openframeworks – ページ 650 – プログラミング de 落描き

2018年4月7日2018年4月6日

Clocks + MP4 openFrameworks OpenCv

[ Video ]

[ About ]
昨日の自分の動画を見ていて、視覚的な絵を足したら面白いなと思いつき。

動画の読み込みや合成は、OpenCVを使って画像処理をしています。起動時(setup内)で、動画から全フレーム取り出し、リサイズ、配列へ格納しています。

そのあとはNoise関数でそれぞれに描写するフレーム番号を決定、用意しておいた配列から対応するフレーム画像をコピー・結合(今回の場合は25枚)して大きな1枚の画像を生成しています。

1枚に結合して描写する事によって、思っていたより早く動いてくれました。今回はリアルタイムにキャプチャした動画を挙げているので、実際の動作速度です。

[ 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 windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	// Make Method
	void draw_clock(ofPoint point, int frame_number);

	// Make Member
	ofFbo fbo;

	cv::VideoCapture cap;
	cv::Size cap_size;
	vector<cv::Mat> frames;

	cv::Mat blend_frame;
	ofImage blend_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 windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

// Make Method

void draw_clock(ofPoint point, int frame_number);

// Make Member

ofFbo fbo;

cv::VideoCapture cap;

cv::Size cap_size;

vector<cv::Mat> frames;

cv::Mat blend_frame;

ofImage blend_image;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofBackground(39);
	ofSetWindowTitle("Insta");

	this->cap.open("movie_file_path.mp4");
	this->cap_size = cv::Size(256, 144);

	while (true) {

		cv::Mat src, mini_src;
		this->cap >> src;
		if (src.empty()) {

			break;
		}
		cv::resize(src, mini_src, this->cap_size);
		cv::cvtColor(mini_src, mini_src, CV_RGB2BGR);

		this->frames.push_back(mini_src);
	}

	this->blend_image.allocate(ofGetWidth(), ofGetHeight(), OF_IMAGE_COLOR);
	this->blend_frame = cv::Mat(this->blend_image.getHeight(), this->blend_image.getWidth(), CV_MAKETYPE(CV_8UC3, this->blend_image.getPixels().getNumChannels()), this->blend_image.getPixels().getData(), 0);
}

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

	cv::Rect rect;
	rect.width = this->cap_size.width;
	rect.height = this->cap_size.height;
	for (int x = 0; x < this->blend_image.getWidth(); x += rect.width) {
		
		for (int y = 0; y < this->blend_image.getHeight(); y += rect.height) {

			rect.x = x;
			rect.y = y;

			float noise_value = ofNoise(x * 0.005, y * 0.005, ofGetFrameNum() * 0.001);
			int frame_number = noise_value * this->frames.size();

			cv::Mat roi(this->blend_frame, rect);
			this->frames[frame_number].copyTo(roi);
		}
	}

	this->blend_image.update();
}

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

	ofSetColor(255);
	this->blend_image.draw(0, 0);

	ofSetColor(239, 239);
	for (int x = 0; x < this->blend_image.getWidth(); x += this->cap_size.width) {

		for (int y = 0; y < this->blend_image.getHeight(); y += this->cap_size.height) {

			float noise_value = ofNoise(x * 0.005, y * 0.005, ofGetFrameNum() * 0.001);
			int frame_number = noise_value * this->frames.size();

			this->draw_clock(ofPoint(x + this->cap_size.width / 2, y + this->cap_size.height / 2), frame_number);
		}
	}
}

//--------------------------------------------------------------
void ofApp::draw_clock(ofPoint point, int frame_number) {

	int radius = 60;

	int minute = ofMap(frame_number, 0, this->frames.size() - 1, 0, 720);
	int time = minute / 60;
	minute = minute - time * 60;
	int time_deg = time * 30 + ofMap(minute, 0, 59, 0, 30);
	int minute_deg = minute * 6;

	ofPushMatrix();
	ofTranslate(point);
	ofRotate(-45);

	ofSetLineWidth(3);
	ofNoFill();

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

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

	ofSetLineWidth(5);
	ofDrawLine(ofPoint(), ofPoint(radius * 0.6 * cos(time_deg * DEG_TO_RAD), radius * 0.6 * sin(time_deg * DEG_TO_RAD)));

	ofSetLineWidth(3);
	ofDrawLine(ofPoint(), ofPoint(radius * 0.8 * cos(minute_deg * DEG_TO_RAD), radius * 0.8 * sin(minute_deg * DEG_TO_RAD)));

	ofFill();
	ofDrawCircle(ofPoint(), 5);

	ofPopMatrix();
}

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

	ofSetupOpenGL(1280, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(39);

ofSetWindowTitle("Insta");

this->cap.open("movie_file_path.mp4");

this->cap_size = cv::Size(256, 144);

while (true) {

cv::Mat src, mini_src;

this->cap >> src;

if (src.empty()) {

break;

}

cv::resize(src, mini_src, this->cap_size);

cv::cvtColor(mini_src, mini_src, CV_RGB2BGR);

this->frames.push_back(mini_src);

}

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

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

}

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

void ofApp::update() {

cv::Rect rect;

rect.width = this->cap_size.width;

rect.height = this->cap_size.height;

for (int x = 0; x < this->blend_image.getWidth(); x += rect.width) {

for (int y = 0; y < this->blend_image.getHeight(); y += rect.height) {

rect.x = x;

rect.y = y;

float noise_value = ofNoise(x * 0.005, y * 0.005, ofGetFrameNum() * 0.001);

int frame_number = noise_value * this->frames.size();

cv::Mat roi(this->blend_frame, rect);

this->frames[frame_number].copyTo(roi);

}

this->blend_image.update();

}

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

void ofApp::draw() {

ofSetColor(255);

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

ofSetColor(239, 239);

for (int x = 0; x < this->blend_image.getWidth(); x += this->cap_size.width) {

for (int y = 0; y < this->blend_image.getHeight(); y += this->cap_size.height) {

float noise_value = ofNoise(x * 0.005, y * 0.005, ofGetFrameNum() * 0.001);

int frame_number = noise_value * this->frames.size();

this->draw_clock(ofPoint(x + this->cap_size.width / 2, y + this->cap_size.height / 2), frame_number);

}

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

void ofApp::draw_clock(ofPoint point, int frame_number) {

int radius = 60;

int minute = ofMap(frame_number, 0, this->frames.size() - 1, 0, 720);

int time = minute / 60;

minute = minute - time * 60;

int time_deg = time * 30 + ofMap(minute, 0, 59, 0, 30);

int minute_deg = minute * 6;

ofPushMatrix();

ofTranslate(point);

ofRotate(-45);

ofSetLineWidth(3);

ofNoFill();

ofBeginShape();

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

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

}

ofEndShape(true);

ofSetLineWidth(5);

ofDrawLine(ofPoint(), ofPoint(radius * 0.6 * cos(time_deg * DEG_TO_RAD), radius * 0.6 * sin(time_deg * DEG_TO_RAD)));

ofSetLineWidth(3);

ofDrawLine(ofPoint(), ofPoint(radius * 0.8 * cos(minute_deg * DEG_TO_RAD), radius * 0.8 * sin(minute_deg * DEG_TO_RAD)));

ofFill();

ofDrawCircle(ofPoint(), 5);

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(1280, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180406_02

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2018年4月6日2018年4月5日

Clocks openFrameworks

[ Video ]

[ About ]
Noiseの値を動画のフレーム数に置き換えて、ピルセルごとで時間の歪みがある動画を作った事があったのですが、そもそも直感的にわかる時計に置き換えたら面白いかなと思い付き。

良き。

[ 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) {};

	// Make Method
	void draw_clock(ofPoint point, int minute, int radius);

	// Make Variable
	ofTrueTypeFont font;
};

#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) {};

// Make Method

void draw_clock(ofPoint point, int minute, int radius);

// Make Variable

ofTrueTypeFont font;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofBackground(239);
	ofSetWindowTitle("Insta");

	ofNoFill();
	ofEnableSmoothing();
	ofSetColor(39);

	this->font.loadFont("fonts/Kazesawa-Extrabold.ttf", 16, true, false, true);
}

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

}

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

	int span = 60;
	for (int x = span; x < ofGetWidth() + span; x += span * 2) {

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

			int minute = ofNoise(x * 0.005, y * 0.005, ofGetFrameNum() * 0.005) * 720;
			this->draw_clock(ofPoint(x, y), minute, span * 0.95);
		}
	}
}

//--------------------------------------------------------------
void ofApp::draw_clock(ofPoint point, int minute, int radius){

	ofPushMatrix();
	ofTranslate(point);

	ofNoFill();

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

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

	int time = minute / 60;
	minute = minute - time * 60;
	int time_deg = time * 30 + ofMap(minute, 0, 59, 0, 30);
	int minute_deg = minute * 6;

	ofSetLineWidth(5);
	ofDrawLine(ofPoint(), ofPoint(radius * 0.6 * cos(time_deg * DEG_TO_RAD), radius * 0.6 * sin(time_deg * DEG_TO_RAD)));

	ofSetLineWidth(3);
	ofDrawLine(ofPoint(), ofPoint(radius * 0.8 * cos(minute_deg * DEG_TO_RAD), radius * 0.8 * sin(minute_deg * DEG_TO_RAD)));

	ofFill();
	ofDrawCircle(ofPoint(), 5);

	ofPopMatrix();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(239);

ofSetWindowTitle("Insta");

ofNoFill();

ofEnableSmoothing();

ofSetColor(39);

this->font.loadFont("fonts/Kazesawa-Extrabold.ttf", 16, true, false, true);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

int span = 60;

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

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

int minute = ofNoise(x * 0.005, y * 0.005, ofGetFrameNum() * 0.005) * 720;

this->draw_clock(ofPoint(x, y), minute, span * 0.95);

}

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

void ofApp::draw_clock(ofPoint point, int minute, int radius){

ofPushMatrix();

ofTranslate(point);

ofNoFill();

ofBeginShape();

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

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

}

ofEndShape(true);

int time = minute / 60;

minute = minute - time * 60;

int time_deg = time * 30 + ofMap(minute, 0, 59, 0, 30);

int minute_deg = minute * 6;

ofSetLineWidth(5);

ofDrawLine(ofPoint(), ofPoint(radius * 0.6 * cos(time_deg * DEG_TO_RAD), radius * 0.6 * sin(time_deg * DEG_TO_RAD)));

ofSetLineWidth(3);

ofDrawLine(ofPoint(), ofPoint(radius * 0.8 * cos(minute_deg * DEG_TO_RAD), radius * 0.8 * sin(minute_deg * DEG_TO_RAD)));

ofFill();

ofDrawCircle(ofPoint(), 5);

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180405

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2018年4月5日2018年4月4日

Box枠枠Line openFrameworks

[ Video ]

[ About ]
Boxの枠を描写してしています。それぞれの枠上の座標でNoise関数を使い、描写する/しないを分けているので、部分的に描写されます。

視点によって微妙に見えてくるものが違ってくるので、ぼーっと眺めていると面白いかと思います。

[ 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;
	void draw_box(ofPoint point, float length);
	void draw_line(ofPoint p_1, ofPoint p_2);
};

#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;

void draw_box(ofPoint point, float length);

void draw_line(ofPoint p_1, ofPoint p_2);

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofBackground(39);
	ofSetWindowTitle("Insta");

	ofEnableDepthTest();
}

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

}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.5);

	int length = 250;
	int span = 50;
	for (int x = -length / 2 + span / 2; x <= length / 2 - span / 2; x += span) {

		for (int y = -length / 2 + span / 2; y <= length / 2 - span / 2; y += span) {

			for (int z = -length / 2 + span / 2; z <= length / 2 - span / 2; z += span) {

				this->draw_box(ofPoint(x, y, z), span);
			}
		}
	}

	this->cam.end();
}

//--------------------------------------------------------------
void ofApp::draw_box(ofPoint point, float length) {

	for (int x = point.x - length / 2; x < point.x + length / 2; x += 1) {

		int y_1 = point.y - length / 2;
		int y_2 = point.y + length / 2;
		int z_1 = point.z - length / 2;
		int z_2 = point.z + length / 2;

		this->draw_line(ofPoint(x, y_1, z_1), ofPoint(x + 1, y_1, z_1));
		this->draw_line(ofPoint(x, y_1, z_2), ofPoint(x + 1, y_1, z_2));
		this->draw_line(ofPoint(x, y_2, z_1), ofPoint(x + 1, y_2, z_1));
		this->draw_line(ofPoint(x, y_2, z_2), ofPoint(x + 1, y_2, z_2));
	}

	for (int y = point.y - length / 2; y < point.y + length / 2; y += 1) {

		int x_1 = point.x - length / 2;
		int x_2 = point.x + length / 2;
		int z_1 = point.z - length / 2;
		int z_2 = point.z + length / 2;

		this->draw_line(ofPoint(x_1, y, z_1), ofPoint(x_1, y + 1, z_1));
		this->draw_line(ofPoint(x_1, y, z_2), ofPoint(x_1, y + 1, z_2));
		this->draw_line(ofPoint(x_2, y, z_1), ofPoint(x_2, y + 1, z_1));
		this->draw_line(ofPoint(x_2, y, z_2), ofPoint(x_2, y + 1, z_2));
	}

	for (int z = point.z - length / 2; z < point.z + length / 2; z += 1) {

		int x_1 = point.x - length / 2;
		int x_2 = point.x + length / 2;
		int y_1 = point.y - length / 2;
		int y_2 = point.y + length / 2;

		this->draw_line(ofPoint(x_1, y_1, z), ofPoint(x_1, y_1, z + 1));
		this->draw_line(ofPoint(x_1, y_2, z), ofPoint(x_1, y_2, z + 1));
		this->draw_line(ofPoint(x_2, y_1, z), ofPoint(x_2, y_1, z + 1));
		this->draw_line(ofPoint(x_2, y_2, z), ofPoint(x_2, y_2, z + 1));
	}
}

//--------------------------------------------------------------
void ofApp::draw_line(ofPoint p_1, ofPoint p_2) {

	float noise_value = ofNoise(p_1.x * 0.005, p_1.y * 0.005 + ofGetFrameNum() * 0.025, p_1.z * 0.005);
	if (noise_value > 0.5) {
	
		ofSetColor(239, ofMap(noise_value, 0, 1, 0, 255));
		ofDrawLine(p_1, p_2);
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(39);

ofSetWindowTitle("Insta");

ofEnableDepthTest();

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.5);

int length = 250;

int span = 50;

for (int x = -length / 2 + span / 2; x <= length / 2 - span / 2; x += span) {

for (int y = -length / 2 + span / 2; y <= length / 2 - span / 2; y += span) {

for (int z = -length / 2 + span / 2; z <= length / 2 - span / 2; z += span) {

this->draw_box(ofPoint(x, y, z), span);

}

this->cam.end();

}

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

void ofApp::draw_box(ofPoint point, float length) {

for (int x = point.x - length / 2; x < point.x + length / 2; x += 1) {

int y_1 = point.y - length / 2;

int y_2 = point.y + length / 2;

int z_1 = point.z - length / 2;

int z_2 = point.z + length / 2;

this->draw_line(ofPoint(x, y_1, z_1), ofPoint(x + 1, y_1, z_1));

this->draw_line(ofPoint(x, y_1, z_2), ofPoint(x + 1, y_1, z_2));

this->draw_line(ofPoint(x, y_2, z_1), ofPoint(x + 1, y_2, z_1));

this->draw_line(ofPoint(x, y_2, z_2), ofPoint(x + 1, y_2, z_2));

}

for (int y = point.y - length / 2; y < point.y + length / 2; y += 1) {

int x_1 = point.x - length / 2;

int x_2 = point.x + length / 2;

int z_1 = point.z - length / 2;

int z_2 = point.z + length / 2;

this->draw_line(ofPoint(x_1, y, z_1), ofPoint(x_1, y + 1, z_1));

this->draw_line(ofPoint(x_1, y, z_2), ofPoint(x_1, y + 1, z_2));

this->draw_line(ofPoint(x_2, y, z_1), ofPoint(x_2, y + 1, z_1));

this->draw_line(ofPoint(x_2, y, z_2), ofPoint(x_2, y + 1, z_2));

}

for (int z = point.z - length / 2; z < point.z + length / 2; z += 1) {

int x_1 = point.x - length / 2;

int x_2 = point.x + length / 2;

int y_1 = point.y - length / 2;

int y_2 = point.y + length / 2;

this->draw_line(ofPoint(x_1, y_1, z), ofPoint(x_1, y_1, z + 1));

this->draw_line(ofPoint(x_1, y_2, z), ofPoint(x_1, y_2, z + 1));

this->draw_line(ofPoint(x_2, y_1, z), ofPoint(x_2, y_1, z + 1));

this->draw_line(ofPoint(x_2, y_2, z), ofPoint(x_2, y_2, z + 1));

}

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

void ofApp::draw_line(ofPoint p_1, ofPoint p_2) {

float noise_value = ofNoise(p_1.x * 0.005, p_1.y * 0.005 + ofGetFrameNum() * 0.025, p_1.z * 0.005);

if (noise_value > 0.5) {

ofSetColor(239, ofMap(noise_value, 0, 1, 0, 255));

ofDrawLine(p_1, p_2);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180404

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