プログラミング de 落描き – ページ 246 – クリエイティブ・コーディングによる生成物とソース

2022年4月14日

Arrows growing from circles. Draw by openFrameworks

[ Video ]

[ About ]
円から生える矢印。

Arrows growing from circles.

[ 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) {};

	void draw_arrow(glm::vec2 location, glm::vec2 target, float size);

	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 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) {};

void draw_arrow(glm::vec2 location, glm::vec2 target, float size);

float noise_param;

};

#include "ofApp.h"

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

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

	ofBackground(255);
	ofSetLineWidth(2);
	ofSetCircleResolution(60);
}

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

	ofSeedRandom(39);

	if (ofGetFrameNum() % 60 < 35) {

		this->noise_param += ofMap(ofGetFrameNum() % 60, 0, 35, 0.1, 0);
	}
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	for (float radius = 80; radius <= 360; radius += 120) {

		ofSetColor(0);
		ofNoFill();
		ofDrawCircle(glm::vec2(), radius);

		for (int deg = 0; deg < 360; deg += 3) {

			auto base_location = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
			auto noise_value = ofNoise(glm::vec3(cos(deg * DEG_TO_RAD) * 6, sin(deg * DEG_TO_RAD) * 6, radius + this->noise_param));


			auto noise_radius = radius;

			if (noise_value < 0.4) { noise_radius = ofMap(noise_value, 0, 0.4, radius * 0.85, radius); }
			if (noise_value > 0.6) { noise_radius = ofMap(noise_value, 0.6, 1, radius, radius * 1.35); }

			this->draw_arrow(base_location, glm::vec2(noise_radius * cos(deg * DEG_TO_RAD), noise_radius * sin(deg * DEG_TO_RAD)), radius / 15);
		}
	}
}

//--------------------------------------------------------------
void ofApp::draw_arrow(glm::vec2 location, glm::vec2 target, float size) {

	auto angle = std::atan2(target.y - location.y, target.x - location.x);
	auto distance = glm::distance(target, location);

	if (glm::length(distance) > size * 0.1) {

		ofPushMatrix();
		ofTranslate(target);

		ofSetColor(255);
		ofFill();
		ofBeginShape();
		ofVertex(glm::vec2(size * cos(angle), size * sin(angle)));
		ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));
		ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));
		ofEndShape();

		ofBeginShape();
		ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5);
		ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle)));
		ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle)));
		ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5);
		ofEndShape();

		ofSetColor(0);
		ofNoFill();
		ofBeginShape();
		ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5);
		ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));
		ofVertex(glm::vec2(size * cos(angle), size * sin(angle)));
		ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));
		ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5);
		ofEndShape();

		ofBeginShape();
		ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5);
		ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle)));
		ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle)));
		ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5);
		ofEndShape();

		ofPopMatrix();
	}
}


//--------------------------------------------------------------
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(255);

ofSetLineWidth(2);

ofSetCircleResolution(60);

}

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

void ofApp::update() {

ofSeedRandom(39);

if (ofGetFrameNum() % 60 < 35) {

this->noise_param += ofMap(ofGetFrameNum() % 60, 0, 35, 0.1, 0);

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

for (float radius = 80; radius <= 360; radius += 120) {

ofSetColor(0);

ofNoFill();

ofDrawCircle(glm::vec2(), radius);

for (int deg = 0; deg < 360; deg += 3) {

auto base_location = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));

auto noise_value = ofNoise(glm::vec3(cos(deg * DEG_TO_RAD) * 6, sin(deg * DEG_TO_RAD) * 6, radius + this->noise_param));

auto noise_radius = radius;

if (noise_value < 0.4) { noise_radius = ofMap(noise_value, 0, 0.4, radius * 0.85, radius); }

if (noise_value > 0.6) { noise_radius = ofMap(noise_value, 0.6, 1, radius, radius * 1.35); }

this->draw_arrow(base_location, glm::vec2(noise_radius * cos(deg * DEG_TO_RAD), noise_radius * sin(deg * DEG_TO_RAD)), radius / 15);

}

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

void ofApp::draw_arrow(glm::vec2 location, glm::vec2 target, float size) {

auto angle = std::atan2(target.y - location.y, target.x - location.x);

auto distance = glm::distance(target, location);

if (glm::length(distance) > size * 0.1) {

ofPushMatrix();

ofTranslate(target);

ofSetColor(255);

ofFill();

ofBeginShape();

ofVertex(glm::vec2(size * cos(angle), size * sin(angle)));

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));

ofEndShape();

ofBeginShape();

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5);

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle)));

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle)));

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5);

ofEndShape();

ofSetColor(0);

ofNoFill();

ofBeginShape();

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5);

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));

ofVertex(glm::vec2(size * cos(angle), size * sin(angle)));

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5);

ofEndShape();

ofBeginShape();

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5);

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle)));

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle)));

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5);

ofEndShape();

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220414

[ほしいものリスト]
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[ Sponsor Link ]

2022年4月13日2022年4月13日

Noisen ring. Draw by openFrameworks

[ Video ]

[ About ]
ノイズの王となれ。

[ 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 face, line;

	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 face, line;

float noise_param;

};

#include "ofApp.h"

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

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

	ofBackground(255);
	ofEnableDepthTest();
	ofSetLineWidth(3);

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

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

	if (ofGetFrameNum() % 60 < 35) {

		this->noise_param += ofMap(ofGetFrameNum() % 60, 0, 35, 0.2, 0);
	}

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

	float phi_deg_step = 0.5;
	float theta_deg_step = 0.5;
	float theta_start = 70;
	float theta_end = 110;
	float threshold = 0.45;

	float radius = 150;

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

		for (float theta_deg = theta_start; theta_deg <= theta_end; theta_deg += theta_deg_step) {

			auto noise_value = ofNoise(
				radius * cos(phi_deg * DEG_TO_RAD) * 0.02,
				radius * sin(phi_deg * DEG_TO_RAD) * 0.02,
				radius * cos(theta_deg * DEG_TO_RAD) * 0.02,
				this->noise_param);

			if (noise_value < threshold) { continue; }

			auto noise_value_1 = ofNoise(
				radius * cos(phi_deg * DEG_TO_RAD) * 0.02,
				radius * sin(phi_deg * DEG_TO_RAD) * 0.02,
				radius * cos((theta_deg - theta_deg_step) * DEG_TO_RAD) * 0.02,
				this->noise_param);
			auto noise_value_2 = ofNoise(
				radius * cos((phi_deg + phi_deg_step) * DEG_TO_RAD) * 0.02,
				radius * sin((phi_deg + phi_deg_step) * DEG_TO_RAD) * 0.02,
				radius * cos(theta_deg * DEG_TO_RAD) * 0.02,
				this->noise_param);
			auto noise_value_3 = ofNoise(
				radius * cos((phi_deg - phi_deg_step) * DEG_TO_RAD) * 0.02,
				radius * sin((phi_deg - phi_deg_step) * DEG_TO_RAD) * 0.02,
				radius * cos(theta_deg * DEG_TO_RAD) * 0.02,
				this->noise_param);
			auto noise_value_4 = ofNoise(
				radius * cos(phi_deg * DEG_TO_RAD) * 0.02,
				radius * sin(phi_deg * DEG_TO_RAD) * 0.02,
				radius * cos((theta_deg + theta_deg_step) * DEG_TO_RAD) * 0.02,
				this->noise_param);

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

			vertices.push_back(glm::vec3(
				radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),
				radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),
				radius * cos((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD)));
			vertices.push_back(glm::vec3(
				radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),
				radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),
				radius * cos((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD)));
			vertices.push_back(glm::vec3(
				radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),
				radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),
				radius * cos((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD)));
			vertices.push_back(glm::vec3(
				radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),
				radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),
				radius * cos((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD)));

			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_value_1 < threshold || theta_deg == theta_start) {

				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_value_2 < 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_value_3 < 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);
			}

			if (noise_value_4 < threshold || theta_deg == theta_end) {

				this->line.addVertex(vertices[2]); this->line.addVertex(vertices[3]);
				this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);
			}
		}
	}
}

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

	this->cam.begin();
	ofRotateX(270);
	ofRotateZ(ofGetFrameNum());

	ofSetColor(255);
	this->face.draw();
	ofSetColor(0);
	this->line.draw();

	this->cam.end();
}

//--------------------------------------------------------------
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(255);

ofEnableDepthTest();

ofSetLineWidth(3);

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

}

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

void ofApp::update() {

if (ofGetFrameNum() % 60 < 35) {

this->noise_param += ofMap(ofGetFrameNum() % 60, 0, 35, 0.2, 0);

}

this->face.clear();

this->line.clear();

float phi_deg_step = 0.5;

float theta_deg_step = 0.5;

float theta_start = 70;

float theta_end = 110;

float threshold = 0.45;

float radius = 150;

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

for (float theta_deg = theta_start; theta_deg <= theta_end; theta_deg += theta_deg_step) {

auto noise_value = ofNoise(

radius * cos(phi_deg * DEG_TO_RAD) * 0.02,

radius * sin(phi_deg * DEG_TO_RAD) * 0.02,

radius * cos(theta_deg * DEG_TO_RAD) * 0.02,

this->noise_param);

if (noise_value < threshold) { continue; }

auto noise_value_1 = ofNoise(

radius * cos(phi_deg * DEG_TO_RAD) * 0.02,

radius * sin(phi_deg * DEG_TO_RAD) * 0.02,

radius * cos((theta_deg - theta_deg_step) * DEG_TO_RAD) * 0.02,

this->noise_param);

auto noise_value_2 = ofNoise(

radius * cos((phi_deg + phi_deg_step) * DEG_TO_RAD) * 0.02,

radius * sin((phi_deg + phi_deg_step) * DEG_TO_RAD) * 0.02,

radius * cos(theta_deg * DEG_TO_RAD) * 0.02,

this->noise_param);

auto noise_value_3 = ofNoise(

radius * cos((phi_deg - phi_deg_step) * DEG_TO_RAD) * 0.02,

radius * sin((phi_deg - phi_deg_step) * DEG_TO_RAD) * 0.02,

radius * cos(theta_deg * DEG_TO_RAD) * 0.02,

this->noise_param);

auto noise_value_4 = ofNoise(

radius * cos(phi_deg * DEG_TO_RAD) * 0.02,

radius * sin(phi_deg * DEG_TO_RAD) * 0.02,

radius * cos((theta_deg + theta_deg_step) * DEG_TO_RAD) * 0.02,

this->noise_param);

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

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(

radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),

radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),

radius * cos((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD)));

vertices.push_back(glm::vec3(

radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),

radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),

radius * cos((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD)));

vertices.push_back(glm::vec3(

radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),

radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),

radius * cos((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD)));

vertices.push_back(glm::vec3(

radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),

radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),

radius * cos((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD)));

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_value_1 < threshold || theta_deg == theta_start) {

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_value_2 < 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_value_3 < 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);

}

if (noise_value_4 < threshold || theta_deg == theta_end) {

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

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

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(270);

ofRotateZ(ofGetFrameNum());

ofSetColor(255);

this->face.draw();

ofSetColor(0);

this->line.draw();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220413

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2022年4月12日

Drop. Draw by openframeworks

[ Video ]

[ About ]
ドロップ。

Drop.

[ 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(0);
	ofSetLineWidth(3);
}

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

	ofSeedRandom(39);

}

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

	auto span = 60; 

	ofSetColor(255);
	for (int x = span; x < ofGetWidth(); x += span) {

		for (int y = 0; y < ofGetHeight(); y += 3) {

			auto noise_value = ofNoise(x * 0.05, y * 0.008 - ofGetFrameNum() * 0.01);

			if (noise_value > 0.45) {

				auto radius = ofMap(noise_value, 0.45, 1, 0.1, span * 0.5);


				ofNoFill();
				ofDrawCircle(x, y, radius);
			}
		}
	}


	ofSetColor(0);
	for (int x = span; x < ofGetWidth(); x += span) {

		for (int y = 0; y < ofGetHeight(); y += 18) {

			auto noise_value = ofNoise(x * 0.05, y * 0.008 - ofGetFrameNum() * 0.01);

			if (noise_value > 0.45) {

				auto radius = ofMap(noise_value, 0.45, 1, 0.1, span * 0.5);

				ofFill();
				ofDrawCircle(x, y, radius);
			}
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetLineWidth(3);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

auto span = 60;

ofSetColor(255);

for (int x = span; x < ofGetWidth(); x += span) {

for (int y = 0; y < ofGetHeight(); y += 3) {

auto noise_value = ofNoise(x * 0.05, y * 0.008 - ofGetFrameNum() * 0.01);

if (noise_value > 0.45) {

auto radius = ofMap(noise_value, 0.45, 1, 0.1, span * 0.5);

ofNoFill();

ofDrawCircle(x, y, radius);

}

ofSetColor(0);

for (int x = span; x < ofGetWidth(); x += span) {

for (int y = 0; y < ofGetHeight(); y += 18) {

auto noise_value = ofNoise(x * 0.05, y * 0.008 - ofGetFrameNum() * 0.01);

if (noise_value > 0.45) {

auto radius = ofMap(noise_value, 0.45, 1, 0.1, span * 0.5);

ofFill();

ofDrawCircle(x, y, radius);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220412

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