CGxp1

From e1af5e214c389aea2b55daf82bdec92472db3f19 Mon Sep 17 00:00:00 2001 From: Chris Xiong Date: Sat, 9 Feb 2019 00:00:53 +0800 Subject: Moving shitty stuff sitting around in the www folder here. --- xp/cgxp/1.html | 14 +++ xp/cgxp/2.html | 14 +++ xp/cgxp/main1.js | 320 +++++++++++++++++++++++++++++++++++++++++++++++++++++ xp/cgxp/main2.js | 280 ++++++++++++++++++++++++++++++++++++++++++++++ xp/cgxp/wglmath.js | 102 +++++++++++++++++ 5 files changed, 730 insertions(+) create mode 100644 xp/cgxp/1.html create mode 100644 xp/cgxp/2.html create mode 100644 xp/cgxp/main1.js create mode 100644 xp/cgxp/main2.js create mode 100644 xp/cgxp/wglmath.js (limited to 'xp/cgxp') diff --git a/xp/cgxp/1.html b/xp/cgxp/1.html new file mode 100644 index 0000000..b05e78f --- /dev/null +++ b/xp/cgxp/1.html @@ -0,0 +1,14 @@ + + + + +CGxp1 + + + + + + +

+ + diff --git a/xp/cgxp/2.html b/xp/cgxp/2.html new file mode 100644 index 0000000..880c0cb --- /dev/null +++ b/xp/cgxp/2.html @@ -0,0 +1,14 @@ + + + + +CGxp2 + + + + + + +

+ + diff --git a/xp/cgxp/main1.js b/xp/cgxp/main1.js new file mode 100644 index 0000000..bd52e13 --- /dev/null +++ b/xp/cgxp/main1.js @@ -0,0 +1,320 @@ +//Copyright Chris Xiong 2018 +//License: Expat (MIT) +var cvs,WGL,vpw,vph,hdiv; +var fsh=` +varying lowp vec4 vC; +void main(void) +{ + gl_FragColor=vC; +}`; +var vsh=` +attribute vec3 vp; +attribute vec4 vc; +uniform mat4 mmodelview; +uniform mat4 mprojection; +varying lowp vec4 vC; +void main(void) +{ + gl_Position=mprojection*mmodelview*vec4(vp,1.); + vC=vc; +}`; +var shp; +var vbufsize=4096; +var vbo,ibo; +var vb=new Float32Array(vbufsize*7); +var ib=new Uint16Array(vbufsize*6/4); +var Mprojection,Mmodelview; +var primc; +var kst=[]; +var dbc,mbtn,mup,mdn,mx,my,mox,moy; +var shapes=[]; +var curshape=null; +var dragging=false,drg; + +var Shape=function(t) +{ + this.type=t; + this.vert=[]; +} +function copyshape(s) +{ + var r=new Shape(s.type); + for(var i=0;iab.l())pp=new v3d(1e9,1e9,1e9); + return Math.min(p.subtract(pp).l(),p.subtract(a).l(),p.subtract(b).l()); + } + if(this.type=='segment') + { + var d=dp2s(x,y,this.vert[0].x,this.vert[0].y, + this.vert[1].x,this.vert[1].y); + if(d<5)return true; + } + if(this.type=='segstrip'||this.type=="segloop") + { + for(var i=0;i=vbufsize/4)batchGL(); + for(var i=0;i<4;++i) + for(var j=0;j<7;++j)vb[primc*7*4+i*7+j]=a[i*7+j]; + ++primc; +} + +function init() +{ + cvs=document.getElementById("glCvs"); + if(!window.devicePixelRatio)window.devicePixelRatio=1; + cvs.width=window.innerWidth; + cvs.height=window.innerHeight; + cvs.style.width=cvs.width+"px"; + cvs.style.height=cvs.height+"px"; + cvs.width=cvs.width*window.devicePixelRatio; + cvs.height=cvs.height*window.devicePixelRatio; + vpw=cvs.width;vph=cvs.height; + try + {WGL=cvs.getContext("webgl")||cvs.getContext("experimental-webgl");} + catch(e){WGL=null;} + if(!WGL){alert("WebGL is not supported by your browser...");return;} + + WGL.clearColor(0.5,0.5,0.5,1.0); + WGL.clearDepth(1); + WGL.enable(WGL.DEPTH_TEST); + WGL.depthFunc(WGL.LESS); + WGL.enable(WGL.BLEND); + WGL.blendFunc(WGL.SRC_ALPHA,WGL.ONE_MINUS_SRC_ALPHA); + WGL.clear(WGL.COLOR_BUFFER_BIT|WGL.DEPTH_BUFFER_BIT); + WGL.viewport(0,0,cvs.width,cvs.height); + + shp=WGL.createProgram(); + var fshs=createShader(fsh,WGL.FRAGMENT_SHADER); + var vshs=createShader(vsh,WGL.VERTEX_SHADER); + WGL.attachShader(shp,vshs);WGL.attachShader(shp,fshs); + WGL.linkProgram(shp); + if(!WGL.getProgramParameter(shp,WGL.LINK_STATUS)) + { + alert("shader link error..."); + } + WGL.useProgram(shp); + + vbo=WGL.createBuffer(); + WGL.bindBuffer(WGL.ARRAY_BUFFER,vbo); + WGL.bufferData(WGL.ARRAY_BUFFER,vb,WGL.STATIC_DRAW); + var vpp=WGL.getAttribLocation(shp,"vp"); + var vcp=WGL.getAttribLocation(shp,"vc"); + WGL.enableVertexAttribArray(vpp); + WGL.enableVertexAttribArray(vcp); + WGL.bindBuffer(WGL.ARRAY_BUFFER,vbo); + WGL.vertexAttribPointer(vpp,3,WGL.FLOAT,false,7*4,0); + WGL.vertexAttribPointer(vcp,4,WGL.FLOAT,false,7*4,3*4); + + for(var i=0,n=0,p=0;i0&&state===0) + { + ++this.timer;health+=0.01; + this.r+=0.02;if(health>1)health=1; + } + if(this.timer>25)this.timer=-1; +} +Sphere.prototype.draw=function(x,y,a) +{ + if(this.timer!==-1)pushSphere(x,y,0,this.r,[0,1,0,a*(0.6-this.timer*0.6/25)]); +} + +function createShader(sh,t) +{ + var shader=WGL.createShader(t); + WGL.shaderSource(shader,sh); + WGL.compileShader(shader); + if(!WGL.getShaderParameter(shader,WGL.COMPILE_STATUS)) + { + alert("shader error..."+WGL.getShaderInfoLog(shader)); + return null; + } + return shader; +} +function pushQuad(a) +{ + if(primc>=vbufsize/4)batchGL(); + for(var i=0;i<4;++i) + for(var j=0;j<7;++j)vb[primc*7*4+i*7+j]=a[i*7+j]; + ++primc; +} +function cube(x,y,z,l,r,g,b,a) +{ + var L=x-l/2,R=x+l/2; + var B=y-l/2,T=y+l/2; + var N=z-l/2,F=z+l/2; + pushQuad([ + L,B,N,r,g,b,a, + L,T,N,r,g,b,a, + R,T,N,r,g,b,a, + R,B,N,r,g,b,a + ]); + pushQuad([ + L,B,F,r,g,b,a, + L,T,F,r,g,b,a, + R,T,F,r,g,b,a, + R,B,F,r,g,b,a + ]); + pushQuad([ + L,B,N,r,g,b,a, + L,T,N,r,g,b,a, + L,T,F,r,g,b,a, + L,B,F,r,g,b,a + ]); + pushQuad([ + R,B,N,r,g,b,a, + R,T,N,r,g,b,a, + R,T,F,r,g,b,a, + R,B,F,r,g,b,a + ]); + pushQuad([ + L,B,N,r,g,b,a, + R,B,N,r,g,b,a, + R,B,F,r,g,b,a, + L,B,F,r,g,b,a + ]); + pushQuad([ + L,T,N,r,g,b,a, + R,T,N,r,g,b,a, + R,T,F,r,g,b,a, + L,T,F,r,g,b,a + ]); +} +function pushSphere(x,y,z,r,col) +{ + for(var i=0;i<12;++i) + for(var j=0;j<12;++j) + { + var r1=r*Math.sin(i*Math.PI/12); + var a=new v3d(x+r1*Math.cos(j*Math.PI/12*2),y+r1*Math.sin(j*Math.PI/12*2),z+r*Math.cos(i*Math.PI/12)); + var b=new v3d(x+r1*Math.cos((j+1)*Math.PI/12*2),y+r1*Math.sin((j+1)*Math.PI/12*2),z+r*Math.cos(i*Math.PI/12)); + r1=r*Math.sin((i+1)*Math.PI/12); + var c=new v3d(x+r1*Math.cos(j*Math.PI/12*2),y+r1*Math.sin(j*Math.PI/12*2),z+r*Math.cos((i+1)*Math.PI/12)); + var d=new v3d(x+r1*Math.cos((j+1)*Math.PI/12*2),y+r1*Math.sin((j+1)*Math.PI/12*2),z+r*Math.cos((i+1)*Math.PI/12)); + pushQuad([ + a.x,a.y,a.z,col[0],col[1],col[2],col[3], + b.x,b.y,b.z,col[0],col[1],col[2],col[3], + d.x,d.y,d.z,col[0],col[1],col[2],col[3], + c.x,c.y,c.z,col[0],col[1],col[2],col[3] + ]); + } +} +function randint(c) +{return Math.floor(Math.random()*c);} +function genmaze() +{ + for(var i=0;i=0&&cy>=0&&cx=0&&maz[ppx-1][ppy])--ppx;} + if(e.code=='KeyW'){if(ppy+1=0&&maz[ppx][ppy-1])--ppy;} + }); + genmaze(); + requestAnimationFrame(mainloop); +} + +function mainloop() +{ + const ofx=-9,ofy=-11; + WGL.clearColor(0.5,0.5,0.5,1.0); + WGL.clearDepth(1); + WGL.clear(WGL.COLOR_BUFFER_BIT|WGL.DEPTH_BUFFER_BIT); + primc=0; + Mmodelview=buildIdentityMatrix(); + + Mmodelview=buildLookAtMatrix(pos,[15,10,0],[0,0,1]); + for(var i=0;i