プログラミング de 落描き – ページ 155 – クリエイティブ・コーディングによる生成物とソース

2024年4月7日

Gradations.

[ Video ]

[ About ]
グラデーションず。

[ 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) {};

	glm::vec2 make_point(int len, int param);

	vector<glm::vec3> param_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) {};

glm::vec2 make_point(int len, int param);

vector<glm::vec3> param_list;

};

#include "ofApp.h"

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

	ofSetFrameRate(25);
	ofSetWindowTitle("openframeworks");

	ofBackground(239);

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

		this->param_list.push_back(glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000)));
	}
}

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

}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	auto len = 25;
	ofColor color;

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

		auto head_size = j == 0 ? 18 : 10;
		for (int k = 0; k < this->param_list.size(); k++) {

			ofPushMatrix();

			ofMesh mesh;
			vector<glm::vec3> right, left;

			glm::vec3 last_location;
			float last_theta, last_radius;

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

				auto noise_deg = ofMap(ofNoise(this->param_list[k].x, (ofGetFrameNum() + i) * 0.006), 0, 1, -360, 360);
				auto noise_radius = ofMap(ofNoise(this->param_list[k].y, (ofGetFrameNum() + i) * 0.0085), 0, 1, -320, 320);
				auto next_noise_deg = ofMap(ofNoise(this->param_list[k].x, (ofGetFrameNum() + i + 1) * 0.006), 0, 1, -360, 360);
				auto next_noise_radius = ofMap(ofNoise(this->param_list[k].y, (ofGetFrameNum() + i + 1) * 0.0085), 0, 1, -320, 320);

				auto location = glm::vec3(noise_radius * cos(noise_deg * DEG_TO_RAD), noise_radius * sin(noise_deg * DEG_TO_RAD), 0);
				auto next = glm::vec3(next_noise_radius * cos(next_noise_deg * DEG_TO_RAD), next_noise_radius * sin(next_noise_deg * DEG_TO_RAD), 0);

				auto direction = next - location;
				auto theta = atan2(direction.y, direction.x);

				right.push_back(location + glm::vec3(ofMap(i, 0, len, 0, head_size) * cos(theta + PI * 0.5), ofMap(i, 0, 25, 0, head_size) * sin(theta + PI * 0.5), 0));
				left.push_back(location + glm::vec3(ofMap(i, 0, len, 0, head_size) * cos(theta - PI * 0.5), ofMap(i, 0, 25, 0, head_size) * sin(theta - PI * 0.5), 0));

				last_location = location;
				last_theta = theta;
				last_radius = noise_radius;
			}

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

				if (j == 0) {

					color = ofColor(39);
				}
				else {

					color.setHsb(ofMap(i, 0, right.size(),  k * 42, k * 42 + 31), 150, 255);
				}

				mesh.addVertex(left[i]);
				mesh.addVertex(right[i]);
				
				mesh.addColor(color);
				mesh.addColor(color);
			}

			for (int i = 0; i < mesh.getNumVertices() - 2; i += 2) {

				mesh.addIndex(i + 0); mesh.addIndex(i + 1); mesh.addIndex(i + 3);
				mesh.addIndex(i + 0); mesh.addIndex(i + 2); mesh.addIndex(i + 3);
			}

			auto tmp_head_size = ofMap(mesh.getNumVertices() - 2, 0, mesh.getNumVertices(), 0, head_size);

			mesh.addVertex(last_location);
			mesh.addColor(color);
			int index = mesh.getNumVertices();
			for (auto theta = last_theta - PI * 0.5; theta <= last_theta + PI * 0.5; theta += PI / 20) {

				mesh.addVertex(last_location + glm::vec3(tmp_head_size * cos(theta), tmp_head_size * sin(theta), 0));
				mesh.addColor(color);
			}

			for (int i = index; i < mesh.getNumVertices() - 1; i++) {

				mesh.addIndex(index); mesh.addIndex(i + 0); mesh.addIndex(i + 1);
			}

			if (abs(last_radius) < 2) { this->param_list[k].z += 0.1; }


			int span = 2;
			int deg_span = 360 / span;
			for (int i = 0; i < span; i++) {

				ofRotate(deg_span);
				mesh.draw();
			}

			ofPopMatrix();
		}
		head_size -= 3;
	}

	/*
	int start = 75;
	if (ofGetFrameNum() > start) {

		ostringstream os;
		os << setw(4) << setfill('0') << ofGetFrameNum() - start;
		ofImage image;
		image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());
		image.saveImage("image/cap/img_" + os.str() + ".jpg");
		if (ofGetFrameNum() - start >= 25 * 20) {

			std::exit(1);
		}
	}
	*/
}

//--------------------------------------------------------------
glm::vec2 ofApp::make_point(int len, int param) {

	param = param % 100;
	if (param < 25) {

		return glm::vec2(ofMap(param, 0, 25, -len * 0.5, len * 0.5), -len * 0.5);
	}
	else if (param < 50) {

		return glm::vec2(len * 0.5, ofMap(param, 25, 50, -len * 0.5, len * 0.5));
	}
	else if (param < 75) {

		return glm::vec2(ofMap(param, 50, 75, len * 0.5, -len * 0.5), len * 0.5);
	}
	else {

		return glm::vec2(-len * 0.5, ofMap(param, 75, 100, len * 0.5, -len * 0.5));
	}
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openframeworks");

ofBackground(239);

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

this->param_list.push_back(glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000)));

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

auto len = 25;

ofColor color;

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

auto head_size = j == 0 ? 18 : 10;

for (int k = 0; k < this->param_list.size(); k++) {

ofPushMatrix();

ofMesh mesh;

vector<glm::vec3> right, left;

glm::vec3 last_location;

float last_theta, last_radius;

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

auto noise_deg = ofMap(ofNoise(this->param_list[k].x, (ofGetFrameNum() + i) * 0.006), 0, 1, -360, 360);

auto noise_radius = ofMap(ofNoise(this->param_list[k].y, (ofGetFrameNum() + i) * 0.0085), 0, 1, -320, 320);

auto next_noise_deg = ofMap(ofNoise(this->param_list[k].x, (ofGetFrameNum() + i + 1) * 0.006), 0, 1, -360, 360);

auto next_noise_radius = ofMap(ofNoise(this->param_list[k].y, (ofGetFrameNum() + i + 1) * 0.0085), 0, 1, -320, 320);

auto location = glm::vec3(noise_radius * cos(noise_deg * DEG_TO_RAD), noise_radius * sin(noise_deg * DEG_TO_RAD), 0);

auto next = glm::vec3(next_noise_radius * cos(next_noise_deg * DEG_TO_RAD), next_noise_radius * sin(next_noise_deg * DEG_TO_RAD), 0);

auto direction = next - location;

auto theta = atan2(direction.y, direction.x);

right.push_back(location + glm::vec3(ofMap(i, 0, len, 0, head_size) * cos(theta + PI * 0.5), ofMap(i, 0, 25, 0, head_size) * sin(theta + PI * 0.5), 0));

left.push_back(location + glm::vec3(ofMap(i, 0, len, 0, head_size) * cos(theta - PI * 0.5), ofMap(i, 0, 25, 0, head_size) * sin(theta - PI * 0.5), 0));

last_location = location;

last_theta = theta;

last_radius = noise_radius;

}

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

if (j == 0) {

color = ofColor(39);

}

else {

color.setHsb(ofMap(i, 0, right.size(), k * 42, k * 42 + 31), 150, 255);

}

mesh.addVertex(left[i]);

mesh.addVertex(right[i]);

mesh.addColor(color);

}

for (int i = 0; i < mesh.getNumVertices() - 2; i += 2) {

mesh.addIndex(i + 0); mesh.addIndex(i + 1); mesh.addIndex(i + 3);

mesh.addIndex(i + 0); mesh.addIndex(i + 2); mesh.addIndex(i + 3);

}

auto tmp_head_size = ofMap(mesh.getNumVertices() - 2, 0, mesh.getNumVertices(), 0, head_size);

mesh.addVertex(last_location);

mesh.addColor(color);

int index = mesh.getNumVertices();

for (auto theta = last_theta - PI * 0.5; theta <= last_theta + PI * 0.5; theta += PI / 20) {

mesh.addVertex(last_location + glm::vec3(tmp_head_size * cos(theta), tmp_head_size * sin(theta), 0));

mesh.addColor(color);

}

for (int i = index; i < mesh.getNumVertices() - 1; i++) {

mesh.addIndex(index); mesh.addIndex(i + 0); mesh.addIndex(i + 1);

}

if (abs(last_radius) < 2) { this->param_list[k].z += 0.1; }

int span = 2;

int deg_span = 360 / span;

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

ofRotate(deg_span);

mesh.draw();

}

ofPopMatrix();

}

head_size -= 3;

}

int start = 75;

if (ofGetFrameNum() > start) {

ostringstream os;

os << setw(4) << setfill('0') << ofGetFrameNum() - start;

ofImage image;

image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());

image.saveImage("image/cap/img_" + os.str() + ".jpg");

if (ofGetFrameNum() - start >= 25 * 20) {

std::exit(1);

}

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

glm::vec2 ofApp::make_point(int len, int param) {

param = param % 100;

if (param < 25) {

return glm::vec2(ofMap(param, 0, 25, -len * 0.5, len * 0.5), -len * 0.5);

}

else if (param < 50) {

return glm::vec2(len * 0.5, ofMap(param, 25, 50, -len * 0.5, len * 0.5));

}

else if (param < 75) {

return glm::vec2(ofMap(param, 50, 75, len * 0.5, -len * 0.5), len * 0.5);

}

else {

return glm::vec2(-len * 0.5, ofMap(param, 75, 100, len * 0.5, -len * 0.5));

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20240407

2024年4月6日2024年4月6日

Grow line.

[ Video ]

[ About ]
伸びる線。

[ 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) {};

	vector<vector<glm::vec2>> log_list;
	vector<glm::vec2> velocity_list;
	vector<float> speed_list;
	vector<float> life_list;
	vector<ofColor> color_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) {};

vector<vector<glm::vec2>> log_list;

vector<glm::vec2> velocity_list;

vector<float> speed_list;

vector<float> life_list;

vector<ofColor> color_list;

};

#include "ofApp.h"

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

	ofSetFrameRate(25);
	ofSetWindowTitle("openframeworks");

	ofBackground(39);
	ofNoFill();
	ofSetLineWidth(0.5);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
}

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

	ofColor color;
	for (int i = 0; i < 600; i++) {

		auto deg = ofRandom(360);
		auto location = glm::vec2(300 * cos(deg * DEG_TO_RAD), 300 * sin(deg * DEG_TO_RAD));
		auto next = glm::vec2(299 * cos(deg * DEG_TO_RAD), 299 * sin(deg * DEG_TO_RAD));

		vector<glm::vec2> log;
		log.push_back(location);
		
		this->log_list.push_back(log);

		this->velocity_list.push_back(next - location);
		this->life_list.push_back(25);
		this->speed_list.push_back(ofRandom(5, 10));

		color.setHsb(ofMap(deg, 0, 360, 0, 255), 200, 230);
		this->color_list.push_back(color);
	}

	for (int i = this->log_list.size() - 1; i >= 0; i--) {

		auto fueture = glm::normalize(this->velocity_list[i]) * 15;
		auto deg = ofMap(ofNoise(glm::vec3(this->log_list[i].back() * 0.001, ofGetFrameNum() * 0.005)), 0, 1, -360, 360);
		fueture = fueture + glm::vec2(10 * cos(deg * DEG_TO_RAD), 10 * sin(deg * DEG_TO_RAD));
		fueture = this->log_list[i].back() + glm::normalize(fueture) * this->speed_list[i];
		this->log_list[i].push_back(fueture);

		this->life_list[i] -= 1;

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

			this->log_list.erase(this->log_list.begin() + i);
			this->velocity_list.erase(this->velocity_list.begin() + i);
			this->speed_list.erase(this->speed_list.begin() + i);
			this->life_list.erase(this->life_list.begin() + i);
			this->color_list.erase(this->color_list.begin() + i);
		}
	}
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

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

		ofSetColor(this->color_list[i], ofMap(this->life_list[i], 0, 10, 32, 255));

		ofBeginShape();
		ofVertices(this->log_list[i]);
		ofEndShape();
	}
	
	/*
	int start = 200;
	if (ofGetFrameNum() > start) {

		ostringstream os;
		os << setw(4) << setfill('0') << ofGetFrameNum() - start;
		ofImage image;
		image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());
		image.saveImage("image/cap/img_" + os.str() + ".jpg");
		if (ofGetFrameNum() - start >= 25 * 20) {

			std::exit(1);
		}
	}
	*/
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openframeworks");

ofBackground(39);

ofNoFill();

ofSetLineWidth(0.5);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

}

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

void ofApp::update() {

ofColor color;

for (int i = 0; i < 600; i++) {

auto deg = ofRandom(360);

auto location = glm::vec2(300 * cos(deg * DEG_TO_RAD), 300 * sin(deg * DEG_TO_RAD));

auto next = glm::vec2(299 * cos(deg * DEG_TO_RAD), 299 * sin(deg * DEG_TO_RAD));

vector<glm::vec2> log;

log.push_back(location);

this->log_list.push_back(log);

this->velocity_list.push_back(next - location);

this->life_list.push_back(25);

this->speed_list.push_back(ofRandom(5, 10));

color.setHsb(ofMap(deg, 0, 360, 0, 255), 200, 230);

this->color_list.push_back(color);

}

for (int i = this->log_list.size() - 1; i >= 0; i--) {

auto fueture = glm::normalize(this->velocity_list[i]) * 15;

auto deg = ofMap(ofNoise(glm::vec3(this->log_list[i].back() * 0.001, ofGetFrameNum() * 0.005)), 0, 1, -360, 360);

fueture = fueture + glm::vec2(10 * cos(deg * DEG_TO_RAD), 10 * sin(deg * DEG_TO_RAD));

fueture = this->log_list[i].back() + glm::normalize(fueture) * this->speed_list[i];

this->log_list[i].push_back(fueture);

this->life_list[i] -= 1;

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

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

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

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

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

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

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

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

ofSetColor(this->color_list[i], ofMap(this->life_list[i], 0, 10, 32, 255));

ofBeginShape();

ofVertices(this->log_list[i]);

ofEndShape();

}

int start = 200;

if (ofGetFrameNum() > start) {

ostringstream os;

os << setw(4) << setfill('0') << ofGetFrameNum() - start;

ofImage image;

image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());

image.saveImage("image/cap/img_" + os.str() + ".jpg");

if (ofGetFrameNum() - start >= 25 * 20) {

std::exit(1);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20240406

2024年4月5日2024年4月5日

Shadow.

[ Video ]

[ About ]
影。

[ 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) {};

	vector<vector<glm::vec2>> log_list;
	vector<glm::vec2> velocity_list;
	vector<float> speed_list;
	vector<float> life_list;
	vector<ofColor> color_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) {};

vector<vector<glm::vec2>> log_list;

vector<glm::vec2> velocity_list;

vector<float> speed_list;

vector<float> life_list;

vector<ofColor> color_list;

};

#include "ofApp.h"

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

	ofSetFrameRate(25);
	ofSetWindowTitle("openframeworks");

	ofBackground(239);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_SUBTRACT);
}

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

	ofColor color;
	for (int i = 0; i < 150; i++) {

		auto deg = ofRandom(360);
		auto location = glm::vec2(200 * cos(deg * DEG_TO_RAD), 200 * sin(deg * DEG_TO_RAD));
		auto next = glm::vec2(201 * cos(deg * DEG_TO_RAD), 201 * sin(deg * DEG_TO_RAD));

		vector<glm::vec2> log;
		log.push_back(location);

		this->log_list.push_back(log);
		if (ofRandom(100) < 50) {

			this->velocity_list.push_back(next - location);
		}
		else {

			this->velocity_list.push_back(location - next);
		}
		this->speed_list.push_back(ofRandom(5, 10));
		this->life_list.push_back(15);

		this->color_list.push_back(ofColor(100));
	}

	for (int i = this->log_list.size() - 1; i >= 0; i--) {

		auto fueture = glm::normalize(this->velocity_list[i]) * 30;
		auto deg = ofMap(ofNoise(glm::vec3(this->log_list[i].back() * 0.01, ofGetFrameNum() * 0.005)), 0, 1, -360, 360);
		fueture = fueture + glm::vec2(10 * cos(deg * DEG_TO_RAD), 10 * sin(deg * DEG_TO_RAD));
		fueture = this->log_list[i].back() + glm::normalize(fueture) * this->speed_list[i];
		this->log_list[i].push_back(fueture);

		this->life_list[i] -= 1;

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

			this->log_list.erase(this->log_list.begin() + i);
			this->velocity_list.erase(this->velocity_list.begin() + i);
			this->speed_list.erase(this->speed_list.begin() + i);
			this->life_list.erase(this->life_list.begin() + i);
			this->color_list.erase(this->color_list.begin() + i);
		}
	}
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

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

		ofSetColor(this->color_list[i], ofMap(this->life_list[i], 0, 15, 32, 255));
		
		ofBeginShape();
		ofVertices(this->log_list[i]);
		ofEndShape();
	}

	/*
	int start = 150;
	if (ofGetFrameNum() > start) {

		ostringstream os;
		os << setw(4) << setfill('0') << ofGetFrameNum() - start;
		ofImage image;
		image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());
		image.saveImage("image/cap/img_" + os.str() + ".jpg");
		if (ofGetFrameNum() - start >= 25 * 20) {

			std::exit(1);
		}
	}
	*/
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_SUBTRACT);

}

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

void ofApp::update() {

ofColor color;

for (int i = 0; i < 150; i++) {

auto deg = ofRandom(360);

auto location = glm::vec2(200 * cos(deg * DEG_TO_RAD), 200 * sin(deg * DEG_TO_RAD));

auto next = glm::vec2(201 * cos(deg * DEG_TO_RAD), 201 * sin(deg * DEG_TO_RAD));

vector<glm::vec2> log;

log.push_back(location);

this->log_list.push_back(log);

if (ofRandom(100) < 50) {

this->velocity_list.push_back(next - location);

}

else {

this->velocity_list.push_back(location - next);

}

this->speed_list.push_back(ofRandom(5, 10));

this->life_list.push_back(15);

this->color_list.push_back(ofColor(100));

}

for (int i = this->log_list.size() - 1; i >= 0; i--) {

auto fueture = glm::normalize(this->velocity_list[i]) * 30;

auto deg = ofMap(ofNoise(glm::vec3(this->log_list[i].back() * 0.01, ofGetFrameNum() * 0.005)), 0, 1, -360, 360);

fueture = fueture + glm::vec2(10 * cos(deg * DEG_TO_RAD), 10 * sin(deg * DEG_TO_RAD));

fueture = this->log_list[i].back() + glm::normalize(fueture) * this->speed_list[i];

this->log_list[i].push_back(fueture);

this->life_list[i] -= 1;

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

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

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

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

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

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

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

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

ofSetColor(this->color_list[i], ofMap(this->life_list[i], 0, 15, 32, 255));

ofBeginShape();

ofVertices(this->log_list[i]);

ofEndShape();

}

int start = 150;

if (ofGetFrameNum() > start) {

ostringstream os;

os << setw(4) << setfill('0') << ofGetFrameNum() - start;

ofImage image;

image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());

image.saveImage("image/cap/img_" + os.str() + ".jpg");

if (ofGetFrameNum() - start >= 25 * 20) {

std::exit(1);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20240405

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