RandomWalk – ページ 44 – プログラミング de 落描き

2021年12月25日

Symmetrical ribbons flower. Draw by openFrameworks

[ Video ]

[ About ]
リボンを対称に描写する。

Describe the ribbons symmetrically.

[ 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) {};

	ofEasyCam cam;
	ofMesh face, line;
};

#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) {};

ofEasyCam cam;

ofMesh face, line;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openFrameworks");

	ofBackground(0);
	ofEnableDepthTest();
	ofSetLineWidth(2);

	this->line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
}

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

	ofSeedRandom(39);

	this->face.clear();
	this->line.clear();

	auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));
	int start_index = this->face.getNumVertices();
	for (float x = 128; x < 255; x += 1) {

		float next_x = x + 1;
		int index = this->face.getNumVertices();

		float angle_x = ofMap(ofNoise(noise_seed.x, x * 0.0035 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);
		auto rotation_x = glm::rotate(glm::mat4(), angle_x, glm::vec3(1, 0, 0));

		float angle_y = ofMap(ofNoise(noise_seed.y, x * 0.0035 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);
		auto rotation_y = glm::rotate(glm::mat4(), angle_y, glm::vec3(0, 1, 0));

		float next_angle_x = ofMap(ofNoise(noise_seed.x, next_x * 0.0035 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);
		auto next_rotation_x = glm::rotate(glm::mat4(), next_angle_x, glm::vec3(1, 0, 0));

		float next_angle_y = ofMap(ofNoise(noise_seed.y, next_x * 0.0035 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);
		auto next_rotation_y = glm::rotate(glm::mat4(), next_angle_y, glm::vec3(0, 1, 0));

		vector<glm::vec3> vertices;
		vertices.push_back(glm::vec4(x, 10, 0, 0) * rotation_y * rotation_x);
		vertices.push_back(glm::vec4(next_x, 10, 0, 0)* next_rotation_y* next_rotation_x);
		vertices.push_back(glm::vec4(next_x, -10, 0, 0) * next_rotation_y * next_rotation_x);
		vertices.push_back(glm::vec4(x, -10, 0, 0) * rotation_y * rotation_x);

		this->face.addVertices(vertices);
		this->line.addVertices(vertices);

		auto color = ofColor();
		auto next_color = ofColor();

		color.setHsb(ofMap((int)(x + ofGetFrameNum() * 1) % 128, 1, 128, 0, 255), 180, 255);
		next_color.setHsb(ofMap((int)(next_x + ofGetFrameNum() * 1) % 128, 1, 128, 0, 255), 180, 255);

		this->face.addColor(color);
		this->face.addColor(next_color);
		this->face.addColor(next_color);
		this->face.addColor(color);

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

		this->line.addIndex(index + 0); this->line.addIndex(index + 1);
		this->line.addIndex(index + 2); this->line.addIndex(index + 3);
	}

	this->line.addIndex(start_index + 0); this->line.addIndex(start_index + 3);
	this->line.addIndex(this->line.getNumVertices() - 2); this->line.addIndex(this->line.getNumVertices() - 3);
}

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

	this->cam.begin();
	ofRotateY(270);

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

		ofRotateX(45);

		this->line.drawWireframe();
		this->face.draw();
	}

	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofEnableDepthTest();

ofSetLineWidth(2);

this->line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->line.clear();

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

int start_index = this->face.getNumVertices();

for (float x = 128; x < 255; x += 1) {

float next_x = x + 1;

int index = this->face.getNumVertices();

float angle_x = ofMap(ofNoise(noise_seed.x, x * 0.0035 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);

auto rotation_x = glm::rotate(glm::mat4(), angle_x, glm::vec3(1, 0, 0));

float angle_y = ofMap(ofNoise(noise_seed.y, x * 0.0035 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);

auto rotation_y = glm::rotate(glm::mat4(), angle_y, glm::vec3(0, 1, 0));

float next_angle_x = ofMap(ofNoise(noise_seed.x, next_x * 0.0035 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);

auto next_rotation_x = glm::rotate(glm::mat4(), next_angle_x, glm::vec3(1, 0, 0));

float next_angle_y = ofMap(ofNoise(noise_seed.y, next_x * 0.0035 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);

auto next_rotation_y = glm::rotate(glm::mat4(), next_angle_y, glm::vec3(0, 1, 0));

vector<glm::vec3> vertices;

vertices.push_back(glm::vec4(x, 10, 0, 0) * rotation_y * rotation_x);

vertices.push_back(glm::vec4(next_x, 10, 0, 0)* next_rotation_y* next_rotation_x);

vertices.push_back(glm::vec4(next_x, -10, 0, 0) * next_rotation_y * next_rotation_x);

vertices.push_back(glm::vec4(x, -10, 0, 0) * rotation_y * rotation_x);

this->face.addVertices(vertices);

this->line.addVertices(vertices);

auto color = ofColor();

auto next_color = ofColor();

color.setHsb(ofMap((int)(x + ofGetFrameNum() * 1) % 128, 1, 128, 0, 255), 180, 255);

next_color.setHsb(ofMap((int)(next_x + ofGetFrameNum() * 1) % 128, 1, 128, 0, 255), 180, 255);

this->face.addColor(color);

this->face.addColor(next_color);

this->face.addColor(color);

this->face.addIndex(index + 0); this->face.addIndex(index + 1); this->face.addIndex(index + 2);

this->face.addIndex(index + 0); this->face.addIndex(index + 2); this->face.addIndex(index + 3);

this->line.addIndex(index + 0); this->line.addIndex(index + 1);

this->line.addIndex(index + 2); this->line.addIndex(index + 3);

}

this->line.addIndex(start_index + 0); this->line.addIndex(start_index + 3);

this->line.addIndex(this->line.getNumVertices() - 2); this->line.addIndex(this->line.getNumVertices() - 3);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(270);

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

ofRotateX(45);

this->line.drawWireframe();

this->face.draw();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20211225

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Amazon

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2021年12月20日

Connection bubble. Draw by openFrameworks

[ Video ]

[ About ]
近づいたら円を描く。

Draw a circle when you get close.

[ 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) {};

	ofMesh mesh;
	vector<glm::vec3> circle_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) {};

ofMesh mesh;

vector<glm::vec3> circle_list;

};

#include "ofApp.h"	

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openFrameworks");

	ofBackground(0);

	this->mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
}

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

	ofSeedRandom(39);
	
	this->mesh.clear();
	this->circle_list.clear();
	
	vector<glm::vec2> location_list;
	for (int i = 0; i < 120; i++) {

		auto location = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0035), 0, 1, -300, 300), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0035), 0, 1, -300, 300));
		location_list.push_back(location);
	}

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

		this->circle_list.push_back(glm::vec3(location_list[i], 0));
		auto near_count = 0;
		for (int k = 0; k < location_list.size(); k++) {

			if (i == k) { continue; }

			auto distance = glm::distance(location_list[i], location_list[k]);
			if (distance < 50) {

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

				this->mesh.addIndex(this->mesh.getNumVertices() - 1);
				this->mesh.addIndex(this->mesh.getNumVertices() - 2);

				near_count++;
			}
		}

		this->circle_list.back().z = pow(1.5, near_count);
	}
}

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

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

	ofSetLineWidth(0.5);
	this->mesh.drawWireframe();

	ofSetLineWidth(1.5);
	for (auto& circle : this->circle_list) {

		ofFill();
		ofSetColor(0);
		ofDrawCircle(glm::vec2(circle.x, circle.y), circle.z);

		ofNoFill();
		ofSetColor(255);
		ofDrawCircle(glm::vec2(circle.x, circle.y), circle.z);
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

this->mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

}

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

void ofApp::update() {

ofSeedRandom(39);

this->mesh.clear();

this->circle_list.clear();

vector<glm::vec2> location_list;

for (int i = 0; i < 120; i++) {

auto location = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0035), 0, 1, -300, 300), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0035), 0, 1, -300, 300));

location_list.push_back(location);

}

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

this->circle_list.push_back(glm::vec3(location_list[i], 0));

auto near_count = 0;

for (int k = 0; k < location_list.size(); k++) {

if (i == k) { continue; }

auto distance = glm::distance(location_list[i], location_list[k]);

if (distance < 50) {

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

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

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

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

near_count++;

}

this->circle_list.back().z = pow(1.5, near_count);

}

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

void ofApp::draw() {

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

ofSetLineWidth(0.5);

this->mesh.drawWireframe();

ofSetLineWidth(1.5);

for (auto& circle : this->circle_list) {

ofFill();

ofSetColor(0);

ofDrawCircle(glm::vec2(circle.x, circle.y), circle.z);

ofNoFill();

ofSetColor(255);

ofDrawCircle(glm::vec2(circle.x, circle.y), circle.z);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20211220

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Amazon

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2021年12月19日

Devil sprouts. Draw by openFrameworks

[ Video ]

[ About ]
同じコードでもちょびっと変えるだけで印象が変わる。

Even if you use the same code, changing it just a little will give you a different impression.

[ 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<glm::vec2> base_location_list;
	vector<vector<glm::vec2>> log_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<glm::vec2> base_location_list;

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

};

#include "ofApp.h"	

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openFrameworks");

	ofBackground(0);

	int radius = 15;
	for (float deg = 0; deg < 360; deg += 3) {

		auto location = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
		this->base_location_list.push_back(location);
	}
}

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

	this->log_list.clear();

	int limit = 300;
	for (int i = 0; i < this->base_location_list.size(); i++) {

		vector<glm::vec2> log;
		log.push_back(glm::vec2(this->base_location_list[i]));
		this->log_list.push_back(log);
	}

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

		int k = 0;
		while (true) {

			auto deg = ofMap(ofNoise(glm::vec3(this->log_list[i].back() * 0.003, ofGetFrameNum() * 0.006 + k * 0.0005)), 0, 1, -360, 360);
			auto next = this->log_list[i].back() + glm::vec2(step * cos(deg * DEG_TO_RAD), step * sin(deg * DEG_TO_RAD));

			if (next.x < -limit || next.x > limit || next.y < -limit || next.y > limit) {

				break;
			}
			else {

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

			k++;
		}
	}
}

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

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

	ofSetLineWidth(1.2);
	for (int i = 0; i < this->log_list.size(); i++) {

		if (this->log_list[i].size() > 1) {

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

				ofSetColor(255, ofMap(k, 0, this->log_list[i].size(), 0, 255), ofMap(k, 0, this->log_list[i].size(), 0, 255));
				ofDrawCircle(this->log_list[i][k], 1);
			}
		}
	}

	ofNoFill();
	ofSetLineWidth(0.2);
	ofSetColor(255);
	ofDrawRectangle(-300, -300, 600, 600);

}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

int radius = 15;

for (float deg = 0; deg < 360; deg += 3) {

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

this->base_location_list.push_back(location);

}

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

void ofApp::update() {

this->log_list.clear();

int limit = 300;

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

vector<glm::vec2> log;

log.push_back(glm::vec2(this->base_location_list[i]));

this->log_list.push_back(log);

}

int step = 1;

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

int k = 0;

while (true) {

auto deg = ofMap(ofNoise(glm::vec3(this->log_list[i].back() * 0.003, ofGetFrameNum() * 0.006 + k * 0.0005)), 0, 1, -360, 360);

auto next = this->log_list[i].back() + glm::vec2(step * cos(deg * DEG_TO_RAD), step * sin(deg * DEG_TO_RAD));

if (next.x < -limit || next.x > limit || next.y < -limit || next.y > limit) {

break;

}

else {

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

}

k++;

}

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

void ofApp::draw() {

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

ofSetLineWidth(1.2);

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

if (this->log_list[i].size() > 1) {

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

ofSetColor(255, ofMap(k, 0, this->log_list[i].size(), 0, 255), ofMap(k, 0, this->log_list[i].size(), 0, 255));

ofDrawCircle(this->log_list[i][k], 1);

}

ofNoFill();

ofSetLineWidth(0.2);

ofSetColor(255);

ofDrawRectangle(-300, -300, 600, 600);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20211219

[ほしいものリスト]
Amazon

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2024年5月
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