2020年10月 – ページ 2 – プログラミング de 落描き

2020年10月28日2020年10月28日

Create particle from velocity. And, color reverse. Draw by openFrameworks

[ Video ]

[ About ]
速度の可視化 + 色反転。

Create particle from velocity. And, color reverse

[ 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 windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	ofFbo fbo1;
	ofFbo fbo2;
	ofShader shader;

	vector<glm::vec2> noise_seed_list;
	vector<glm::vec2> location_list;
	vector<glm::vec2> velocity_list;
};

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

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofFbo fbo1;

ofFbo fbo2;

ofShader shader;

vector<glm::vec2> noise_seed_list;

vector<glm::vec2> location_list;

vector<glm::vec2> velocity_list;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(239);
	ofSetColor(0);
	ofEnableDepthTest();

	this->fbo1.allocate(ofGetWidth(), ofGetHeight());
	this->fbo2.allocate(ofGetWidth(), ofGetHeight());
	this->shader.load("shader/shader.vert", "shader/shader.frag");

	for (int i = 0; i < 2; i++) {

		this->noise_seed_list.push_back(glm::vec2(ofRandom(1000), ofRandom(1000)));
	}
}

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

	for (auto& noise_seed : this->noise_seed_list) {

		auto location = glm::vec2(ofMap(ofNoise(noise_seed.x, ofGetFrameNum() * 0.003), 0, 1, 100, ofGetWidth() - 100), ofMap(ofNoise(noise_seed.y, ofGetFrameNum() * 0.003), 0, 1, 100, ofGetHeight() - 100));
		auto next = glm::vec2(ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + 1) * 0.003), 0, 1, 100, ofGetWidth() - 100), ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + 1) * 0.003), 0, 1, 100, ofGetHeight() - 100));
		auto distance = location - next;
		distance *= 2;

		auto future = location + distance * 30;
		auto random_deg = ofRandom(360);
		future += glm::vec2(30 * cos(random_deg * DEG_TO_RAD), 30 * sin(random_deg * DEG_TO_RAD));
		auto future_distance = future - location;

		this->location_list.push_back(location);
		this->velocity_list.push_back(glm::normalize(future_distance) * glm::length(distance));
	}

	for (int i = this->location_list.size() - 1; i > -1; i--) {

		this->location_list[i] += this->velocity_list[i];
		this->velocity_list[i] *= 1.01;

		if (glm::distance(glm::vec2(ofGetWidth() * 0.5, ofGetHeight() * 0.5), this->location_list[i]) > 720) {

			this->location_list.erase(this->location_list.begin() + i);
			this->velocity_list.erase(this->velocity_list.begin() + i);
		}
	}

	this->fbo1.begin();
	ofClear(0);

	for (auto& location : this->location_list) {

		ofDrawCircle(location, 5);
		for (auto& other : this->location_list) {

			if (location == other) continue;

			if (glm::distance(location, other) < 50) {

				ofDrawLine(location, other);
			}
		}
	}

	this->fbo1.end();

	this->fbo2.begin();
	ofClear(0);

	int span = 180;
	auto flag = true;
	for (int x = 0; x < ofGetWidth(); x += span) {

		for (int y = 0; y < ofGetHeight(); y += span) {

			if (flag) { ofDrawRectangle(x, y, span, span); }
			flag = !flag;
		}
		flag = !flag;
	}

	this->fbo2.end();
}

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

	ofFill();
	this->shader.begin();
	this->shader.setUniform1f("time", ofGetElapsedTimef());
	this->shader.setUniform2f("resolution", ofGetWidth(), ofGetHeight());
	this->shader.setUniformTexture("tex1", this->fbo1.getTexture(), 1);
	this->shader.setUniformTexture("tex2", this->fbo2.getTexture(), 2);

	ofDrawRectangle(glm::vec2(0, 0), ofGetWidth(), ofGetHeight());

	this->shader.end();
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetColor(0);

ofEnableDepthTest();

this->fbo1.allocate(ofGetWidth(), ofGetHeight());

this->fbo2.allocate(ofGetWidth(), ofGetHeight());

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

for (int i = 0; i < 2; i++) {

this->noise_seed_list.push_back(glm::vec2(ofRandom(1000), ofRandom(1000)));

}

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

void ofApp::update() {

for (auto& noise_seed : this->noise_seed_list) {

auto location = glm::vec2(ofMap(ofNoise(noise_seed.x, ofGetFrameNum() * 0.003), 0, 1, 100, ofGetWidth() - 100), ofMap(ofNoise(noise_seed.y, ofGetFrameNum() * 0.003), 0, 1, 100, ofGetHeight() - 100));

auto next = glm::vec2(ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + 1) * 0.003), 0, 1, 100, ofGetWidth() - 100), ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + 1) * 0.003), 0, 1, 100, ofGetHeight() - 100));

auto distance = location - next;

distance *= 2;

auto future = location + distance * 30;

auto random_deg = ofRandom(360);

future += glm::vec2(30 * cos(random_deg * DEG_TO_RAD), 30 * sin(random_deg * DEG_TO_RAD));

auto future_distance = future - location;

this->location_list.push_back(location);

this->velocity_list.push_back(glm::normalize(future_distance) * glm::length(distance));

}

for (int i = this->location_list.size() - 1; i > -1; i--) {

this->location_list[i] += this->velocity_list[i];

this->velocity_list[i] *= 1.01;

if (glm::distance(glm::vec2(ofGetWidth() * 0.5, ofGetHeight() * 0.5), this->location_list[i]) > 720) {

this->location_list.erase(this->location_list.begin() + i);

this->velocity_list.erase(this->velocity_list.begin() + i);

}

this->fbo1.begin();

ofClear(0);

for (auto& location : this->location_list) {

ofDrawCircle(location, 5);

for (auto& other : this->location_list) {

if (location == other) continue;

if (glm::distance(location, other) < 50) {

ofDrawLine(location, other);

}

this->fbo1.end();

this->fbo2.begin();

ofClear(0);

int span = 180;

auto flag = true;

for (int x = 0; x < ofGetWidth(); x += span) {

for (int y = 0; y < ofGetHeight(); y += span) {

if (flag) { ofDrawRectangle(x, y, span, span); }

flag = !flag;

}

flag = !flag;

}

this->fbo2.end();

}

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

void ofApp::draw() {

ofFill();

this->shader.begin();

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

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

this->shader.setUniformTexture("tex1", this->fbo1.getTexture(), 1);

this->shader.setUniformTexture("tex2", this->fbo2.getTexture(), 2);

ofDrawRectangle(glm::vec2(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;
in vec2 texcoord;
out vec2 texCoordVarying;

void main(){

	texCoordVarying = texcoord;
	gl_Position = modelViewProjectionMatrix * position;
}

#version 150

uniform mat4 modelViewProjectionMatrix;

in vec4 position;

in vec2 texcoord;

out vec2 texCoordVarying;

void main(){

texCoordVarying = texcoord;

gl_Position = modelViewProjectionMatrix * position;

}

#version 150

uniform float time;
uniform vec2 resolution;
uniform sampler2DRect tex1;
uniform sampler2DRect tex2;

in vec2 texCoordVarying;
out vec4 outputColor;

void main() {

  vec4 t1 = texture(tex1, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));
  vec4 t2 = texture(tex2, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));
  
  vec4 c;
  if(t1 == t2){
  	
  	c = vec4(vec3(0.937), 1.0);
  }else{
  
	c = vec4(vec3(0.153), 1.0);
  }
  
  outputColor = c;
}

#version 150

uniform float time;

uniform vec2 resolution;

uniform sampler2DRect tex1;

uniform sampler2DRect tex2;

in vec2 texCoordVarying;

out vec4 outputColor;

void main() {

vec4 t1 = texture(tex1, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));

vec4 t2 = texture(tex2, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));

vec4 c;

if(t1 == t2){

c = vec4(vec3(0.937), 1.0);

}else{

c = vec4(vec3(0.153), 1.0);

}

outputColor = c;

}

[ Link ]
https://github.com/junkiyoshi/Insta20201028

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2020年10月27日2020年10月27日

Black and white. Draw by openFrameworks

[ Video ]

[ About ]
黒と白。

Black and white.

[ 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 windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	ofFbo fbo1;
	ofFbo fbo2;
	ofShader shader;

	glm::vec3 noise_param;
};

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

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofFbo fbo1;

ofFbo fbo2;

ofShader shader;

glm::vec3 noise_param;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(239);
	ofSetColor(0);
	ofEnableDepthTest();

	this->fbo1.allocate(ofGetWidth(), ofGetHeight());
	this->fbo2.allocate(ofGetWidth(), ofGetHeight());
	this->shader.load("shader/shader.vert", "shader/shader.frag");

	this->noise_param = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));
}

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

	ofSeedRandom(39);

	this->fbo1.begin();
	ofClear(0);

	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);
	ofRotateY(90);

	int span = 15;
	ofMesh face, frame;
	frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
	float frame_step = 0.02;
	float len_step = 0.002;
	for (float len = ofGetWidth() * 0.8; len > 0; len -= span) {

		int index = face.getNumVertices();

		auto loc = glm::vec3(
			len * ofMap(ofNoise(this->noise_param.x, ofGetFrameNum() * frame_step + len * len_step), 0, 1, 0, 0.5),
			len * ofMap(ofNoise(this->noise_param.y, ofGetFrameNum() * frame_step + len * len_step), 0, 1, 0, 0.5),
			len * ofMap(ofNoise(this->noise_param.z, ofGetFrameNum() * frame_step + len * len_step), 0, 1, 0, 0.5)
		);

		auto next = glm::vec3(
			(len - span) * ofMap(ofNoise(this->noise_param.x, ofGetFrameNum() * frame_step + (len - span) * len_step), 0, 1, 0, 0.5),
			(len - span) * ofMap(ofNoise(this->noise_param.y, ofGetFrameNum() * frame_step + (len - span) * len_step), 0, 1, 0, 0.5),
			(len - span) * ofMap(ofNoise(this->noise_param.z, ofGetFrameNum() * frame_step + (len - span) * len_step), 0, 1, 0, 0.5)
		);

		face.addVertex(glm::vec3(loc.x, loc.y, loc.z));
		face.addVertex(glm::vec3(-loc.x, loc.y, loc.z));
		face.addVertex(glm::vec3(-next.x, next.y, next.z));
		face.addVertex(glm::vec3(next.x, next.y, next.z));

		frame.addVertex(glm::vec3(loc.x, loc.y, loc.z));
		frame.addVertex(glm::vec3(-loc.x, loc.y, loc.z));
		frame.addVertex(glm::vec3(-next.x, next.y, next.z));
		frame.addVertex(glm::vec3(next.x, next.y, next.z));

		face.addIndex(index + 0); face.addIndex(index + 1); face.addIndex(index + 2);
		face.addIndex(index + 0); face.addIndex(index + 2); face.addIndex(index + 3);

		frame.addIndex(index + 0); frame.addIndex(index + 3);
		frame.addIndex(index + 1); frame.addIndex(index + 2);
	}

	frame.addIndex(0); frame.addIndex(1);
	frame.addIndex(frame.getNumVertices() - 1); frame.addIndex(frame.getNumVertices() - 2);


	for (int i = 0; i < 6; i++) {

		ofRotateX(60);

		ofSetColor(0);
		face.draw();

		ofSetColor(255);
		frame.drawWireframe();
	}

	this->fbo1.end();

	this->fbo2.begin();
	ofClear(0);

	span = 72;
	auto flag = true;
	for (int x = 0; x < ofGetWidth(); x += span) {

		for (int y = 0; y < ofGetHeight(); y += span) {

			if (flag) { ofDrawRectangle(x, y, span, span); }
			flag = !flag;
		}
		flag = !flag;
	}

	this->fbo2.end();
}

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

	ofFill();
	this->shader.begin();
	this->shader.setUniform1f("time", ofGetElapsedTimef());
	this->shader.setUniform2f("resolution", ofGetWidth(), ofGetHeight());
	this->shader.setUniformTexture("tex1", this->fbo1.getTexture(), 1);
	this->shader.setUniformTexture("tex2", this->fbo2.getTexture(), 2);

	ofDrawRectangle(glm::vec2(0, 0), ofGetWidth(), ofGetHeight());

	this->shader.end();
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetColor(0);

ofEnableDepthTest();

this->fbo1.allocate(ofGetWidth(), ofGetHeight());

this->fbo2.allocate(ofGetWidth(), ofGetHeight());

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

this->noise_param = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

}

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

void ofApp::update() {

ofSeedRandom(39);

this->fbo1.begin();

ofClear(0);

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

ofRotateY(90);

int span = 15;

ofMesh face, frame;

frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

float frame_step = 0.02;

float len_step = 0.002;

for (float len = ofGetWidth() * 0.8; len > 0; len -= span) {

int index = face.getNumVertices();

auto loc = glm::vec3(

len * ofMap(ofNoise(this->noise_param.x, ofGetFrameNum() * frame_step + len * len_step), 0, 1, 0, 0.5),

len * ofMap(ofNoise(this->noise_param.y, ofGetFrameNum() * frame_step + len * len_step), 0, 1, 0, 0.5),

len * ofMap(ofNoise(this->noise_param.z, ofGetFrameNum() * frame_step + len * len_step), 0, 1, 0, 0.5)

);

auto next = glm::vec3(

(len - span) * ofMap(ofNoise(this->noise_param.x, ofGetFrameNum() * frame_step + (len - span) * len_step), 0, 1, 0, 0.5),

(len - span) * ofMap(ofNoise(this->noise_param.y, ofGetFrameNum() * frame_step + (len - span) * len_step), 0, 1, 0, 0.5),

(len - span) * ofMap(ofNoise(this->noise_param.z, ofGetFrameNum() * frame_step + (len - span) * len_step), 0, 1, 0, 0.5)

);

face.addVertex(glm::vec3(loc.x, loc.y, loc.z));

face.addVertex(glm::vec3(-loc.x, loc.y, loc.z));

face.addVertex(glm::vec3(-next.x, next.y, next.z));

face.addVertex(glm::vec3(next.x, next.y, next.z));

frame.addVertex(glm::vec3(loc.x, loc.y, loc.z));

frame.addVertex(glm::vec3(-loc.x, loc.y, loc.z));

frame.addVertex(glm::vec3(-next.x, next.y, next.z));

frame.addVertex(glm::vec3(next.x, next.y, next.z));

face.addIndex(index + 0); face.addIndex(index + 1); face.addIndex(index + 2);

face.addIndex(index + 0); face.addIndex(index + 2); face.addIndex(index + 3);

frame.addIndex(index + 0); frame.addIndex(index + 3);

frame.addIndex(index + 1); frame.addIndex(index + 2);

}

frame.addIndex(0); frame.addIndex(1);

frame.addIndex(frame.getNumVertices() - 1); frame.addIndex(frame.getNumVertices() - 2);

for (int i = 0; i < 6; i++) {

ofRotateX(60);

ofSetColor(0);

face.draw();

ofSetColor(255);

frame.drawWireframe();

}

this->fbo1.end();

this->fbo2.begin();

ofClear(0);

span = 72;

auto flag = true;

for (int x = 0; x < ofGetWidth(); x += span) {

for (int y = 0; y < ofGetHeight(); y += span) {

if (flag) { ofDrawRectangle(x, y, span, span); }

flag = !flag;

}

flag = !flag;

}

this->fbo2.end();

}

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

void ofApp::draw() {

ofFill();

this->shader.begin();

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

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

this->shader.setUniformTexture("tex1", this->fbo1.getTexture(), 1);

this->shader.setUniformTexture("tex2", this->fbo2.getTexture(), 2);

ofDrawRectangle(glm::vec2(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;
in vec2 texcoord;
out vec2 texCoordVarying;

void main(){

	texCoordVarying = texcoord;
	gl_Position = modelViewProjectionMatrix * position;
}

#version 150

uniform mat4 modelViewProjectionMatrix;

in vec4 position;

in vec2 texcoord;

out vec2 texCoordVarying;

void main(){

texCoordVarying = texcoord;

gl_Position = modelViewProjectionMatrix * position;

}

#version 150

uniform float time;
uniform vec2 resolution;
uniform sampler2DRect tex1;
uniform sampler2DRect tex2;

in vec2 texCoordVarying;
out vec4 outputColor;

void main() {

  vec4 t1 = texture(tex1, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));
  vec4 t2 = texture(tex2, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));
  
  vec4 c;
  if(t1 == t2){
  	
  	c = vec4(vec3(0.937), 1.0);
  }else{
  
  	c = vec4(vec3(0.153), 1.0);
  }
  
  outputColor = c;
}

#version 150

uniform float time;

uniform vec2 resolution;

uniform sampler2DRect tex1;

uniform sampler2DRect tex2;

in vec2 texCoordVarying;

out vec4 outputColor;

void main() {

vec4 t1 = texture(tex1, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));

vec4 t2 = texture(tex2, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));

vec4 c;

if(t1 == t2){

c = vec4(vec3(0.937), 1.0);

}else{

c = vec4(vec3(0.153), 1.0);

}

outputColor = c;

}

[ Link ]
https://github.com/junkiyoshi/Insta20201027

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2020年10月26日2020年10月26日

Color reverse. Draw by openFrameworks

[ Video ]

[ About ]
色反転。

Color reverse.

[ Source ]

#pragma once
#include "ofMain.h"
#include "ofxBox2d.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 windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	ofFbo fbo1;
	ofFbo fbo2;
	ofShader shader;

	ofxBox2d box2d;
	vector<shared_ptr<ofxBox2dCircle>> circle_list;
	vector<float> radius_list;
	vector<float> life_list;
};

#pragma once

#include "ofMain.h"

#include "ofxBox2d.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 windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofFbo fbo1;

ofFbo fbo2;

ofShader shader;

ofxBox2d box2d;

vector<shared_ptr<ofxBox2dCircle>> circle_list;

vector<float> radius_list;

vector<float> life_list;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(239);
	ofSetColor(0);
	ofEnableDepthTest();

	this->fbo1.allocate(ofGetWidth(), ofGetHeight());
	this->fbo2.allocate(ofGetWidth(), ofGetHeight());
	this->shader.load("shader/shader.vert", "shader/shader.frag");

	this->box2d.init();
	this->box2d.setGravity(0, 50);
	this->box2d.createBounds();
	this->box2d.setFPS(60);
	this->box2d.registerGrabbing();
}

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

	for (int i = this->circle_list.size() - 1; i > -1; i--) {

		this->life_list[i] -= 0.75;

		if (this->life_list[i] < 0) {

			this->circle_list.erase(this->circle_list.begin() + i);
			this->radius_list.erase(this->radius_list.begin() + i);
			this->life_list.erase(this->life_list.begin() + i);
		}
	}

	if (ofGetFrameNum() % 10 == 0) {

		auto radius = ofRandom(10, 30);

		auto circle = make_shared<ofxBox2dCircle>();
		circle->setPhysics(0.5, 0.83, 0.1);
		circle->setup(this->box2d.getWorld(), ofRandom(ofGetWidth() * 0.5 - radius, ofGetWidth() * 0.5 + radius), radius, radius);
		circle->setRotation(ofRandom(360));
		this->circle_list.push_back(circle);
		this->radius_list.push_back(radius);
		this->life_list.push_back(255);
	}

	this->box2d.update();


	this->fbo1.begin();
	ofClear(0);

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

		ofDrawCircle(glm::vec2(this->circle_list[i]->getPosition()), this->radius_list[i]);
	}

	this->fbo1.end();

	this->fbo2.begin();
	ofClear(0);

	for (int x = 0; x < ofGetWidth(); x += 120) {

		ofDrawRectangle(x, 0, 60, ofGetHeight());
	}

	this->fbo2.end();
}

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

	ofFill();
	this->shader.begin();
	this->shader.setUniform1f("time", ofGetElapsedTimef());
	this->shader.setUniform2f("resolution", ofGetWidth(), ofGetHeight());
	this->shader.setUniformTexture("tex1", this->fbo1.getTexture(), 1);
	this->shader.setUniformTexture("tex2", this->fbo2.getTexture(), 2);

	ofDrawRectangle(glm::vec2(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(239);

ofSetColor(0);

ofEnableDepthTest();

this->fbo1.allocate(ofGetWidth(), ofGetHeight());

this->fbo2.allocate(ofGetWidth(), ofGetHeight());

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

this->box2d.init();

this->box2d.setGravity(0, 50);

this->box2d.createBounds();

this->box2d.setFPS(60);

this->box2d.registerGrabbing();

}

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

void ofApp::update() {

for (int i = this->circle_list.size() - 1; i > -1; i--) {

this->life_list[i] -= 0.75;

if (this->life_list[i] < 0) {

this->circle_list.erase(this->circle_list.begin() + i);

this->radius_list.erase(this->radius_list.begin() + i);

this->life_list.erase(this->life_list.begin() + i);

}

if (ofGetFrameNum() % 10 == 0) {

auto radius = ofRandom(10, 30);

auto circle = make_shared<ofxBox2dCircle>();

circle->setPhysics(0.5, 0.83, 0.1);

circle->setup(this->box2d.getWorld(), ofRandom(ofGetWidth() * 0.5 - radius, ofGetWidth() * 0.5 + radius), radius, radius);

circle->setRotation(ofRandom(360));

this->circle_list.push_back(circle);

this->radius_list.push_back(radius);

this->life_list.push_back(255);

}

this->box2d.update();

this->fbo1.begin();

ofClear(0);

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

ofDrawCircle(glm::vec2(this->circle_list[i]->getPosition()), this->radius_list[i]);

}

this->fbo1.end();

this->fbo2.begin();

ofClear(0);

for (int x = 0; x < ofGetWidth(); x += 120) {

ofDrawRectangle(x, 0, 60, ofGetHeight());

}

this->fbo2.end();

}

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

void ofApp::draw() {

ofFill();

this->shader.begin();

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

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

this->shader.setUniformTexture("tex1", this->fbo1.getTexture(), 1);

this->shader.setUniformTexture("tex2", this->fbo2.getTexture(), 2);

ofDrawRectangle(glm::vec2(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;
in vec2 texcoord;
out vec2 texCoordVarying;

void main(){

	texCoordVarying = texcoord;
	gl_Position = modelViewProjectionMatrix * position;
}

#version 150

uniform mat4 modelViewProjectionMatrix;

in vec4 position;

in vec2 texcoord;

out vec2 texCoordVarying;

void main(){

texCoordVarying = texcoord;

gl_Position = modelViewProjectionMatrix * position;

}

#version 150

uniform float time;
uniform vec2 resolution;
uniform sampler2DRect tex1;
uniform sampler2DRect tex2;

in vec2 texCoordVarying;
out vec4 outputColor;

void main() {

  vec4 t1 = texture(tex1, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));
  vec4 t2 = texture(tex2, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));
  
  vec4 c;
  if(t1 == t2){
  	
  	c = vec4(vec3(0.937), 1.0);
  }else{
  
  	c = vec4(vec3(0.153), 1.0);
  }
  
  outputColor = c;
}

#version 150

uniform float time;

uniform vec2 resolution;

uniform sampler2DRect tex1;

uniform sampler2DRect tex2;

in vec2 texCoordVarying;

out vec4 outputColor;

void main() {

vec4 t1 = texture(tex1, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));

vec4 t2 = texture(tex2, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));

vec4 c;

if(t1 == t2){

c = vec4(vec3(0.937), 1.0);

}else{

c = vec4(vec3(0.153), 1.0);

}

outputColor = c;

}

[ Link ]
https://github.com/junkiyoshi/Insta20201026/

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