openFrameworks – ページ 367 – プログラミング de 落描き

2022年7月8日

Tears. Draw by openFrameworks

[ Video ]

[ About ]
悲しみ。

Tears.

[ 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(255);
	ofNoFill();
}

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

	ofSeedRandom(39);
}

//--------------------------------------------------------------
void ofApp::draw() {
	
	ofColor color = ofColor(0, 200, 255);

	for (int k = 0; k < 35; k++) {

		ofMesh mesh;
		vector<glm::vec3> right, left, frame;

		auto x = ofRandom(50, ofGetWindowWidth() - 50);
		auto base_y = ofRandom(ofGetWindowHeight());
		auto speed = ofRandom(5, 20);
		float head_size = 9;
		glm::vec3 last_location;
		float last_theta;

		for (int i = 0; i < 25; i++) {

			auto location = glm::vec3(x, (int)(base_y + (ofGetFrameNum() + i) * speed) % 1220 - 200, 0);
			auto next = glm::vec3(x, (int)(base_y + (ofGetFrameNum() + i + 1) * speed) % 1220 - 200, 0);

			auto direction = next - location;
			auto theta = atan2(direction.y, direction.x);

			right.push_back(location + glm::vec3(ofMap(i, 0, 25, 0, head_size) * cos(theta + PI * 0.5), ofMap(i, 0, 25, 0, head_size) * sin(theta + PI * 0.5), 0));
			left.push_back(location + glm::vec3(ofMap(i, 0, 25, 0, head_size) * cos(theta - PI * 0.5), ofMap(i, 0, 25, 0, head_size) * sin(theta - PI * 0.5), 0));

			last_location = location;
			last_theta = theta;
		}

		for (int i = 0; i < right.size(); i++) {

			mesh.addVertex(left[i]);
			mesh.addVertex(right[i]);

			mesh.addColor(ofColor(color, ofMap(i, 0, right.size(), 0, 255)));
			mesh.addColor(ofColor(color, ofMap(i, 0, right.size(), 0, 255)));
		}

		for (int i = 0; i < mesh.getNumVertices() - 2; i += 2) {

			mesh.addIndex(i + 0); mesh.addIndex(i + 1); mesh.addIndex(i + 3);
			mesh.addIndex(i + 0); mesh.addIndex(i + 2); mesh.addIndex(i + 3);
		}

		auto tmp_head_size = ofMap(mesh.getNumVertices() - 2, 0, mesh.getNumVertices() - 2, 0, head_size);
		tmp_head_size = head_size;

		mesh.addVertex(last_location);
		mesh.addColor(color);
		int index = mesh.getNumVertices();
		for (auto theta = last_theta - PI * 0.5; theta <= last_theta + PI * 0.5; theta += PI / 10) {

			mesh.addVertex(last_location + glm::vec3(tmp_head_size * cos(theta), tmp_head_size * sin(theta), 0));
			mesh.addColor(color);
			frame.push_back(last_location + glm::vec3(tmp_head_size * cos(theta), tmp_head_size * sin(theta), 0));
		}

		for (int i = index; i < mesh.getNumVertices() - 1; i++) {

			mesh.addIndex(index); mesh.addIndex(i + 0); mesh.addIndex(i + 1);
		}

		mesh.draw();
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(255);

ofNoFill();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

ofColor color = ofColor(0, 200, 255);

for (int k = 0; k < 35; k++) {

ofMesh mesh;

vector<glm::vec3> right, left, frame;

auto x = ofRandom(50, ofGetWindowWidth() - 50);

auto base_y = ofRandom(ofGetWindowHeight());

auto speed = ofRandom(5, 20);

float head_size = 9;

glm::vec3 last_location;

float last_theta;

for (int i = 0; i < 25; i++) {

auto location = glm::vec3(x, (int)(base_y + (ofGetFrameNum() + i) * speed) % 1220 - 200, 0);

auto next = glm::vec3(x, (int)(base_y + (ofGetFrameNum() + i + 1) * speed) % 1220 - 200, 0);

auto direction = next - location;

auto theta = atan2(direction.y, direction.x);

right.push_back(location + glm::vec3(ofMap(i, 0, 25, 0, head_size) * cos(theta + PI * 0.5), ofMap(i, 0, 25, 0, head_size) * sin(theta + PI * 0.5), 0));

left.push_back(location + glm::vec3(ofMap(i, 0, 25, 0, head_size) * cos(theta - PI * 0.5), ofMap(i, 0, 25, 0, head_size) * sin(theta - PI * 0.5), 0));

last_location = location;

last_theta = theta;

}

for (int i = 0; i < right.size(); i++) {

mesh.addVertex(left[i]);

mesh.addVertex(right[i]);

mesh.addColor(ofColor(color, ofMap(i, 0, right.size(), 0, 255)));

}

for (int i = 0; i < mesh.getNumVertices() - 2; i += 2) {

mesh.addIndex(i + 0); mesh.addIndex(i + 1); mesh.addIndex(i + 3);

mesh.addIndex(i + 0); mesh.addIndex(i + 2); mesh.addIndex(i + 3);

}

auto tmp_head_size = ofMap(mesh.getNumVertices() - 2, 0, mesh.getNumVertices() - 2, 0, head_size);

tmp_head_size = head_size;

mesh.addVertex(last_location);

mesh.addColor(color);

int index = mesh.getNumVertices();

for (auto theta = last_theta - PI * 0.5; theta <= last_theta + PI * 0.5; theta += PI / 10) {

mesh.addVertex(last_location + glm::vec3(tmp_head_size * cos(theta), tmp_head_size * sin(theta), 0));

mesh.addColor(color);

frame.push_back(last_location + glm::vec3(tmp_head_size * cos(theta), tmp_head_size * sin(theta), 0));

}

for (int i = index; i < mesh.getNumVertices() - 1; i++) {

mesh.addIndex(index); mesh.addIndex(i + 0); mesh.addIndex(i + 1);

}

mesh.draw();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220708

2022年7月7日

Vortex. Draw by openFrameworks

[ Video ]

[ About ]
渦。

Vertex.

[ 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);
	ofSetColor(255);
	ofNoFill();
}

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

	ofSeedRandom(39);
}

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

	ofTranslate(ofGetWindowSize() * 0.5);
	
	for (int base_deg = 0; base_deg < 360; base_deg += 2) {

		vector<glm::vec2> vertices;
		auto base_radius = ofRandom(720);
		auto speed = ofRandom(3, 5);
		ofSetLineWidth(ofRandom(0.5, 3));

		for (int i = 0; i < 30; i++) {

			auto deg = base_deg + (ofGetFrameNum() + i) * 3;
			auto radius = 800 - (int)(base_radius + (ofGetFrameNum() + i) * speed) % 800;
			if (radius > 650) { continue; }
			auto vertex = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
			vertices.push_back(vertex);
		}

		ofBeginShape();
		ofVertices(vertices);
		ofEndShape();		
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetColor(255);

ofNoFill();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

for (int base_deg = 0; base_deg < 360; base_deg += 2) {

vector<glm::vec2> vertices;

auto base_radius = ofRandom(720);

auto speed = ofRandom(3, 5);

ofSetLineWidth(ofRandom(0.5, 3));

for (int i = 0; i < 30; i++) {

auto deg = base_deg + (ofGetFrameNum() + i) * 3;

auto radius = 800 - (int)(base_radius + (ofGetFrameNum() + i) * speed) % 800;

if (radius > 650) { continue; }

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

vertices.push_back(vertex);

}

ofBeginShape();

ofVertices(vertices);

ofEndShape();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220707

2022年7月6日

BlendMode SUBTRACT. Draw by openFrameworks

[ Video ]

[ About ]
ブレンドモード：サブトラクト。

BlendMode SUBTRACT.

[ 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(255);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_SUBTRACT);
}

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

}

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

	ofTranslate(ofGetWindowSize() * 0.5);
	
	int radius = 250;
	float handle_len = radius * 0.5522;
	int number_of_location = 6;
	int deg_span = 360 / number_of_location;
	ofColor color;

	for (int k = 0; k < 5; k++) {

		color.setHsb(ofMap(k, 0, 5, 0, 255), 255, 255);
		ofSetColor(color);

		vector<glm::vec2> location_list;
		vector<float> deg_list;
		for (int deg = 0; deg < 360; deg += deg_span) {

			location_list.push_back(glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));
			deg_list.push_back(deg + 90);
		}

		for (int i = 0; i < location_list.size(); i++) {

			deg_list[i] += ofMap(ofNoise(glm::vec3(location_list[i] * 0.005, k * 0.03 + ofGetFrameNum() * 0.008)), 0, 1, -120, 120);
		}

		ofNoFill();
		ofSetLineWidth(2);

		ofBeginShape();
		for (int i = 0; i < location_list.size(); i++) {

			int n = (i + 1) % location_list.size();

			ofVertex(location_list[i]);
			ofBezierVertex(
				location_list[i] + glm::vec2(handle_len * cos(deg_list[i] * DEG_TO_RAD), handle_len * sin(deg_list[i] * DEG_TO_RAD)),
				location_list[n] + glm::vec2(handle_len * cos((deg_list[n] + 180) * DEG_TO_RAD), handle_len * sin((deg_list[n] + 180) * DEG_TO_RAD)),
				location_list[n]);
		}
		ofEndShape();
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(255);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_SUBTRACT);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

int radius = 250;

float handle_len = radius * 0.5522;

int number_of_location = 6;

int deg_span = 360 / number_of_location;

ofColor color;

for (int k = 0; k < 5; k++) {

color.setHsb(ofMap(k, 0, 5, 0, 255), 255, 255);

ofSetColor(color);

vector<glm::vec2> location_list;

vector<float> deg_list;

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

location_list.push_back(glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));

deg_list.push_back(deg + 90);

}

for (int i = 0; i < location_list.size(); i++) {

deg_list[i] += ofMap(ofNoise(glm::vec3(location_list[i] * 0.005, k * 0.03 + ofGetFrameNum() * 0.008)), 0, 1, -120, 120);

}

ofNoFill();

ofSetLineWidth(2);

ofBeginShape();

for (int i = 0; i < location_list.size(); i++) {

int n = (i + 1) % location_list.size();

ofVertex(location_list[i]);

ofBezierVertex(

location_list[i] + glm::vec2(handle_len * cos(deg_list[i] * DEG_TO_RAD), handle_len * sin(deg_list[i] * DEG_TO_RAD)),

location_list[n] + glm::vec2(handle_len * cos((deg_list[n] + 180) * DEG_TO_RAD), handle_len * sin((deg_list[n] + 180) * DEG_TO_RAD)),

location_list[n]);

}

ofEndShape();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220706

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