codevember – ページ 4 – プログラミング de 落描き

2018年11月20日2018年11月20日

Socks. openFrameworks

[ Video ]

[ About ]
Day 20 Socks

靴下からパーティクルがっ！靴下からっ！パーティクルがっ！ OpenCVでフレーム差分を検知、物理エンジンはofxBox2dです。

I use OpenCV to detect frame difference and physics engine is ofxBox2d.

[ Source ]

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

	ofxBox2d box2d;
	vector<shared_ptr<ofxBox2dCircle>> circles;
	vector<float> circles_life;
	vector<ofColor> circles_color;

	cv::VideoCapture cap;
	ofVec2f cap_size;
	cv::Mat pre_frame;
	cv::Mat frame;
	ofImage image;
};

#pragma once

#include "ofMain.h"

#include "ofxBox2d.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) {};

ofxBox2d box2d;

vector<shared_ptr<ofxBox2dCircle>> circles;

vector<float> circles_life;

vector<ofColor> circles_color;

cv::VideoCapture cap;

ofVec2f cap_size;

cv::Mat pre_frame;

cv::Mat frame;

ofImage image;

};

#include "ofApp.h"

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

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

	ofBackground(239);

	this->box2d.init();
	this->box2d.setGravity(0, 50);
	this->box2d.createBounds();
	this->box2d.setFPS(30);

	this->cap.open("D:\\video\\image41.mp4");
	this->cap_size = ofVec2f(this->cap.get(CV_CAP_PROP_FRAME_WIDTH), this->cap.get(CV_CAP_PROP_FRAME_HEIGHT));
	this->cap_size *= 0.1;

	this->image.allocate(this->cap_size.x, this->cap_size.y, OF_IMAGE_COLOR);
	this->frame = cv::Mat(this->image.getHeight(), this->image.getWidth(), CV_MAKETYPE(CV_8UC3, this->image.getPixels().getNumChannels()), this->image.getPixels().getData(), 0);
}

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

	cv::Mat src;
	this->cap >> src;

	if (src.empty()) {

		this->cap.set(CV_CAP_PROP_POS_FRAMES, 1);
		return;
	}

	cv::cvtColor(src, src, cv::COLOR_BGR2RGB);
	cv::resize(src, this->frame, cv::Size(this->cap_size.x, this->cap_size.y));

	float span = 15;

	if (ofGetFrameNum() > 1) {

		cv::Mat gap = this->pre_frame - this->frame;

		for (int y = 0; y < gap.rows; y += span) {

			cv::Vec3b* gap_value = gap.ptr<cv::Vec3b>(y, 0);
			cv::Vec3b* color_value = this->frame.ptr<cv::Vec3b>(y, 0);
			for (int x = 0; x < gap.cols; x += span) {

				cv::Vec3b gv = gap_value[x];
				cv::Vec3b cv = color_value[x];
				if ((gv[0] + gv[1] + gv[2]) > 32 && cv[0] < 100) {

					auto circle = make_shared<ofxBox2dCircle>();
					circle.get()->setPhysics(3.0, 0.5, 0.1);
					circle.get()->setup(this->box2d.getWorld(), x + ofGetWidth() / 2 - this->image.getWidth() / 2 + ofRandom(-span / 2, span / 2), y + 100 + ofRandom(-span / 2, span / 2), span / 3);
					this->circles.push_back(move(circle));

					this->circles_life.push_back(255);

					ofColor c;
					c.setHsb(ofRandom(255), 200, 255);
					this->circles_color.push_back(c);

				}
			}
		}
	}

	this->frame.copyTo(this->pre_frame);

	this->image.update();
	this->box2d.update();
}

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

	ofSetColor(255);
	this->image.draw(ofGetWidth() / 2 - this->image.getWidth() / 2, 100);

	for (int i = this->circles.size() - 1; i >= 0; i--) {

		this->circles_life[i] -= 4;
		if (this->circles_life[i] < 0) {

			this->circles[i].get()->destroy();
			this->circles.erase(this->circles.begin() + i);
			this->circles_life.erase(this->circles_life.begin() + i);
			this->circles_color.erase(this->circles_color.begin() + i);
		}
		else {

			ofSetColor(this->circles_color[i]);
			ofDrawCircle(this->circles[i].get()->getPosition(), this->circles[i].get()->getRadius());
			ofDrawLine(this->circles[i].get()->getPosition(), this->circles[i].get()->getPosition() - this->circles[i].get()->getVelocity());
		}
	}
}

//--------------------------------------------------------------
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(239);

this->box2d.init();

this->box2d.setGravity(0, 50);

this->box2d.createBounds();

this->box2d.setFPS(30);

this->cap.open("D:\\video\\image41.mp4");

this->cap_size = ofVec2f(this->cap.get(CV_CAP_PROP_FRAME_WIDTH), this->cap.get(CV_CAP_PROP_FRAME_HEIGHT));

this->cap_size *= 0.1;

this->image.allocate(this->cap_size.x, this->cap_size.y, OF_IMAGE_COLOR);

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

}

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

void ofApp::update() {

cv::Mat src;

this->cap >> src;

if (src.empty()) {

this->cap.set(CV_CAP_PROP_POS_FRAMES, 1);

return;

}

cv::cvtColor(src, src, cv::COLOR_BGR2RGB);

cv::resize(src, this->frame, cv::Size(this->cap_size.x, this->cap_size.y));

float span = 15;

if (ofGetFrameNum() > 1) {

cv::Mat gap = this->pre_frame - this->frame;

for (int y = 0; y < gap.rows; y += span) {

cv::Vec3b* gap_value = gap.ptr<cv::Vec3b>(y, 0);

cv::Vec3b* color_value = this->frame.ptr<cv::Vec3b>(y, 0);

for (int x = 0; x < gap.cols; x += span) {

cv::Vec3b gv = gap_value[x];

cv::Vec3b cv = color_value[x];

if ((gv[0] + gv[1] + gv[2]) > 32 && cv[0] < 100) {

auto circle = make_shared<ofxBox2dCircle>();

circle.get()->setPhysics(3.0, 0.5, 0.1);

circle.get()->setup(this->box2d.getWorld(), x + ofGetWidth() / 2 - this->image.getWidth() / 2 + ofRandom(-span / 2, span / 2), y + 100 + ofRandom(-span / 2, span / 2), span / 3);

this->circles.push_back(move(circle));

this->circles_life.push_back(255);

ofColor c;

c.setHsb(ofRandom(255), 200, 255);

this->circles_color.push_back(c);

}

this->frame.copyTo(this->pre_frame);

this->image.update();

this->box2d.update();

}

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

void ofApp::draw() {

ofSetColor(255);

this->image.draw(ofGetWidth() / 2 - this->image.getWidth() / 2, 100);

for (int i = this->circles.size() - 1; i >= 0; i--) {

this->circles_life[i] -= 4;

if (this->circles_life[i] < 0) {

this->circles[i].get()->destroy();

this->circles.erase(this->circles.begin() + i);

this->circles_life.erase(this->circles_life.begin() + i);

this->circles_color.erase(this->circles_color.begin() + i);

}

else {

ofSetColor(this->circles_color[i]);

ofDrawCircle(this->circles[i].get()->getPosition(), this->circles[i].get()->getRadius());

ofDrawLine(this->circles[i].get()->getPosition(), this->circles[i].get()->getPosition() - this->circles[i].get()->getVelocity());

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20181120

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2018年11月19日2018年11月19日

Eggs. openFrameworks

[ Video ]

[ About ]
Day 19 Eggs.

ゆで卵と目玉焼き。
卵の座標計算は下記サイトを参考にさせて頂きました。

卵形の曲線を表す方程式 Ⅴ
http://www.geocities.jp/nyjp07/index_egg5.html

Boiled eggs and fried eggs.

[ 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_egg(ofPoint location, float len, bool fried);
};

#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_egg(ofPoint location, float len, bool fried);

};

#include "ofApp.h"

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

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

	ofBackground(39);
}

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

	ofSeedRandom(39);
}

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

	int len = 72;
	bool fried = false;
	for (int x = len; x < ofGetWidth(); x += len * 2) {

		for (int y = len; y < ofGetHeight(); y += len * 2) {

			this->draw_egg(ofPoint(x, y), len - 10, fried);
			fried = !fried;
		}
	}
	
}

//--------------------------------------------------------------
void ofApp::draw_egg(ofPoint location, float len, bool fried) {

	float a = 1;
	float b = 0.72;
	float c = 0.08;

	ofPushMatrix();
	ofTranslate(location);
	ofRotate(90);

	ofSetColor(239);
	ofBeginShape();
	for (int deg = 0; deg < 360; deg += 1) {

		float x = a * cos(deg * DEG_TO_RAD);
		float y = (b + c * cos(deg * DEG_TO_RAD)) * sin(deg * DEG_TO_RAD);

		float noise_value = fried ? ofMap(ofNoise(location.x * 0.005 + x, location.y * 0.05 + y, ofGetFrameNum() * 0.005), 0, 1, 0.7, 1.2) : 1;

		ofPoint p = ofPoint(x, y) * len * noise_value;

		ofVertex(p);
	}
	ofEndShape();

	if (fried) {

		ofSetColor(220, 220, 39);
		ofDrawCircle(ofPoint(), len * 0.4);
	}
	
	ofPopMatrix();
}

//--------------------------------------------------------------
int main() {
	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(39);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

int len = 72;

bool fried = false;

for (int x = len; x < ofGetWidth(); x += len * 2) {

for (int y = len; y < ofGetHeight(); y += len * 2) {

this->draw_egg(ofPoint(x, y), len - 10, fried);

fried = !fried;

}

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

void ofApp::draw_egg(ofPoint location, float len, bool fried) {

float a = 1;

float b = 0.72;

float c = 0.08;

ofPushMatrix();

ofTranslate(location);

ofRotate(90);

ofSetColor(239);

ofBeginShape();

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

float x = a * cos(deg * DEG_TO_RAD);

float y = (b + c * cos(deg * DEG_TO_RAD)) * sin(deg * DEG_TO_RAD);

float noise_value = fried ? ofMap(ofNoise(location.x * 0.005 + x, location.y * 0.05 + y, ofGetFrameNum() * 0.005), 0, 1, 0.7, 1.2) : 1;

ofPoint p = ofPoint(x, y) * len * noise_value;

ofVertex(p);

}

ofEndShape();

if (fried) {

ofSetColor(220, 220, 39);

ofDrawCircle(ofPoint(), len * 0.4);

}

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
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2018年11月18日2018年11月19日

Paper. openFrameworks

[ Video ]

[ About ]
Day 18 Paper.

紙吹雪。

Confetti.

[ Source ]

#pragma once
#include "ofMain.h"
#include "Confetti.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) {};

	ofEasyCam cam;
	vector<unique_ptr<Confetti>> confettis;
};

#pragma once

#include "ofMain.h"

#include "Confetti.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) {};

ofEasyCam cam;

vector<unique_ptr<Confetti>> confettis;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofEnableDepthTest();

	for (int i = 0; i < 512; i++) {

		unique_ptr<Confetti> confetti(new Confetti());
		this->confettis.push_back(move(confetti));
	}
}

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

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

		this->confettis[i]->update();
	}
}

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

	this->cam.begin();

	ofTranslate(0, 0, -ofGetWidth() / 2);
	ofRotateZ(180);
	ofTranslate(-ofGetWidth() / 2, -ofGetHeight() / 2);

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

		this->confettis[i]->draw();
	}

	this->cam.end();
}

//--------------------------------------------------------------
int main() {
	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofEnableDepthTest();

for (int i = 0; i < 512; i++) {

unique_ptr<Confetti> confetti(new Confetti());

this->confettis.push_back(move(confetti));

}

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

void ofApp::update() {

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

this->confettis[i]->update();

}

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

void ofApp::draw() {

this->cam.begin();

ofTranslate(0, 0, -ofGetWidth() / 2);

ofRotateZ(180);

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

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

this->confettis[i]->draw();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

#pragma once
#include "ofMain.h"

class Confetti
{
public:
	Confetti();
	~Confetti();

	void update();
	void draw();
private:

	int type;
	ofPoint location;
	ofPoint velocity;
	ofPoint rotate;
	ofColor body_color;
};

#pragma once

#include "ofMain.h"

class Confetti

{

public:

Confetti();

~Confetti();

void update();

void draw();

private:

int type;

ofPoint location;

ofPoint velocity;

ofPoint rotate;

ofColor body_color;

};

#include "Confetti.h"

Confetti::Confetti() {

	this->type = ofRandom(3);
	this->location = ofPoint(ofRandom(ofGetWidth()), ofRandom(ofGetHeight(), ofRandom(ofGetWidth())));
	this->velocity = ofPoint(ofRandom(-3, 3), ofRandom(0.5, 3), ofRandom(-3, 3));
	this->rotate = ofPoint(0, 0, 0);
	this->body_color.setHsb(ofRandom(255), 255, 255);
}

Confetti::~Confetti() {

}

void Confetti::update() {

	this->location += this->velocity;

	if (this->location.x < 0) {

		this->location.x = ofGetWidth();
	}
	else if (this->location.x > ofGetWidth()) {

		this->location.x = 0;
	}

	if (this->location.z < 0) {

		this->location.z = ofGetWidth();;
	}
	else if (this->location.z > ofGetWidth()) {

		this->location.z = 0;
	}

	if (this->location.y > ofGetHeight()) {

		this->location.y = 0;
	}

	this->rotate += this->velocity;
}

void Confetti::draw() {

	ofPushMatrix();
	ofTranslate(this->location);

	ofRotateX(this->rotate.x);
	ofRotateY(this->rotate.y);
	ofRotateZ(this->rotate.z);

	ofSetColor(this->body_color);

	switch(this->type) {
	case 0:

		ofDrawRectangle(ofPoint(), 15, 15);
		break;
	case 1:

		ofDrawCircle(ofPoint(), 7.5);
		break;
	case 2:

		ofBeginShape();
		for (int deg = 0; deg < 360; deg += 36) {

			deg % 72 == 0 ? ofVertex(15 * cos(deg * DEG_TO_RAD), 15 * sin(deg * DEG_TO_RAD)) : ofVertex(7.5 * cos(deg * DEG_TO_RAD), 7.5 * sin(deg * DEG_TO_RAD));
		}
		ofEndShape(true);

		break;
	}

	ofPopMatrix();
}

#include "Confetti.h"

Confetti::Confetti() {

this->type = ofRandom(3);

this->location = ofPoint(ofRandom(ofGetWidth()), ofRandom(ofGetHeight(), ofRandom(ofGetWidth())));

this->velocity = ofPoint(ofRandom(-3, 3), ofRandom(0.5, 3), ofRandom(-3, 3));

this->rotate = ofPoint(0, 0, 0);

this->body_color.setHsb(ofRandom(255), 255, 255);

}

Confetti::~Confetti() {

}

void Confetti::update() {

this->location += this->velocity;

if (this->location.x < 0) {

this->location.x = ofGetWidth();

}

else if (this->location.x > ofGetWidth()) {

this->location.x = 0;

}

if (this->location.z < 0) {

this->location.z = ofGetWidth();;

}

else if (this->location.z > ofGetWidth()) {

this->location.z = 0;

}

if (this->location.y > ofGetHeight()) {

this->location.y = 0;

}

this->rotate += this->velocity;

}

void Confetti::draw() {

ofPushMatrix();

ofTranslate(this->location);

ofRotateX(this->rotate.x);

ofRotateY(this->rotate.y);

ofRotateZ(this->rotate.z);

ofSetColor(this->body_color);

switch(this->type) {

case 0:

ofDrawRectangle(ofPoint(), 15, 15);

break;

case 1:

ofDrawCircle(ofPoint(), 7.5);

break;

case 2:

ofBeginShape();

for (int deg = 0; deg < 360; deg += 36) {

deg % 72 == 0 ? ofVertex(15 * cos(deg * DEG_TO_RAD), 15 * sin(deg * DEG_TO_RAD)) : ofVertex(7.5 * cos(deg * DEG_TO_RAD), 7.5 * sin(deg * DEG_TO_RAD));

}

ofEndShape(true);

break;

}

ofPopMatrix();

}

[ Link ]
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