generative line. – プログラミング de 落描き

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生成線。

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#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) {};

	vector<vector<glm::vec2>> log_list;
	vector<glm::vec2> velocity_list;
	vector<ofColor> color_list;

	vector<ofMesh> mesh_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 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) {};

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

vector<glm::vec2> velocity_list;

vector<ofColor> color_list;

vector<ofMesh> mesh_list;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openframeworks");

	ofBackground(239);
	ofSetLineWidth(2);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_SUBTRACT);
}

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

	this->mesh_list.clear();

	int radius = 10;
	ofColor color;

	while (this->log_list.size() < 1500) {

		int deg_base = ofRandom(360);
		int deg = deg_base;

		vector<glm::vec2> log;
		auto location = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
		log.push_back(location);
		auto next = glm::vec2((radius - 10) * cos(deg * DEG_TO_RAD), (radius - 10) * sin(deg * DEG_TO_RAD));

		auto distance = location - next;
		distance *= 1;

		auto future = location + distance * 30;
		auto random_deg = ofRandom(360);
		future += glm::vec2(120 * cos(random_deg * DEG_TO_RAD), 120 * sin(random_deg * DEG_TO_RAD));
		auto future_distance = future - location;

		this->log_list.push_back(log);
		this->velocity_list.push_back(glm::normalize(future_distance) * glm::length(distance) * ofRandom(0.5, 1));
		auto hue = ofGetFrameNum() % 255;
		color.setHsb(hue, 230, 255);
		this->color_list.push_back(color);
	}

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

		auto location = this->log_list[i][this->log_list[i].size() - 1];

		auto deg = atan2(this->velocity_list[i].y, this->velocity_list[i].x) * RAD_TO_DEG;
		deg += ofMap(ofNoise(glm::vec3(location * 0.005, ofGetFrameNum() * 0.01)), 0, 1, -15, 15);
		auto len = glm::length(this->velocity_list[i]);
		location += glm::vec2(len * cos(deg * DEG_TO_RAD), len * sin(deg * DEG_TO_RAD));

		if (glm::distance(glm::vec2(), this->log_list[i][this->log_list[i].size() - 1]) > 1000) {

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

			continue;
		}

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

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

		ofMesh mesh;
		mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

		auto len = glm::length(this->log_list[i][this->log_list[i].size() - 1]);
		for (int k = 0; k < this->log_list[i].size(); k++) {

			mesh.addVertex(glm::vec3(this->log_list[i][k], 0));
			mesh.addColor(ofColor(this->color_list[i], ofMap(len, 0, 1005, 128, 0)));

			if (k > 0) {

				mesh.addIndex(mesh.getNumVertices() - 1);
				mesh.addIndex(mesh.getNumVertices() - 2);
			}
		}

		this->mesh_list.push_back(mesh);
	}
}

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

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

	for (auto& mesh : this->mesh_list) {

		mesh.drawWireframe();
	}

	/*
	int start = 600;
	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());
}

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetLineWidth(2);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_SUBTRACT);

}

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

void ofApp::update() {

this->mesh_list.clear();

int radius = 10;

ofColor color;

while (this->log_list.size() < 1500) {

int deg_base = ofRandom(360);

int deg = deg_base;

vector<glm::vec2> log;

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

log.push_back(location);

auto next = glm::vec2((radius - 10) * cos(deg * DEG_TO_RAD), (radius - 10) * sin(deg * DEG_TO_RAD));

auto distance = location - next;

distance *= 1;

auto future = location + distance * 30;

auto random_deg = ofRandom(360);

future += glm::vec2(120 * cos(random_deg * DEG_TO_RAD), 120 * sin(random_deg * DEG_TO_RAD));

auto future_distance = future - location;

this->log_list.push_back(log);

this->velocity_list.push_back(glm::normalize(future_distance) * glm::length(distance) * ofRandom(0.5, 1));

auto hue = ofGetFrameNum() % 255;

color.setHsb(hue, 230, 255);

this->color_list.push_back(color);

}

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

auto location = this->log_list[i][this->log_list[i].size() - 1];

auto deg = atan2(this->velocity_list[i].y, this->velocity_list[i].x) * RAD_TO_DEG;

deg += ofMap(ofNoise(glm::vec3(location * 0.005, ofGetFrameNum() * 0.01)), 0, 1, -15, 15);

auto len = glm::length(this->velocity_list[i]);

location += glm::vec2(len * cos(deg * DEG_TO_RAD), len * sin(deg * DEG_TO_RAD));

if (glm::distance(glm::vec2(), this->log_list[i][this->log_list[i].size() - 1]) > 1000) {

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

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

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

continue;

}

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

}

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

ofMesh mesh;

mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

auto len = glm::length(this->log_list[i][this->log_list[i].size() - 1]);

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

mesh.addVertex(glm::vec3(this->log_list[i][k], 0));

mesh.addColor(ofColor(this->color_list[i], ofMap(len, 0, 1005, 128, 0)));

if (k > 0) {

mesh.addIndex(mesh.getNumVertices() - 1);

mesh.addIndex(mesh.getNumVertices() - 2);

}

this->mesh_list.push_back(mesh);

}

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

void ofApp::draw() {

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

for (auto& mesh : this->mesh_list) {

mesh.drawWireframe();

}

int start = 600;

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/Insta20250227

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