2018年11月 – ページ 6 – プログラミング de 落描き

2018年11月15日2018年11月15日

Fire. openFrameworks

[ Video ]

[ About ]
Day 15 Fire.

2次元配列による炎。0列目はパーリンノイズで値を決定、1列目以降は座標(x – 1, y – 1), (x, y – 1), (x + 1, y – 1), (x, y -2)の値の平均

Fire by two dimensional array. 0 column value determinate by Perlin Noise. From the 1 column onwards, value is average from (x – 1, y – 1), (x, y – 1), (x + 1, y – 1), (x, y -2).

[ Source ]

#pragma once
#include "ofMain.h"
#include "opencv2/opencv.hpp"

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) {};

	cv::Mat frame;

	cv::Mat draw_frame;
	ofImage draw_image;
};

#pragma once

#include "ofMain.h"

#include "opencv2/opencv.hpp"

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) {};

cv::Mat frame;

cv::Mat draw_frame;

ofImage draw_image;

};

#include "ofApp.h"

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

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

	this->frame = cv::Mat(200, 200, CV_8UC3);

	this->draw_image.allocate(ofGetWidth(), ofGetHeight(), OF_IMAGE_COLOR);
	this->draw_frame = cv::Mat(this->draw_image.getHeight(), this->draw_image.getWidth(), CV_MAKETYPE(CV_8UC3, this->draw_image.getPixels().getNumChannels()), this->draw_image.getPixels().getData(), 0);
}
//--------------------------------------------------------------
void ofApp::update() {

	ofSeedRandom(39);

	for (int x = 0; x < this->frame.cols; x++) {

		unsigned char value = ofNoise(x * 0.05, ofGetFrameNum() * 0.05) * 255;
		this->frame.at<cv::Vec3b>(0, x) = cv::Vec3b(value, 0, 0);
	}

	for (int x = 0; x < this->frame.cols; x++) {

		for (int y = 1; y < this->frame.rows; y++) {

			int sum = 0;
			int count = 0;

			sum += this->frame.at<cv::Vec3b>(y - 1, x)[0];
			count++;

			if (x >= 0) {

				sum += this->frame.at<cv::Vec3b>(y - 1, x - 1)[0];
				count++;
			}

			if (x < this->frame.rows - 1) {

				sum += this->frame.at<cv::Vec3b>(y - 1, x + 1)[0];
				count++;
			}

			if (y > 1) {

				sum += this->frame.at<cv::Vec3b>(y - 2, x)[0];
				count++;
			}

			int avg = sum / count;
			unsigned char r = 0;
			unsigned char g = 0;
			if (avg > 255) {

				r = 255;
			}
			else if (avg < 0) {

				r = 0;
			}
			else {

				r = avg;
				if (avg > 150) {

					g = (unsigned char)ofMap(avg, 150, 255, 0, 100);
				}

			}

			this->frame.at<cv::Vec3b>(y, x) = cv::Vec3b(r,  g, g * 0.1);
		}
	}

	this->frame *= 1.02;

	cv::resize(this->frame, this->draw_frame, cv::Size(ofGetWidth(), ofGetHeight()));
	this->draw_image.update();
}
//--------------------------------------------------------------
void ofApp::draw() {

	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);
	ofRotate(180);

	this->draw_image.draw(ofGetWidth() * -0.5, ofGetHeight() * -0.5);
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

this->frame = cv::Mat(200, 200, CV_8UC3);

this->draw_image.allocate(ofGetWidth(), ofGetHeight(), OF_IMAGE_COLOR);

this->draw_frame = cv::Mat(this->draw_image.getHeight(), this->draw_image.getWidth(), CV_MAKETYPE(CV_8UC3, this->draw_image.getPixels().getNumChannels()), this->draw_image.getPixels().getData(), 0);

}

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

void ofApp::update() {

ofSeedRandom(39);

for (int x = 0; x < this->frame.cols; x++) {

unsigned char value = ofNoise(x * 0.05, ofGetFrameNum() * 0.05) * 255;

this->frame.at<cv::Vec3b>(0, x) = cv::Vec3b(value, 0, 0);

}

for (int x = 0; x < this->frame.cols; x++) {

for (int y = 1; y < this->frame.rows; y++) {

int sum = 0;

int count = 0;

sum += this->frame.at<cv::Vec3b>(y - 1, x)[0];

count++;

if (x >= 0) {

sum += this->frame.at<cv::Vec3b>(y - 1, x - 1)[0];

count++;

}

if (x < this->frame.rows - 1) {

sum += this->frame.at<cv::Vec3b>(y - 1, x + 1)[0];

count++;

}

if (y > 1) {

sum += this->frame.at<cv::Vec3b>(y - 2, x)[0];

count++;

}

int avg = sum / count;

unsigned char r = 0;

unsigned char g = 0;

if (avg > 255) {

r = 255;

}

else if (avg < 0) {

r = 0;

}

else {

r = avg;

if (avg > 150) {

g = (unsigned char)ofMap(avg, 150, 255, 0, 100);

}

this->frame.at<cv::Vec3b>(y, x) = cv::Vec3b(r, g, g * 0.1);

}

this->frame *= 1.02;

cv::resize(this->frame, this->draw_frame, cv::Size(ofGetWidth(), ofGetHeight()));

this->draw_image.update();

}

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

void ofApp::draw() {

ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

ofRotate(180);

this->draw_image.draw(ofGetWidth() * -0.5, ofGetHeight() * -0.5);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
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2018年11月14日2018年11月14日

Coffee. openFrameworks

[ Video ]

[ About ]
Day 14 Coffee

コーヒーの表面がパーリンノイズでユラユラしてます。誰が何と言おうがコレはコーヒーです。

Coffee surface of the water swaying with Perlin Noise.

[ 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_coffee(ofPoint point);
};

#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_coffee(ofPoint point);

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(39);
}
//--------------------------------------------------------------
void ofApp::update() {

}

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

	for (int x = 60; x < ofGetWidth(); x += 120) {

		for (int y = 60; y < ofGetHeight(); y += 120) {

			this->draw_coffee(ofPoint(x, y));
		}
	}
}

//--------------------------------------------------------------
void ofApp::draw_coffee(ofPoint point) {

	ofPushMatrix();
	ofTranslate(point);

	int radius = 50;

	ofBeginShape();
	for (int deg = 0; deg <= 180; deg += 1) {

		ofVertex(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
	}

	for (float x = -radius; x < radius; x += 1) {

		int y = ofMap(ofNoise((point.x + x) * 0.01 + ofGetFrameNum() * 0.03, point.y * 0.008), 0, 1, 0, -30);
		ofVertex(x, y);
	}
	ofEndShape(true);

	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);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

for (int x = 60; x < ofGetWidth(); x += 120) {

for (int y = 60; y < ofGetHeight(); y += 120) {

this->draw_coffee(ofPoint(x, y));

}

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

void ofApp::draw_coffee(ofPoint point) {

ofPushMatrix();

ofTranslate(point);

int radius = 50;

ofBeginShape();

for (int deg = 0; deg <= 180; deg += 1) {

ofVertex(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));

}

for (float x = -radius; x < radius; x += 1) {

int y = ofMap(ofNoise((point.x + x) * 0.01 + ofGetFrameNum() * 0.03, point.y * 0.008), 0, 1, 0, -30);

ofVertex(x, y);

}

ofEndShape(true);

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
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2018年11月13日2018年11月13日

Black Hole. openFrameworks

[ Video ]

[ About ]
Day 13 Black Hole

openFrameworksで座標計算、GLSLで光球描写のパターン

openFframeworks is computing coordinate, GLSL is drawing light 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 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) {};

	int number_of_location;
	vector<ofPoint> locations;
	vector<float> velocity;

	ofFbo src;
	ofFbo dst;
	ofShader shader;
};

#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) {};

int number_of_location;

vector<ofPoint> locations;

vector<float> velocity;

ofFbo src;

ofFbo dst;

ofShader shader;

};

#include "ofApp.h"

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

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

	ofBackground(0);

	this->number_of_location = 200;
	for (int i = 0; i < this->number_of_location; i++) {

		ofPoint point = ofPoint(ofRandom(-ofGetWidth(), ofGetWidth()), ofRandom(-ofGetHeight(), ofGetHeight()));
		
		this->locations.push_back(point);
		this->velocity.push_back(1.f);
	}

	this->src.allocate(ofGetWidth(), ofGetHeight());
	this->dst.allocate(ofGetWidth(), ofGetHeight());
	this->shader.load("shader/shader.vert", "shader/shader.frag");
}
//--------------------------------------------------------------
void ofApp::update() {

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

		float len = this->locations[i].length();
		if (len < 100) {

			ofPoint point;
			while (point.length() < 100) {

				point = ofPoint(ofRandom(-ofGetWidth(), ofGetWidth()), ofRandom(-ofGetHeight(), ofGetHeight()));
			}
		
			this->locations[i] = point;
			this->velocity[i] = 1.f;
		}
		else {

			this->locations[i] = this->locations[i].normalized() * (len * this->velocity[i]);
			this->velocity[i] *= 0.999f;
		}
	}
}

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

	vector<glm::vec2> targets;
	for (int i = 0; i < this->number_of_location; i++) {

		glm::vec2 target = glm::vec2(this->locations[i].x + ofGetWidth() * 0.5, this->locations[i].y + ofGetHeight() * 0.5);
		targets.push_back(target);
	}

	this->dst.begin();

	this->shader.begin();
	this->shader.setUniform1f("time", ofGetElapsedTimef());
	this->shader.setUniform2f("resolution", ofGetWidth(), ofGetHeight());
	this->shader.setUniform2fv("targets", &targets[0].x, this->number_of_location);
	this->shader.setUniformTexture("fbo", this->src.getTexture(), 1);

	ofDrawRectangle(0, 0, ofGetWidth(), ofGetHeight());

	this->shader.end();
	this->dst.end();

	this->dst.draw(0, 0);
	std::swap(this->src, this->dst);
}

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

	ofGLWindowSettings settings;
	settings.setGLVersion(3, 2);
	settings.setSize(720, 720);
	ofCreateWindow(settings);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(0);

this->number_of_location = 200;

for (int i = 0; i < this->number_of_location; i++) {

ofPoint point = ofPoint(ofRandom(-ofGetWidth(), ofGetWidth()), ofRandom(-ofGetHeight(), ofGetHeight()));

this->locations.push_back(point);

this->velocity.push_back(1.f);

}

this->src.allocate(ofGetWidth(), ofGetHeight());

this->dst.allocate(ofGetWidth(), ofGetHeight());

this->shader.load("shader/shader.vert", "shader/shader.frag");

}

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

void ofApp::update() {

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

float len = this->locations[i].length();

if (len < 100) {

ofPoint point;

while (point.length() < 100) {

point = ofPoint(ofRandom(-ofGetWidth(), ofGetWidth()), ofRandom(-ofGetHeight(), ofGetHeight()));

}

this->locations[i] = point;

this->velocity[i] = 1.f;

}

else {

this->locations[i] = this->locations[i].normalized() * (len * this->velocity[i]);

this->velocity[i] *= 0.999f;

}

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

void ofApp::draw() {

vector<glm::vec2> targets;

for (int i = 0; i < this->number_of_location; i++) {

glm::vec2 target = glm::vec2(this->locations[i].x + ofGetWidth() * 0.5, this->locations[i].y + ofGetHeight() * 0.5);

targets.push_back(target);

}

this->dst.begin();

this->shader.begin();

this->shader.setUniform1f("time", ofGetElapsedTimef());

this->shader.setUniform2f("resolution", ofGetWidth(), ofGetHeight());

this->shader.setUniform2fv("targets", &targets[0].x, this->number_of_location);

this->shader.setUniformTexture("fbo", this->src.getTexture(), 1);

ofDrawRectangle(0, 0, ofGetWidth(), ofGetHeight());

this->shader.end();

this->dst.end();

this->dst.draw(0, 0);

std::swap(this->src, this->dst);

}

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

int main() {

ofGLWindowSettings settings;

settings.setGLVersion(3, 2);

settings.setSize(720, 720);

ofCreateWindow(settings);

ofRunApp(new ofApp());

}

#version 150

uniform mat4 modelViewProjectionMatrix;
in vec4 position;

void main(){
	gl_Position = modelViewProjectionMatrix * position;
}

#version 150

uniform mat4 modelViewProjectionMatrix;

in vec4 position;

void main(){

gl_Position = modelViewProjectionMatrix * position;

}

#version 150

const int number_of_targets = 200;

uniform float time;
uniform vec2 resolution;
uniform vec2 targets[number_of_targets];
uniform sampler2DRect fbo;

out vec4 outputColor;

void main() {

  vec2 p = (gl_FragCoord.xy * 2.0 - resolution) / min(resolution.x, resolution.y);
  vec3 color = vec3(0.0);

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

    vec2 t = vec2(targets[i].x, -targets[i].y) / min(resolution.x, resolution.y) * 2.0;
    t.xy += vec2(-resolution.x, resolution.y) / min(resolution.x, resolution.y);

    float v = 0.005 / length(p - t);
    vec3 c = vec3(smoothstep(0.01, 1.0, v));
    color += c;
  }

  vec4 fbo_value = texture(fbo, vec2(gl_FragCoord.x, gl_FragCoord.y));
  outputColor = vec4(color, 1.0) + fbo_value * 0.85;
}

#version 150

const int number_of_targets = 200;

uniform float time;

uniform vec2 resolution;

uniform vec2 targets[number_of_targets];

uniform sampler2DRect fbo;

out vec4 outputColor;

void main() {

vec2 p = (gl_FragCoord.xy * 2.0 - resolution) / min(resolution.x, resolution.y);

vec3 color = vec3(0.0);

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

vec2 t = vec2(targets[i].x, -targets[i].y) / min(resolution.x, resolution.y) * 2.0;

t.xy += vec2(-resolution.x, resolution.y) / min(resolution.x, resolution.y);

float v = 0.005 / length(p - t);

vec3 c = vec3(smoothstep(0.01, 1.0, v));

color += c;

}

vec4 fbo_value = texture(fbo, vec2(gl_FragCoord.x, gl_FragCoord.y));

outputColor = vec4(color, 1.0) + fbo_value * 0.85;

}

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