opencv – プログラミング de 落描き

2022年7月10日

Movie on torus. Draw by openFrameworks

[ Video ]

[ About ]
トーラスの上の動画。

Movie on torus.

[ 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) {};

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

	ofEasyCam cam;
	vector<ofMesh> mesh_list;
	vector<ofMesh> line_list;

	cv::VideoCapture cap;
	cv::Size cap_size;
	int number_of_frames;
	vector<cv::Mat> mat_list;

	ofImage image;
	cv::Mat mat;
};

#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) {};

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

ofEasyCam cam;

vector<ofMesh> mesh_list;

vector<ofMesh> line_list;

cv::VideoCapture cap;

cv::Size cap_size;

int number_of_frames;

vector<cv::Mat> mat_list;

ofImage image;

cv::Mat mat;

};

#include "ofApp.h"	

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

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

	ofBackground(255);
	ofSetLineWidth(2);
	ofEnableDepthTest();

	this->cap.open("D:\\mp4\\MOV_0324.mp4");
	this->cap_size = cv::Size(128, 72);

	this->image.allocate(this->cap_size.width, this->cap_size.height, OF_IMAGE_COLOR);
	this->mat = cv::Mat(cv::Size(this->image.getWidth(), this->image.getHeight()), CV_MAKETYPE(CV_8UC3, this->image.getPixels().getNumChannels()), this->image.getPixels().getData(), 0);

	this->number_of_frames = this->cap.get(cv::CAP_PROP_FRAME_COUNT);// -skip_frame;
	for (int i = 0; i < this->number_of_frames; i++) {

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

			continue;
		}

		cv::resize(src, tmp, this->cap_size);
		cv::cvtColor(tmp, tmp, cv::COLOR_BGR2RGB);

		this->mat_list.push_back(tmp);
	}
}

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

	ofSeedRandom(39);

	this->mesh_list.clear();
	this->line_list.clear();

	float R = 300;
	int v_span = 18;
	int u_span = 36;

	for (int v = 0; v < 360; v += v_span) {

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

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

			auto noise_seed = ofRandom(1000);
			auto r = 80.f;
			auto noise_location = this->make_point(R, 90, u + u_span * 0.5, v);
			auto noise_value = ofNoise(noise_location.x * 0.001, noise_location.z * 0.001, noise_location.y * 0.002 + ofGetFrameNum() * 0.02);
			if (noise_value > 0.5) { 

				auto random_noise_value = ofNoise(noise_seed, ofGetFrameNum() * 0.005);
				r = 80.f + ofMap(random_noise_value, 0, 1, 0, 100) * ofMap(noise_value, 0.5, 1, 0, 1);
			}

			vector<glm::vec3> vertices;
			vertices.push_back(this->make_point(R, r, u, v - v_span * 0.5));
			vertices.push_back(this->make_point(R, r, u + u_span, v - v_span * 0.5));
			vertices.push_back(this->make_point(R, r, u + u_span, v + v_span * 0.5));
			vertices.push_back(this->make_point(R, r, u, v + v_span * 0.5));

			mesh.addVertices(vertices);
			
			mesh.addTexCoord(glm::vec3(this->cap_size.width, 0, 0));
			mesh.addTexCoord(glm::vec3(this->cap_size.width, this->cap_size.height, 0));
			mesh.addTexCoord(glm::vec3(0, this->cap_size.height, 0));
			mesh.addTexCoord(glm::vec3(0, 0, 0));
			
			mesh.addIndex(0); mesh.addIndex(1); mesh.addIndex(2);
			mesh.addIndex(0); mesh.addIndex(2); mesh.addIndex(3);

			line.addVertices(vertices);

			line.addIndex(0); line.addIndex(1);
			line.addIndex(1); line.addIndex(2);
			line.addIndex(2); line.addIndex(3);
			line.addIndex(3); line.addIndex(0);

			this->mesh_list.push_back(mesh);
			this->line_list.push_back(line);
		}
	}
}

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

	this->cam.begin();
	ofRotateZ(ofGetFrameNum() * 0.22222);

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

		ofSetColor(255);
		ofFill();
		this->mat_list[(int)(ofRandom(1000) + ofGetFrameNum()) % this->mat_list.size()].copyTo(this->mat);
		this->image.update();

		this->image.bind();
		this->mesh_list[i].draw();
		this->image.unbind();

		ofSetColor(255);
		ofNoFill();
		this->line_list[i].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(60);

ofSetWindowTitle("openFrameworks");

ofBackground(255);

ofSetLineWidth(2);

ofEnableDepthTest();

this->cap.open("D:\\mp4\\MOV_0324.mp4");

this->cap_size = cv::Size(128, 72);

this->image.allocate(this->cap_size.width, this->cap_size.height, OF_IMAGE_COLOR);

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

this->number_of_frames = this->cap.get(cv::CAP_PROP_FRAME_COUNT);// -skip_frame;

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

cv::Mat src, tmp;

this->cap >> src;

if (src.empty()) {

continue;

}

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

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

this->mat_list.push_back(tmp);

}

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

void ofApp::update() {

ofSeedRandom(39);

this->mesh_list.clear();

this->line_list.clear();

float R = 300;

int v_span = 18;

int u_span = 36;

for (int v = 0; v < 360; v += v_span) {

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

ofMesh mesh, line;

line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

auto noise_seed = ofRandom(1000);

auto r = 80.f;

auto noise_location = this->make_point(R, 90, u + u_span * 0.5, v);

auto noise_value = ofNoise(noise_location.x * 0.001, noise_location.z * 0.001, noise_location.y * 0.002 + ofGetFrameNum() * 0.02);

if (noise_value > 0.5) {

auto random_noise_value = ofNoise(noise_seed, ofGetFrameNum() * 0.005);

r = 80.f + ofMap(random_noise_value, 0, 1, 0, 100) * ofMap(noise_value, 0.5, 1, 0, 1);

}

vector<glm::vec3> vertices;

vertices.push_back(this->make_point(R, r, u, v - v_span * 0.5));

vertices.push_back(this->make_point(R, r, u + u_span, v - v_span * 0.5));

vertices.push_back(this->make_point(R, r, u + u_span, v + v_span * 0.5));

vertices.push_back(this->make_point(R, r, u, v + v_span * 0.5));

mesh.addVertices(vertices);

mesh.addTexCoord(glm::vec3(this->cap_size.width, 0, 0));

mesh.addTexCoord(glm::vec3(this->cap_size.width, this->cap_size.height, 0));

mesh.addTexCoord(glm::vec3(0, this->cap_size.height, 0));

mesh.addTexCoord(glm::vec3(0, 0, 0));

mesh.addIndex(0); mesh.addIndex(1); mesh.addIndex(2);

mesh.addIndex(0); mesh.addIndex(2); mesh.addIndex(3);

line.addVertices(vertices);

line.addIndex(0); line.addIndex(1);

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

line.addIndex(2); line.addIndex(3);

line.addIndex(3); line.addIndex(0);

this->mesh_list.push_back(mesh);

this->line_list.push_back(line);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateZ(ofGetFrameNum() * 0.22222);

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

ofSetColor(255);

ofFill();

this->mat_list[(int)(ofRandom(1000) + ofGetFrameNum()) % this->mat_list.size()].copyTo(this->mat);

this->image.update();

this->image.bind();

this->mesh_list[i].draw();

this->image.unbind();

ofSetColor(255);

ofNoFill();

this->line_list[i].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/Insta20220710

2022年4月20日

Video fragmentation. Draw by openFrameworks

[ Video ]

[ About ]
動画の断片化。

Video fragmentation.

[ 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) {};

	ofEasyCam cam;

	cv::VideoCapture cap;
	cv::Size cap_size;

	ofImage image;
	cv::Mat frame;
};

#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) {};

ofEasyCam cam;

cv::VideoCapture cap;

cv::Size cap_size;

ofImage image;

cv::Mat frame;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofSetLineWidth(2);
	ofEnableDepthTest();

	this->cap.open("D:\\MP4\\MOV_1030.mp4");
	this->cap_size = cv::Size(1280, 720);

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

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

	ofSeedRandom(39);

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

		this->cap.set(cv::CAP_PROP_POS_FRAMES, 0);
		return;
	}

	cv::cvtColor(src, src, cv::COLOR_BGR2RGB);
	cv::resize(src, this->frame, this->cap_size);
	cv::flip(this->frame, this->frame, 0);

	this->image.update();
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum());
	ofTranslate(-640, -360);

	int span = 40;

	vector<ofMesh> mesh_list;
	for (int x = 0; x < 1280; x += span) {

		for (int y = 0; y < 720; y += span) {

			ofMesh mesh;

			mesh.addVertex(glm::vec3(x, y, 0));
			mesh.addVertex(glm::vec3(x + span, y, 0));
			mesh.addVertex(glm::vec3(x + span, y + span, 0));
			mesh.addVertex(glm::vec3(x, y + span, 0));

			mesh.addTexCoord(glm::vec3(x, y, 0));
			mesh.addTexCoord(glm::vec3(x + span, y, 0));
			mesh.addTexCoord(glm::vec3(x + span, y + span, 0));
			mesh.addTexCoord(glm::vec3(x, y + span, 0));

			mesh.addIndex(0); mesh.addIndex(1); mesh.addIndex(2);
			mesh.addIndex(0); mesh.addIndex(2); mesh.addIndex(3);

			mesh_list.push_back(mesh);
		}
	}

	for (auto& mesh : mesh_list) {

		auto rotate = glm::vec3(ofRandom(360), ofRandom(360), ofRandom(360));
		auto speed = glm::vec3(ofRandom(5, 10), ofRandom(5, 10), ofRandom(5, 10));

		auto center = glm::vec3(mesh.getVertex(0).x + span * 0.5, mesh.getVertex(0).y + span * 0.5, 0);
		auto tmp_center = center;

		mesh.setVertex(0, mesh.getVertex(0) - center);
		mesh.setVertex(1, mesh.getVertex(1) - center);
		mesh.setVertex(2, mesh.getVertex(2) - center);
		mesh.setVertex(3, mesh.getVertex(3) - center);

		auto noise_value = ofNoise(glm::vec4(center * 0.001, ofGetFrameNum() * 0.005));
		if (noise_value < 0.48) {

			tmp_center += glm::vec3(0, 0, -250);
			rotate = glm::vec3();
		}
		else if (noise_value < 0.52) {

			tmp_center += glm::vec3(0, 0, ofMap(noise_value, 0.48, 0.52, -250, 250));
			rotate.x += ofGetFrameNum() * speed.x;
			rotate.y += ofGetFrameNum() * speed.y;
			rotate.z += ofGetFrameNum() * speed.z;
		}
		else {

			tmp_center += glm::vec3(0, 0, 250);
			rotate = glm::vec3();
		}

		ofPushMatrix();
		ofTranslate(tmp_center);
		ofRotateZ(rotate.z);
		ofRotateY(rotate.y);
		ofRotateX(rotate.x);

		ofSetColor(255);
		this->image.bind();
		mesh.draw();
		this->image.unbind();

		ofMesh line;
		line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
		if (noise_value > 0.48 && noise_value < 0.52) {

			line.addVertex(mesh.getVertex(0));
			line.addVertex(mesh.getVertex(1));
			line.addVertex(mesh.getVertex(2));
			line.addVertex(mesh.getVertex(3));

			line.addIndex(0); line.addIndex(1);
			line.addIndex(1); line.addIndex(2);
			line.addIndex(2); line.addIndex(3);
			line.addIndex(3); line.addIndex(0);
		}
		else {

			auto top_noise_value = ofNoise(glm::vec4((center + glm::vec3(0, span, 0)) * 0.001, ofGetFrameNum() * 0.005));
			if ((top_noise_value > 0.48 && top_noise_value < 0.52 || center.y >= 720 - span * 0.5) ) {

				line.addVertex(mesh.getVertex(2));
				line.addVertex(mesh.getVertex(3));

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

			auto bottom_noise_value = ofNoise(glm::vec4((center - glm::vec3(0, span, 0)) * 0.001, ofGetFrameNum() * 0.005));
			if (bottom_noise_value > 0.48 && bottom_noise_value < 0.52 || center.y <= span * 0.5) {

				line.addVertex(mesh.getVertex(0));
				line.addVertex(mesh.getVertex(1));

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

			auto right_noise_value = ofNoise(glm::vec4((center + glm::vec3(span, 0, 0)) * 0.001, ofGetFrameNum() * 0.005));
			if (right_noise_value > 0.48 && right_noise_value < 0.52 || center.x >= 1280 - span * 0.5) {

				line.addVertex(mesh.getVertex(1));
				line.addVertex(mesh.getVertex(2));

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

			auto left_noise_value = ofNoise(glm::vec4((center -	glm::vec3(span, 0, 0)) * 0.001, ofGetFrameNum() * 0.005));
			if (left_noise_value > 0.48 && left_noise_value < 0.52 || center.x <= span * 0.5) {

				line.addVertex(mesh.getVertex(3));
				line.addVertex(mesh.getVertex(0));

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

		line.drawWireframe();
		

		ofPopMatrix();
	}

	this->cam.end();
}

//--------------------------------------------------------------
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(0);

ofSetLineWidth(2);

ofEnableDepthTest();

this->cap.open("D:\\MP4\\MOV_1030.mp4");

this->cap_size = cv::Size(1280, 720);

this->image.allocate(this->cap_size.width, this->cap_size.height, OF_IMAGE_COLOR);

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

}

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

void ofApp::update() {

ofSeedRandom(39);

cv::Mat src;

this->cap >> src;

if (src.empty()) {

this->cap.set(cv::CAP_PROP_POS_FRAMES, 0);

return;

}

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

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

cv::flip(this->frame, this->frame, 0);

this->image.update();

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum());

ofTranslate(-640, -360);

int span = 40;

vector<ofMesh> mesh_list;

for (int x = 0; x < 1280; x += span) {

for (int y = 0; y < 720; y += span) {

ofMesh mesh;

mesh.addVertex(glm::vec3(x, y, 0));

mesh.addVertex(glm::vec3(x + span, y, 0));

mesh.addVertex(glm::vec3(x + span, y + span, 0));

mesh.addVertex(glm::vec3(x, y + span, 0));

mesh.addTexCoord(glm::vec3(x, y, 0));

mesh.addTexCoord(glm::vec3(x + span, y, 0));

mesh.addTexCoord(glm::vec3(x + span, y + span, 0));

mesh.addTexCoord(glm::vec3(x, y + span, 0));

mesh.addIndex(0); mesh.addIndex(1); mesh.addIndex(2);

mesh.addIndex(0); mesh.addIndex(2); mesh.addIndex(3);

mesh_list.push_back(mesh);

}

for (auto& mesh : mesh_list) {

auto rotate = glm::vec3(ofRandom(360), ofRandom(360), ofRandom(360));

auto speed = glm::vec3(ofRandom(5, 10), ofRandom(5, 10), ofRandom(5, 10));

auto center = glm::vec3(mesh.getVertex(0).x + span * 0.5, mesh.getVertex(0).y + span * 0.5, 0);

auto tmp_center = center;

mesh.setVertex(0, mesh.getVertex(0) - center);

mesh.setVertex(1, mesh.getVertex(1) - center);

mesh.setVertex(2, mesh.getVertex(2) - center);

mesh.setVertex(3, mesh.getVertex(3) - center);

auto noise_value = ofNoise(glm::vec4(center * 0.001, ofGetFrameNum() * 0.005));

if (noise_value < 0.48) {

tmp_center += glm::vec3(0, 0, -250);

rotate = glm::vec3();

}

else if (noise_value < 0.52) {

tmp_center += glm::vec3(0, 0, ofMap(noise_value, 0.48, 0.52, -250, 250));

rotate.x += ofGetFrameNum() * speed.x;

rotate.y += ofGetFrameNum() * speed.y;

rotate.z += ofGetFrameNum() * speed.z;

}

else {

tmp_center += glm::vec3(0, 0, 250);

rotate = glm::vec3();

}

ofPushMatrix();

ofTranslate(tmp_center);

ofRotateZ(rotate.z);

ofRotateY(rotate.y);

ofRotateX(rotate.x);

ofSetColor(255);

this->image.bind();

mesh.draw();

this->image.unbind();

ofMesh line;

line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

if (noise_value > 0.48 && noise_value < 0.52) {

line.addVertex(mesh.getVertex(0));

line.addVertex(mesh.getVertex(1));

line.addVertex(mesh.getVertex(2));

line.addVertex(mesh.getVertex(3));

line.addIndex(0); line.addIndex(1);

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

line.addIndex(2); line.addIndex(3);

line.addIndex(3); line.addIndex(0);

}

else {

auto top_noise_value = ofNoise(glm::vec4((center + glm::vec3(0, span, 0)) * 0.001, ofGetFrameNum() * 0.005));

if ((top_noise_value > 0.48 && top_noise_value < 0.52 || center.y >= 720 - span * 0.5) ) {

line.addVertex(mesh.getVertex(2));

line.addVertex(mesh.getVertex(3));

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

}

auto bottom_noise_value = ofNoise(glm::vec4((center - glm::vec3(0, span, 0)) * 0.001, ofGetFrameNum() * 0.005));

if (bottom_noise_value > 0.48 && bottom_noise_value < 0.52 || center.y <= span * 0.5) {

line.addVertex(mesh.getVertex(0));

line.addVertex(mesh.getVertex(1));

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

}

auto right_noise_value = ofNoise(glm::vec4((center + glm::vec3(span, 0, 0)) * 0.001, ofGetFrameNum() * 0.005));

if (right_noise_value > 0.48 && right_noise_value < 0.52 || center.x >= 1280 - span * 0.5) {

line.addVertex(mesh.getVertex(1));

line.addVertex(mesh.getVertex(2));

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

}

auto left_noise_value = ofNoise(glm::vec4((center - glm::vec3(span, 0, 0)) * 0.001, ofGetFrameNum() * 0.005));

if (left_noise_value > 0.48 && left_noise_value < 0.52 || center.x <= span * 0.5) {

line.addVertex(mesh.getVertex(3));

line.addVertex(mesh.getVertex(0));

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

}

line.drawWireframe();

ofPopMatrix();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220420

2022年3月22日

Diamond shape. Draw by openFrameworks

[ Video ]

[ About ]
ひし形を切り替える。

Switching rhombus.

[ 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) {};

	ofFbo fbo;
	ofPixels pixels;
	cv::Mat pixels_mat;
};

#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) {};

ofFbo fbo;

ofPixels pixels;

cv::Mat pixels_mat;

};

#include "ofApp.h"

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

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

	ofBackground(255);
	ofSetLineWidth(2);

	this->fbo.allocate(ofGetWidth() + 25, ofGetHeight() + 25);
	this->fbo.readToPixels(this->pixels);
	this->pixels_mat = cv::Mat(this->pixels.getHeight(), this->pixels.getWidth(), CV_8UC4, this->pixels.getData());
}

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

	ofSeedRandom(39);

	this->fbo.begin();
	ofClear(0);
	
	ofTranslate(ofGetWindowSize() * 0.5);

	int span = 40;
	for (int x = span * -8; x < span * 8; x += span) {

		for (int y = span * -8; y < span * 8; y += span) {

			vector<glm::vec2> vertices;

			int r = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0035), 0, 1, 0, 4);
			auto location = glm::vec2(x, y);

			if (r == 1) {

				location += glm::vec2(span, 0);
			}
			else if (r == 2) {

				location += glm::vec2(span, span);
			}
			else if (r == 3) {

				location += glm::vec2(0, span);
			}

			int deg_start = r * 90;
			int radius = span;
			for (int deg = deg_start; deg <= deg_start + 90; deg += 45) {

				vertices.push_back(location + glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));
			}

			r = (r + 2) % 4;

			location = glm::vec2(x, y);
			if (r == 1) {

				location += glm::vec2(span, 0);
			}
			else if (r == 2) {

				location += glm::vec2(span, span);
			}
			else if (r == 3) {

				location += glm::vec2(0, span);
			}

			deg_start = r * 90;
			for (int deg = deg_start; deg <= deg_start + 90; deg += 45) {

				vertices.push_back(location + glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));
			}

			ofSetColor(0);
			ofNoFill();
			ofBeginShape();
			ofVertices(vertices);
			ofEndShape(true);
		}
	}

	this->fbo.end();
	this->fbo.readToPixels(this->pixels);

	cv::Mat gray_mat, bit_mat;
	cv::cvtColor(this->pixels_mat, gray_mat, cv::COLOR_RGB2GRAY);
	for (int y = 0; y < this->pixels_mat.cols; y++) {

		for (int x = 0; x < this->pixels_mat.rows; x++) {

			if (gray_mat.at<unsigned char>(y, x) > 0) {

				this->pixels_mat.at<cv::Vec4b>(y, x) = cv::Vec4b(139, 139, 139, 255);
			}
		}
	}

	cv::GaussianBlur(this->pixels_mat, this->pixels_mat, cv::Size(19, 19), 10, 10);
}

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

	ofSetColor(255);

	ofImage draw_image;
	draw_image.setFromPixels(this->pixels);
	draw_image.draw(0, 0);

	this->fbo.draw(-10, -10);
}

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

ofSetLineWidth(2);

this->fbo.allocate(ofGetWidth() + 25, ofGetHeight() + 25);

this->fbo.readToPixels(this->pixels);

this->pixels_mat = cv::Mat(this->pixels.getHeight(), this->pixels.getWidth(), CV_8UC4, this->pixels.getData());

}

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

void ofApp::update() {

ofSeedRandom(39);

this->fbo.begin();

ofClear(0);

ofTranslate(ofGetWindowSize() * 0.5);

int span = 40;

for (int x = span * -8; x < span * 8; x += span) {

for (int y = span * -8; y < span * 8; y += span) {

vector<glm::vec2> vertices;

int r = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0035), 0, 1, 0, 4);

auto location = glm::vec2(x, y);

if (r == 1) {

location += glm::vec2(span, 0);

}

else if (r == 2) {

location += glm::vec2(span, span);

}

else if (r == 3) {

location += glm::vec2(0, span);

}

int deg_start = r * 90;

int radius = span;

for (int deg = deg_start; deg <= deg_start + 90; deg += 45) {

vertices.push_back(location + glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));

}

r = (r + 2) % 4;

location = glm::vec2(x, y);

if (r == 1) {

location += glm::vec2(span, 0);

}

else if (r == 2) {

location += glm::vec2(span, span);

}

else if (r == 3) {

location += glm::vec2(0, span);

}

deg_start = r * 90;

for (int deg = deg_start; deg <= deg_start + 90; deg += 45) {

vertices.push_back(location + glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));

}

ofSetColor(0);

ofNoFill();

ofBeginShape();

ofVertices(vertices);

ofEndShape(true);

}

this->fbo.end();

this->fbo.readToPixels(this->pixels);

cv::Mat gray_mat, bit_mat;

cv::cvtColor(this->pixels_mat, gray_mat, cv::COLOR_RGB2GRAY);

for (int y = 0; y < this->pixels_mat.cols; y++) {

for (int x = 0; x < this->pixels_mat.rows; x++) {

if (gray_mat.at<unsigned char>(y, x) > 0) {

this->pixels_mat.at<cv::Vec4b>(y, x) = cv::Vec4b(139, 139, 139, 255);

}

cv::GaussianBlur(this->pixels_mat, this->pixels_mat, cv::Size(19, 19), 10, 10);

}

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

void ofApp::draw() {

ofSetColor(255);

ofImage draw_image;

draw_image.setFromPixels(this->pixels);

draw_image.draw(0, 0);

this->fbo.draw(-10, -10);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220322

2025年2月
月	火	水	木	金	土	日
					1	2
3	4	5	6	7	8	9
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17	18	19	20	21	22	23
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