/// <summary>
/// This is a javascript application.
/// </summary>
/// <param name="page">HTML document rendered by the web server which can now be enhanced.</param>
public Application(IDefault page = null)
{
var gl_viewportWidth = 500;
var gl_viewportHeight = 500;
var gl = new WebGLRenderingContext();
#region canvas
var canvas = gl.canvas.AttachToDocument();
Native.document.body.style.overflow = IStyle.OverflowEnum.hidden;
canvas.style.SetLocation(0, 0, gl_viewportWidth, gl_viewportHeight);
canvas.width = gl_viewportWidth;
canvas.height = gl_viewportHeight;
#endregion
var h = 1f;
var r1 = .5f;
var r2 = .2f;
var nPhi = 500;
var prog = gl.createProgram();
#region createShader
Func<ScriptCoreLib.GLSL.Shader, WebGLShader> createShader = (src) =>
{
var shader = gl.createShader(src);
// verify
if (gl.getShaderParameter(shader, gl.COMPILE_STATUS) == null)
{
Native.window.alert("error in SHADER:\n" + gl.getShaderInfoLog(shader));
throw new InvalidOperationException("shader failed");
}
return shader;
};
#endregion
var vs = createShader(new GeometryVertexShader());
var fs = createShader(new GeometryFragmentShader());
gl.attachShader(prog, vs);
gl.attachShader(prog, fs);
gl.linkProgram(prog);
gl.useProgram(prog);
var pt = new IArray<float>();
var nt = new IArray<float>();
var Phi = 0.0;
var dPhi = 2 * Math.PI / (nPhi - 1);
var Nx = r1 - r2;
var Ny = h;
var N = (float)Math.Sqrt(Nx * Nx + Ny * Ny);
Nx /= N;
Ny /= N;
for (var i = 0; i < nPhi; i++)
{
var cosPhi = Math.Cos(Phi);
var sinPhi = Math.Sin(Phi);
var cosPhi2 = Math.Cos(Phi + dPhi / 2);
var sinPhi2 = Math.Sin(Phi + dPhi / 2);
pt.push(-h / 2);
pt.push((float)(cosPhi * r1));
pt.push((float)(sinPhi * r1)); // points
nt.push(Nx);
nt.push((float)(Ny * cosPhi));
nt.push((float)(Ny * sinPhi)); // normals
pt.push(h / 2);
pt.push((float)(cosPhi2 * r2));
pt.push((float)(sinPhi2 * r2)); // points
nt.push(Nx);
nt.push((float)(Ny * cosPhi2));
nt.push((float)(Ny * sinPhi2)); // normals
Phi += dPhi;
}
var posLoc = gl.getAttribLocation(prog, "aPos");
gl.enableVertexAttribArray((uint)posLoc);
gl.bindBuffer(gl.ARRAY_BUFFER, gl.createBuffer());
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(pt.ToArray()), gl.STATIC_DRAW);
gl.vertexAttribPointer((uint)posLoc, 3, gl.FLOAT, false, 0, 0);
var normLoc = gl.getAttribLocation(prog, "aNorm");
gl.enableVertexAttribArray((uint)normLoc);
gl.bindBuffer(gl.ARRAY_BUFFER, gl.createBuffer());
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(nt), gl.STATIC_DRAW);
gl.vertexAttribPointer((uint)normLoc, 3, gl.FLOAT, false, 0, 0);
var prMatrix = new CanvasMatrix4();
gl.uniformMatrix4fv(gl.getUniformLocation(prog, "prMatrix"),
false, new Float32Array(prMatrix.getAsArray()));
var mvMatrix = new CanvasMatrix4();
var rotMat = new CanvasMatrix4();
rotMat.makeIdentity();
rotMat.rotate(-40, 0, 1, 0);
var mvMatLoc = gl.getUniformLocation(prog, "mvMatrix");
gl.enable(gl.DEPTH_TEST);
gl.depthFunc(gl.LEQUAL);
gl.clearDepth(1.0f);
gl.clearColor(0, 0, .5f, 1);
var xOffs = 0;
var yOffs = 0;
var drag = 0;
var xRot = 0;
var yRot = 0;
var transl = -1.5f;
Action drawScene = delegate
{
gl.uniformMatrix4fv(gl.getUniformLocation(prog, "prMatrix"),
false, new Float32Array(prMatrix.getAsArray()));
gl.viewport(0, 0, gl_viewportWidth, gl_viewportHeight);
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
rotMat.rotate(xRot / 5, 1, 0, 0);
rotMat.rotate(yRot / 5, 0, 1, 0);
yRot = 0;
xRot = 0;
mvMatrix.load(rotMat);
mvMatrix.translate(0, 0, transl);
gl.uniformMatrix4fv(mvMatLoc, false,
new Float32Array(mvMatrix.getAsArray()));
gl.drawArrays(gl.TRIANGLE_STRIP, 0, 2 * nPhi);
gl.flush();
};
#region IsDisposed
var IsDisposed = false;
this.Dispose = delegate
{
if (IsDisposed)
return;
IsDisposed = true;
canvas.Orphanize();
};
#endregion
#region requestFullscreen
Native.Document.body.ondblclick +=
delegate
{
if (IsDisposed)
return;
// http://tutorialzine.com/2012/02/enhance-your-website-fullscreen-api/
Native.Document.body.requestFullscreen();
};
#endregion
var c = 0;
Native.window.onframe += delegate
{
if (IsDisposed)
return;
c++;
xRot += 2;
yRot += 3;
Native.document.title = "" + c;
drawScene();
//animate();
};
#region AtResize
Action AtResize =
delegate
{
gl_viewportWidth = Native.window.Width;
gl_viewportHeight = Native.window.Height;
prMatrix = new CanvasMatrix4();
prMatrix.perspective(45f, (f)gl_viewportWidth / (f)gl_viewportHeight, 1f, 100f);
canvas.style.SetLocation(0, 0, gl_viewportWidth, gl_viewportHeight);
canvas.width = gl_viewportWidth;
canvas.height = gl_viewportHeight;
};
Native.window.onresize +=
e =>
{
AtResize();
};
AtResize();
#endregion
}
/// <summary>
/// This is a javascript application.
/// </summary>
/// <param name="page">HTML document rendered by the web server which can now be enhanced.</param>
public Application(IDefault page = null)
{
var gl_viewportWidth = Native.window.Width;
var gl_viewportHeight = Native.window.Height;
var gl = new WebGLRenderingContext();
var canvas = gl.canvas.AttachToDocument();
Native.document.body.style.overflow = IStyle.OverflowEnum.hidden;
canvas.style.SetLocation(0, 0, gl_viewportWidth, gl_viewportWidth);
gl.viewport(0, 0, gl_viewportWidth, gl_viewportWidth);
var prog = gl.createProgram(
new CubicVertexShader(),
new CubicFragmentShader()
);
var posLoc = 0U;
gl.bindAttribLocation(prog, posLoc, "aPos");
var normLoc = 1U;
gl.bindAttribLocation(prog, normLoc, "aNorm");
gl.linkProgram(prog);
gl.useProgram(prog);
#region data
var a = 1.0f; // where is it used? what shall be the type?
var pt0 = new float[] {-a,-a,a, a,-a,a, -a,a,a, a,a,a, // cubic
-a,a,a, a,a,a, -a,a,-a, a,a,-a,
-a,a,-a, a,a,-a, -a,-a,-a, a,-a,-a, -a,-a,-a, a,-a,-a, -a,-a,a, a,-a,a,
a,a,a, a,a,-a, a,-a,a, a,-a,-a, -a,a,a, -a,a,-a, -a,-a,a, -a,-a,-a};
var nt = new float[] {0,0,1, 0,0,1, 0,0,1, 0,0,1, 0,1,0, 0,1,0, 0,1,0, 0,1,0,
0,0,-1, 0,0,-1, 0,0,-1, 0,0,-1, 0,-1,0, 0,-1,0, 0,-1,0, 0,-1,0,
1,0,0, 1,0,0, 1,0,0, 1,0,0, -1,0,0, -1,0,0, -1,0,0, -1,0,0};
var ind = new ushort[] {0,1,2,1,2,3, 4,5,6,5,6,7, 8,9,10,9,10,11,
12,13,14,13,14,15, 16,17,18,17,18,19, 20,21,22,21,22,23};
var nPhi = 25;
var nTheta = 12;
var r = .15;
var dPhi = 2.0 * Math.PI / nPhi;
var dTheta = Math.PI / nTheta;
for (var j = 0; j <= nTheta; j++)
{
var Theta = j * dTheta;
var cosTheta = Math.Cos(Theta);
var sinTheta = Math.Sin(Theta);
for (var i = 0; i <= nPhi; i++)
{
var Phi = i * dPhi;
var cosPhi = Math.Cos(Phi);
var sinPhi = Math.Sin(Phi);
((IArray<float>)(object)pt0).push((float)(r * cosPhi * sinTheta));
((IArray<float>)(object)pt0).push((float)(-r * sinPhi * sinTheta));
((IArray<float>)(object)pt0).push((float)(r * cosTheta));
((IArray<float>)(object)nt).push((float)(cosPhi * sinTheta));
((IArray<float>)(object)nt).push((float)(-sinPhi * sinTheta));
((IArray<float>)(object)nt).push((float)(cosTheta));
}
}
var n1 = nPhi + 1;
var off = 24;
for (var i = 0; i < nTheta; i++)
for (var j = 0; j < nPhi; j++)
{
((IArray<int>)(object)ind).push(i * n1 + j + off);
((IArray<int>)(object)ind).push((i + 1) * n1 + j + 1 + off);
((IArray<int>)(object)ind).push(i * n1 + j + 1 + off);
((IArray<int>)(object)ind).push(i * n1 + j + off);
((IArray<int>)(object)ind).push((i + 1) * n1 + j + off);
((IArray<int>)(object)ind).push((i + 1) * n1 + j + 1 + off);
}
#endregion
gl.enableVertexAttribArray(posLoc);
gl.bindBuffer(gl.ARRAY_BUFFER, gl.createBuffer());
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(pt0), gl.STATIC_DRAW);
gl.vertexAttribPointer(posLoc, 3, gl.FLOAT, false, 0, 0);
gl.enableVertexAttribArray(normLoc);
gl.bindBuffer(gl.ARRAY_BUFFER, gl.createBuffer());
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(nt), gl.STATIC_DRAW);
gl.vertexAttribPointer(normLoc, 3, gl.FLOAT, false, 0, 0);
gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, gl.createBuffer());
gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, new Uint16Array(ind),
gl.STATIC_DRAW);
var prMatrix = new CanvasMatrix4();
prMatrix.perspective(45f, 1f, .1f, 100f);
gl.uniformMatrix4fv(gl.getUniformLocation(prog, "prMatrix"),
false, new Float32Array(prMatrix.getAsArray()));
var mvMatrix = new CanvasMatrix4();
var rotMat = new CanvasMatrix4();
rotMat.makeIdentity();
rotMat.rotate(25, 1, 1, 0);
var mvMatLoc = gl.getUniformLocation(prog, "mvMatrix");
var colorLoc = gl.getUniformLocation(prog, "u_color");
var line_prog = gl.createProgram(
new LineVertexShader(),
new LineFragmentShader()
);
var lineLoc = 2U;
gl.bindAttribLocation(line_prog, lineLoc, "aPos");
gl.linkProgram(line_prog);
gl.useProgram(line_prog);
gl.uniformMatrix4fv(gl.getUniformLocation(line_prog, "prMatrix"),
false, new Float32Array(prMatrix.getAsArray()));
var mvMatLineLoc = gl.getUniformLocation(line_prog, "mvMatrix");
var pt1 = new float[]{2,1,1, -2,1,1, 2,-1,1, -2,-1,1, 2,1,-1, -2,1,-1, 2,-1,-1, -2,-1,-1,
1,2,1, 1,-2,1, 1,2,-1, 1,-2,-1, -1,2,1, -1,-2,1, -1,2,-1, -1,-2,-1,
1,1,2, 1,1,-2, -1,1,2, -1,1,-2, 1,-1,2, 1,-1,-2, -1,-1,2, -1,-1,-2
};
gl.enableVertexAttribArray(lineLoc);
gl.bindBuffer(gl.ARRAY_BUFFER, gl.createBuffer());
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(pt1), gl.STATIC_DRAW);
gl.vertexAttribPointer(lineLoc, 3, gl.FLOAT, false, 0, 0);
gl.enable(gl.DEPTH_TEST);
gl.depthFunc(gl.LEQUAL);
gl.clearDepth(1.0f);
gl.clearColor(.5f, 1f, .5f, 1f);
gl.lineWidth(2);
var xOffs = 0;
var yOffs = 0;
var drag = 0;
var xRot = 0f;
var yRot = 0f;
var transl = -6.0f;
#region drawBall
Action<f, f, f> drawBall = (x, y, z) =>
{
mvMatrix.makeIdentity();
mvMatrix.translate(x, y, z);
mvMatrix.multRight(rotMat);
mvMatrix.translate(0, 0, transl);
gl.uniformMatrix4fv(mvMatLoc, false,
new Float32Array(mvMatrix.getAsArray()));
gl.drawElements(gl.TRIANGLES, 6 * nPhi * nTheta, gl.UNSIGNED_SHORT, 72);
};
#endregion
#region drawScene
Action drawScene = delegate
{
gl.viewport(0, 0, gl_viewportWidth, gl_viewportWidth);
gl.useProgram(prog);
gl.uniformMatrix4fv(gl.getUniformLocation(prog, "prMatrix"),
false, new Float32Array(prMatrix.getAsArray()));
rotMat.rotate(xRot / 5, 1, 0, 0);
rotMat.rotate(yRot / 5, 0, 1, 0);
yRot = 0;
xRot = 0;
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
gl.uniform4f(colorLoc, 1, 1, 0, 1);
drawBall(1, 1, 1); drawBall(-1, 1, 1); drawBall(1, -1, 1);
drawBall(1, 1, -1); drawBall(-1, -1, 1); drawBall(-1, 1, -1);
drawBall(1, -1, -1); drawBall(-1, -1, -1);
mvMatrix.load(rotMat);
mvMatrix.translate(0, 0, transl);
gl.uniformMatrix4fv(mvMatLoc, false,
new Float32Array(mvMatrix.getAsArray()));
gl.enable(gl.BLEND);
gl.blendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA);
gl.uniform4f(colorLoc, .0f, .0f, .9f, .7f);
gl.depthMask(false);
gl.drawElements(gl.TRIANGLES, 36, gl.UNSIGNED_SHORT, 0);
gl.depthMask(true);
gl.disable(gl.BLEND);
gl.useProgram(line_prog);
gl.uniformMatrix4fv(gl.getUniformLocation(line_prog, "prMatrix"),
false, new Float32Array(prMatrix.getAsArray()));
gl.uniformMatrix4fv(mvMatLineLoc, false,
new Float32Array(mvMatrix.getAsArray()));
gl.drawArrays(gl.LINES, 0, 24);
gl.flush();
};
#endregion
drawScene();
#region AtResize
Action AtResize = delegate
{
gl_viewportWidth = Native.window.Width;
gl_viewportHeight = Native.window.Height;
prMatrix = new CanvasMatrix4();
//var aspect = (f)gl_viewportWidth / (f)gl_viewportHeight;
var aspect = Native.window.aspect;
Console.WriteLine(
new { gl_viewportWidth, gl_viewportHeight, aspect }
);
//Native.document.title = new { aspect }.ToString();
prMatrix.perspective(45f, (f)aspect, 1f, 100f);
canvas.style.SetLocation(0, 0, gl_viewportWidth, gl_viewportHeight);
canvas.width = gl_viewportWidth;
canvas.height = gl_viewportHeight;
drawScene();
};
AtResize();
Native.window.onresize += delegate
{
AtResize();
};
#endregion
#region mouse
canvas.onmousedown += ev =>
{
ev.PreventDefault();
drag = 1;
xOffs = ev.CursorX;
yOffs = ev.CursorY;
canvas.requestPointerLock();
};
canvas.onmouseup += ev =>
{
ev.PreventDefault();
drag = 0;
xOffs = ev.CursorX;
yOffs = ev.CursorY;
Native.Document.exitPointerLock();
};
canvas.onmousemove += ev =>
{
if (drag == 0)
return;
if (Native.Document.pointerLockElement == canvas)
{
xRot += ev.movementY;
yRot += ev.movementX;
drawScene();
return;
}
ev.PreventDefault();
if (ev.shiftKey)
{
transl *= 1 + (ev.CursorY - yOffs) / 1000;
yRot = -xOffs + ev.CursorX;
}
else
{
yRot = -xOffs + ev.CursorX;
xRot = -yOffs + ev.CursorY;
}
xOffs = ev.CursorX;
yOffs = ev.CursorY;
drawScene();
};
#endregion
#region onmousewheel
canvas.onmousewheel +=
ev =>
{
var del = 1.1f;
if (ev.shiftKey)
del = 1.01f;
if (ev.WheelDirection > 0)
transl *= del;
else
transl *= (1 / del);
drawScene();
ev.PreventDefault();
};
#endregion
#region IsDisposed
var IsDisposed = false;
this.Dispose = delegate
{
if (IsDisposed)
return;
IsDisposed = true;
canvas.Orphanize();
};
#endregion
#region requestFullscreen
Native.Document.body.ondblclick +=
delegate
{
if (IsDisposed)
return;
// http://tutorialzine.com/2012/02/enhance-your-website-fullscreen-api/
canvas.requestFullscreen();
};
#endregion
#region tick
Native.window.onframe += delegate
{
if (IsDisposed)
return;
if (drag == 0)
{
xRot += 2;
yRot += 3;
}
drawScene();
//animate();
};
#endregion
//Native.Document.body.style.backgroundColor = Color.FromRGB(0x80, 0xFF, 0x80);
}
/// <summary>
/// This is a javascript application.
/// </summary>
/// <param name="page">HTML document rendered by the web server which can now be enhanced.</param>
public Application(IDefault page = null)
{
var gl_viewportWidth = 500;
var gl_viewportHeight = 500;
var gl = new WebGLRenderingContext();
#region canvas
var canvas = gl.canvas.AttachToDocument();
Native.document.body.style.overflow = IStyle.OverflowEnum.hidden;
canvas.style.SetLocation(0, 0, gl_viewportWidth, gl_viewportHeight);
canvas.width = gl_viewportWidth;
canvas.height = gl_viewportHeight;
#endregion
var h = 1f;
var r1 = .5f;
var r2 = .2f;
var nPhi = 500;
var prog = gl.createProgram();
#region createShader
Func <ScriptCoreLib.GLSL.Shader, WebGLShader> createShader = (src) =>
{
var shader = gl.createShader(src);
// verify
if (gl.getShaderParameter(shader, gl.COMPILE_STATUS) == null)
{
Native.window.alert("error in SHADER:\n" + gl.getShaderInfoLog(shader));
throw new InvalidOperationException("shader failed");
}
return(shader);
};
#endregion
var vs = createShader(new GeometryVertexShader());
var fs = createShader(new GeometryFragmentShader());
gl.attachShader(prog, vs);
gl.attachShader(prog, fs);
gl.linkProgram(prog);
gl.useProgram(prog);
var pt = new IArray <float>();
var nt = new IArray <float>();
var Phi = 0.0;
var dPhi = 2 * Math.PI / (nPhi - 1);
var Nx = r1 - r2;
var Ny = h;
var N = (float)Math.Sqrt(Nx * Nx + Ny * Ny);
Nx /= N;
Ny /= N;
for (var i = 0; i < nPhi; i++)
{
var cosPhi = Math.Cos(Phi);
var sinPhi = Math.Sin(Phi);
var cosPhi2 = Math.Cos(Phi + dPhi / 2);
var sinPhi2 = Math.Sin(Phi + dPhi / 2);
pt.push(-h / 2);
pt.push((float)(cosPhi * r1));
pt.push((float)(sinPhi * r1)); // points
nt.push(Nx);
nt.push((float)(Ny * cosPhi));
nt.push((float)(Ny * sinPhi)); // normals
pt.push(h / 2);
pt.push((float)(cosPhi2 * r2));
pt.push((float)(sinPhi2 * r2)); // points
nt.push(Nx);
nt.push((float)(Ny * cosPhi2));
nt.push((float)(Ny * sinPhi2)); // normals
Phi += dPhi;
}
var posLoc = gl.getAttribLocation(prog, "aPos");
gl.enableVertexAttribArray((uint)posLoc);
gl.bindBuffer(gl.ARRAY_BUFFER, gl.createBuffer());
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(pt.ToArray()), gl.STATIC_DRAW);
gl.vertexAttribPointer((uint)posLoc, 3, gl.FLOAT, false, 0, 0);
var normLoc = gl.getAttribLocation(prog, "aNorm");
gl.enableVertexAttribArray((uint)normLoc);
gl.bindBuffer(gl.ARRAY_BUFFER, gl.createBuffer());
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(nt), gl.STATIC_DRAW);
gl.vertexAttribPointer((uint)normLoc, 3, gl.FLOAT, false, 0, 0);
var prMatrix = new CanvasMatrix4();
gl.uniformMatrix4fv(gl.getUniformLocation(prog, "prMatrix"),
false, new Float32Array(prMatrix.getAsArray()));
var mvMatrix = new CanvasMatrix4();
var rotMat = new CanvasMatrix4();
rotMat.makeIdentity();
rotMat.rotate(-40, 0, 1, 0);
var mvMatLoc = gl.getUniformLocation(prog, "mvMatrix");
gl.enable(gl.DEPTH_TEST);
gl.depthFunc(gl.LEQUAL);
gl.clearDepth(1.0f);
gl.clearColor(0, 0, .5f, 1);
var xOffs = 0;
var yOffs = 0;
var drag = 0;
var xRot = 0;
var yRot = 0;
var transl = -1.5f;
Action drawScene = delegate
{
gl.uniformMatrix4fv(gl.getUniformLocation(prog, "prMatrix"),
false, new Float32Array(prMatrix.getAsArray()));
gl.viewport(0, 0, gl_viewportWidth, gl_viewportHeight);
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
rotMat.rotate(xRot / 5, 1, 0, 0);
rotMat.rotate(yRot / 5, 0, 1, 0);
yRot = 0;
xRot = 0;
mvMatrix.load(rotMat);
mvMatrix.translate(0, 0, transl);
gl.uniformMatrix4fv(mvMatLoc, false,
new Float32Array(mvMatrix.getAsArray()));
gl.drawArrays(gl.TRIANGLE_STRIP, 0, 2 * nPhi);
gl.flush();
};
#region IsDisposed
var IsDisposed = false;
this.Dispose = delegate
{
if (IsDisposed)
{
return;
}
IsDisposed = true;
canvas.Orphanize();
};
#endregion
#region requestFullscreen
Native.Document.body.ondblclick +=
delegate
{
if (IsDisposed)
{
return;
}
// http://tutorialzine.com/2012/02/enhance-your-website-fullscreen-api/
Native.Document.body.requestFullscreen();
};
#endregion
var c = 0;
Native.window.onframe += delegate
{
if (IsDisposed)
{
return;
}
c++;
xRot += 2;
yRot += 3;
Native.document.title = "" + c;
drawScene();
//animate();
};
#region AtResize
Action AtResize =
delegate
{
gl_viewportWidth = Native.window.Width;
gl_viewportHeight = Native.window.Height;
prMatrix = new CanvasMatrix4();
prMatrix.perspective(45f, (f)gl_viewportWidth / (f)gl_viewportHeight, 1f, 100f);
canvas.style.SetLocation(0, 0, gl_viewportWidth, gl_viewportHeight);
canvas.width = gl_viewportWidth;
canvas.height = gl_viewportHeight;
};
Native.window.onresize +=
e =>
{
AtResize();
};
AtResize();
#endregion
}
/// <summary>
/// This is a javascript application.
/// </summary>
/// <param name="page">HTML document rendered by the web server which can now be enhanced.</param>
public Application(IDefault page = null)
{
var gl_viewportWidth = Native.window.Width;
var gl_viewportHeight = Native.window.Height;
var gl = new WebGLRenderingContext();
var canvas = gl.canvas.AttachToDocument();
Native.document.body.style.overflow = IStyle.OverflowEnum.hidden;
canvas.style.SetLocation(0, 0, gl_viewportWidth, gl_viewportWidth);
gl.viewport(0, 0, gl_viewportWidth, gl_viewportWidth);
var prog = gl.createProgram(
new CubicVertexShader(),
new CubicFragmentShader()
);
var posLoc = 0U;
gl.bindAttribLocation(prog, posLoc, "aPos");
var normLoc = 1U;
gl.bindAttribLocation(prog, normLoc, "aNorm");
gl.linkProgram(prog);
gl.useProgram(prog);
#region data
var a = 1.0f; // where is it used? what shall be the type?
var pt0 = new float[] { -a, -a, a, a, -a, a, -a, a, a, a, a, a, // cubic
-a, a, a, a, a, a, -a, a, -a, a, a, -a,
-a, a, -a, a, a, -a, -a, -a, -a, a, -a, -a, -a, -a, -a, a, -a, -a, -a, -a, a, a, -a, a,
a, a, a, a, a, -a, a, -a, a, a, -a, -a, -a, a, a, -a, a, -a, -a, -a, a, -a, -a, -a };
var nt = new float[] { 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0,
0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0,
1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0 };
var ind = new ushort[] { 0, 1, 2, 1, 2, 3, 4, 5, 6, 5, 6, 7, 8, 9, 10, 9, 10, 11,
12, 13, 14, 13, 14, 15, 16, 17, 18, 17, 18, 19, 20, 21, 22, 21, 22, 23 };
var nPhi = 25;
var nTheta = 12;
var r = .15;
var dPhi = 2.0 * Math.PI / nPhi;
var dTheta = Math.PI / nTheta;
for (var j = 0; j <= nTheta; j++)
{
var Theta = j * dTheta;
var cosTheta = Math.Cos(Theta);
var sinTheta = Math.Sin(Theta);
for (var i = 0; i <= nPhi; i++)
{
var Phi = i * dPhi;
var cosPhi = Math.Cos(Phi);
var sinPhi = Math.Sin(Phi);
((IArray <float>)(object) pt0).push((float)(r * cosPhi * sinTheta));
((IArray <float>)(object) pt0).push((float)(-r * sinPhi * sinTheta));
((IArray <float>)(object) pt0).push((float)(r * cosTheta));
((IArray <float>)(object) nt).push((float)(cosPhi * sinTheta));
((IArray <float>)(object) nt).push((float)(-sinPhi * sinTheta));
((IArray <float>)(object) nt).push((float)(cosTheta));
}
}
var n1 = nPhi + 1;
var off = 24;
for (var i = 0; i < nTheta; i++)
{
for (var j = 0; j < nPhi; j++)
{
((IArray <int>)(object) ind).push(i * n1 + j + off);
((IArray <int>)(object) ind).push((i + 1) * n1 + j + 1 + off);
((IArray <int>)(object) ind).push(i * n1 + j + 1 + off);
((IArray <int>)(object) ind).push(i * n1 + j + off);
((IArray <int>)(object) ind).push((i + 1) * n1 + j + off);
((IArray <int>)(object) ind).push((i + 1) * n1 + j + 1 + off);
}
}
#endregion
gl.enableVertexAttribArray(posLoc);
gl.bindBuffer(gl.ARRAY_BUFFER, gl.createBuffer());
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(pt0), gl.STATIC_DRAW);
gl.vertexAttribPointer(posLoc, 3, gl.FLOAT, false, 0, 0);
gl.enableVertexAttribArray(normLoc);
gl.bindBuffer(gl.ARRAY_BUFFER, gl.createBuffer());
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(nt), gl.STATIC_DRAW);
gl.vertexAttribPointer(normLoc, 3, gl.FLOAT, false, 0, 0);
gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, gl.createBuffer());
gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, new Uint16Array(ind),
gl.STATIC_DRAW);
var prMatrix = new CanvasMatrix4();
prMatrix.perspective(45f, 1f, .1f, 100f);
gl.uniformMatrix4fv(gl.getUniformLocation(prog, "prMatrix"),
false, new Float32Array(prMatrix.getAsArray()));
var mvMatrix = new CanvasMatrix4();
var rotMat = new CanvasMatrix4();
rotMat.makeIdentity();
rotMat.rotate(25, 1, 1, 0);
var mvMatLoc = gl.getUniformLocation(prog, "mvMatrix");
var colorLoc = gl.getUniformLocation(prog, "u_color");
var line_prog = gl.createProgram(
new LineVertexShader(),
new LineFragmentShader()
);
var lineLoc = 2U;
gl.bindAttribLocation(line_prog, lineLoc, "aPos");
gl.linkProgram(line_prog);
gl.useProgram(line_prog);
gl.uniformMatrix4fv(gl.getUniformLocation(line_prog, "prMatrix"),
false, new Float32Array(prMatrix.getAsArray()));
var mvMatLineLoc = gl.getUniformLocation(line_prog, "mvMatrix");
var pt1 = new float[] { 2, 1, 1, -2, 1, 1, 2, -1, 1, -2, -1, 1, 2, 1, -1, -2, 1, -1, 2, -1, -1, -2, -1, -1,
1, 2, 1, 1, -2, 1, 1, 2, -1, 1, -2, -1, -1, 2, 1, -1, -2, 1, -1, 2, -1, -1, -2, -1,
1, 1, 2, 1, 1, -2, -1, 1, 2, -1, 1, -2, 1, -1, 2, 1, -1, -2, -1, -1, 2, -1, -1, -2 };
gl.enableVertexAttribArray(lineLoc);
gl.bindBuffer(gl.ARRAY_BUFFER, gl.createBuffer());
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(pt1), gl.STATIC_DRAW);
gl.vertexAttribPointer(lineLoc, 3, gl.FLOAT, false, 0, 0);
gl.enable(gl.DEPTH_TEST);
gl.depthFunc(gl.LEQUAL);
gl.clearDepth(1.0f);
gl.clearColor(.5f, 1f, .5f, 1f);
gl.lineWidth(2);
var xOffs = 0;
var yOffs = 0;
var drag = 0;
var xRot = 0f;
var yRot = 0f;
var transl = -6.0f;
#region drawBall
Action <f, f, f> drawBall = (x, y, z) =>
{
mvMatrix.makeIdentity();
mvMatrix.translate(x, y, z);
mvMatrix.multRight(rotMat);
mvMatrix.translate(0, 0, transl);
gl.uniformMatrix4fv(mvMatLoc, false,
new Float32Array(mvMatrix.getAsArray()));
gl.drawElements(gl.TRIANGLES, 6 * nPhi * nTheta, gl.UNSIGNED_SHORT, 72);
};
#endregion
#region drawScene
Action drawScene = delegate
{
gl.viewport(0, 0, gl_viewportWidth, gl_viewportWidth);
gl.useProgram(prog);
gl.uniformMatrix4fv(gl.getUniformLocation(prog, "prMatrix"),
false, new Float32Array(prMatrix.getAsArray()));
rotMat.rotate(xRot / 5, 1, 0, 0);
rotMat.rotate(yRot / 5, 0, 1, 0);
yRot = 0;
xRot = 0;
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
gl.uniform4f(colorLoc, 1, 1, 0, 1);
drawBall(1, 1, 1); drawBall(-1, 1, 1); drawBall(1, -1, 1);
drawBall(1, 1, -1); drawBall(-1, -1, 1); drawBall(-1, 1, -1);
drawBall(1, -1, -1); drawBall(-1, -1, -1);
mvMatrix.load(rotMat);
mvMatrix.translate(0, 0, transl);
gl.uniformMatrix4fv(mvMatLoc, false,
new Float32Array(mvMatrix.getAsArray()));
gl.enable(gl.BLEND);
gl.blendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA);
gl.uniform4f(colorLoc, .0f, .0f, .9f, .7f);
gl.depthMask(false);
gl.drawElements(gl.TRIANGLES, 36, gl.UNSIGNED_SHORT, 0);
gl.depthMask(true);
gl.disable(gl.BLEND);
gl.useProgram(line_prog);
gl.uniformMatrix4fv(gl.getUniformLocation(line_prog, "prMatrix"),
false, new Float32Array(prMatrix.getAsArray()));
gl.uniformMatrix4fv(mvMatLineLoc, false,
new Float32Array(mvMatrix.getAsArray()));
gl.drawArrays(gl.LINES, 0, 24);
gl.flush();
};
#endregion
drawScene();
#region AtResize
Action AtResize = delegate
{
gl_viewportWidth = Native.window.Width;
gl_viewportHeight = Native.window.Height;
prMatrix = new CanvasMatrix4();
//var aspect = (f)gl_viewportWidth / (f)gl_viewportHeight;
var aspect = Native.window.aspect;
Console.WriteLine(
new { gl_viewportWidth, gl_viewportHeight, aspect }
);
//Native.document.title = new { aspect }.ToString();
prMatrix.perspective(45f, (f)aspect, 1f, 100f);
canvas.style.SetLocation(0, 0, gl_viewportWidth, gl_viewportHeight);
canvas.width = gl_viewportWidth;
canvas.height = gl_viewportHeight;
drawScene();
};
AtResize();
Native.window.onresize += delegate
{
AtResize();
};
#endregion
#region mouse
canvas.onmousedown += ev =>
{
ev.PreventDefault();
drag = 1;
xOffs = ev.CursorX;
yOffs = ev.CursorY;
canvas.requestPointerLock();
};
canvas.onmouseup += ev =>
{
ev.PreventDefault();
drag = 0;
xOffs = ev.CursorX;
yOffs = ev.CursorY;
Native.Document.exitPointerLock();
};
canvas.onmousemove += ev =>
{
if (drag == 0)
{
return;
}
if (Native.Document.pointerLockElement == canvas)
{
xRot += ev.movementY;
yRot += ev.movementX;
drawScene();
return;
}
ev.PreventDefault();
if (ev.shiftKey)
{
transl *= 1 + (ev.CursorY - yOffs) / 1000;
yRot = -xOffs + ev.CursorX;
}
else
{
yRot = -xOffs + ev.CursorX;
xRot = -yOffs + ev.CursorY;
}
xOffs = ev.CursorX;
yOffs = ev.CursorY;
drawScene();
};
#endregion
#region onmousewheel
canvas.onmousewheel +=
ev =>
{
var del = 1.1f;
if (ev.shiftKey)
{
del = 1.01f;
}
if (ev.WheelDirection > 0)
{
transl *= del;
}
else
{
transl *= (1 / del);
}
drawScene();
ev.PreventDefault();
};
#endregion
#region IsDisposed
var IsDisposed = false;
this.Dispose = delegate
{
if (IsDisposed)
{
return;
}
IsDisposed = true;
canvas.Orphanize();
};
#endregion
#region requestFullscreen
Native.Document.body.ondblclick +=
delegate
{
if (IsDisposed)
{
return;
}
// http://tutorialzine.com/2012/02/enhance-your-website-fullscreen-api/
canvas.requestFullscreen();
};
#endregion
#region tick
Native.window.onframe += delegate
{
if (IsDisposed)
{
return;
}
if (drag == 0)
{
xRot += 2;
yRot += 3;
}
drawScene();
//animate();
};
#endregion
//Native.Document.body.style.backgroundColor = Color.FromRGB(0x80, 0xFF, 0x80);
}
