WebGL-112-Final-Project/fnl.html at master · ArthLeu/WebGL-112-Final-Project · GitHub

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<!DOCTYPE html>
<meta charset="UTF-8">
<html>

<head>
<title>Final Programming Assignment</title>
<style>
    body {
        background-color: #EEEEEE;
    }
    label {
        white-space: pre;
    }
</style>

<!-- vertex shader -->
<script type="x-shader/x-vertex" id="vshader-source">
	attribute vec4 a_coords;
	attribute vec3 a_normal;
	uniform mat3 normalMatrix;
	uniform mat4 modelview, projection;

	varying vec4 normalInterp;
	varying vec4 vertexPosition;

	void main(){
		gl_Position = projection * modelview * a_coords;

		normalInterp = vec4(normalMatrix * a_normal, 1.0);
		vertexPosition = modelview * a_coords;
	}

</script>

<!-- fragment shader -->
<script type="x-shader/x-fragment" id="fshader-source">
    #ifdef GL_FRAGMENT_PRECISION_HIGH
       precision highp float;
    #else
       precision mediump float;
    #endif

	varying vec4 normalInterp;
	varying vec4 vertexPosition;

	uniform vec3 specularColor;
	uniform vec4 lightPosition, diffuseColor, lightDirection;

	uniform int ambient, diffuse, specular, spot;


	void main(){

		vec4 normalDir = normalInterp;
		vec4 lightDir = normalize(lightPosition - vertexPosition);

		vec4 reflectDir = reflect(-lightDir, normalDir);
		vec4 viewDir = normalize(-vertexPosition);

		float K_a = 0.1;
		float K_d = 0.55;
		float K_s = 0.1;
		float specularExponent = 0.8;
		const int blinn = 1;

		vec4 ambientVec = K_a * diffuseColor;
		vec4 diffuseVec = K_d * diffuseColor * max(dot(normalDir,lightDir),0.0);

		// Phong shading
		float specAngle = max(dot(reflectDir, viewDir), 0.0);
		vec3 specularVec = K_s * specularColor * pow(specAngle, specularExponent/4.0);

		// Blinn-Phong shading (4x specularExponent)
		vec4 halfDir = normalize(lightDir + viewDir);
		float blinnAngle = max(dot(halfDir, normalDir), 0.0);
		vec3 blinnVec = K_s * specularColor * pow(blinnAngle, specularExponent);

		vec3 combinedVec;
		if (blinn == 1) combinedVec = blinnVec;
		else combinedVec = specularVec;

		gl_FragColor = ambientVec + diffuseVec + vec4(combinedVec, 1.0);
	}

</script>

<script src="gl-matrix-min.js"></script>
<script src="trackball-rotator.js"></script>
<script src="models.js"></script>
<script src="FNL.js"></script>
</head>


<body onload="init()">
Name: Anthony Liu<br/>
Student ID: 79553180<br/>

<p style="width:600px; text-align: left;">

    <label><b>Option:  </b></label>
    <label><b>Animate</b><input type="checkbox" id="animate"></label><br/>

</p>
<div id="canvas-holder">
   <canvas width=700 height=700 id="myGLCanvas" style="background-color:black"></canvas>
</div>

<p>


</p>

</body>


</html>