junkiyoshi – ページ 848 – プログラミング de 落描き

2018年7月29日2018年7月29日

Velocity is alpha channel of color. openframeworks

[ Video ]

[ About ]
パーティクルの速度と色の透明度をリンクさせてみました。

Velocity is linked with color alpha.

[ Source ]

#pragma once
#include "ofMain.h"
#include "ofxBox2d.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) {}

	ofxBox2d box2d;
	vector<pair<shared_ptr<ofxBox2dCircle>, ofColor>> circles;
	int force_field_radius;
};

#pragma once

#include "ofMain.h"

#include "ofxBox2d.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) {}

ofxBox2d box2d;

vector<pair<shared_ptr<ofxBox2dCircle>, ofColor>> circles;

int force_field_radius;

};

#include "ofApp.h"

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

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

	ofBackground(39);

	// Initialize ofxBox2d
	this->box2d.init();
    this->box2d.setGravity(0, 0);
	this->box2d.createBounds();
	this->box2d.setFPS(60);
	this->box2d.registerGrabbing();

	// Add Circle
	for (int i = 0; i < 256; i++) {

		float radius = 12;
		shared_ptr<ofxBox2dCircle> circle = make_shared<ofxBox2dCircle>();
		circle->setPhysics(1.0, 0.85, 0.5);
		circle->setup(this->box2d.getWorld(), ofRandom(ofGetWidth()), ofRandom(ofGetHeight()), radius);

		ofColor color;
		color.setHsb(ofRandom(255), 239, 239);

		this->circles.push_back(make_pair(circle, color));
	}

	this->force_field_radius = 150;
}

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

	// Field of Force on Center
	for (int i = 0; i < this->circles.size(); i++) {

		shared_ptr<ofxBox2dCircle> circle = get<0>(this->circles[i]);
		ofPoint point = get<0>(this->circles[i])->getPosition();

		float distance = point.distance(ofPoint(ofGetWidth() / 2, ofGetHeight() / 2));
		if(distance < this->force_field_radius) {

			ofPoint p = ofPoint(this->force_field_radius * cos(ofGetFrameNum() * DEG_TO_RAD), this->force_field_radius * sin(ofGetFrameNum() * DEG_TO_RAD));
			circle->addForce(p, ofMap(distance, 0, this->force_field_radius, 15, 1));
		}
	}

	// Compute box2d
	this->box2d.update();
}


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

	ofPushMatrix();
	ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);

	// Draw Filed of Force
	ofNoFill();
	ofSetColor(239);
	ofSetLineWidth(0.5);
	ofBeginShape();
	for (int deg = 0; deg < 360; deg += 1) {

		ofVertex(this->force_field_radius * cos(deg * DEG_TO_RAD), this->force_field_radius * sin(deg * DEG_TO_RAD));
	}
	ofEndShape(true);

	ofFill();
	ofBeginShape();
	for (int deg = ofGetFrameNum(); deg < ofGetFrameNum() + 360; deg += 120) {

		ofVertex(this->force_field_radius * cos(deg * DEG_TO_RAD), this->force_field_radius * sin(deg * DEG_TO_RAD));
	}
	ofEndShape(true);

	ofSetColor(39);
	ofBeginShape();
	for (int deg = ofGetFrameNum(); deg < ofGetFrameNum() + 360; deg += 120) {

		ofVertex(this->force_field_radius * 0.5 * cos(deg * DEG_TO_RAD), this->force_field_radius * 0.5 * sin(deg * DEG_TO_RAD));
	}
	ofEndShape(true);

	ofPopMatrix();

	// Draw Circles
	ofSetLineWidth(3);
	for (int i = 0; i < this->circles.size(); i++) {

		shared_ptr<ofxBox2dCircle> circle = get<0>(this->circles[i]);
		ofColor circle_color = get<1>(this->circles[i]);

		float radius = circle->getRadius();
		ofPoint point = circle->getPosition();

		ofSetColor(circle_color, ofMap(circle->getVelocity().length(), 3, 12, 0, 255));
		ofDrawCircle(point, radius);
		ofDrawLine(point, point - get<0>(this->circles[i])->getVelocity());
	}
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(39);

// Initialize ofxBox2d

this->box2d.init();

this->box2d.setGravity(0, 0);

this->box2d.createBounds();

this->box2d.setFPS(60);

this->box2d.registerGrabbing();

// Add Circle

for (int i = 0; i < 256; i++) {

float radius = 12;

shared_ptr<ofxBox2dCircle> circle = make_shared<ofxBox2dCircle>();

circle->setPhysics(1.0, 0.85, 0.5);

circle->setup(this->box2d.getWorld(), ofRandom(ofGetWidth()), ofRandom(ofGetHeight()), radius);

ofColor color;

color.setHsb(ofRandom(255), 239, 239);

this->circles.push_back(make_pair(circle, color));

}

this->force_field_radius = 150;

}

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

void ofApp::update() {

// Field of Force on Center

for (int i = 0; i < this->circles.size(); i++) {

shared_ptr<ofxBox2dCircle> circle = get<0>(this->circles[i]);

ofPoint point = get<0>(this->circles[i])->getPosition();

float distance = point.distance(ofPoint(ofGetWidth() / 2, ofGetHeight() / 2));

if(distance < this->force_field_radius) {

ofPoint p = ofPoint(this->force_field_radius * cos(ofGetFrameNum() * DEG_TO_RAD), this->force_field_radius * sin(ofGetFrameNum() * DEG_TO_RAD));

circle->addForce(p, ofMap(distance, 0, this->force_field_radius, 15, 1));

}

// Compute box2d

this->box2d.update();

}

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

void ofApp::draw() {

ofPushMatrix();

ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);

// Draw Filed of Force

ofNoFill();

ofSetColor(239);

ofSetLineWidth(0.5);

ofBeginShape();

for (int deg = 0; deg < 360; deg += 1) {

ofVertex(this->force_field_radius * cos(deg * DEG_TO_RAD), this->force_field_radius * sin(deg * DEG_TO_RAD));

}

ofEndShape(true);

ofFill();

ofBeginShape();

for (int deg = ofGetFrameNum(); deg < ofGetFrameNum() + 360; deg += 120) {

ofVertex(this->force_field_radius * cos(deg * DEG_TO_RAD), this->force_field_radius * sin(deg * DEG_TO_RAD));

}

ofEndShape(true);

ofSetColor(39);

ofBeginShape();

for (int deg = ofGetFrameNum(); deg < ofGetFrameNum() + 360; deg += 120) {

ofVertex(this->force_field_radius * 0.5 * cos(deg * DEG_TO_RAD), this->force_field_radius * 0.5 * sin(deg * DEG_TO_RAD));

}

ofEndShape(true);

ofPopMatrix();

// Draw Circles

ofSetLineWidth(3);

for (int i = 0; i < this->circles.size(); i++) {

shared_ptr<ofxBox2dCircle> circle = get<0>(this->circles[i]);

ofColor circle_color = get<1>(this->circles[i]);

float radius = circle->getRadius();

ofPoint point = circle->getPosition();

ofSetColor(circle_color, ofMap(circle->getVelocity().length(), 3, 12, 0, 255));

ofDrawCircle(point, radius);

ofDrawLine(point, point - get<0>(this->circles[i])->getVelocity());

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180729

2018年7月28日

Triangular sphere. openFrameworks

[ Video ]

[ About ]
三角形の球体

Triangular sphere.

[ 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;
};

#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;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("Insta");

	ofBackground(39);
	ofNoFill();
	ofEnableDepthTest();
	ofSetLineWidth(2);
}

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

}

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

	this->cam.begin();
	ofRotateX(ofGetFrameNum() * 0.1);
	ofRotateY(ofGetFrameNum() * 0.25);

	float radius = 400;
	ofIcoSpherePrimitive ico_sphere = ofIcoSpherePrimitive(radius, 3);
	vector<ofMeshFace> triangles = ico_sphere.getMesh().getUniqueFaces();

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

		ofColor color;
		color.setHsb(c * 50, 200, 255);
		ofSetColor(color);

		int i_start = (ofGetFrameNum() + 192 * c) % triangles.size();
		for (int i = 0; i < 64; i++) {

			int index = (i_start + i) % triangles.size();

			vector<ofPoint> vertices;
			for (int j = 0; j < 3; j++) {

				ofPoint point(triangles[index].getVertex(j).x, triangles[index].getVertex(j).y, triangles[index].getVertex(j).z);
				vertices.push_back(point);
			}

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

	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("Insta");

ofBackground(39);

ofNoFill();

ofEnableDepthTest();

ofSetLineWidth(2);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(ofGetFrameNum() * 0.1);

ofRotateY(ofGetFrameNum() * 0.25);

float radius = 400;

ofIcoSpherePrimitive ico_sphere = ofIcoSpherePrimitive(radius, 3);

vector<ofMeshFace> triangles = ico_sphere.getMesh().getUniqueFaces();

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

ofColor color;

color.setHsb(c * 50, 200, 255);

ofSetColor(color);

int i_start = (ofGetFrameNum() + 192 * c) % triangles.size();

for (int i = 0; i < 64; i++) {

int index = (i_start + i) % triangles.size();

vector<ofPoint> vertices;

for (int j = 0; j < 3; j++) {

ofPoint point(triangles[index].getVertex(j).x, triangles[index].getVertex(j).y, triangles[index].getVertex(j).z);

vertices.push_back(point);

}

ofBeginShape();

ofVertices(vertices);

ofEndShape(true);

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180728

2018年7月27日2018年7月27日

Shifting Font. openframeworks

[ Video ]

[ About ]
ズレるフォント。ズレる量はパーリンノイズ(Y座標, フレーム数)で決まります。

Font is shifting. Shift volume is determined by Perlin noise(Y location, FrameNumber)

[ 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) {};

	ofTrueTypeFont font;
	int font_size;
};

#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) {};

ofTrueTypeFont font;

int font_size;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openframeworks");

	ofBackground(239);
	ofSetColor(39);

	this->font_size = 100;
	this->font.loadFont("fonts/Kazesawa-Bold.ttf", this->font_size, true, true, true);
}

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

}

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

	vector<char> charactors = { 'A', 'B', 'C', 'D', 'E', 'F',
		'G', 'H', 'I', 'J', 'K', 'L',
		'M', 'N', 'O', 'P', 'Q', 'R',
		'S', 'T', 'U', 'V', 'W', 'X',
		'Y', 'Z', '!' };
	int sample_count = 180;
	for (int charactor_index = 0; charactor_index < charactors.size(); charactor_index++) {

		ofPath path = this->font.getCharacterAsPoints(charactors[charactor_index], true, false);
		vector<ofPolyline> outline = path.getOutline();

		ofPoint location = ofPoint(charactor_index % 6 * this->font_size * 1.2 + this->font_size * 0.7, charactor_index / 6 * this->font_size * 1.4 + this->font_size * 0.7);
		ofPushMatrix();
		ofTranslate(location);

		ofNoFill();
		this->font.drawStringAsShapes(string{ charactors[charactor_index] }, this->font_size * -0.5 , this->font_size * 0.5);

		ofFill();
		ofBeginShape();
		for (int outline_index = 0; outline_index < (int)outline.size(); outline_index++) {

			if (outline_index != 0) { 
				
				ofNextContour(true); 
			}

			outline[outline_index] = outline[outline_index].getResampledByCount(sample_count);
			vector<glm::vec3> vertices = outline[outline_index].getVertices();
			for (int vertices_index = 0; vertices_index < (int)vertices.size(); vertices_index++) {

				ofPoint point(vertices[vertices_index].x - this->font_size * 0.5, vertices[vertices_index].y + this->font_size * 0.5, vertices[vertices_index].z);
				
				int noise_x = ofMap(ofNoise((location.y + point.y) * 0.01 + ofGetFrameNum() * 0.03), 0, 1, -50, 50);
				noise_x /= 10;
				noise_x *= 10;
				if (noise_x > -10 && noise_x < 10) { 
					
					noise_x = 0; 
				}

				ofVertex(point + ofPoint(noise_x, 0));
			}
		}
		ofEndShape();
		ofPopMatrix();
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

this->font_size = 100;

this->font.loadFont("fonts/Kazesawa-Bold.ttf", this->font_size, true, true, true);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

vector<char> charactors = { 'A', 'B', 'C', 'D', 'E', 'F',

'G', 'H', 'I', 'J', 'K', 'L',

'M', 'N', 'O', 'P', 'Q', 'R',

'S', 'T', 'U', 'V', 'W', 'X',

'Y', 'Z', '!' };

int sample_count = 180;

for (int charactor_index = 0; charactor_index < charactors.size(); charactor_index++) {

ofPath path = this->font.getCharacterAsPoints(charactors[charactor_index], true, false);

vector<ofPolyline> outline = path.getOutline();

ofPoint location = ofPoint(charactor_index % 6 * this->font_size * 1.2 + this->font_size * 0.7, charactor_index / 6 * this->font_size * 1.4 + this->font_size * 0.7);

ofPushMatrix();

ofTranslate(location);

ofNoFill();

this->font.drawStringAsShapes(string{ charactors[charactor_index] }, this->font_size * -0.5 , this->font_size * 0.5);

ofFill();

ofBeginShape();

for (int outline_index = 0; outline_index < (int)outline.size(); outline_index++) {

if (outline_index != 0) {

ofNextContour(true);

}

outline[outline_index] = outline[outline_index].getResampledByCount(sample_count);

vector<glm::vec3> vertices = outline[outline_index].getVertices();

for (int vertices_index = 0; vertices_index < (int)vertices.size(); vertices_index++) {

ofPoint point(vertices[vertices_index].x - this->font_size * 0.5, vertices[vertices_index].y + this->font_size * 0.5, vertices[vertices_index].z);

int noise_x = ofMap(ofNoise((location.y + point.y) * 0.01 + ofGetFrameNum() * 0.03), 0, 1, -50, 50);

noise_x /= 10;

noise_x *= 10;

if (noise_x > -10 && noise_x < 10) {

noise_x = 0;

}

ofVertex(point + ofPoint(noise_x, 0));

}

ofEndShape();

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180727

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