プログラミング de 落描き – ページ 427 – クリエイティブ・コーディングによる生成物とソース

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/

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2020年10月25日2020年10月25日

Outline of a character. Draw by openFrameworks

[ Video ]

[ About ]
文字の輪郭。

Outline of a character.

[ 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) {};

	ofTrueTypeFont font;
};

#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) {};

ofTrueTypeFont font;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(39);
	ofSetLineWidth(2);

	this->font.loadFont("fonts/Kazesawa-Bold.ttf", 280, true, true, true);
}

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

	ofSeedRandom(39);
}

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

	vector<string> word_list = {
		"XYZ"
	};

	vector<glm::vec2> base_location_list = {
		glm::vec2(ofGetWidth() * 0.5 - this->font.stringWidth(word_list[0]) * 0.5, ofGetHeight() * 0.5 + this->font.stringHeight(word_list[0]) * 0.5)
	};

	for (int i = 0; i < word_list.size(); i++) {

		auto word = word_list[i];
		auto base_location = base_location_list[i];

		int sample_count = 180;
		vector<ofPath> word_path = this->font.getStringAsPoints(word, true, false);

		for (int word_index = 0; word_index < word_path.size(); word_index++) {

			vector<ofPolyline> outline = word_path[word_index].getOutline();
			for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

				outline[outline_index] = outline[outline_index].getResampledByCount(sample_count);
				vector<glm::vec3> vertices = outline[outline_index].getVertices();
				for (int k = 0; k < 100; k++) {

					auto index_start = (int)ofRandom(vertices.size());
					auto speed = ofRandom(0.25, 0.8);
					auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));

					ofNoFill();
					ofBeginShape();
					for (int m = 0; m < 8; m++) {

						int index = (int)(index_start + (ofGetFrameNum() + m) * speed) % vertices.size();
						auto noise_location = glm::vec2(ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + m) * 0.03), 0, 1, -15, 15), ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + m) * 0.03), 0, 1, -15, 15));
	
						ofVertex(vertices[index] + base_location + noise_location);

						if (m == 7) { 
						
							ofFill();
							ofDrawCircle(vertices[index] + base_location + noise_location, 3);
							ofNoFill();
						}
					}
					ofEndShape();
				}
			}
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetColor(39);

ofSetLineWidth(2);

this->font.loadFont("fonts/Kazesawa-Bold.ttf", 280, true, true, true);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

vector<string> word_list = {

"XYZ"

};

vector<glm::vec2> base_location_list = {

glm::vec2(ofGetWidth() * 0.5 - this->font.stringWidth(word_list[0]) * 0.5, ofGetHeight() * 0.5 + this->font.stringHeight(word_list[0]) * 0.5)

};

for (int i = 0; i < word_list.size(); i++) {

auto word = word_list[i];

auto base_location = base_location_list[i];

int sample_count = 180;

vector<ofPath> word_path = this->font.getStringAsPoints(word, true, false);

for (int word_index = 0; word_index < word_path.size(); word_index++) {

vector<ofPolyline> outline = word_path[word_index].getOutline();

for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

outline[outline_index] = outline[outline_index].getResampledByCount(sample_count);

vector<glm::vec3> vertices = outline[outline_index].getVertices();

for (int k = 0; k < 100; k++) {

auto index_start = (int)ofRandom(vertices.size());

auto speed = ofRandom(0.25, 0.8);

auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));

ofNoFill();

ofBeginShape();

for (int m = 0; m < 8; m++) {

int index = (int)(index_start + (ofGetFrameNum() + m) * speed) % vertices.size();

auto noise_location = glm::vec2(ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + m) * 0.03), 0, 1, -15, 15), ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + m) * 0.03), 0, 1, -15, 15));

ofVertex(vertices[index] + base_location + noise_location);

if (m == 7) {

ofFill();

ofDrawCircle(vertices[index] + base_location + noise_location, 3);

ofNoFill();

}

ofEndShape();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20201025

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