junkiyoshi – ページ 99 – プログラミング de 落描き

2023年7月23日

Missing torus. Draw by openFrameworks

[ Video ]

[ About ]
欠損トーラス。

[ 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::vec3 make_point(float R, float r, float u, float v);

	ofEasyCam cam;
	float 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) {};

glm::vec3 make_point(float R, float r, float u, float v);

ofEasyCam cam;

float noise_param;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(3);
	ofEnableDepthTest();

	this->noise_param = ofRandom(1000);
}

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

	ofSeedRandom(39);

	if (ofGetFrameNum() % 60 < 30) {

		this->noise_param += ofMap(ofGetFrameNum() % 30, 0, 30, 0.2, 0.0001);
	}
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 2);

	int R = 235;
	int r = 60;
	int v_span = 5;
	int u_span = 10;

	ofMesh face, line;
	line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

	ofColor face_color = ofColor(255);
	ofColor line_color = ofColor(0);

	for (int v = 0; v < 360; v += v_span) {

		for (int u = 0; u < 360; u += u_span) {

			auto noise_value = ofNoise(glm::vec4(this->make_point(R, 100, u, v) * 0.003, this->noise_param));
			auto param = noise_value > 0.45 ? noise_value < 0.55 ? ofMap(noise_value, 0.45, 0.55, 1, 0) : 0 : 1;
			auto v_size = v_span * param;
			auto u_size = u_span * param;

			face.addVertex(this->make_point(R, r, u - u_size * 0.5, v - v_size * 0.5));
			face.addVertex(this->make_point(R, r, u + u_size * 0.5, v - v_size * 0.5));
			face.addVertex(this->make_point(R, r, u + u_size * 0.5, v + v_size * 0.5));
			face.addVertex(this->make_point(R, r, u - u_size * 0.5, v + v_size * 0.5));

			line.addVertex(this->make_point(R, r, u - u_size * 0.5, v - v_size * 0.5));
			line.addVertex(this->make_point(R, r, u + u_size * 0.5, v - v_size * 0.5));
			line.addVertex(this->make_point(R, r, u + u_size * 0.5, v + v_size * 0.5));
			line.addVertex(this->make_point(R, r, u - u_size * 0.5, v + v_size * 0.5));

			face.addColor(face_color);
			face.addColor(face_color);
			face.addColor(face_color);
			face.addColor(face_color);

			line.addColor(line_color);
			line.addColor(line_color);
			line.addColor(line_color);
			line.addColor(line_color);

			face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2); face.addIndex(face.getNumVertices() - 3);
			face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 3); face.addIndex(face.getNumVertices() - 4);

			line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 4);
			line.addIndex(line.getNumVertices() - 2); line.addIndex(line.getNumVertices() - 3);

			line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 2);
			line.addIndex(line.getNumVertices() - 3); line.addIndex(line.getNumVertices() - 4);

		}
	}

	face.drawFaces();
	line.drawWireframe();

	this->cam.end();
}

//--------------------------------------------------------------
glm::vec3 ofApp::make_point(float R, float r, float u, float v) {

	// 数学デッサン教室 描いて楽しむ数学たち　P.31

	u *= DEG_TO_RAD;
	v *= DEG_TO_RAD;

	auto x = (R + r * cos(u)) * cos(v);
	auto y = (R + r * cos(u)) * sin(v);
	auto z = r * sin(u);

	return glm::vec3(x, y, z);
}

//--------------------------------------------------------------
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(3);

ofEnableDepthTest();

this->noise_param = ofRandom(1000);

}

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

void ofApp::update() {

ofSeedRandom(39);

if (ofGetFrameNum() % 60 < 30) {

this->noise_param += ofMap(ofGetFrameNum() % 30, 0, 30, 0.2, 0.0001);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 2);

int R = 235;

int r = 60;

int v_span = 5;

int u_span = 10;

ofMesh face, line;

line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

ofColor face_color = ofColor(255);

ofColor line_color = ofColor(0);

for (int v = 0; v < 360; v += v_span) {

for (int u = 0; u < 360; u += u_span) {

auto noise_value = ofNoise(glm::vec4(this->make_point(R, 100, u, v) * 0.003, this->noise_param));

auto param = noise_value > 0.45 ? noise_value < 0.55 ? ofMap(noise_value, 0.45, 0.55, 1, 0) : 0 : 1;

auto v_size = v_span * param;

auto u_size = u_span * param;

face.addVertex(this->make_point(R, r, u - u_size * 0.5, v - v_size * 0.5));

face.addVertex(this->make_point(R, r, u + u_size * 0.5, v - v_size * 0.5));

face.addVertex(this->make_point(R, r, u + u_size * 0.5, v + v_size * 0.5));

face.addVertex(this->make_point(R, r, u - u_size * 0.5, v + v_size * 0.5));

line.addVertex(this->make_point(R, r, u - u_size * 0.5, v - v_size * 0.5));

line.addVertex(this->make_point(R, r, u + u_size * 0.5, v - v_size * 0.5));

line.addVertex(this->make_point(R, r, u + u_size * 0.5, v + v_size * 0.5));

line.addVertex(this->make_point(R, r, u - u_size * 0.5, v + v_size * 0.5));

face.addColor(face_color);

line.addColor(line_color);

face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2); face.addIndex(face.getNumVertices() - 3);

face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 3); face.addIndex(face.getNumVertices() - 4);

line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 4);

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

line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 2);

line.addIndex(line.getNumVertices() - 3); line.addIndex(line.getNumVertices() - 4);

}

face.drawFaces();

line.drawWireframe();

this->cam.end();

}

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

glm::vec3 ofApp::make_point(float R, float r, float u, float v) {

// 数学デッサン教室描いて楽しむ数学たち　P.31

u *= DEG_TO_RAD;

v *= DEG_TO_RAD;

auto x = (R + r * cos(u)) * cos(v);

auto y = (R + r * cos(u)) * sin(v);

auto z = r * sin(u);

return glm::vec3(x, y, z);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20230723

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2023年7月22日

Torsion Bits. Draw by openFrameworks

[ Video ]

[ About ]
ねじれビット。

[ 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;
	string word;
};

#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;

string word;

};

#include "ofApp.h"	

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

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

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

	this->font.loadFont("fonts/Kazesawa-Bold.ttf", 50, true, true, true);
	this->word = "01";
}

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


}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	ofSeedRandom(39);
	for (int x = -500; x <= 450; x += 50){

		for (int y = -400; y <= 450; y += 50) {

			auto location = glm::vec3(x, y, 100);
			int word_index = ofMap(ofNoise(location.x * 0.005, location.y * 0.005, ofGetFrameNum() * 0.1), 0, 1, 0, this->word.size());

			ofPath chara_path = this->font.getCharacterAsPoints(this->word[word_index], true, false);
			vector<ofPolyline> outline = chara_path.getOutline();

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

				ofNextContour(true);

				outline[outline_index] = outline[outline_index].getResampledByCount(50);
				auto vertices = outline[outline_index].getVertices();
				for (auto& vertex : vertices) {

					glm::vec3 v = location + vertex;
					auto rotate_deg = ofMap(ofNoise(glm::length(v) * 0.002 - ofGetFrameNum() * 0.01), 0, 1, -360, 360);
					auto rotation = glm::rotate(glm::mat4(), rotate_deg * (float)DEG_TO_RAD, glm::vec3(1, 1, 1));
					v = glm::vec4(v, 0) * rotation;
					ofVertex(v);
				}
			}
			ofEndShape(true);

			ofNoFill();
			ofSetColor(255);
			ofBeginShape();
			for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

				ofNextContour(true);

				outline[outline_index] = outline[outline_index].getResampledByCount(50);
				auto vertices = outline[outline_index].getVertices();
				for (auto& vertex : vertices) {

					glm::vec3 v = location + vertex;
					auto rotate_deg = ofMap(ofNoise(glm::length(v) * 0.002 - ofGetFrameNum() * 0.01), 0, 1, -360, 360);
					auto rotation = glm::rotate(glm::mat4(), rotate_deg * (float)DEG_TO_RAD, glm::vec3(1, 1, 1));
					v = glm::vec4(v, 0) * rotation;
					ofVertex(v);
				}
			}
			ofEndShape(true);
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetLineWidth(2);

ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);

this->font.loadFont("fonts/Kazesawa-Bold.ttf", 50, true, true, true);

this->word = "01";

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

ofSeedRandom(39);

for (int x = -500; x <= 450; x += 50){

for (int y = -400; y <= 450; y += 50) {

auto location = glm::vec3(x, y, 100);

int word_index = ofMap(ofNoise(location.x * 0.005, location.y * 0.005, ofGetFrameNum() * 0.1), 0, 1, 0, this->word.size());

ofPath chara_path = this->font.getCharacterAsPoints(this->word[word_index], true, false);

vector<ofPolyline> outline = chara_path.getOutline();

ofFill();

ofSetColor(0);

ofBeginShape();

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

ofNextContour(true);

outline[outline_index] = outline[outline_index].getResampledByCount(50);

auto vertices = outline[outline_index].getVertices();

for (auto& vertex : vertices) {

glm::vec3 v = location + vertex;

auto rotate_deg = ofMap(ofNoise(glm::length(v) * 0.002 - ofGetFrameNum() * 0.01), 0, 1, -360, 360);

auto rotation = glm::rotate(glm::mat4(), rotate_deg * (float)DEG_TO_RAD, glm::vec3(1, 1, 1));

v = glm::vec4(v, 0) * rotation;

ofVertex(v);

}

ofEndShape(true);

ofNoFill();

ofSetColor(255);

ofBeginShape();

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

ofNextContour(true);

outline[outline_index] = outline[outline_index].getResampledByCount(50);

auto vertices = outline[outline_index].getVertices();

for (auto& vertex : vertices) {

glm::vec3 v = location + vertex;

auto rotate_deg = ofMap(ofNoise(glm::length(v) * 0.002 - ofGetFrameNum() * 0.01), 0, 1, -360, 360);

auto rotation = glm::rotate(glm::mat4(), rotate_deg * (float)DEG_TO_RAD, glm::vec3(1, 1, 1));

v = glm::vec4(v, 0) * rotation;

ofVertex(v);

}

ofEndShape(true);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20230722

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2023年7月21日

Rotating letter. Draw by openFrameworks

[ Video ]

[ About ]
回転文字。

[ 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;
	string word;
};

#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;

string word;

};

#include "ofApp.h"	

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

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

	ofBackground(39);
	ofSetLineWidth(2);
	ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);

	this->font.loadFont("fonts/Kazesawa-Bold.ttf", 45, true, true, true);
	this->word = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
}

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


}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	ofSeedRandom(39);
	for (int x = -250; x <= 225; x += 50){

		for (int y = -200; y <= 225; y += 50) {

			auto location = glm::vec3(x, y, 0);
			int word_index = ofMap(ofNoise(location.x * 0.005, location.y * 0.005, ofGetFrameNum() * 0.005), 0, 1, 0, this->word.size());

			ofPath chara_path = this->font.getCharacterAsPoints(this->word[word_index], true, false);
			vector<ofPolyline> outline = chara_path.getOutline();

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

				ofNextContour(true);

				outline[outline_index] = outline[outline_index].getResampledByCount(100);
				auto vertices = outline[outline_index].getVertices();
				for (auto& vertex : vertices) {

					float rotate_deg = 0;

					glm::vec3 v = location + vertex;
					auto rotation = glm::rotate(glm::mat4(), rotate_deg * (float)DEG_TO_RAD, glm::vec3(0, 0, 1));
					v = glm::vec4(v, 0) * rotation;

					rotate_deg = ofMap(ofNoise(glm::length(v) * 0.0025 - ofGetFrameNum() * 0.0085), 0, 1, -360, 360);
					rotation = glm::rotate(glm::mat4(), rotate_deg * (float)DEG_TO_RAD, glm::vec3(0, 0, 1));
					v = glm::vec4(v, 0) * rotation;

					ofVertex(v);
				}
			}
			ofEndShape(true);

			ofNoFill();
			ofSetColor(255);
			ofBeginShape();
			for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

				ofNextContour(true);

				outline[outline_index] = outline[outline_index].getResampledByCount(100);
				auto vertices = outline[outline_index].getVertices();
				for (auto& vertex : vertices) {

					float rotate_deg = 0;

					glm::vec3 v = location + vertex;
					auto rotation = glm::rotate(glm::mat4(), rotate_deg * (float)DEG_TO_RAD, glm::vec3(0, 0, 1));
					v = glm::vec4(v, 0) * rotation;

					rotate_deg = ofMap(ofNoise(glm::length(v) * 0.0025 - ofGetFrameNum() * 0.0085), 0, 1, -360, 360);
					rotation = glm::rotate(glm::mat4(), rotate_deg * (float)DEG_TO_RAD, glm::vec3(0, 0, 1));
					v = glm::vec4(v, 0) * rotation;

					ofVertex(v);
				}
			}
			ofEndShape(true);
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(39);

ofSetLineWidth(2);

ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);

this->font.loadFont("fonts/Kazesawa-Bold.ttf", 45, true, true, true);

this->word = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

ofSeedRandom(39);

for (int x = -250; x <= 225; x += 50){

for (int y = -200; y <= 225; y += 50) {

auto location = glm::vec3(x, y, 0);

int word_index = ofMap(ofNoise(location.x * 0.005, location.y * 0.005, ofGetFrameNum() * 0.005), 0, 1, 0, this->word.size());

ofPath chara_path = this->font.getCharacterAsPoints(this->word[word_index], true, false);

vector<ofPolyline> outline = chara_path.getOutline();

ofFill();

ofSetColor(0);

ofBeginShape();

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

ofNextContour(true);

outline[outline_index] = outline[outline_index].getResampledByCount(100);

auto vertices = outline[outline_index].getVertices();

for (auto& vertex : vertices) {

float rotate_deg = 0;

glm::vec3 v = location + vertex;

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

v = glm::vec4(v, 0) * rotation;

rotate_deg = ofMap(ofNoise(glm::length(v) * 0.0025 - ofGetFrameNum() * 0.0085), 0, 1, -360, 360);

rotation = glm::rotate(glm::mat4(), rotate_deg * (float)DEG_TO_RAD, glm::vec3(0, 0, 1));

v = glm::vec4(v, 0) * rotation;

ofVertex(v);

}

ofEndShape(true);

ofNoFill();

ofSetColor(255);

ofBeginShape();

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

ofNextContour(true);

outline[outline_index] = outline[outline_index].getResampledByCount(100);

auto vertices = outline[outline_index].getVertices();

for (auto& vertex : vertices) {

float rotate_deg = 0;

glm::vec3 v = location + vertex;

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

v = glm::vec4(v, 0) * rotation;

rotate_deg = ofMap(ofNoise(glm::length(v) * 0.0025 - ofGetFrameNum() * 0.0085), 0, 1, -360, 360);

rotation = glm::rotate(glm::mat4(), rotate_deg * (float)DEG_TO_RAD, glm::vec3(0, 0, 1));

v = glm::vec4(v, 0) * rotation;

ofVertex(v);

}

ofEndShape(true);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20230721

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