openFrameworks – ページ 378 – プログラミング de 落描き

2021年10月14日2021年10月14日

1 to 2, 2 to 1. Draw by openFrameworks

[ Video ]

[ About ]
ofFboをテキスチャにしてofMeshへバインドする。
ofMeshの座標を回転させて遊ぶ。

Texture the ofFbo and bind it to the ofMesh.
Play with the coordinates ofMesh by rotating it.

[ 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 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) {};

	ofEasyCam cam;
	vector<ofPixels> pixcels_list;

	ofTrueTypeFont font;
	int font_size;

	vector<vector<ofMesh>> face_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) {};

ofEasyCam cam;

vector<ofPixels> pixcels_list;

ofTrueTypeFont font;

int font_size;

vector<vector<ofMesh>> face_list;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openframeworks");

	ofBackground(239);
	ofSetLineWidth(2);
	ofEnableDepthTest();
	ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);

	this->font_size = 195;
	ofTrueTypeFontSettings font_settings("fonts/msgothic.ttc", this->font_size);
	font_settings.antialiased = true;
	font_settings.addRanges(ofAlphabet::Japanese);
	this->font.load(font_settings);

	ofFbo fbo;
	ofPixels pixcels;
	fbo.allocate(320, 320);

	fbo.begin();

	ofClear(0);
	ofBackground(0);
	ofTranslate(fbo.getWidth() * 0.5, fbo.getHeight() * 0.5);

	ofSetColor(255);
	this->font.drawString(u8"壱", -130, 90);

	ofNoFill();
	ofDrawRectangle(glm::vec2(0, 0), 300, 300);

	fbo.end();
	
	fbo.readToPixels(pixcels);
	this->pixcels_list.push_back(pixcels);

	fbo.begin();

	ofClear(0);
	ofBackground(0);
	ofTranslate(fbo.getWidth() * 0.5, fbo.getHeight() * 0.5);

	ofSetColor(255);
	this->font.drawString(u8"零", -130, 90);

	ofNoFill();
	ofDrawRectangle(glm::vec2(0, 0), 300, 300);

	fbo.end();

	fbo.readToPixels(pixcels);
	this->pixcels_list.push_back(pixcels);
}

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

	this->face_list.clear();

	int x_span = 20;
	int y_span = 5;

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

		vector<ofMesh> mesh_list;
		for (int x = 0; x < 320; x += x_span) {

			ofMesh mesh;
			for (int y = 0; y < 320; y += y_span) {

				int index = mesh.getNumVertices();

				float z = -160;

				vector<glm::vec3> vertices;
				vertices.push_back(glm::vec3(x, y, z) - glm::vec3(160, 160, 0));
				vertices.push_back(glm::vec3(x + x_span, y, z) - glm::vec3(160, 160, 0));
				vertices.push_back(glm::vec3(x + x_span, y + y_span, z) - glm::vec3(160, 160, 0));
				vertices.push_back(glm::vec3(x, y + y_span, z) - glm::vec3(160, 160, 0));

				auto deg = (x / 3 + ofGetFrameNum()) % 360;
				if (deg < 90) { deg = 0; }
				else if (deg < 180) { deg = ofMap(deg, 90, 180, 0, 180); }
				else if (deg < 270) { deg = 180; }
				else if (deg < 360) { deg = ofMap(deg, 270, 360, 180, 360); }

				deg += i * 180;

				auto rotation_x = glm::rotate(glm::mat4(), deg * (float)DEG_TO_RAD, glm::vec3(1, 0, 0));
				for (auto& vertex : vertices) {

					vertex = glm::vec4(vertex, 0) * rotation_x;
				}

				mesh.addVertices(vertices);

				mesh.addTexCoord(glm::vec3(x, y, 0));
				mesh.addTexCoord(glm::vec3(x + x_span, y, 0));
				mesh.addTexCoord(glm::vec3(x + x_span, y + y_span, 0));
				mesh.addTexCoord(glm::vec3(x, y + y_span, 0));

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

			mesh_list.push_back(mesh);
		}

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

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

	this->cam.begin();
	ofRotateX(180);

	int i = 0;
	for (auto& mesh_list : this->face_list) {

		ofImage image;
		image.setFromPixels(this->pixcels_list[i++]);

		for (auto& mesh : mesh_list) {

			image.bind();
			mesh.draw();
			image.unbind();
		}
	}

	this->cam.end();
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetLineWidth(2);

ofEnableDepthTest();

ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);

this->font_size = 195;

ofTrueTypeFontSettings font_settings("fonts/msgothic.ttc", this->font_size);

font_settings.antialiased = true;

font_settings.addRanges(ofAlphabet::Japanese);

this->font.load(font_settings);

ofFbo fbo;

ofPixels pixcels;

fbo.allocate(320, 320);

fbo.begin();

ofClear(0);

ofBackground(0);

ofTranslate(fbo.getWidth() * 0.5, fbo.getHeight() * 0.5);

ofSetColor(255);

this->font.drawString(u8"壱", -130, 90);

ofNoFill();

ofDrawRectangle(glm::vec2(0, 0), 300, 300);

fbo.end();

fbo.readToPixels(pixcels);

this->pixcels_list.push_back(pixcels);

fbo.begin();

ofClear(0);

ofBackground(0);

ofTranslate(fbo.getWidth() * 0.5, fbo.getHeight() * 0.5);

ofSetColor(255);

this->font.drawString(u8"零", -130, 90);

ofNoFill();

ofDrawRectangle(glm::vec2(0, 0), 300, 300);

fbo.end();

fbo.readToPixels(pixcels);

this->pixcels_list.push_back(pixcels);

}

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

void ofApp::update() {

this->face_list.clear();

int x_span = 20;

int y_span = 5;

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

vector<ofMesh> mesh_list;

for (int x = 0; x < 320; x += x_span) {

ofMesh mesh;

for (int y = 0; y < 320; y += y_span) {

int index = mesh.getNumVertices();

float z = -160;

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(x, y, z) - glm::vec3(160, 160, 0));

vertices.push_back(glm::vec3(x + x_span, y, z) - glm::vec3(160, 160, 0));

vertices.push_back(glm::vec3(x + x_span, y + y_span, z) - glm::vec3(160, 160, 0));

vertices.push_back(glm::vec3(x, y + y_span, z) - glm::vec3(160, 160, 0));

auto deg = (x / 3 + ofGetFrameNum()) % 360;

if (deg < 90) { deg = 0; }

else if (deg < 180) { deg = ofMap(deg, 90, 180, 0, 180); }

else if (deg < 270) { deg = 180; }

else if (deg < 360) { deg = ofMap(deg, 270, 360, 180, 360); }

deg += i * 180;

auto rotation_x = glm::rotate(glm::mat4(), deg * (float)DEG_TO_RAD, glm::vec3(1, 0, 0));

for (auto& vertex : vertices) {

vertex = glm::vec4(vertex, 0) * rotation_x;

}

mesh.addVertices(vertices);

mesh.addTexCoord(glm::vec3(x, y, 0));

mesh.addTexCoord(glm::vec3(x + x_span, y, 0));

mesh.addTexCoord(glm::vec3(x + x_span, y + y_span, 0));

mesh.addTexCoord(glm::vec3(x, y + y_span, 0));

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

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

}

mesh_list.push_back(mesh);

}

this->face_list.push_back(mesh_list);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(180);

int i = 0;

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

ofImage image;

image.setFromPixels(this->pixcels_list[i++]);

for (auto& mesh : mesh_list) {

image.bind();

mesh.draw();

image.unbind();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20211014

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2021年10月13日

Circle to twisted circle. Draw by openFrameworks

[ Video ]

[ About ]
大きな円と座標をねじった小さい円を線でつなぐ。

Connect a large circle and a small circle with twisted coordinates with a line.

[ 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) {};

};

#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) {};

};

#include "ofApp.h"	

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

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

	ofBackground(239);
	ofSetColor(39);
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

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

	int radius = 80;
	bool flag = true;
	for (int x = -225; x <= 225; x += 225) {

		for (int y = -225; y <= 225; y += 225) {

			ofPushMatrix();
			ofTranslate(x, y);

			float noise_seed_x = ofRandom(1000);
			float noise_seed_y = ofRandom(1000);
			float noise_seed_z = ofRandom(1000);
			for (int deg = 0; deg < 360; deg += 10) {

				auto location_1 = glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0);
				auto location_2 = glm::vec3(radius * 0.3 * cos(deg * DEG_TO_RAD), radius * 0.3 * sin(deg * DEG_TO_RAD), 0);

				auto rotation_z = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed_z, location_1.x * 0.0015, location_1.y * 0.0015, ofGetFrameNum() * 0.005), 0, 1, -PI * 2, PI * 2), glm::vec3(0, 0, 1));
				auto rotation_y = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed_y, location_1.x * 0.0015, location_1.y * 0.0015, ofGetFrameNum() * 0.005), 0, 1, -PI * 2, PI * 2), glm::vec3(0, 1, 0));
				auto rotation_x = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed_x, location_1.x * 0.0015, location_1.x * 0.0015, ofGetFrameNum() * 0.005), 0, 1, -PI * 2, PI * 2), glm::vec3(1, 0, 0));
				

				if (true) {

					location_2 = glm::vec4(location_2, 0) * rotation_y * rotation_x;
				}
				else {

					location_1 = glm::vec4(location_1, 0) * rotation_y * rotation_x;
				}

				ofDrawLine(location_1, location_2);

				ofDrawCircle(location_1, 3);
				ofDrawCircle(location_2, 2);
			}

			ofPopMatrix();

			flag = !flag;
		}
	}
}


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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetColor(39);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

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

int radius = 80;

bool flag = true;

for (int x = -225; x <= 225; x += 225) {

for (int y = -225; y <= 225; y += 225) {

ofPushMatrix();

ofTranslate(x, y);

float noise_seed_x = ofRandom(1000);

float noise_seed_y = ofRandom(1000);

float noise_seed_z = ofRandom(1000);

for (int deg = 0; deg < 360; deg += 10) {

auto location_1 = glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0);

auto location_2 = glm::vec3(radius * 0.3 * cos(deg * DEG_TO_RAD), radius * 0.3 * sin(deg * DEG_TO_RAD), 0);

auto rotation_z = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed_z, location_1.x * 0.0015, location_1.y * 0.0015, ofGetFrameNum() * 0.005), 0, 1, -PI * 2, PI * 2), glm::vec3(0, 0, 1));

auto rotation_y = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed_y, location_1.x * 0.0015, location_1.y * 0.0015, ofGetFrameNum() * 0.005), 0, 1, -PI * 2, PI * 2), glm::vec3(0, 1, 0));

auto rotation_x = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed_x, location_1.x * 0.0015, location_1.x * 0.0015, ofGetFrameNum() * 0.005), 0, 1, -PI * 2, PI * 2), glm::vec3(1, 0, 0));

if (true) {

location_2 = glm::vec4(location_2, 0) * rotation_y * rotation_x;

}

else {

location_1 = glm::vec4(location_1, 0) * rotation_y * rotation_x;

}

ofDrawLine(location_1, location_2);

ofDrawCircle(location_1, 3);

ofDrawCircle(location_2, 2);

}

ofPopMatrix();

flag = !flag;

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20211013

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2021年10月12日2021年10月12日

Walker from circle to square. Draw by openFrameworks

[ Video ]

[ About ]
円から出発して外周の四角に突き当たるまで進むランダムウォーカー。

A random walker that starts from a circle and proceeds until it hits the outer square.

[ 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(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(0);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

	int radius = 100;
	for (float deg = 0; deg < 360; deg += 10) {

		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() * 0.0035, ofGetFrameNum() * 0.003 + 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) {

			ofNoFill();
			ofSetColor(39, 39, 239);
			ofBeginShape();
			ofVertices(this->log_list[i]);
			ofEndShape();

			ofFill();
			ofSetColor(255);
			ofDrawCircle(this->log_list[i].back(), 3);
			ofSetColor(39, 39, 239);
			ofDrawCircle(this->log_list[i].front(), 3);
		}
	}

	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(60);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

int radius = 100;

for (float deg = 0; deg < 360; deg += 10) {

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() * 0.0035, ofGetFrameNum() * 0.003 + 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) {

ofNoFill();

ofSetColor(39, 39, 239);

ofBeginShape();

ofVertices(this->log_list[i]);

ofEndShape();

ofFill();

ofSetColor(255);

ofDrawCircle(this->log_list[i].back(), 3);

ofSetColor(39, 39, 239);

ofDrawCircle(this->log_list[i].front(), 3);

}

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/Insta20211012

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