openFrameworks – ページ 12 – プログラミング de 落描き

2025年3月17日2025年3月17日

Layer of sphere.

[ Video ]

[ About ]
球の層。

[ 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 mesh, draw_mesh;

	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) {};

ofEasyCam cam;

ofMesh mesh, draw_mesh;

float noise_param;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofEnableDepthTest();

	auto ico_sphere = ofIcoSpherePrimitive(250, 7);
	this->mesh = ico_sphere.getMesh();
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();
	ofRotateX(-27);

	ofSeedRandom(39);

	ofColor color;
	auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

	for (int radius = 200; radius <= 260; radius += 30) {

		this->draw_mesh.clear();
		this->noise_param = 0.0005;

		noise_seed -= glm::vec3(0.015, 0.015, 0.015);

		for (int i = 0; i < this->mesh.getNumVertices(); i++) {

			auto noise_value = ofMap(ofNoise(
				noise_seed.x + this->mesh.getVertex(i).x * this->noise_param,
				noise_seed.y + this->mesh.getVertex(i).y * this->noise_param,
				noise_seed.z + this->mesh.getVertex(i).z * this->noise_param,
				ofGetFrameNum() * 0.015), 0, 1, 0, 10);
			int int_noise_value = (int)noise_value;

			int hue = ofMap(noise_value, 0, 10, 0, 512);
			hue = hue % 256;

			noise_value = noise_value - int_noise_value;
			auto alpha = 0.f;
			if (abs(noise_value - 0.5) > 0.35) {

				if (abs(noise_value - 0.5) > 0.45) {

					alpha = 255;
				}
				else {

					alpha = ofMap(abs(noise_value - 0.5), 0.35, 0.45, 0, 255);
				}
			}
			color = ofColor(0, alpha);
			auto vertex = this->mesh.getVertex(i);
			vertex = glm::normalize(vertex) * radius;

			this->draw_mesh.addVertex(vertex);
			this->draw_mesh.addColor(color);
		}

		this->draw_mesh.addIndices(this->mesh.getIndices());
		this->draw_mesh.draw();
	}

	this->cam.end();

	/*
	int start = 60;
	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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofEnableDepthTest();

auto ico_sphere = ofIcoSpherePrimitive(250, 7);

this->mesh = ico_sphere.getMesh();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(-27);

ofSeedRandom(39);

ofColor color;

auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

for (int radius = 200; radius <= 260; radius += 30) {

this->draw_mesh.clear();

this->noise_param = 0.0005;

noise_seed -= glm::vec3(0.015, 0.015, 0.015);

for (int i = 0; i < this->mesh.getNumVertices(); i++) {

auto noise_value = ofMap(ofNoise(

noise_seed.x + this->mesh.getVertex(i).x * this->noise_param,

noise_seed.y + this->mesh.getVertex(i).y * this->noise_param,

noise_seed.z + this->mesh.getVertex(i).z * this->noise_param,

ofGetFrameNum() * 0.015), 0, 1, 0, 10);

int int_noise_value = (int)noise_value;

int hue = ofMap(noise_value, 0, 10, 0, 512);

hue = hue % 256;

noise_value = noise_value - int_noise_value;

auto alpha = 0.f;

if (abs(noise_value - 0.5) > 0.35) {

if (abs(noise_value - 0.5) > 0.45) {

alpha = 255;

}

else {

alpha = ofMap(abs(noise_value - 0.5), 0.35, 0.45, 0, 255);

}

color = ofColor(0, alpha);

auto vertex = this->mesh.getVertex(i);

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

this->draw_mesh.addVertex(vertex);

this->draw_mesh.addColor(color);

}

this->draw_mesh.addIndices(this->mesh.getIndices());

this->draw_mesh.draw();

}

this->cam.end();

int start = 60;

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/Insta20250317

2025年3月16日

Ray.

[ Video ]

[ About ]
光線。

[ Source ]

#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) {};

	ofMesh mesh;
	float noise_step;
};

#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) {};

ofMesh mesh;

float noise_step;

};

#include "ofApp.h"

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

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

	ofBackground(39);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
}

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

	if (ofGetFrameNum() % 50 < 40) {

		this->noise_step += ofMap(ofGetFrameNum() % 50, 0, 40, 0.2, 0.005);
	}
	else {

		this->noise_step += 0.005;
	}

	this->mesh.clear();

	ofSeedRandom(39);

	float span = 0.5;
	ofColor color;
	for (int i = 0; i < 4; i++) {

		auto noise_seed = ofRandom(1000);
		for (float x = 0; x < 720; x += span) {

			for (float y = 0; y < 720; y += span) {

				float noise_value = ofNoise(noise_seed, x * 0.002, y * 0.002, glm::distance(glm::vec2(360, 360), glm::vec2(x, y)) * 0.005 - this->noise_step);
				if (noise_value > 0.4 && noise_value < 0.6) {

					this->mesh.addVertex(glm::vec3(x, y, 0));
					this->mesh.addVertex(glm::vec3(x + span, y, 0));
					this->mesh.addVertex(glm::vec3(x + span, y + span, 0));
					this->mesh.addVertex(glm::vec3(x, y + span, 0));

					this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(this->mesh.getNumVertices() - 4); this->mesh.addIndex(this->mesh.getNumVertices() - 3);
					this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(this->mesh.getNumVertices() - 2); this->mesh.addIndex(this->mesh.getNumVertices() - 3);

					auto alpha = 0;
					if (noise_value >= 0.5) {

						alpha = ofMap(noise_value, 0.5, 0.6, 255, 0);
					}
					else {

						alpha = ofMap(noise_value, 0.4, 0.5, 0, 255);
					}

					color.setHsb(ofMap(i, 0, 4, 0, 255), 200, 200, alpha);
					for (int k = 0; k < 4; k++) {

						this->mesh.addColor(color);
					}
				}
			}
		}
	}
}

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

	this->mesh.draw();

	/*
	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);
		}
	}
	*/
	*/
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openFrameworks");

ofBackground(39);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

}

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

void ofApp::update() {

if (ofGetFrameNum() % 50 < 40) {

this->noise_step += ofMap(ofGetFrameNum() % 50, 0, 40, 0.2, 0.005);

}

else {

this->noise_step += 0.005;

}

this->mesh.clear();

ofSeedRandom(39);

float span = 0.5;

ofColor color;

for (int i = 0; i < 4; i++) {

auto noise_seed = ofRandom(1000);

for (float x = 0; x < 720; x += span) {

for (float y = 0; y < 720; y += span) {

float noise_value = ofNoise(noise_seed, x * 0.002, y * 0.002, glm::distance(glm::vec2(360, 360), glm::vec2(x, y)) * 0.005 - this->noise_step);

if (noise_value > 0.4 && noise_value < 0.6) {

this->mesh.addVertex(glm::vec3(x, y, 0));

this->mesh.addVertex(glm::vec3(x + span, y, 0));

this->mesh.addVertex(glm::vec3(x + span, y + span, 0));

this->mesh.addVertex(glm::vec3(x, y + span, 0));

this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(this->mesh.getNumVertices() - 4); this->mesh.addIndex(this->mesh.getNumVertices() - 3);

this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(this->mesh.getNumVertices() - 2); this->mesh.addIndex(this->mesh.getNumVertices() - 3);

auto alpha = 0;

if (noise_value >= 0.5) {

alpha = ofMap(noise_value, 0.5, 0.6, 255, 0);

}

else {

alpha = ofMap(noise_value, 0.4, 0.5, 0, 255);

}

color.setHsb(ofMap(i, 0, 4, 0, 255), 200, 200, alpha);

for (int k = 0; k < 4; k++) {

this->mesh.addColor(color);

}

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

void ofApp::draw() {

this->mesh.draw();

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);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20250316

2025年3月15日

Neuron.

[ Video ]

[ About ]
神経細胞。

[ Source ]

#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) {};

	ofMesh mesh;
	float noise_step;
};

#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) {};

ofMesh mesh;

float noise_step;

};

[ Link ]
https://github.com/junkiyoshi/Insta20250315

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