAR EVERYTHING TO THE BACKGROUND COLOR
gl.clearColor(bgColor[0],bgColor[1],bgColor[2],1);
// ANIMATE AND DRAW ALL THE OBJECTS IN THE SCENE
let t = time / 21 % 1;
let pi = Math.PI;
let s = Math.sin(5*time); let c = Math.cos(5*time);
let spo = Math.sin(3*time - 1.); let spc = Math.sin(3*time + 1.);
// Texture Choosers
textureFace = [1.,0.,0.];
textureBody = [0.,1.,0.];
textureNone = [0.,0.,1.];
//--------//
// JOINTS //
//--------//
function joint(m){ m.save();
m.scale(.05,.05,.05);
drawMesh(m, sphere16x8, plastic(.0,.0,.0), textureNone);
m.restore(); }
//----------------//
// ABOVE THE NECK //
//----------------//
function above_neck(m, rotX, rotY, rotZ){ m.save();
m.rotateZ(rotX); m.rotateX(rotY); m.rotateY(1.0+rotZ);
head(m);
nose(m);
head_spike(m);
m.restore(); }
function head(m){
m.translate(-0.08,.16,.0);
m.scale(.25,.18,.18);
m.rotateX(Math.PI/2.);
drawMesh(m, sphere16x8, plastic(.6,.4,.4), textureFace);
m.rotateX(-Math.PI/2.);}
function nose(m){ m.save();
m.translate(-1.,.0,.0);
m.scale(.8,.2,.45);
drawMesh(m, sphere16x8, plastic(.0,.6,1.), textureNone);
m.restore(); }
function head_spike(m){ m.save(); // REPLACE WITH HEAD DEFORMATION INTO SPIKE
m.translate(.0,.6,.0);
m.scale(.15,1.5,.15);
drawMesh(m, sphere16x8, plastic(.8,.1,.1), textureNone);
m.restore(); }
//----------------//
// BELOW THE NECK //
//----------------//
function below_neck(m,TORSOrx,TORSOry,TORSOrz,SHOULDERrx,SHOULDERry,SHOULDERrz,TAILrx){ m.save();
m.translate(.0,-.27,.0);
torso(m,TORSOrx,TORSOry,TORSOrz,TAILrx);
m.save(); // RIGHT APPENDAGE
//m.rotateX(appendage);
m.translate(.145,.15,.0);
m.rotateX(SHOULDERrx); m.rotateY(SHOULDERry); m.rotateZ(SHOULDERrz);
//joint(m); // right shoulder
m.translate(.19,.0,.0);
arm(m);
m.restore();
m.save(); // LEFT APPENDAGE
//m.rotateX(appendage);
m.translate(-.145,.15,.0);
m.rotateX(-SHOULDERrx); m.rotateY(-SHOULDERry); m.rotateZ(-SHOULDERrz);
//joint(m); // left shoulder
m.translate(-.19,.0,.0);
arm(m);
m.restore();
m.restore(); }
function torso(m,rotx,roty,rotz,TAILrx){ m.save();
m.rotateX(Math.PI/2 + .7 + rotx); m.rotateY(roty);
tail(m, TAILrx);
m.rotateZ(rotz);
m.scale(.18,.18,.25);//m.scale(.18,.25,.18);
drawMesh(m, sphere16x8, plastic(.6,.4,.4), textureBody);
m.restore(); }
function arm(m){ m.save(); // DEFORM
m.scale(.2,.07,.07);
drawMesh(m, sphere16x8, plastic(.0,.6,1.), textureNone);
m.restore(); }
function tail(m, rotx){ m.save(); // DEFORM
m.translate(.0,.0,.25);
m.rotateX(-1.5+rotx); // tilt tail forwards;
//joint(m); // tail joint
m.translate(.0,-.2,.0);
m.scale(.07,.2,.07);
drawMesh(m, sphere16x8, plastic(.0,.6,1.), textureNone);
m.restore(); }
//-----------//
// POKE BALL //
//-----------//
function pokeball(m,size,action){ m.save();
m.rotateY(time);
m.translate(.0,-2*(.4-size),.0);
m.scale(size,size,size);
m.save(); // OUTSIDE TOP HALF, RED
m.translate(.0,.05,.0);
m.translate(.0,-.05,-1.);
m.rotateX(action);
m.translate(.0,.05,1.);
drawMesh(m,halfsphere16x8,plastic(1.,0.,0.), textureNone);
m.restore();
m.save(); // OUTSIDE BOTTOM HALF, WHITE
m.rotateZ(Math.PI);
m.translate(.0,.05,.0);
drawMesh(m,halfsphere16x8,plastic(1.,1.,1.), textureNone);
m.restore();
m.scale(.95,.95,.95);
m.save(); // OUTSIDE TOP HALF, RED
m.translate(.0,.0,-1.);
m.rotateX(action);
m.translate(.0,.0,1.);
drawMesh(m,halfsphere16x8,plastic(0.,0.,0.), textureNone);
m.restore();
m.save(); // INSIDE BOTTOM HALF, BLACK
m.rotateZ(Math.PI);
drawMesh(m,halfsphere16x8,plastic(0.,0.,0.), textureNone);
m.restore();
m.translate(.0,.0,0.9);
m.scale(.3,.3,1.);
m.save(); // BLACK BUTTON CYLINDER
m.scale(1.,1.,.2);
drawMesh(m,cylinder16x8,plastic(0.,0.,0.), textureNone);
m.restore();
m.save(); // BLACK BUTTON CIRCLE
m.translate(.0,.0,.2);
drawMesh(m,circle16x8,plastic(0.,0.,0.), textureNone);
m.restore();
m.scale(.7,.7,1.);
m.save(); // WHITE BUTTON CYLINDER
m.scale(1.,1.,.23);
drawMesh(m,cylinder16x8,plastic(1.,1.,1.), textureNone);
m.restore();
m.save(); // WHITE BUTTON CIRCLE
m.translate(.0,.0,.23);
drawMesh(m,circle16x8,plastic(1.,1.,1.), textureNone);
m.restore();
m.restore() }
//-----------//
// MAIN CALL // 21 FRAMES
//-----------//
m.identity();
//-- POKEBALL --//
let bi = [.4,.4,.4,.4], // big
sm = [.05,.05,.05,.05], // small
shr = [.4, .2, .075, .05], // shrink
gro = [.05, .075, .2, .4]; // grow
let moveframes = [bi,bi,bi,bi,bi, shr, sm,sm,sm,sm,sm,sm, sm,sm,sm,sm,sm,sm,sm,sm, gro];
let POKEBALLsize = evalBezierSpline(moveframes,t);
let cld = 0., // closed
op = -Math.PI / 2 * ( (1/2) * (1 + spo) ), // open action
opd = -Math.PI / 2, // opened
cl = -Math.PI / 2 * ( (1/2) * (1 + spc) ); // close action
let actionframes = [cld,cld,cld,cld,cld, cld, op,opd,opd,opd,opd,opd, opd,opd,opd,opd,opd,opd,opd,cl, cld];
let POKEBALLropen = evalFrame(actionframes,t);
pokeball(m, POKEBALLsize, POKEBALLropen);
//-- NECK --//
t = time / 4 % 1;
let updown = [0.0, 0.125, -0.125, 0.0];
let NECKmx = 0.0; // LEFT TO RIGHT
let NECKmy = evalBezierSpline([updown,updown], 2*t); // UP AND DOWN
let NECKmz = 0.0; // FORWARD AND BACKWARD
let NECKrx = 0.0;
let NECKry = time;
let NECKrz = 0.0;
m.rotateX(NECKrx); m.rotateY(NECKry); m.rotateZ(NECKrz);
//-- PORYGON-Z ACTION --//
t = time / 21 % 1;
sm = [.01,.01,.01,.01]; // small
bi = [1.,1.,1.,1.]; // big
gro = [.01, .3, .8, 1.]; // grow
shr = [1., .8, .3, .01]; // shrink
let necksizeframes = [sm,sm,sm,sm,sm, sm, sm,gro,bi,bi,bi,bi, bi,bi,bi,bi,bi,bi,shr,sm, sm];
let NECKsize = evalBezierSpline(necksizeframes,t);
m.translate(NECKmx,NECKmy + (-2*(.4-POKEBALLsize)) + (-1*(.01 - NECKsize)),NECKmz);
m.scale(NECKsize, NECKsize, NECKsize);
//joint(m); // NECK
//-- ABOVE & BELOW NECK --//
t = time / 4 % 1;
backfor = [-0.2, -0.5, 0.1, -0.2];
let HEADrx = evalBezierSpline([backfor, backfor], 2*t); // Bend Forward/Backward
let HEADry = 0.0; // Shimmy
let HEADrz = 0.0; // Bend Sideways
forback = [0.0, -0.4, 0.5, 0.0];
let TORSOrx = evalBezierSpline([forback, forback], 2*t);
let TORSOry = .0;
let TORSOrz = -Math.PI/2;
move = [0, -0.3, 0.3, 0];
let SHOULDERrx = 0.0;
let SHOULDERry = -0.4;
let SHOULDERrz = 0.4 + evalBezierSpline([move, move], 2*t);
forback = [0.0, -0.3, 0.1, 0.0]
let TAILrx = -1.1 + evalBezierSpline([forback, forback], 2*t);
above_neck(m,HEADrx,HEADry,HEADrz);
below_neck(m,TORSOrx,TORSOry,TORSOrz,SHOULDERrx,SHOULDERry,SHOULDERrz,TAILrx);
}
gl_start(canvas1, vs, fs);
</script>