openframeworks – ページ 392 – プログラミング de 落描き

2020年5月24日

Noisy belt. Draw by openFrameworks

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[ About ]
Noisy belt.

[ 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) {};

	float noise_seed;
	ofMesh face, frame;
};

#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) {};

float noise_seed;

ofMesh face, frame;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(0);
	ofSetLineWidth(0.5);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
	
	this->noise_seed = ofRandom(1000);
	this->frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
}

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

	ofSeedRandom(39);

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

	auto base_seed = ofRandom(10000);
	for (int k = 0; k < 600; k++) {

		auto base_x = ofRandom(-100, ofGetWidth() + 100);
		auto base_location = glm::vec2(base_x, ofMap(ofNoise(base_seed, base_x * 0.003 + this->noise_seed), 0, 1, 100, ofGetHeight() - 100));

		auto location = base_location + glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0025), 0, 1, -60, 60), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0025), 0, 1, -120, 120));

		this->face.addVertex(glm::vec3(location, 0));
		this->frame.addVertex(glm::vec3(location, 0));

		ofColor color;
		color.setHsb((int)ofMap(location.x, 0, ofGetWidth(), 240, 240 + 255) % 255, 255, 255);

		this->face.addColor(ofColor(color, 64));
		this->frame.addColor(color);

	}

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

		vector<int> near_index_list;
		auto location = this->face.getVertex(i);
		for (int k = 0; k < this->face.getNumVertices(); k++) {

			auto other = this->face.getVertex(k);
			auto distance = glm::distance(location, other);

			if (distance < 30) {

				near_index_list.push_back(k);
			}
		}

		if (near_index_list.size() > 3) {

			for (int k = 0; k < near_index_list.size() - 2; k++) {

				this->face.addIndex(i);
				this->face.addIndex(near_index_list[k]);
				this->face.addIndex(near_index_list[k + 1]);

				this->frame.addIndex(i); this->frame.addIndex(near_index_list[k]);
				this->frame.addIndex(i); this->frame.addIndex(near_index_list[k + 1]);
			}
		}
	}

	if (ofGetFrameNum() % 120 < 80) {

		this->noise_seed += ofMap(ofGetFrameNum() % 120, 0, 80, 0.03, 0);
	}
}

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

	this->face.draw();
	this->frame.drawWireframe();

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

		ofSetColor(this->frame.getColor(i));
		ofDrawCircle(this->frame.getVertex(i), 2);
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetLineWidth(0.5);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

this->noise_seed = ofRandom(1000);

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

auto base_seed = ofRandom(10000);

for (int k = 0; k < 600; k++) {

auto base_x = ofRandom(-100, ofGetWidth() + 100);

auto base_location = glm::vec2(base_x, ofMap(ofNoise(base_seed, base_x * 0.003 + this->noise_seed), 0, 1, 100, ofGetHeight() - 100));

auto location = base_location + glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0025), 0, 1, -60, 60), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0025), 0, 1, -120, 120));

this->face.addVertex(glm::vec3(location, 0));

this->frame.addVertex(glm::vec3(location, 0));

ofColor color;

color.setHsb((int)ofMap(location.x, 0, ofGetWidth(), 240, 240 + 255) % 255, 255, 255);

this->face.addColor(ofColor(color, 64));

this->frame.addColor(color);

}

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

vector<int> near_index_list;

auto location = this->face.getVertex(i);

for (int k = 0; k < this->face.getNumVertices(); k++) {

auto other = this->face.getVertex(k);

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

if (distance < 30) {

near_index_list.push_back(k);

}

if (near_index_list.size() > 3) {

for (int k = 0; k < near_index_list.size() - 2; k++) {

this->face.addIndex(i);

this->face.addIndex(near_index_list[k]);

this->face.addIndex(near_index_list[k + 1]);

this->frame.addIndex(i); this->frame.addIndex(near_index_list[k]);

this->frame.addIndex(i); this->frame.addIndex(near_index_list[k + 1]);

}

if (ofGetFrameNum() % 120 < 80) {

this->noise_seed += ofMap(ofGetFrameNum() % 120, 0, 80, 0.03, 0);

}

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

void ofApp::draw() {

this->face.draw();

this->frame.drawWireframe();

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

ofSetColor(this->frame.getColor(i));

ofDrawCircle(this->frame.getVertex(i), 2);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200524

2020年5月23日

Shards popping out. Draw by openFrameworks

[ Video ]

[ About ]
Shards popping out.

[ 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;
	ofIcoSpherePrimitive ico_sphere;
	ofMesh mesh, frame;
};

#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;

ofIcoSpherePrimitive ico_sphere;

ofMesh mesh, frame;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofEnableDepthTest();

	this->ico_sphere = ofIcoSpherePrimitive(65, 2);
	this->frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
}

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

	ofSeedRandom(39);

	this->mesh.clear();
	this->frame.clear();

	int radius_start = 65;
	int radius_max = 180;
	for (auto& triangle : this->ico_sphere.getMesh().getUniqueFaces()) {

		auto noise_seed_x = ofRandom(1000);
		auto noise_seed_y = ofRandom(1000);
		auto noise_seed_z = ofRandom(1000);

		auto noise_value = ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005);
		int radius_end = noise_value > 0.8 ? ofMap(noise_value, 0.8, 1, radius_start, radius_max) : radius_start;
		this->frame.addVertex(glm::vec3());
		for (int radius = radius_start; radius <= radius_end; radius += 1) {

			auto mesh_index = this->mesh.getNumVertices();
			auto frame_index = this->frame.getNumVertices();

			auto param = ofMap(radius, radius_start, radius_max, 0, PI * 0.25);

			auto angle_x = ofMap(ofNoise(noise_seed_x, radius * 0.03 + ofGetFrameNum() * 0.005), 0, 1, -param, param);
			auto rotation_x = glm::rotate(glm::mat4(), angle_x, glm::vec3(1, 0, 0));
			auto angle_y = ofMap(ofNoise(noise_seed_y, radius * 0.03 + ofGetFrameNum() * 0.005), 0, 1, -param, param);
			auto rotation_y = glm::rotate(glm::mat4(), angle_y, glm::vec3(0, 1, 0));
			auto angle_z = ofMap(ofNoise(noise_seed_z, radius * 0.03 + ofGetFrameNum() * 0.005), 0, 1, -param, param);
			auto rotation_z = glm::rotate(glm::mat4(), angle_z, glm::vec3(0, 0, 1));

			glm::vec3 avg = (triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;
			glm::vec3 loc = glm::normalize(avg) * radius;

			if (radius == radius_end) {

				this->mesh.addVertex(glm::vec4(loc + triangle.getVertex(0) - avg, 0) * rotation_z * rotation_y * rotation_x);
				this->mesh.addVertex(glm::vec4(loc + triangle.getVertex(1) - avg, 0) * rotation_z * rotation_y * rotation_x);
				this->mesh.addVertex(glm::vec4(loc + triangle.getVertex(2) - avg, 0) * rotation_z * rotation_y * rotation_x);

				this->mesh.addIndex(mesh_index + 0); this->mesh.addIndex(mesh_index + 1); this->mesh.addIndex(mesh_index + 2);
			}

			this->frame.addVertex(glm::vec4(loc, 0) * rotation_z * rotation_y * rotation_x);
			this->frame.addIndex(frame_index + 0); this->frame.addIndex(frame_index - 1);
		}
	}
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.75);

	ofSetColor(39);
	this->frame.drawWireframe();
	this->mesh.drawWireframe();

	ofSetColor(239);
	this->mesh.draw();
	
	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofEnableDepthTest();

this->ico_sphere = ofIcoSpherePrimitive(65, 2);

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->mesh.clear();

this->frame.clear();

int radius_start = 65;

int radius_max = 180;

for (auto& triangle : this->ico_sphere.getMesh().getUniqueFaces()) {

auto noise_seed_x = ofRandom(1000);

auto noise_seed_y = ofRandom(1000);

auto noise_seed_z = ofRandom(1000);

auto noise_value = ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005);

int radius_end = noise_value > 0.8 ? ofMap(noise_value, 0.8, 1, radius_start, radius_max) : radius_start;

this->frame.addVertex(glm::vec3());

for (int radius = radius_start; radius <= radius_end; radius += 1) {

auto mesh_index = this->mesh.getNumVertices();

auto frame_index = this->frame.getNumVertices();

auto param = ofMap(radius, radius_start, radius_max, 0, PI * 0.25);

auto angle_x = ofMap(ofNoise(noise_seed_x, radius * 0.03 + ofGetFrameNum() * 0.005), 0, 1, -param, param);

auto rotation_x = glm::rotate(glm::mat4(), angle_x, glm::vec3(1, 0, 0));

auto angle_y = ofMap(ofNoise(noise_seed_y, radius * 0.03 + ofGetFrameNum() * 0.005), 0, 1, -param, param);

auto rotation_y = glm::rotate(glm::mat4(), angle_y, glm::vec3(0, 1, 0));

auto angle_z = ofMap(ofNoise(noise_seed_z, radius * 0.03 + ofGetFrameNum() * 0.005), 0, 1, -param, param);

auto rotation_z = glm::rotate(glm::mat4(), angle_z, glm::vec3(0, 0, 1));

glm::vec3 avg = (triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;

glm::vec3 loc = glm::normalize(avg) * radius;

if (radius == radius_end) {

this->mesh.addVertex(glm::vec4(loc + triangle.getVertex(0) - avg, 0) * rotation_z * rotation_y * rotation_x);

this->mesh.addVertex(glm::vec4(loc + triangle.getVertex(1) - avg, 0) * rotation_z * rotation_y * rotation_x);

this->mesh.addVertex(glm::vec4(loc + triangle.getVertex(2) - avg, 0) * rotation_z * rotation_y * rotation_x);

this->mesh.addIndex(mesh_index + 0); this->mesh.addIndex(mesh_index + 1); this->mesh.addIndex(mesh_index + 2);

}

this->frame.addVertex(glm::vec4(loc, 0) * rotation_z * rotation_y * rotation_x);

this->frame.addIndex(frame_index + 0); this->frame.addIndex(frame_index - 1);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.75);

ofSetColor(39);

this->frame.drawWireframe();

this->mesh.drawWireframe();

ofSetColor(239);

this->mesh.draw();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200523

2020年5月22日2020年5月22日

Switch 270-degree arcs. Draw by openFrameworks

[ Video ]

[ About ]
Switch 270-degree arcs.

[ 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) {};
};

#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) {};

};

#include "ofApp.h"	

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(239);
	ofSetColor(39);
	ofNoFill();
	ofSetLineWidth(3);
}

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

	ofSeedRandom(39);
}

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

	auto span = 45;
	auto radius = span * 0.5;
	for (int x = radius; x < ofGetWidth(); x += span) {

		for (int y = radius; y < ofGetHeight(); y += span) {

			auto noise_value = ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005);
			auto deg_start = 0;

			if (noise_value < 0.2) { deg_start = 0; }
			else if (noise_value < 0.25) { deg_start = ofMap(noise_value, 0.2, 0.25, 0, 90); }
			else if (noise_value < 0.45) { deg_start = 90; }
			else if (noise_value < 0.50) { deg_start = ofMap(noise_value, 0.45, 0.50, 90, 180); }
			else if (noise_value < 0.70) { deg_start = 180; }
			else if (noise_value < 0.75) { deg_start = ofMap(noise_value, 0.7, 0.75, 180, 270); }
			else if (noise_value < 0.95) { deg_start = 270; }
			else if (noise_value < 1.0) { ofMap(noise_value, 0.95, 1.0, 270, 360); }
			
			ofNoFill();
			ofBeginShape();
			for (int deg = deg_start; deg <= deg_start + 270; deg++) {

				ofVertex(x + radius * cos(deg * DEG_TO_RAD), y + radius * sin(deg * DEG_TO_RAD));
			}
			ofEndShape();

			ofFill();
			ofDrawCircle(glm::vec2(x + radius * cos(deg_start * DEG_TO_RAD), y + radius * sin(deg_start * DEG_TO_RAD)), 5);
			ofDrawCircle(glm::vec2(x + radius * cos((deg_start + 270) * DEG_TO_RAD), y + radius * sin((deg_start + 270) * DEG_TO_RAD)), 5);
		}
	}

}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetColor(39);

ofNoFill();

ofSetLineWidth(3);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

auto span = 45;

auto radius = span * 0.5;

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

for (int y = radius; y < ofGetHeight(); y += span) {

auto noise_value = ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005);

auto deg_start = 0;

if (noise_value < 0.2) { deg_start = 0; }

else if (noise_value < 0.25) { deg_start = ofMap(noise_value, 0.2, 0.25, 0, 90); }

else if (noise_value < 0.45) { deg_start = 90; }

else if (noise_value < 0.50) { deg_start = ofMap(noise_value, 0.45, 0.50, 90, 180); }

else if (noise_value < 0.70) { deg_start = 180; }

else if (noise_value < 0.75) { deg_start = ofMap(noise_value, 0.7, 0.75, 180, 270); }

else if (noise_value < 0.95) { deg_start = 270; }

else if (noise_value < 1.0) { ofMap(noise_value, 0.95, 1.0, 270, 360); }

ofNoFill();

ofBeginShape();

for (int deg = deg_start; deg <= deg_start + 270; deg++) {

ofVertex(x + radius * cos(deg * DEG_TO_RAD), y + radius * sin(deg * DEG_TO_RAD));

}

ofEndShape();

ofFill();

ofDrawCircle(glm::vec2(x + radius * cos(deg_start * DEG_TO_RAD), y + radius * sin(deg_start * DEG_TO_RAD)), 5);

ofDrawCircle(glm::vec2(x + radius * cos((deg_start + 270) * DEG_TO_RAD), y + radius * sin((deg_start + 270) * DEG_TO_RAD)), 5);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200522

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