noise – ページ 94 – プログラミング de 落描き

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

2022年7月4日

雨の夜。Draw by openFrameworks

[ Video ]

[ About ]
雨の夜。

Rainy night.

[ 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) {};

	ofFbo fbo;

	void draw_tree(ofPoint point, float deg, int len, int depth);
};

#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) {};

ofFbo fbo;

void draw_tree(ofPoint point, float deg, int len, int depth);

};

#include "ofApp.h"

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

	ofSetFrameRate(24);
	ofBackground(0);
	ofSetWindowTitle("openFrameworks");

	ofSetCircleResolution(72);
	this->fbo.allocate(ofGetWidth(), ofGetHeight() / 2);
}

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

	ofSeedRandom(39);

	this->fbo.begin();
	ofClear(0);

	// Draw Sun To Fbo
	ofPushMatrix();
	ofTranslate(this->fbo.getWidth() / 3, this->fbo.getHeight() / 5 * 2);

	ofSetColor(255, 255, 0);
	ofDrawCircle(glm::vec3(), 100);

	ofPopMatrix();

	// Draw Rain
	ofSetColor(255);
	for (int i = 0; i < 50; i++) {

		int x = ofRandom(ofGetWidth());
		int y = (int)(ofRandom(this->fbo.getHeight()) + ofGetFrameNum() * ofRandom(10, 30)) % (int)this->fbo.getHeight();

		ofDrawLine(x, y, x, y + ofRandom(10, 30));
	}

	this->fbo.end();
}

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

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

	// Draw Fbo 
	ofSetColor(255, 255);
	this->fbo.draw(-ofGetWidth() / 2, -ofGetHeight() / 2);

	// Draw Shadow
	ofPixels pixels;
	this->fbo.readToPixels(pixels);

	for (int y = 0; y < pixels.getHeight(); y++) {

		int noise_x = ofMap(ofNoise(y * 0.05 + ofGetFrameNum() * 0.05), 0, 1, -20, 20);
		noise_x = noise_x * ofMap(y, 0, pixels.getHeight(), 1, 0.1);

		if (noise_x > 0) {

			for (int x = pixels.getWidth() - 1; x > noise_x; x--) {

				pixels.setColor(x, y, pixels.getColor(x - noise_x, y));
			}
			for (int x = 0; x < noise_x; x++) {

				pixels.setColor(x, y, ofColor(39));
			}
		}
		else if (noise_x < 0) {

			for (int x = 0; x < pixels.getWidth() + noise_x; x++) {

				pixels.setColor(x, y, pixels.getColor(x - noise_x, y));
			}
			for (int x = pixels.getWidth() + noise_x; x < pixels.getWidth(); x++) {

				pixels.setColor(x, y, ofColor(39));
			}
		}

	}
	ofImage image;
	image.setFromPixels(pixels);

	ofRotate(180);
	ofRotateY(180);
	ofSetColor(255, 64);
	image.draw(-ofGetWidth() / 2, -ofGetHeight() / 2);

	ofDrawLine(-360, 0, 360, 0);
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(24);

ofBackground(0);

ofSetWindowTitle("openFrameworks");

ofSetCircleResolution(72);

this->fbo.allocate(ofGetWidth(), ofGetHeight() / 2);

}

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

void ofApp::update() {

ofSeedRandom(39);

this->fbo.begin();

ofClear(0);

// Draw Sun To Fbo

ofPushMatrix();

ofTranslate(this->fbo.getWidth() / 3, this->fbo.getHeight() / 5 * 2);

ofSetColor(255, 255, 0);

ofDrawCircle(glm::vec3(), 100);

ofPopMatrix();

// Draw Rain

ofSetColor(255);

for (int i = 0; i < 50; i++) {

int x = ofRandom(ofGetWidth());

int y = (int)(ofRandom(this->fbo.getHeight()) + ofGetFrameNum() * ofRandom(10, 30)) % (int)this->fbo.getHeight();

ofDrawLine(x, y, x, y + ofRandom(10, 30));

}

this->fbo.end();

}

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

void ofApp::draw() {

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

// Draw Fbo

ofSetColor(255, 255);

this->fbo.draw(-ofGetWidth() / 2, -ofGetHeight() / 2);

// Draw Shadow

ofPixels pixels;

this->fbo.readToPixels(pixels);

for (int y = 0; y < pixels.getHeight(); y++) {

int noise_x = ofMap(ofNoise(y * 0.05 + ofGetFrameNum() * 0.05), 0, 1, -20, 20);

noise_x = noise_x * ofMap(y, 0, pixels.getHeight(), 1, 0.1);

if (noise_x > 0) {

for (int x = pixels.getWidth() - 1; x > noise_x; x--) {

pixels.setColor(x, y, pixels.getColor(x - noise_x, y));

}

for (int x = 0; x < noise_x; x++) {

pixels.setColor(x, y, ofColor(39));

}

else if (noise_x < 0) {

for (int x = 0; x < pixels.getWidth() + noise_x; x++) {

pixels.setColor(x, y, pixels.getColor(x - noise_x, y));

}

for (int x = pixels.getWidth() + noise_x; x < pixels.getWidth(); x++) {

pixels.setColor(x, y, ofColor(39));

}

ofImage image;

image.setFromPixels(pixels);

ofRotate(180);

ofRotateY(180);

ofSetColor(255, 64);

image.draw(-ofGetWidth() / 2, -ofGetHeight() / 2);

ofDrawLine(-360, 0, 360, 0);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220704

2022年7月3日

Circle of circle. Draw by openFrameworks

[ Video ]

[ About ]
わっかの円。

Circle of circle.

[ 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) {};

	glm::vec3 make_point(float R, float r, float u, float v);

	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) {};

glm::vec3 make_point(float R, float r, float u, float v);

ofEasyCam cam;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openframeworks");

	ofBackground(255);
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();

	float R = 200;
	float r = 50;
	float u_span = 10;

	ofMesh face, line;
	line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

	for (int x = -550; x <= 550; x += 550) {

		for(int y = -550; y <= 550; y += 550){

			for (int r = 50; r > 0; r -= 2) {

				int v_start = ofMap(ofNoise(x * 0.005, y * 0.005,  r * 0.008 + ofGetFrameNum() * 0.025), 0, 1, -360, 360);
				int v_end = v_start + 3;
				int v_span = 2;

				for (int v = v_start; v <= v_end; v += v_span) {

					for (int u = 0; u < 360; u += u_span) {

						face.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u - u_span * 0.5, v - v_span * 0.5));
						face.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u + u_span * 0.5, v - v_span * 0.5));
						face.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u + u_span * 0.5, v + v_span * 0.5));
						face.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u - u_span * 0.5, v + v_span * 0.5));

						line.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u - u_span * 0.5, v - v_span * 0.5));
						line.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u + u_span * 0.5, v - v_span * 0.5));
						line.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u + u_span * 0.5, v + v_span * 0.5));
						line.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u - u_span * 0.5, v + v_span * 0.5));

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

							face.addColor(ofColor(0));
							line.addColor(ofColor(255));
						}

						face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2); face.addIndex(face.getNumVertices() - 3);
						face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 3); face.addIndex(face.getNumVertices() - 4);

						if (v == v_start) {

							line.addIndex(line.getNumVertices() - 3); line.addIndex(line.getNumVertices() - 4);
						}

						if (v == v_end) {

							line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 2);
						}
					}
				}
			}
		}
	}

	face.draw();
	line.drawWireframe();

	this->cam.end();
}

//--------------------------------------------------------------
glm::vec3 ofApp::make_point(float R, float r, float u, float v) {

	// 数学デッサン教室 描いて楽しむ数学たち　P.31

	u *= DEG_TO_RAD;
	v *= DEG_TO_RAD;

	auto x = (R + r * cos(u)) * cos(v);
	auto y = (R + r * cos(u)) * sin(v);
	auto z = r * sin(u);

	return glm::vec3(x, y, z);
}

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

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

float R = 200;

float r = 50;

float u_span = 10;

ofMesh face, line;

line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

for (int x = -550; x <= 550; x += 550) {

for(int y = -550; y <= 550; y += 550){

for (int r = 50; r > 0; r -= 2) {

int v_start = ofMap(ofNoise(x * 0.005, y * 0.005, r * 0.008 + ofGetFrameNum() * 0.025), 0, 1, -360, 360);

int v_end = v_start + 3;

int v_span = 2;

for (int v = v_start; v <= v_end; v += v_span) {

for (int u = 0; u < 360; u += u_span) {

face.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u - u_span * 0.5, v - v_span * 0.5));

face.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u + u_span * 0.5, v - v_span * 0.5));

face.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u + u_span * 0.5, v + v_span * 0.5));

face.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u - u_span * 0.5, v + v_span * 0.5));

line.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u - u_span * 0.5, v - v_span * 0.5));

line.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u + u_span * 0.5, v - v_span * 0.5));

line.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u + u_span * 0.5, v + v_span * 0.5));

line.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u - u_span * 0.5, v + v_span * 0.5));

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

face.addColor(ofColor(0));

line.addColor(ofColor(255));

}

face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2); face.addIndex(face.getNumVertices() - 3);

face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 3); face.addIndex(face.getNumVertices() - 4);

if (v == v_start) {

line.addIndex(line.getNumVertices() - 3); line.addIndex(line.getNumVertices() - 4);

}

if (v == v_end) {

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

}

face.draw();

line.drawWireframe();

this->cam.end();

}

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

glm::vec3 ofApp::make_point(float R, float r, float u, float v) {

// 数学デッサン教室描いて楽しむ数学たち　P.31

u *= DEG_TO_RAD;

v *= DEG_TO_RAD;

auto x = (R + r * cos(u)) * cos(v);

auto y = (R + r * cos(u)) * sin(v);

auto z = r * sin(u);

return glm::vec3(x, y, z);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220703

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