プログラミング de 落描き – ページ 735 – クリエイティブ・コーディングによる生成物とソース

2018年11月13日2018年11月13日

Black Hole. openFrameworks

[ Video ]

[ About ]
Day 13 Black Hole

openFrameworksで座標計算、GLSLで光球描写のパターン

openFframeworks is computing coordinate, GLSL is drawing light sphere.

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp {

public:
	void setup();
	void update();
	void draw();

	void keyPressed(int key) {};
	void keyReleased(int key) {};
	void mouseMoved(int x, int y) {};
	void mouseDragged(int x, int y, int button) {};
	void mousePressed(int x, int y, int button) {};
	void mouseReleased(int x, int y, int button) {};
	void mouseEntered(int x, int y) {};
	void mouseExited(int x, int y) {};
	void windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	int number_of_location;
	vector<ofPoint> locations;
	vector<float> velocity;

	ofFbo src;
	ofFbo dst;
	ofShader shader;
};

#pragma once

#include "ofMain.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

void mouseMoved(int x, int y) {};

void mouseDragged(int x, int y, int button) {};

void mousePressed(int x, int y, int button) {};

void mouseReleased(int x, int y, int button) {};

void mouseEntered(int x, int y) {};

void mouseExited(int x, int y) {};

void windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

int number_of_location;

vector<ofPoint> locations;

vector<float> velocity;

ofFbo src;

ofFbo dst;

ofShader shader;

};

#include "ofApp.h"

//--------------------------------------------------------------
void ofApp::setup() {

	ofSetFrameRate(60);
	ofSetWindowTitle("openframeworks");

	ofBackground(0);

	this->number_of_location = 200;
	for (int i = 0; i < this->number_of_location; i++) {

		ofPoint point = ofPoint(ofRandom(-ofGetWidth(), ofGetWidth()), ofRandom(-ofGetHeight(), ofGetHeight()));
		
		this->locations.push_back(point);
		this->velocity.push_back(1.f);
	}

	this->src.allocate(ofGetWidth(), ofGetHeight());
	this->dst.allocate(ofGetWidth(), ofGetHeight());
	this->shader.load("shader/shader.vert", "shader/shader.frag");
}
//--------------------------------------------------------------
void ofApp::update() {

	for (int i = 0; i < this->locations.size(); i++) {

		float len = this->locations[i].length();
		if (len < 100) {

			ofPoint point;
			while (point.length() < 100) {

				point = ofPoint(ofRandom(-ofGetWidth(), ofGetWidth()), ofRandom(-ofGetHeight(), ofGetHeight()));
			}
		
			this->locations[i] = point;
			this->velocity[i] = 1.f;
		}
		else {

			this->locations[i] = this->locations[i].normalized() * (len * this->velocity[i]);
			this->velocity[i] *= 0.999f;
		}
	}
}

//--------------------------------------------------------------
void ofApp::draw() {

	vector<glm::vec2> targets;
	for (int i = 0; i < this->number_of_location; i++) {

		glm::vec2 target = glm::vec2(this->locations[i].x + ofGetWidth() * 0.5, this->locations[i].y + ofGetHeight() * 0.5);
		targets.push_back(target);
	}

	this->dst.begin();

	this->shader.begin();
	this->shader.setUniform1f("time", ofGetElapsedTimef());
	this->shader.setUniform2f("resolution", ofGetWidth(), ofGetHeight());
	this->shader.setUniform2fv("targets", &targets[0].x, this->number_of_location);
	this->shader.setUniformTexture("fbo", this->src.getTexture(), 1);

	ofDrawRectangle(0, 0, ofGetWidth(), ofGetHeight());

	this->shader.end();
	this->dst.end();

	this->dst.draw(0, 0);
	std::swap(this->src, this->dst);
}

//--------------------------------------------------------------
int main() {

	ofGLWindowSettings settings;
	settings.setGLVersion(3, 2);
	settings.setSize(720, 720);
	ofCreateWindow(settings);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

//--------------------------------------------------------------

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(0);

this->number_of_location = 200;

for (int i = 0; i < this->number_of_location; i++) {

ofPoint point = ofPoint(ofRandom(-ofGetWidth(), ofGetWidth()), ofRandom(-ofGetHeight(), ofGetHeight()));

this->locations.push_back(point);

this->velocity.push_back(1.f);

}

this->src.allocate(ofGetWidth(), ofGetHeight());

this->dst.allocate(ofGetWidth(), ofGetHeight());

this->shader.load("shader/shader.vert", "shader/shader.frag");

}

//--------------------------------------------------------------

void ofApp::update() {

for (int i = 0; i < this->locations.size(); i++) {

float len = this->locations[i].length();

if (len < 100) {

ofPoint point;

while (point.length() < 100) {

point = ofPoint(ofRandom(-ofGetWidth(), ofGetWidth()), ofRandom(-ofGetHeight(), ofGetHeight()));

}

this->locations[i] = point;

this->velocity[i] = 1.f;

}

else {

this->locations[i] = this->locations[i].normalized() * (len * this->velocity[i]);

this->velocity[i] *= 0.999f;

}

//--------------------------------------------------------------

void ofApp::draw() {

vector<glm::vec2> targets;

for (int i = 0; i < this->number_of_location; i++) {

glm::vec2 target = glm::vec2(this->locations[i].x + ofGetWidth() * 0.5, this->locations[i].y + ofGetHeight() * 0.5);

targets.push_back(target);

}

this->dst.begin();

this->shader.begin();

this->shader.setUniform1f("time", ofGetElapsedTimef());

this->shader.setUniform2f("resolution", ofGetWidth(), ofGetHeight());

this->shader.setUniform2fv("targets", &targets[0].x, this->number_of_location);

this->shader.setUniformTexture("fbo", this->src.getTexture(), 1);

ofDrawRectangle(0, 0, ofGetWidth(), ofGetHeight());

this->shader.end();

this->dst.end();

this->dst.draw(0, 0);

std::swap(this->src, this->dst);

}

//--------------------------------------------------------------

int main() {

ofGLWindowSettings settings;

settings.setGLVersion(3, 2);

settings.setSize(720, 720);

ofCreateWindow(settings);

ofRunApp(new ofApp());

}

#version 150

uniform mat4 modelViewProjectionMatrix;
in vec4 position;

void main(){
	gl_Position = modelViewProjectionMatrix * position;
}

#version 150

uniform mat4 modelViewProjectionMatrix;

in vec4 position;

void main(){

gl_Position = modelViewProjectionMatrix * position;

}

#version 150

const int number_of_targets = 200;

uniform float time;
uniform vec2 resolution;
uniform vec2 targets[number_of_targets];
uniform sampler2DRect fbo;

out vec4 outputColor;

void main() {

  vec2 p = (gl_FragCoord.xy * 2.0 - resolution) / min(resolution.x, resolution.y);
  vec3 color = vec3(0.0);

  for(int i = 0; i < number_of_targets; i++){

    vec2 t = vec2(targets[i].x, -targets[i].y) / min(resolution.x, resolution.y) * 2.0;
    t.xy += vec2(-resolution.x, resolution.y) / min(resolution.x, resolution.y);

    float v = 0.005 / length(p - t);
    vec3 c = vec3(smoothstep(0.01, 1.0, v));
    color += c;
  }

  vec4 fbo_value = texture(fbo, vec2(gl_FragCoord.x, gl_FragCoord.y));
  outputColor = vec4(color, 1.0) + fbo_value * 0.85;
}

#version 150

const int number_of_targets = 200;

uniform float time;

uniform vec2 resolution;

uniform vec2 targets[number_of_targets];

uniform sampler2DRect fbo;

out vec4 outputColor;

void main() {

vec2 p = (gl_FragCoord.xy * 2.0 - resolution) / min(resolution.x, resolution.y);

vec3 color = vec3(0.0);

for(int i = 0; i < number_of_targets; i++){

vec2 t = vec2(targets[i].x, -targets[i].y) / min(resolution.x, resolution.y) * 2.0;

t.xy += vec2(-resolution.x, resolution.y) / min(resolution.x, resolution.y);

float v = 0.005 / length(p - t);

vec3 c = vec3(smoothstep(0.01, 1.0, v));

color += c;

}

vec4 fbo_value = texture(fbo, vec2(gl_FragCoord.x, gl_FragCoord.y));

outputColor = vec4(color, 1.0) + fbo_value * 0.85;

}

[ Link ]
https://github.com/junkiyoshi/Insta20181113

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2018年11月12日

Bread. openFrameworks

[ Video ]

[ About ]
Day 12 Bread

動画から異なるフレームの画像を組み合わせて一枚の絵に。

Combine images of different frames from a video to a picture.

[ Source ]

#pragma once
#include "ofMain.h"
#include "opencv2/opencv.hpp"

class ofApp : public ofBaseApp {

public:
	void setup();
	void update();
	void draw();

	void keyPressed(int key) {};
	void keyReleased(int key) {};
	void mouseMoved(int x, int y) {};
	void mouseDragged(int x, int y, int button) {};
	void mousePressed(int x, int y, int button) {};
	void mouseReleased(int x, int y, int button) {};
	void windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	cv::VideoCapture cap;
	cv::Size cap_size;
	int number_of_frames;
	vector<cv::Mat> frames;

	float rect_size;
	vector<cv::Mat> rect_frames;
	vector<ofImage*> rect_images;
	vector<cv::Rect> cv_rects;
};

#pragma once

#include "ofMain.h"

#include "opencv2/opencv.hpp"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

void mouseMoved(int x, int y) {};

void mouseDragged(int x, int y, int button) {};

void mousePressed(int x, int y, int button) {};

void mouseReleased(int x, int y, int button) {};

void windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

cv::VideoCapture cap;

cv::Size cap_size;

int number_of_frames;

vector<cv::Mat> frames;

float rect_size;

vector<cv::Mat> rect_frames;

vector<ofImage*> rect_images;

vector<cv::Rect> cv_rects;

};

#include "ofApp.h"

//--------------------------------------------------------------
void ofApp::setup() {

	ofBackground(239);
	ofSetWindowTitle("Insta");
	ofSetFrameRate(30);

	this->cap.open("D:\\video\\bread.mp4");
	this->cap_size = cv::Size(1280, 720);

	this->rect_size = 40;
	for (int x = 0; x < this->cap_size.width; x += this->rect_size) {

		for (int y = 0; y < this->cap_size.height; y += this->rect_size) {

			ofImage* image = new ofImage();
			image->allocate(this->rect_size, this->rect_size, OF_IMAGE_COLOR);
			this->rect_images.push_back(image);

			cv::Mat frame = cv::Mat(cv::Size(image->getWidth(), image->getHeight()), CV_MAKETYPE(CV_8UC3, image->getPixels().getNumChannels()), image->getPixels().getData(), 0);
			this->rect_frames.push_back(frame);

			cv::Rect rect = cv::Rect(x, y, this->rect_size, this->rect_size);
			this->cv_rects.push_back(rect);
		}
	}

	cap.set(CV_CAP_PROP_POS_FRAMES, 600);
	this->number_of_frames = 600;
	for (int i = 0; i < this->number_of_frames; i++) {

		cv::Mat src, frame;
		this->cap >> src;
		if (src.empty()) {

			return;
		}

		cv::resize(src, frame, this->cap_size);
		cv::cvtColor(frame, frame, CV_BGR2RGB);

		this->frames.push_back(frame);
	}
}

//--------------------------------------------------------------
void ofApp::update() {

	for (int i = 0; i < this->rect_images.size(); i++) {

		int frames_index = ofMap(ofNoise(this->cv_rects[i].x * 0.0005, this->cv_rects[i].y * 0.0005, ofGetFrameNum() * 0.008), 0, 1, 0, this->number_of_frames);
		cv::Mat tmp_box_image(this->frames[frames_index], this->cv_rects[i]);
		tmp_box_image.copyTo(this->rect_frames[i]);

		this->rect_images[i]->update();
	}
}

//--------------------------------------------------------------
void ofApp::draw() {

	for (int i = 0; i < this->rect_images.size(); i++) {

		this->rect_images[i]->draw(this->cv_rects[i].x, this->cv_rects[i].y);
	}
}

//========================================================================
int main() {

	ofSetupOpenGL(1280, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

//--------------------------------------------------------------

void ofApp::setup() {

ofBackground(239);

ofSetWindowTitle("Insta");

ofSetFrameRate(30);

this->cap.open("D:\\video\\bread.mp4");

this->cap_size = cv::Size(1280, 720);

this->rect_size = 40;

for (int x = 0; x < this->cap_size.width; x += this->rect_size) {

for (int y = 0; y < this->cap_size.height; y += this->rect_size) {

ofImage* image = new ofImage();

image->allocate(this->rect_size, this->rect_size, OF_IMAGE_COLOR);

this->rect_images.push_back(image);

cv::Mat frame = cv::Mat(cv::Size(image->getWidth(), image->getHeight()), CV_MAKETYPE(CV_8UC3, image->getPixels().getNumChannels()), image->getPixels().getData(), 0);

this->rect_frames.push_back(frame);

cv::Rect rect = cv::Rect(x, y, this->rect_size, this->rect_size);

this->cv_rects.push_back(rect);

}

cap.set(CV_CAP_PROP_POS_FRAMES, 600);

this->number_of_frames = 600;

for (int i = 0; i < this->number_of_frames; i++) {

cv::Mat src, frame;

this->cap >> src;

if (src.empty()) {

return;

}

cv::resize(src, frame, this->cap_size);

cv::cvtColor(frame, frame, CV_BGR2RGB);

this->frames.push_back(frame);

}

//--------------------------------------------------------------

void ofApp::update() {

for (int i = 0; i < this->rect_images.size(); i++) {

int frames_index = ofMap(ofNoise(this->cv_rects[i].x * 0.0005, this->cv_rects[i].y * 0.0005, ofGetFrameNum() * 0.008), 0, 1, 0, this->number_of_frames);

cv::Mat tmp_box_image(this->frames[frames_index], this->cv_rects[i]);

tmp_box_image.copyTo(this->rect_frames[i]);

this->rect_images[i]->update();

}

//--------------------------------------------------------------

void ofApp::draw() {

for (int i = 0; i < this->rect_images.size(); i++) {

this->rect_images[i]->draw(this->cv_rects[i].x, this->cv_rects[i].y);

}

//========================================================================

int main() {

ofSetupOpenGL(1280, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20181112

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2018年11月11日

RGB. openFrameworks

[ Video ]

[ About ]
Day 11 RGB

座標と時間を引数にパーリンノイズで三色の値をそれぞれ生成して描写。文字の上は対応する色のみ反映されます

Generate value of color from PerlinNoise. Noise parameter is coordinate and time.

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp {

public:
	void setup();
	void update();
	void draw();

	void keyPressed(int key) {};
	void keyReleased(int key) {};
	void mouseMoved(int x, int y) {};
	void mouseDragged(int x, int y, int button) {};
	void mousePressed(int x, int y, int button) {};
	void mouseReleased(int x, int y, int button) {};
	void mouseEntered(int x, int y) {};
	void mouseExited(int x, int y) {};
	void windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	ofFbo fbo;
	ofShader shader;
};

#pragma once

#include "ofMain.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

void mouseMoved(int x, int y) {};

void mouseDragged(int x, int y, int button) {};

void mousePressed(int x, int y, int button) {};

void mouseReleased(int x, int y, int button) {};

void mouseEntered(int x, int y) {};

void mouseExited(int x, int y) {};

void windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofFbo fbo;

ofShader shader;

};

#include "ofApp.h"

//--------------------------------------------------------------
void ofApp::setup() {

	ofSetFrameRate(60);
	ofSetWindowTitle("openframeworks");

	ofBackground(0);

	ofTrueTypeFont font;
	font.loadFont("fonts/Kazesawa-bold.ttf", 250, true, true, true);

	this->fbo.allocate(ofGetWidth(), ofGetHeight());
	this->fbo.begin();

	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

	ofBackground(255, 0);
	ofSetColor(255, 0, 0);
	font.drawString("R", font.stringWidth("R") * -1.5, font.stringHeight("R") * 0.5);
	ofSetColor(0, 255, 0);
	font.drawString("G", font.stringWidth("G") * -0.5, font.stringHeight("G") * 0.5);
	ofSetColor(0, 0, 255);
	font.drawString("B", font.stringWidth("B") *  0.5, font.stringHeight("B") * 0.5);

	this->fbo.end();

	this->shader.load("shader/shader.vert", "shader/shader.frag");
}
//--------------------------------------------------------------
void ofApp::update() {

}

//--------------------------------------------------------------
void ofApp::draw() {

	this->shader.begin();
	this->shader.setUniform1f("time", ofGetElapsedTimef());
	this->shader.setUniform2f("resolution", ofGetWidth(), ofGetHeight());
	this->shader.setUniformTexture("tex", this->fbo.getTexture(), 1);

	ofDrawRectangle(0, 0, ofGetWidth(), ofGetHeight());

	this->shader.end();
}

//--------------------------------------------------------------
int main() {

	ofGLWindowSettings settings;
	settings.setGLVersion(3, 2);
	settings.setSize(720, 720);
	ofCreateWindow(settings);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

//--------------------------------------------------------------

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(0);

ofTrueTypeFont font;

font.loadFont("fonts/Kazesawa-bold.ttf", 250, true, true, true);

this->fbo.allocate(ofGetWidth(), ofGetHeight());

this->fbo.begin();

ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

ofBackground(255, 0);

ofSetColor(255, 0, 0);

font.drawString("R", font.stringWidth("R") * -1.5, font.stringHeight("R") * 0.5);

ofSetColor(0, 255, 0);

font.drawString("G", font.stringWidth("G") * -0.5, font.stringHeight("G") * 0.5);

ofSetColor(0, 0, 255);

font.drawString("B", font.stringWidth("B") * 0.5, font.stringHeight("B") * 0.5);

this->fbo.end();

this->shader.load("shader/shader.vert", "shader/shader.frag");

}

//--------------------------------------------------------------

void ofApp::update() {

}

//--------------------------------------------------------------

void ofApp::draw() {

this->shader.begin();

this->shader.setUniform1f("time", ofGetElapsedTimef());

this->shader.setUniform2f("resolution", ofGetWidth(), ofGetHeight());

this->shader.setUniformTexture("tex", this->fbo.getTexture(), 1);

ofDrawRectangle(0, 0, ofGetWidth(), ofGetHeight());

this->shader.end();

}

//--------------------------------------------------------------

int main() {

ofGLWindowSettings settings;

settings.setGLVersion(3, 2);

settings.setSize(720, 720);

ofCreateWindow(settings);

ofRunApp(new ofApp());

}

#version 150

uniform mat4 modelViewProjectionMatrix;
in vec4 position;

void main(){
	gl_Position = modelViewProjectionMatrix * position;
}

#version 150

uniform mat4 modelViewProjectionMatrix;

in vec4 position;

void main(){

gl_Position = modelViewProjectionMatrix * position;

}

#version 150

uniform float time;
uniform vec2 resolution;
uniform sampler2DRect tex;

out vec4 outputColor;

//
// Description : Array and textureless GLSL 2D/3D/4D simplex
//               noise functions.
//      Author : Ian McEwan, Ashima Arts.
//  Maintainer : stegu
//     Lastmod : 20110822 (ijm)
//     License : Copyright (C) 2011 Ashima Arts. All rights reserved.
//               Distributed under the MIT License. See LICENSE file.
//               https://github.com/ashima/webgl-noise
//               https://github.com/stegu/webgl-noise
//

vec4 mod289(vec4 x) {
  return x - floor(x * (1.0 / 289.0)) * 289.0; }

float mod289(float x) {
  return x - floor(x * (1.0 / 289.0)) * 289.0; }

vec4 permute(vec4 x) {
     return mod289(((x*34.0)+1.0)*x);
}

float permute(float x) {
     return mod289(((x*34.0)+1.0)*x);
}

vec4 taylorInvSqrt(vec4 r)
{
  return 1.79284291400159 - 0.85373472095314 * r;
}

float taylorInvSqrt(float r)
{
  return 1.79284291400159 - 0.85373472095314 * r;
}

vec4 grad4(float j, vec4 ip)
  {
  const vec4 ones = vec4(1.0, 1.0, 1.0, -1.0);
  vec4 p,s;

  p.xyz = floor( fract (vec3(j) * ip.xyz) * 7.0) * ip.z - 1.0;
  p.w = 1.5 - dot(abs(p.xyz), ones.xyz);
  s = vec4(lessThan(p, vec4(0.0)));
  p.xyz = p.xyz + (s.xyz*2.0 - 1.0) * s.www;

  return p;
  }

// (sqrt(5) - 1)/4 = F4, used once below
#define F4 0.309016994374947451

float snoise(vec4 v)
  {
  const vec4  C = vec4( 0.138196601125011,  // (5 - sqrt(5))/20  G4
                        0.276393202250021,  // 2 * G4
                        0.414589803375032,  // 3 * G4
                       -0.447213595499958); // -1 + 4 * G4

// First corner
  vec4 i  = floor(v + dot(v, vec4(F4)) );
  vec4 x0 = v -   i + dot(i, C.xxxx);

// Other corners

// Rank sorting originally contributed by Bill Licea-Kane, AMD (formerly ATI)
  vec4 i0;
  vec3 isX = step( x0.yzw, x0.xxx );
  vec3 isYZ = step( x0.zww, x0.yyz );
//  i0.x = dot( isX, vec3( 1.0 ) );
  i0.x = isX.x + isX.y + isX.z;
  i0.yzw = 1.0 - isX;
//  i0.y += dot( isYZ.xy, vec2( 1.0 ) );
  i0.y += isYZ.x + isYZ.y;
  i0.zw += 1.0 - isYZ.xy;
  i0.z += isYZ.z;
  i0.w += 1.0 - isYZ.z;

  // i0 now contains the unique values 0,1,2,3 in each channel
  vec4 i3 = clamp( i0, 0.0, 1.0 );
  vec4 i2 = clamp( i0-1.0, 0.0, 1.0 );
  vec4 i1 = clamp( i0-2.0, 0.0, 1.0 );

  //  x0 = x0 - 0.0 + 0.0 * C.xxxx
  //  x1 = x0 - i1  + 1.0 * C.xxxx
  //  x2 = x0 - i2  + 2.0 * C.xxxx
  //  x3 = x0 - i3  + 3.0 * C.xxxx
  //  x4 = x0 - 1.0 + 4.0 * C.xxxx
  vec4 x1 = x0 - i1 + C.xxxx;
  vec4 x2 = x0 - i2 + C.yyyy;
  vec4 x3 = x0 - i3 + C.zzzz;
  vec4 x4 = x0 + C.wwww;

// Permutations
  i = mod289(i);
  float j0 = permute( permute( permute( permute(i.w) + i.z) + i.y) + i.x);
  vec4 j1 = permute( permute( permute( permute (
             i.w + vec4(i1.w, i2.w, i3.w, 1.0 ))
           + i.z + vec4(i1.z, i2.z, i3.z, 1.0 ))
           + i.y + vec4(i1.y, i2.y, i3.y, 1.0 ))
           + i.x + vec4(i1.x, i2.x, i3.x, 1.0 ));

// Gradients: 7x7x6 points over a cube, mapped onto a 4-cross polytope
// 7*7*6 = 294, which is close to the ring size 17*17 = 289.
  vec4 ip = vec4(1.0/294.0, 1.0/49.0, 1.0/7.0, 0.0) ;

  vec4 p0 = grad4(j0,   ip);
  vec4 p1 = grad4(j1.x, ip);
  vec4 p2 = grad4(j1.y, ip);
  vec4 p3 = grad4(j1.z, ip);
  vec4 p4 = grad4(j1.w, ip);

// Normalise gradients
  vec4 norm = taylorInvSqrt(vec4(dot(p0,p0), dot(p1,p1), dot(p2, p2), dot(p3,p3)));
  p0 *= norm.x;
  p1 *= norm.y;
  p2 *= norm.z;
  p3 *= norm.w;
  p4 *= taylorInvSqrt(dot(p4,p4));

// Mix contributions from the five corners
  vec3 m0 = max(0.6 - vec3(dot(x0,x0), dot(x1,x1), dot(x2,x2)), 0.0);
  vec2 m1 = max(0.6 - vec2(dot(x3,x3), dot(x4,x4)            ), 0.0);
  m0 = m0 * m0;
  m1 = m1 * m1;
  return 49.0 * ( dot(m0*m0, vec3( dot( p0, x0 ), dot( p1, x1 ), dot( p2, x2 )))
               + dot(m1*m1, vec2( dot( p3, x3 ), dot( p4, x4 ) ) ) ) ;
  }

void main() {

  vec2 p = (gl_FragCoord.xy * 2.0 - resolution) / min(resolution.x, resolution.y);

  /*
  float r = (snoise(vec4(10.0, p.x * 0.8, p.y * 0.8, time)) + 1.0) * 0.5;
  float g = (snoise(vec4(20.0, p.x * 0.8, p.y * 0.8, time)) + 1.0) * 0.5;
  float b = (snoise(vec4(30.0, p.x * 0.8, p.y * 0.8, time)) + 1.0) * 0.5;
  */

  float pow = 0.7;
  float r = snoise(vec4(10.0, p.x * pow, p.y * pow, time));
  float g = snoise(vec4(20.0, p.x * pow, p.y * pow, time));
  float b = snoise(vec4(30.0, p.x * pow, p.y * pow, time));

  vec3 v = vec3(r, g, b);
  vec4 t = texture(tex, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));

  v = vec3(v.r * t.r, v.g * t.g, v.b * t.b);
  outputColor = vec4(v, 1.0);
}

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#version 150

uniform float time;

uniform vec2 resolution;

uniform sampler2DRect tex;

out vec4 outputColor;

// Description : Array and textureless GLSL 2D/3D/4D simplex

// noise functions.

// Author : Ian McEwan, Ashima Arts.

// Maintainer : stegu

// Lastmod : 20110822 (ijm)

// Distributed under the MIT License. See LICENSE file.

// https://github.com/ashima/webgl-noise

// https://github.com/stegu/webgl-noise

vec4 mod289(vec4 x) {

return x - floor(x * (1.0 / 289.0)) * 289.0; }

float mod289(float x) {

return x - floor(x * (1.0 / 289.0)) * 289.0; }

vec4 permute(vec4 x) {

return mod289(((x*34.0)+1.0)*x);

}

float permute(float x) {

return mod289(((x*34.0)+1.0)*x);

}

vec4 taylorInvSqrt(vec4 r)

{

return 1.79284291400159 - 0.85373472095314 * r;

}

float taylorInvSqrt(float r)

{

return 1.79284291400159 - 0.85373472095314 * r;

}

vec4 grad4(float j, vec4 ip)

{

const vec4 ones = vec4(1.0, 1.0, 1.0, -1.0);

vec4 p,s;

p.xyz = floor( fract (vec3(j) * ip.xyz) * 7.0) * ip.z - 1.0;

p.w = 1.5 - dot(abs(p.xyz), ones.xyz);

s = vec4(lessThan(p, vec4(0.0)));

p.xyz = p.xyz + (s.xyz*2.0 - 1.0) * s.www;

return p;

}

// (sqrt(5) - 1)/4 = F4, used once below

#define F4 0.309016994374947451

float snoise(vec4 v)

{

const vec4 C = vec4( 0.138196601125011, // (5 - sqrt(5))/20 G4

0.276393202250021, // 2 * G4

0.414589803375032, // 3 * G4

-0.447213595499958); // -1 + 4 * G4

// First corner

vec4 i = floor(v + dot(v, vec4(F4)) );

vec4 x0 = v - i + dot(i, C.xxxx);

// Other corners

// Rank sorting originally contributed by Bill Licea-Kane, AMD (formerly ATI)

vec4 i0;

vec3 isX = step( x0.yzw, x0.xxx );

vec3 isYZ = step( x0.zww, x0.yyz );

// i0.x = dot( isX, vec3( 1.0 ) );

i0.x = isX.x + isX.y + isX.z;

i0.yzw = 1.0 - isX;

// i0.y += dot( isYZ.xy, vec2( 1.0 ) );

i0.y += isYZ.x + isYZ.y;

i0.zw += 1.0 - isYZ.xy;

i0.z += isYZ.z;

i0.w += 1.0 - isYZ.z;

// i0 now contains the unique values 0,1,2,3 in each channel

vec4 i3 = clamp( i0, 0.0, 1.0 );

vec4 i2 = clamp( i0-1.0, 0.0, 1.0 );

vec4 i1 = clamp( i0-2.0, 0.0, 1.0 );

// x0 = x0 - 0.0 + 0.0 * C.xxxx

// x1 = x0 - i1 + 1.0 * C.xxxx

// x2 = x0 - i2 + 2.0 * C.xxxx

// x3 = x0 - i3 + 3.0 * C.xxxx

// x4 = x0 - 1.0 + 4.0 * C.xxxx

vec4 x1 = x0 - i1 + C.xxxx;

vec4 x2 = x0 - i2 + C.yyyy;

vec4 x3 = x0 - i3 + C.zzzz;

vec4 x4 = x0 + C.wwww;

// Permutations

i = mod289(i);

float j0 = permute( permute( permute( permute(i.w) + i.z) + i.y) + i.x);

vec4 j1 = permute( permute( permute( permute (

i.w + vec4(i1.w, i2.w, i3.w, 1.0 ))

+ i.z + vec4(i1.z, i2.z, i3.z, 1.0 ))

+ i.y + vec4(i1.y, i2.y, i3.y, 1.0 ))

+ i.x + vec4(i1.x, i2.x, i3.x, 1.0 ));

// Gradients: 7x7x6 points over a cube, mapped onto a 4-cross polytope

// 7*7*6 = 294, which is close to the ring size 17*17 = 289.

vec4 ip = vec4(1.0/294.0, 1.0/49.0, 1.0/7.0, 0.0) ;

vec4 p0 = grad4(j0, ip);

vec4 p1 = grad4(j1.x, ip);

vec4 p2 = grad4(j1.y, ip);

vec4 p3 = grad4(j1.z, ip);

vec4 p4 = grad4(j1.w, ip);

// Normalise gradients

vec4 norm = taylorInvSqrt(vec4(dot(p0,p0), dot(p1,p1), dot(p2, p2), dot(p3,p3)));

p0 *= norm.x;

p1 *= norm.y;

p2 *= norm.z;

p3 *= norm.w;

p4 *= taylorInvSqrt(dot(p4,p4));

// Mix contributions from the five corners

vec3 m0 = max(0.6 - vec3(dot(x0,x0), dot(x1,x1), dot(x2,x2)), 0.0);

vec2 m1 = max(0.6 - vec2(dot(x3,x3), dot(x4,x4) ), 0.0);

m0 = m0 * m0;

m1 = m1 * m1;

return 49.0 * ( dot(m0*m0, vec3( dot( p0, x0 ), dot( p1, x1 ), dot( p2, x2 )))

+ dot(m1*m1, vec2( dot( p3, x3 ), dot( p4, x4 ) ) ) ) ;

}

void main() {

vec2 p = (gl_FragCoord.xy * 2.0 - resolution) / min(resolution.x, resolution.y);

float r = (snoise(vec4(10.0, p.x * 0.8, p.y * 0.8, time)) + 1.0) * 0.5;

float g = (snoise(vec4(20.0, p.x * 0.8, p.y * 0.8, time)) + 1.0) * 0.5;

float b = (snoise(vec4(30.0, p.x * 0.8, p.y * 0.8, time)) + 1.0) * 0.5;

float pow = 0.7;

float r = snoise(vec4(10.0, p.x * pow, p.y * pow, time));

float g = snoise(vec4(20.0, p.x * pow, p.y * pow, time));

float b = snoise(vec4(30.0, p.x * pow, p.y * pow, time));

vec3 v = vec3(r, g, b);

vec4 t = texture(tex, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));

v = vec3(v.r * t.r, v.g * t.g, v.b * t.b);

outputColor = vec4(v, 1.0);

}

[ Link ]
https://github.com/junkiyoshi/Insta20181111

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