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    vec2 offSet[4];
 	offSet[0] = vec2(0.,0.);
    offSet[1] = vec2(0.,1.);
    offSet[2] = vec2(1.,0.);
    offSet[3] = vec2(1.,1.);

	vec3 zAxis = normalize( vNormal[0] );
    vec3 yAxis = vec3( 0.0, 1.0, 0.0 );
 vec3 xAxis = normalize( cross(zAxis, yAxis) );

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Stringify Macro

#define STRINGIFY(A) #A

Default Vertex

string vertexShader = STRINGIFY(	

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string serialIn;
    
unsigned char buffer[1];
while( readBytes( buffer, 1) > 0){
	if (buffer[0] == '\n'){
    		break;
    }
    serialIn.push_back(buffer[0]);
};

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cam.setPosition( cam.getPosition()+(targetPos-cam.getPosition())*0.01 );
cam.lookAt(targetPos);

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I am attesting that this GitHub handle patriciogonzalezvivo is linked to the Tezos account tz1NqueFctvNCQrsELm6k4N6XfwAYu5Qp5LN for tzprofiles

sig:edsigtyGKhQWuzB73dYzJfELSjYJt7LwbFEsKD61WF3oVH7Lhok5dgXu3bdZth1U19QwCts7xXwaDyCh7Auqr9Cov1xTXz9Lv4s

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Face by Face

void addFace(ofMesh& mesh, ofVec3f a, ofVec3f b, ofVec3f c) {
	ofVec3f normal = ((b - a).cross(c - a)).normalize();
	mesh.addNormal(normal);
	mesh.addVertex(a);
	mesh.addNormal(normal);
	mesh.addVertex(b);
	mesh.addNormal(normal);

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This tutorial is partialy based on Yuriy’s Czoli article ‘Processing LiDAR to extract building heights’.

Install PostGIS

On Mac OSX

• Install Postgres, PostGIS and OSM-PostGIS tools

brew install postgis 

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RGB - YUB

mat3 yuv2rgb = mat3(1.0, 0.0, 1.28033, 1.0, -0.21482, -0.38059, 1.0, 2.12798, 0.0);
mat3 rgb2yuv = mat3(0.2126, 0.7152, 0.0722, -0.09991, -0.33609, 0.43600, 0.615, -0.5586, -0.05639);

RGB - HSV

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#!/bin/bash

SHADER=$1
SEC=$1

COUNTER=0
for i in `seq -w 0.01 .031 $SEC`; do
	echo $i
    `glslViewer $SHADER -s $i -o frame-$COUNTER.png`
    let COUNTER=COUNTER+1 

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Extracted from https://github.com/rpavlik/maya2osg/tree/master/src/GLSL

Vertex Shader

varying vec2 vTexCoord;
varying vec3 vNormal;
varying vec3 vEye;

void main() {