2026年2月16日 – プログラミング de 落描き

[ Video ]

[ About ]
透明な三角形。

[ 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;
};

#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;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(39);
	ofSetLineWidth(2);
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();

	ofRotateZ(ofRandom(360) + ofGetFrameNum() * ofRandom(1, 3));
	ofRotateY(ofRandom(360) + ofGetFrameNum() * ofRandom(1, 3));
	ofRotateX(ofRandom(360) + ofGetFrameNum() * ofRandom(1, 3));

	ofMesh mesh;
	auto param = 130;
	glm::vec3 avg;
	float noise_value;

	vector<glm::vec3> vertices;
	vertices.push_back(glm::vec4(param, param, param, 0));
	vertices.push_back(glm::vec4(param, -param, -param, 0));
	vertices.push_back(glm::vec4(-param, param, -param, 0));
	vertices.push_back(glm::vec4(-param, -param, param, 0));

	avg = (vertices[0] + vertices[1] + vertices[2]) / 3;
	noise_value = ofNoise(glm::vec4(avg * 0.0085, ofGetFrameNum() * 0.05));
	noise_value = noise_value < 0.5 ? 0 : ofMap(noise_value, 0.5, 1, 0, 10);

	mesh.addVertex(vertices[0] + avg * noise_value);
	mesh.addVertex(vertices[1] + avg * noise_value);
	mesh.addVertex(vertices[2] + avg * noise_value);

	ofDrawLine(glm::vec3(), avg + avg * noise_value);
	ofDrawBox(avg + avg * noise_value, 5);

	avg = (vertices[0] + vertices[1] + vertices[3]) / 3;
	noise_value = ofNoise(glm::vec4(avg * 0.0085, ofGetFrameNum() * 0.05));
	noise_value = noise_value < 0.5 ? 0 : ofMap(noise_value, 0.5, 1, 0, 10);

	mesh.addVertex(vertices[0] + avg * noise_value);
	mesh.addVertex(vertices[1] + avg * noise_value);
	mesh.addVertex(vertices[3] + avg * noise_value);

	ofDrawLine(glm::vec3(), avg + avg * noise_value);
	ofDrawBox(avg + avg * noise_value, 5);

	avg = (vertices[0] + vertices[2] + vertices[3]) / 3;
	noise_value = ofNoise(glm::vec4(avg * 0.0085, ofGetFrameNum() * 0.05));
	noise_value = noise_value < 0.5 ? 0 : ofMap(noise_value, 0.5, 1, 0, 10);

	mesh.addVertex(vertices[0] + avg * noise_value);
	mesh.addVertex(vertices[2] + avg * noise_value);
	mesh.addVertex(vertices[3] + avg * noise_value);

	ofDrawLine(glm::vec3(), avg + avg * noise_value);
	ofDrawBox(avg + avg * noise_value, 5);

	avg = (vertices[1] + vertices[2] + vertices[3]) / 3;
	noise_value = ofNoise(glm::vec4(avg * 0.0085, ofGetFrameNum() * 0.05));
	noise_value = noise_value < 0.5 ? 0 : ofMap(noise_value, 0.5, 1, 0, 5);

	mesh.addVertex(vertices[1] + avg * noise_value);
	mesh.addVertex(vertices[2] + avg * noise_value);
	mesh.addVertex(vertices[3] + avg * noise_value);

	ofDrawLine(glm::vec3(), avg + avg * noise_value);
	ofDrawBox(avg + avg * noise_value, 5);

	mesh.drawWireframe();

	for (auto& vertex : mesh.getVertices()) {

		ofDrawSphere(vertex, 10);
	}
	ofDrawSphere(glm::vec3(), 10);

	this->cam.end();

	/*
	// ffmpeg -i img_%04d.jpg aaa.mp4
	int start = 500;
	if (ofGetFrameNum() > start) {

		std::ostringstream os;
		os << std::setw(4) << std::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());
}

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

ofSetLineWidth(2);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateZ(ofRandom(360) + ofGetFrameNum() * ofRandom(1, 3));

ofRotateY(ofRandom(360) + ofGetFrameNum() * ofRandom(1, 3));

ofRotateX(ofRandom(360) + ofGetFrameNum() * ofRandom(1, 3));

ofMesh mesh;

auto param = 130;

glm::vec3 avg;

float noise_value;

vector<glm::vec3> vertices;

vertices.push_back(glm::vec4(param, param, param, 0));

vertices.push_back(glm::vec4(param, -param, -param, 0));

vertices.push_back(glm::vec4(-param, param, -param, 0));

vertices.push_back(glm::vec4(-param, -param, param, 0));

avg = (vertices[0] + vertices[1] + vertices[2]) / 3;

noise_value = ofNoise(glm::vec4(avg * 0.0085, ofGetFrameNum() * 0.05));

noise_value = noise_value < 0.5 ? 0 : ofMap(noise_value, 0.5, 1, 0, 10);

mesh.addVertex(vertices[0] + avg * noise_value);

mesh.addVertex(vertices[1] + avg * noise_value);

mesh.addVertex(vertices[2] + avg * noise_value);

ofDrawLine(glm::vec3(), avg + avg * noise_value);

ofDrawBox(avg + avg * noise_value, 5);

avg = (vertices[0] + vertices[1] + vertices[3]) / 3;

noise_value = ofNoise(glm::vec4(avg * 0.0085, ofGetFrameNum() * 0.05));

noise_value = noise_value < 0.5 ? 0 : ofMap(noise_value, 0.5, 1, 0, 10);

mesh.addVertex(vertices[0] + avg * noise_value);

mesh.addVertex(vertices[1] + avg * noise_value);

mesh.addVertex(vertices[3] + avg * noise_value);

ofDrawLine(glm::vec3(), avg + avg * noise_value);

ofDrawBox(avg + avg * noise_value, 5);

avg = (vertices[0] + vertices[2] + vertices[3]) / 3;

noise_value = ofNoise(glm::vec4(avg * 0.0085, ofGetFrameNum() * 0.05));

noise_value = noise_value < 0.5 ? 0 : ofMap(noise_value, 0.5, 1, 0, 10);

mesh.addVertex(vertices[0] + avg * noise_value);

mesh.addVertex(vertices[2] + avg * noise_value);

mesh.addVertex(vertices[3] + avg * noise_value);

ofDrawLine(glm::vec3(), avg + avg * noise_value);

ofDrawBox(avg + avg * noise_value, 5);

avg = (vertices[1] + vertices[2] + vertices[3]) / 3;

noise_value = ofNoise(glm::vec4(avg * 0.0085, ofGetFrameNum() * 0.05));

noise_value = noise_value < 0.5 ? 0 : ofMap(noise_value, 0.5, 1, 0, 5);

mesh.addVertex(vertices[1] + avg * noise_value);

mesh.addVertex(vertices[2] + avg * noise_value);

mesh.addVertex(vertices[3] + avg * noise_value);

ofDrawLine(glm::vec3(), avg + avg * noise_value);

ofDrawBox(avg + avg * noise_value, 5);

mesh.drawWireframe();

for (auto& vertex : mesh.getVertices()) {

ofDrawSphere(vertex, 10);

}

ofDrawSphere(glm::vec3(), 10);

this->cam.end();

// ffmpeg -i img_%04d.jpg aaa.mp4

int start = 500;

if (ofGetFrameNum() > start) {

std::ostringstream os;

os << std::setw(4) << std::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/DoodleDeProgramming/tree/fc12b5ccc8e6cc887d67f71dd9dd0db766360479

日: 2026年2月16日

Clear triangle.

2026年2月
月	火	水	木	金	土	日
						1
2	3	4	5	6	7	8
9	10	11	12	13	14	15
16	17	18	19	20	21	22
23	24	25	26	27	28