albertosouza

/**
 * Script simples para importação de dados de cotação da Bovespa
 *
 * Requisitos:
 *   - Node.js instalado
 *   - instalar as dependencias: npm install extract-zip moment request
 *
 * Exemplo de uso: node script_simples_importaca_cota_hist_bovespa.js 05022019
 *
 * Post relacionado: https://albertosouza.net/artigos/22-importando-dados-bovespa

henriquelalves

// Based on http://www.geeks3d.com/20140213/glsl-shader-library-fish-eye-and-dome-and-barrel-distortion-post-processing-filters/2/

float PI = 3.1415926535;
uniform float BarrelPower;

vec2 distort(vec2 p) {
	
	if(p.x > 0.0){
		float angle = p.y / p.x;
		float theta = atan(angle);

neilmendoza

mat4 rotationMatrix(vec3 axis, float angle)
{
    axis = normalize(axis);
    float s = sin(angle);
    float c = cos(angle);
    float oc = 1.0 - c;
    
    return mat4(oc * axis.x * axis.x + c,           oc * axis.x * axis.y - axis.z * s,  oc * axis.z * axis.x + axis.y * s,  0.0,
                oc * axis.x * axis.y + axis.z * s,  oc * axis.y * axis.y + c,           oc * axis.y * axis.z - axis.x * s,  0.0,
                oc * axis.z * axis.x - axis.y * s,  oc * axis.y * axis.z + axis.x * s,  oc * axis.z * axis.z + c,           0.0,