プログラミング de 落描き – ページ 52 – クリエイティブ・コーディングによる生成物とソース

2024年6月29日2024年6月29日

Incomplete torus.

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不完全トーラス。

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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 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, float scale = 1.0);

	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) {};

glm::vec3 make_point(float R, float r, float u, float v, float scale = 1.0);

ofEasyCam cam;

ofMesh face, line;

};

#include "ofApp.h"

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

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

	ofBackground(39);
	ofEnableDepthTest();

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

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

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

	float phi_deg_step = 1.5;
	float theta_deg_step = 6;

	float R = 250;
	float threshold_1 = 0.55;
	float threshold_2 = 0.65;

	for(float r = R * 0.15; r <= R * 0.45; r += 5){

		for (float phi_deg = 0; phi_deg < 360; phi_deg += phi_deg_step) {

			for (float theta_deg = 0; theta_deg < 360; theta_deg += theta_deg_step) {

				auto noise_value = ofNoise(glm::vec4(this->make_point(R, 100, theta_deg, phi_deg) * 0.0085, r * 0.005 - ofGetFrameNum() * 0.02));
				if (threshold_1 < noise_value < threshold_2) { continue; }

				auto noise_1 = ofNoise(glm::vec4(this->make_point(R, 100,theta_deg - theta_deg_step, phi_deg) * 0.0085, r * 0.005 - ofGetFrameNum() * 0.02));
				auto noise_2 = ofNoise(glm::vec4(this->make_point(R, 100, theta_deg, phi_deg + phi_deg_step) * 0.0085, r * 0.005 - ofGetFrameNum() * 0.02));
				auto noise_3 = ofNoise(glm::vec4(this->make_point(R, 100, theta_deg, phi_deg - phi_deg_step) * 0.0085, r * 0.005 - ofGetFrameNum() * 0.02));
				auto noise_4 = ofNoise(glm::vec4(this->make_point(R, 100, theta_deg + theta_deg_step, phi_deg) * 0.0085, r * 0.005 - ofGetFrameNum() * 0.02));

				auto index = this->face.getNumVertices();
				vector<glm::vec3> vertices;

				vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));
				vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));
				vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));
				vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));

				this->face.addVertices(vertices);

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

				if (threshold_1 < noise_1 < threshold_2) {

					this->line.addVertex(vertices[0]);
					this->line.addVertex(vertices[2]);

					this->line.addIndex(this->line.getNumVertices() - 1);
					this->line.addIndex(this->line.getNumVertices() - 2);
				}

				if (threshold_1 < noise_2 < threshold_2) {

					this->line.addVertex(vertices[2]);
					this->line.addVertex(vertices[3]);

					this->line.addIndex(this->line.getNumVertices() - 1);
					this->line.addIndex(this->line.getNumVertices() - 2);
				}

				if (threshold_1 < noise_3 < threshold_2) {

					this->line.addVertex(vertices[0]);
					this->line.addVertex(vertices[1]);

					this->line.addIndex(this->line.getNumVertices() - 1);
					this->line.addIndex(this->line.getNumVertices() - 2);
				}

				if (threshold_1 < noise_4 < threshold_2) {

					this->line.addVertex(vertices[1]);
					this->line.addVertex(vertices[3]);

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

				}
			}
		}
	}
}

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

	int R = 250;
	int r = R * 0.25;

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 1.44);

	ofSetColor(200);
	this->line.draw();

	ofSetColor(0);
	this->face.draw();

	this->cam.end();

	/*
	int start = 100;
	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);
		}
	}
	*/
}

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

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

	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(25);

ofSetWindowTitle("openframeworks");

ofBackground(39);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

this->face.clear();

this->line.clear();

float phi_deg_step = 1.5;

float theta_deg_step = 6;

float R = 250;

float threshold_1 = 0.55;

float threshold_2 = 0.65;

for(float r = R * 0.15; r <= R * 0.45; r += 5){

for (float phi_deg = 0; phi_deg < 360; phi_deg += phi_deg_step) {

for (float theta_deg = 0; theta_deg < 360; theta_deg += theta_deg_step) {

auto noise_value = ofNoise(glm::vec4(this->make_point(R, 100, theta_deg, phi_deg) * 0.0085, r * 0.005 - ofGetFrameNum() * 0.02));

if (threshold_1 < noise_value < threshold_2) { continue; }

auto noise_1 = ofNoise(glm::vec4(this->make_point(R, 100,theta_deg - theta_deg_step, phi_deg) * 0.0085, r * 0.005 - ofGetFrameNum() * 0.02));

auto noise_2 = ofNoise(glm::vec4(this->make_point(R, 100, theta_deg, phi_deg + phi_deg_step) * 0.0085, r * 0.005 - ofGetFrameNum() * 0.02));

auto noise_3 = ofNoise(glm::vec4(this->make_point(R, 100, theta_deg, phi_deg - phi_deg_step) * 0.0085, r * 0.005 - ofGetFrameNum() * 0.02));

auto noise_4 = ofNoise(glm::vec4(this->make_point(R, 100, theta_deg + theta_deg_step, phi_deg) * 0.0085, r * 0.005 - ofGetFrameNum() * 0.02));

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

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));

this->face.addVertices(vertices);

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

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

if (threshold_1 < noise_1 < threshold_2) {

this->line.addVertex(vertices[0]);

this->line.addVertex(vertices[2]);

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

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

}

if (threshold_1 < noise_2 < threshold_2) {

this->line.addVertex(vertices[2]);

this->line.addVertex(vertices[3]);

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

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

}

if (threshold_1 < noise_3 < threshold_2) {

this->line.addVertex(vertices[0]);

this->line.addVertex(vertices[1]);

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

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

}

if (threshold_1 < noise_4 < threshold_2) {

this->line.addVertex(vertices[1]);

this->line.addVertex(vertices[3]);

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

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

}

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

void ofApp::draw() {

int R = 250;

int r = R * 0.25;

this->cam.begin();

ofRotateY(ofGetFrameNum() * 1.44);

ofSetColor(200);

this->line.draw();

ofSetColor(0);

this->face.draw();

this->cam.end();

int start = 100;

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);

}

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

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

// 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) * scale) * cos(v);

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

auto z = r * sin(u) * scale;

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

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

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2024年6月28日

From torus.

[ Video ]

[ About ]
トーラスの中より。

[ 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, float scale = 1.0);

	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) {};

glm::vec3 make_point(float R, float r, float u, float v, float scale = 1.0);

ofEasyCam cam;

ofMesh face, line;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofEnableDepthTest();

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

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

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

	float phi_deg_step = 1.5;
	float theta_deg_step = 6;

	float R = 250;
	float threshold = 0.55;

	for(float r = R * 0.25; r <= R * 0.5; r += 5){

		for (float phi_deg = 0; phi_deg < 360; phi_deg += phi_deg_step) {

			for (float theta_deg = 0; theta_deg < 360; theta_deg += theta_deg_step) {

				auto noise_value = ofNoise(glm::vec4(this->make_point(R, r, theta_deg, phi_deg) * 0.015, ofGetFrameNum() * 0.02));
				if (noise_value < threshold) { continue; }

				auto noise_1 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg - theta_deg_step, phi_deg) * 0.015, ofGetFrameNum() * 0.02));
				auto noise_2 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg, phi_deg + phi_deg_step) * 0.015, ofGetFrameNum() * 0.02));
				auto noise_3 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg, phi_deg - phi_deg_step) * 0.015, ofGetFrameNum() * 0.02));
				auto noise_4 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg + theta_deg_step, phi_deg) * 0.015, ofGetFrameNum() * 0.02));

				auto index = this->face.getNumVertices();
				vector<glm::vec3> vertices;

				vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));
				vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));
				vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));
				vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));

				this->face.addVertices(vertices);

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

				if (noise_1 < threshold) {

					this->line.addVertex(vertices[0]);
					this->line.addVertex(vertices[2]);

					this->line.addIndex(this->line.getNumVertices() - 1);
					this->line.addIndex(this->line.getNumVertices() - 2);
				}

				if (noise_2 < threshold) {

					this->line.addVertex(vertices[2]);
					this->line.addVertex(vertices[3]);

					this->line.addIndex(this->line.getNumVertices() - 1);
					this->line.addIndex(this->line.getNumVertices() - 2);
				}

				if (noise_3 < threshold) {

					this->line.addVertex(vertices[0]);
					this->line.addVertex(vertices[1]);

					this->line.addIndex(this->line.getNumVertices() - 1);
					this->line.addIndex(this->line.getNumVertices() - 2);
				}

				if (noise_4 < threshold) {

					this->line.addVertex(vertices[1]);
					this->line.addVertex(vertices[3]);

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

				}
			}
		}
	}
}

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

	int R = 250;
	int r = R * 0.25;

	this->cam.begin();
	ofRotateX(90);
	this->cam.setPosition(R, 0, r * 2);

	ofSetLineWidth(3);
	ofSetColor(0);
	this->line.draw();

	ofSetColor(255);
	this->face.draw();

	this->cam.end();

	/*
	int start = 1;
	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);
		}
	}
	*/
}

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

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

	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(25);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

this->face.clear();

this->line.clear();

float phi_deg_step = 1.5;

float theta_deg_step = 6;

float R = 250;

float threshold = 0.55;

for(float r = R * 0.25; r <= R * 0.5; r += 5){

for (float phi_deg = 0; phi_deg < 360; phi_deg += phi_deg_step) {

for (float theta_deg = 0; theta_deg < 360; theta_deg += theta_deg_step) {

auto noise_value = ofNoise(glm::vec4(this->make_point(R, r, theta_deg, phi_deg) * 0.015, ofGetFrameNum() * 0.02));

if (noise_value < threshold) { continue; }

auto noise_1 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg - theta_deg_step, phi_deg) * 0.015, ofGetFrameNum() * 0.02));

auto noise_2 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg, phi_deg + phi_deg_step) * 0.015, ofGetFrameNum() * 0.02));

auto noise_3 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg, phi_deg - phi_deg_step) * 0.015, ofGetFrameNum() * 0.02));

auto noise_4 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg + theta_deg_step, phi_deg) * 0.015, ofGetFrameNum() * 0.02));

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

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));

this->face.addVertices(vertices);

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

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

if (noise_1 < threshold) {

this->line.addVertex(vertices[0]);

this->line.addVertex(vertices[2]);

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

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

}

if (noise_2 < threshold) {

this->line.addVertex(vertices[2]);

this->line.addVertex(vertices[3]);

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

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

}

if (noise_3 < threshold) {

this->line.addVertex(vertices[0]);

this->line.addVertex(vertices[1]);

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

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

}

if (noise_4 < threshold) {

this->line.addVertex(vertices[1]);

this->line.addVertex(vertices[3]);

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

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

}

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

void ofApp::draw() {

int R = 250;

int r = R * 0.25;

this->cam.begin();

ofRotateX(90);

this->cam.setPosition(R, 0, r * 2);

ofSetLineWidth(3);

ofSetColor(0);

this->line.draw();

ofSetColor(255);

this->face.draw();

this->cam.end();

int start = 1;

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);

}

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

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

// 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) * scale) * cos(v);

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

auto z = r * sin(u) * scale;

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

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

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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) {};

	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 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;

};

#include "ofApp.h"	

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

	ofSetFrameRate(25);
	ofSetWindowTitle("openFrameworks");

	ofBackground(0);
	ofSetLineWidth(1.2);
	ofEnableDepthTest();
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();
	//ofRotateX(ofGetFrameNum());
	//ofRotateY(ofGetFrameNum());

	ofColor color;

	ofFill();
	ofSetColor(0);
	ofDrawSphere(245);

	for (int k = 0; k < 20; k++) {

		color.setHsb(ofRandom(255), 255, 255);

		ofPushMatrix();
		ofRotateZ(ofRandom(360));

		auto location = glm::vec3(0, 0, 250);
		auto radius = (int)(ofRandom(1000) + ofGetFrameNum() * 2) % 180 - 100;

		if (radius < 0) {

			auto z = ofMap(radius, -100, 0, 1500, 0);

			ofSetColor(color);
			ofDrawLine(location + glm::vec3(0, 0, z), location + glm::vec3(0, 0, z + 80));
		}
		else {

			ofSetColor(color, radius > 25 ? ofMap(radius, 25, 80, 255, 0) : 255);

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

				auto vertex = location + glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
				vertex = glm::normalize(vertex) * 250;

				ofVertex(vertex);
			}
			ofEndShape(true);

			ofSetColor(color, radius > 25 ? ofMap(radius, 25, 80, 32, 0) : 32);

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

				auto vertex = location + glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
				vertex = glm::normalize(vertex) * 250;

				ofVertex(vertex);
			}
			ofEndShape(true);
		}

		ofPopMatrix();
	}

	this->cam.end();

	int start = 270 + 62;
	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());
}

100

101

102

103

104

105

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetLineWidth(1.2);

ofEnableDepthTest();

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

//ofRotateX(ofGetFrameNum());

//ofRotateY(ofGetFrameNum());

ofColor color;

ofFill();

ofSetColor(0);

ofDrawSphere(245);

for (int k = 0; k < 20; k++) {

color.setHsb(ofRandom(255), 255, 255);

ofPushMatrix();

ofRotateZ(ofRandom(360));

auto location = glm::vec3(0, 0, 250);

auto radius = (int)(ofRandom(1000) + ofGetFrameNum() * 2) % 180 - 100;

if (radius < 0) {

auto z = ofMap(radius, -100, 0, 1500, 0);

ofSetColor(color);

ofDrawLine(location + glm::vec3(0, 0, z), location + glm::vec3(0, 0, z + 80));

}

else {

ofSetColor(color, radius > 25 ? ofMap(radius, 25, 80, 255, 0) : 255);

ofNoFill();

ofBeginShape();

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

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

vertex = glm::normalize(vertex) * 250;

ofVertex(vertex);

}

ofEndShape(true);

ofSetColor(color, radius > 25 ? ofMap(radius, 25, 80, 32, 0) : 32);

ofFill();

ofBeginShape();

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

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

vertex = glm::normalize(vertex) * 250;

ofVertex(vertex);

}

ofEndShape(true);

}

ofPopMatrix();

}

this->cam.end();

int start = 270 + 62;

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/Insta20240627

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