openFrameworks – ページ 434 – プログラミング de 落描き

2020年9月27日2020年9月27日

Twisting video. Draw by openFrameworks

[ Video ]

[ About ]
Twisting video.

[ 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) {};

	cv::VideoCapture cap;
	cv::Size cap_size;
	cv::Mat frame;
	ofImage image;
	int number_of_frames;
	vector<cv::Mat> frame_list;

	ofEasyCam cam;
	ofMesh mesh, mesh_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) {};

cv::VideoCapture cap;

cv::Size cap_size;

cv::Mat frame;

ofImage image;

int number_of_frames;

vector<cv::Mat> frame_list;

ofEasyCam cam;

ofMesh mesh, mesh_frame;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofEnableDepthTest();

	this->cap.open("D:\\MP4\\production ID_3761468.mp4");
	this->cap_size = cv::Size(640, 360);

	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);

	this->number_of_frames = this->cap.get(cv::CAP_PROP_FRAME_COUNT);
	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->frame_list.push_back(tmp);
	}

	this->mesh_frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
}

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

	this->mesh.clear();
	this->mesh_frame.clear();

	int n = (int)(ofGetFrameNum() * 0.54) % this->number_of_frames;
	this->frame_list[n].copyTo(this->frame);
	this->image.update();

	int span = 10;
	for (int x = this->cap_size.width * -0.5; x < this->cap_size.width * 0.5; x += span) {

		auto angle = ofMap(ofNoise(x * 0.003 + ofGetFrameNum() * 0.02), 0, 1, -PI * 2, PI * 2);
		auto rotation = glm::rotate(glm::mat4(), angle, glm::vec3(1, 0, 0));

		auto next_angle = ofMap(ofNoise((x + span) * 0.003 + ofGetFrameNum() * 0.02), 0, 1, -PI * 2, PI * 2);
		auto next_rotation = glm::rotate(glm::mat4(), next_angle, glm::vec3(1, 0, 0));

		for (int y = this->cap_size.height * -0.5; y < this->cap_size.height * 0.5; y += span) {

			int index = this->mesh.getNumVertices();

			vector<glm::vec3> vertices;
			vertices.push_back(glm::vec4(x, y, 0, 0) * rotation);
			vertices.push_back(glm::vec4(x + span, y, 0, 0) * next_rotation);
			vertices.push_back(glm::vec4(x + span, y + span, 0, 0) * next_rotation);
			vertices.push_back(glm::vec4(x, y + span, 0, 0) * rotation);

			this->mesh.addVertices(vertices);

			this->mesh.addTexCoord(glm::vec3(x + this->cap_size.width * 0.5, y + this->cap_size.height * 0.5, 0));
			this->mesh.addTexCoord(glm::vec3(x + span + this->cap_size.width * 0.5, y + this->cap_size.height * 0.5, 0));
			this->mesh.addTexCoord(glm::vec3(x + span + this->cap_size.width * 0.5, y + span + this->cap_size.height * 0.5, 0));
			this->mesh.addTexCoord(glm::vec3(x + this->cap_size.width * 0.5, y + span + this->cap_size.height * 0.5, 0));

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

			if (x == this->cap_size.width * -0.5) {

				int mesh_frame_index = this->mesh_frame.getNumVertices();

				this->mesh_frame.addVertex(vertices[0]);
				this->mesh_frame.addVertex(vertices[3]);

				this->mesh_frame.addIndex(mesh_frame_index + 0);
				this->mesh_frame.addIndex(mesh_frame_index + 1);
			}

			if (x == this->cap_size.width * 0.5 - span) {

				int mesh_frame_index = this->mesh_frame.getNumVertices();

				this->mesh_frame.addVertex(vertices[1]);
				this->mesh_frame.addVertex(vertices[2]);

				this->mesh_frame.addIndex(mesh_frame_index + 0);
				this->mesh_frame.addIndex(mesh_frame_index + 1);
			}

			if (y == this->cap_size.height * -0.5) {

				int mesh_frame_index = this->mesh_frame.getNumVertices();

				this->mesh_frame.addVertex(vertices[0]);
				this->mesh_frame.addVertex(vertices[1]);

				this->mesh_frame.addIndex(mesh_frame_index + 0);
				this->mesh_frame.addIndex(mesh_frame_index + 1);
			}

			if (y == this->cap_size.height * 0.5 - span) {

				int mesh_frame_index = this->mesh_frame.getNumVertices();

				this->mesh_frame.addVertex(vertices[2]);
				this->mesh_frame.addVertex(vertices[3]);

				this->mesh_frame.addIndex(mesh_frame_index + 0);
				this->mesh_frame.addIndex(mesh_frame_index + 1);
			}
		}
	}
}

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

	this->cam.begin();
	ofRotateX(180);

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

	ofSetColor(39);
	this->mesh_frame.drawWireframe();

	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(239);

ofEnableDepthTest();

this->cap.open("D:\\MP4\\production ID_3761468.mp4");

this->cap_size = cv::Size(640, 360);

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);

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

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->frame_list.push_back(tmp);

}

this->mesh_frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

}

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

void ofApp::update() {

this->mesh.clear();

this->mesh_frame.clear();

int n = (int)(ofGetFrameNum() * 0.54) % this->number_of_frames;

this->frame_list[n].copyTo(this->frame);

this->image.update();

int span = 10;

for (int x = this->cap_size.width * -0.5; x < this->cap_size.width * 0.5; x += span) {

auto angle = ofMap(ofNoise(x * 0.003 + ofGetFrameNum() * 0.02), 0, 1, -PI * 2, PI * 2);

auto rotation = glm::rotate(glm::mat4(), angle, glm::vec3(1, 0, 0));

auto next_angle = ofMap(ofNoise((x + span) * 0.003 + ofGetFrameNum() * 0.02), 0, 1, -PI * 2, PI * 2);

auto next_rotation = glm::rotate(glm::mat4(), next_angle, glm::vec3(1, 0, 0));

for (int y = this->cap_size.height * -0.5; y < this->cap_size.height * 0.5; y += span) {

int index = this->mesh.getNumVertices();

vector<glm::vec3> vertices;

vertices.push_back(glm::vec4(x, y, 0, 0) * rotation);

vertices.push_back(glm::vec4(x + span, y, 0, 0) * next_rotation);

vertices.push_back(glm::vec4(x + span, y + span, 0, 0) * next_rotation);

vertices.push_back(glm::vec4(x, y + span, 0, 0) * rotation);

this->mesh.addVertices(vertices);

this->mesh.addTexCoord(glm::vec3(x + this->cap_size.width * 0.5, y + this->cap_size.height * 0.5, 0));

this->mesh.addTexCoord(glm::vec3(x + span + this->cap_size.width * 0.5, y + this->cap_size.height * 0.5, 0));

this->mesh.addTexCoord(glm::vec3(x + span + this->cap_size.width * 0.5, y + span + this->cap_size.height * 0.5, 0));

this->mesh.addTexCoord(glm::vec3(x + this->cap_size.width * 0.5, y + span + this->cap_size.height * 0.5, 0));

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

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

if (x == this->cap_size.width * -0.5) {

int mesh_frame_index = this->mesh_frame.getNumVertices();

this->mesh_frame.addVertex(vertices[0]);

this->mesh_frame.addVertex(vertices[3]);

this->mesh_frame.addIndex(mesh_frame_index + 0);

this->mesh_frame.addIndex(mesh_frame_index + 1);

}

if (x == this->cap_size.width * 0.5 - span) {

int mesh_frame_index = this->mesh_frame.getNumVertices();

this->mesh_frame.addVertex(vertices[1]);

this->mesh_frame.addVertex(vertices[2]);

this->mesh_frame.addIndex(mesh_frame_index + 0);

this->mesh_frame.addIndex(mesh_frame_index + 1);

}

if (y == this->cap_size.height * -0.5) {

int mesh_frame_index = this->mesh_frame.getNumVertices();

this->mesh_frame.addVertex(vertices[0]);

this->mesh_frame.addVertex(vertices[1]);

this->mesh_frame.addIndex(mesh_frame_index + 0);

this->mesh_frame.addIndex(mesh_frame_index + 1);

}

if (y == this->cap_size.height * 0.5 - span) {

int mesh_frame_index = this->mesh_frame.getNumVertices();

this->mesh_frame.addVertex(vertices[2]);

this->mesh_frame.addVertex(vertices[3]);

this->mesh_frame.addIndex(mesh_frame_index + 0);

this->mesh_frame.addIndex(mesh_frame_index + 1);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(180);

ofSetColor(255);

this->image.bind();

this->mesh.draw();

this->image.unbind();

ofSetColor(39);

this->mesh_frame.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200927

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2020年9月26日2020年9月26日

Segmented Random Walker. Draw by openFrameworks

[ Video ]

[ About ]
区分けされたランダムウォーカー。

Segmented Random Walker.

[ Source ]

#pragma once
#include "ofMain.h"

class Actor {
public:
	Actor(vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list);
	void update(const int& frame_span, vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list);
	glm::vec3 getLocation();
	deque<glm::vec3> getLog();
	void setColor(ofColor color);
	ofColor getColor();

private:

	int select_index;
	int next_index;

	glm::vec3 location;
	deque<glm::vec3> log;
	ofColor color;
};

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) {};

	vector<glm::vec3> location_list;
	vector<vector<int>> next_index_list;
	vector<int> destination_list;

	vector<unique_ptr<Actor>> actor_list;
};

#pragma once

#include "ofMain.h"

class Actor {

public:

Actor(vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list);

void update(const int& frame_span, vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list);

glm::vec3 getLocation();

deque<glm::vec3> getLog();

void setColor(ofColor color);

ofColor getColor();

private:

int select_index;

int next_index;

glm::vec3 location;

deque<glm::vec3> log;

ofColor color;

};

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) {};

vector<glm::vec3> location_list;

vector<vector<int>> next_index_list;

vector<int> destination_list;

vector<unique_ptr<Actor>> actor_list;

};

#include "ofApp.h"	

//--------------------------------------------------------------
Actor::Actor(vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list) {

	this->select_index = ofRandom(location_list.size());
	while (true) {

		auto itr = find(destination_list.begin(), destination_list.end(), this->select_index);
		if (itr == destination_list.end()) {

			destination_list.push_back(this->select_index);
			break;
		}

		this->select_index = (this->select_index + 1) % location_list.size();
	}

	this->next_index = this->select_index;
}

//--------------------------------------------------------------
void Actor::update(const int& frame_span, vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list) {

	if (ofGetFrameNum() % frame_span == 0) {

		auto tmp_index = this->select_index;
		this->select_index = this->next_index;
		int retry = next_index_list[this->select_index].size();
		this->next_index = next_index_list[this->select_index][(int)ofRandom(next_index_list[this->select_index].size())];
		while (--retry > 0) {

			auto destination_itr = find(destination_list.begin(), destination_list.end(), this->next_index);
			if (destination_itr == destination_list.end()) {

				if (tmp_index != this->next_index) {

					destination_list.push_back(this->next_index);
					break;
				}
			}

			this->next_index = next_index_list[this->select_index][(this->next_index + 1) % next_index_list[this->select_index].size()];
		}
		if (retry <= 0) {

			destination_list.push_back(this->select_index);
			this->next_index = this->select_index;
		}
	}

	auto param = ofGetFrameNum() % frame_span;
	auto distance = location_list[this->next_index] - location_list[this->select_index];
	this->location = location_list[this->select_index] + distance / frame_span * param;

	this->log.push_front(this->location);
	while (this->log.size() > 50) { this->log.pop_back(); }
}

//--------------------------------------------------------------
glm::vec3 Actor::getLocation() {

	return this->location;
}

//--------------------------------------------------------------
deque<glm::vec3> Actor::getLog() {

	return this->log;
}

//--------------------------------------------------------------
void Actor::setColor(ofColor color) {

	this->color = color;
}

//--------------------------------------------------------------
ofColor Actor::getColor() {

	return this->color;
}


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

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

	ofBackground(239);
	ofSetColor(39);

	auto span = 20;
	for (int x = -360; x <= 360; x += span) {

		for (int y = -360; y <= 360; y += span) {

			auto p_x = (x + 360) % 240;
			auto p_y = (y + 360) % 240;
			if ((p_x > 20 && p_x < 220 && p_y > 20 && p_y < 220) ||
				(p_x > 80 && p_x < 160 && y > -340 && y < 340) ||
				(p_y > 80 && p_y < 160 && x > -340 && x < 340)) {

				this->location_list.push_back(glm::vec3(x, y, 0));
			}
		}
	}

	for (auto& location : this->location_list) {

		vector<int> next_index = vector<int>();
		int index = -1;
		for (auto& other : this->location_list) {

			index++;
			if (location == other) { continue; }

			float distance = glm::distance(location, other);
			if (distance <= span) {

				next_index.push_back(index);
			}
		}

		this->next_index_list.push_back(next_index);
	}

	ofColor color;
	vector<int> hex_list = { 0xef476f, 0xffd166, 0x06d6a0, 0x118ab2, 0x073b4c };
	vector<ofColor> base_color_list;
	for (auto hex : hex_list) {

		color.setHex(hex);
		base_color_list.push_back(color);
	}

	for (int i = 0; i < 350; i++) {

		this->actor_list.push_back(make_unique<Actor>(this->location_list, this->next_index_list, this->destination_list));
		this->actor_list.back()->setColor(base_color_list[(int)ofRandom(base_color_list.size())]);
	}
}

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

	int frame_span = 30;
	int prev_index_size = 0;

	if (ofGetFrameNum() % frame_span == 0) {

		prev_index_size = this->destination_list.size();
	}

	for (auto& actor : this->actor_list) {

		actor->update(frame_span, this->location_list, this->next_index_list, this->destination_list);
	}

	if (prev_index_size != 0) {

		this->destination_list.erase(this->destination_list.begin(), this->destination_list.begin() + prev_index_size);
	}
}

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

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

	ofSetColor(39, 128);
	ofSetLineWidth(1);
	for (auto& location : this->location_list) {

		ofDrawCircle(location, 2);
	}

	ofSetLineWidth(3);
	for (auto& actor : this->actor_list) {

		ofSetColor(actor->getColor());

		ofFill();
		ofDrawCircle(actor->getLocation(), 3);

		ofNoFill();

		ofBeginShape();
		for (auto& l : actor->getLog()) {

			ofVertex(l);
		}
		ofEndShape();
	}
}


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

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

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#include "ofApp.h"

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

Actor::Actor(vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list) {

this->select_index = ofRandom(location_list.size());

while (true) {

auto itr = find(destination_list.begin(), destination_list.end(), this->select_index);

if (itr == destination_list.end()) {

destination_list.push_back(this->select_index);

break;

}

this->select_index = (this->select_index + 1) % location_list.size();

}

this->next_index = this->select_index;

}

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

void Actor::update(const int& frame_span, vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list) {

if (ofGetFrameNum() % frame_span == 0) {

auto tmp_index = this->select_index;

this->select_index = this->next_index;

int retry = next_index_list[this->select_index].size();

this->next_index = next_index_list[this->select_index][(int)ofRandom(next_index_list[this->select_index].size())];

while (--retry > 0) {

auto destination_itr = find(destination_list.begin(), destination_list.end(), this->next_index);

if (destination_itr == destination_list.end()) {

if (tmp_index != this->next_index) {

destination_list.push_back(this->next_index);

break;

}

this->next_index = next_index_list[this->select_index][(this->next_index + 1) % next_index_list[this->select_index].size()];

}

if (retry <= 0) {

destination_list.push_back(this->select_index);

this->next_index = this->select_index;

}

auto param = ofGetFrameNum() % frame_span;

auto distance = location_list[this->next_index] - location_list[this->select_index];

this->location = location_list[this->select_index] + distance / frame_span * param;

this->log.push_front(this->location);

while (this->log.size() > 50) { this->log.pop_back(); }

}

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

glm::vec3 Actor::getLocation() {

return this->location;

}

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

deque<glm::vec3> Actor::getLog() {

return this->log;

}

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

void Actor::setColor(ofColor color) {

this->color = color;

}

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

ofColor Actor::getColor() {

return this->color;

}

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetColor(39);

auto span = 20;

for (int x = -360; x <= 360; x += span) {

for (int y = -360; y <= 360; y += span) {

auto p_x = (x + 360) % 240;

auto p_y = (y + 360) % 240;

if ((p_x > 20 && p_x < 220 && p_y > 20 && p_y < 220) ||

(p_x > 80 && p_x < 160 && y > -340 && y < 340) ||

(p_y > 80 && p_y < 160 && x > -340 && x < 340)) {

this->location_list.push_back(glm::vec3(x, y, 0));

}

for (auto& location : this->location_list) {

vector<int> next_index = vector<int>();

int index = -1;

for (auto& other : this->location_list) {

index++;

if (location == other) { continue; }

float distance = glm::distance(location, other);

if (distance <= span) {

next_index.push_back(index);

}

this->next_index_list.push_back(next_index);

}

ofColor color;

vector<int> hex_list = { 0xef476f, 0xffd166, 0x06d6a0, 0x118ab2, 0x073b4c };

vector<ofColor> base_color_list;

for (auto hex : hex_list) {

color.setHex(hex);

base_color_list.push_back(color);

}

for (int i = 0; i < 350; i++) {

this->actor_list.push_back(make_unique<Actor>(this->location_list, this->next_index_list, this->destination_list));

this->actor_list.back()->setColor(base_color_list[(int)ofRandom(base_color_list.size())]);

}

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

void ofApp::update() {

int frame_span = 30;

int prev_index_size = 0;

if (ofGetFrameNum() % frame_span == 0) {

prev_index_size = this->destination_list.size();

}

for (auto& actor : this->actor_list) {

actor->update(frame_span, this->location_list, this->next_index_list, this->destination_list);

}

if (prev_index_size != 0) {

this->destination_list.erase(this->destination_list.begin(), this->destination_list.begin() + prev_index_size);

}

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

void ofApp::draw() {

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

ofSetColor(39, 128);

ofSetLineWidth(1);

for (auto& location : this->location_list) {

ofDrawCircle(location, 2);

}

ofSetLineWidth(3);

for (auto& actor : this->actor_list) {

ofSetColor(actor->getColor());

ofFill();

ofDrawCircle(actor->getLocation(), 3);

ofNoFill();

ofBeginShape();

for (auto& l : actor->getLog()) {

ofVertex(l);

}

ofEndShape();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200926

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2020年9月25日2020年9月25日

life span. Draw by openFrameworks

[ Video ]

[ About ]
life span.

[ Source ]

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

	vector<ofColor> base_color_list;

	ofxBox2d box2d;
	vector<shared_ptr<ofxBox2dCircle>> circle_list;
	vector<float> radius_list;
	vector<ofColor> color_list;
	vector<float> life_list;
	vector<float> life_speed_list;

	ofTrueTypeFont font;
};

#pragma once

#include "ofMain.h"

#include "ofxBox2d.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) {};

vector<ofColor> base_color_list;

ofxBox2d box2d;

vector<shared_ptr<ofxBox2dCircle>> circle_list;

vector<float> radius_list;

vector<ofColor> color_list;

vector<float> life_list;

vector<float> life_speed_list;

ofTrueTypeFont font;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(2);
	ofSetCircleResolution(60);

	this->font.loadFont("fonts/Kazesawa-Bold.ttf", 20, true, true, true);

	ofColor color;
	vector<int> hex_list = { 0xef476f, 0xffd166, 0x06d6a0, 0x118ab2, 0x073b4c };
	for (auto hex : hex_list) {

		color.setHex(hex);
		this->base_color_list.push_back(color);
	}

	this->box2d.init();
	this->box2d.setGravity(0, 50);
	this->box2d.createBounds();
	this->box2d.setFPS(60);
	this->box2d.registerGrabbing();
}

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

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

		this->life_list[i] -= this->life_speed_list[i];

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

			this->circle_list.erase(this->circle_list.begin() + i);
			this->radius_list.erase(this->radius_list.begin() + i);
			this->color_list.erase(this->color_list.begin() + i);
			this->life_list.erase(this->life_list.begin() + i);
			this->life_speed_list.erase(this->life_speed_list.begin() + i);
		}
	}

	if (ofGetFrameNum() % 15 == 0) {

		auto radius = ofRandom(25, 50);

		auto circle = make_shared<ofxBox2dCircle>();
		circle->setPhysics(0.5, 0.83, 0.5);
		circle->setup(this->box2d.getWorld(), ofRandom(radius, ofGetWidth() - radius), radius, radius);
		circle->setRotation(ofRandom(360));
		this->circle_list.push_back(circle);
		this->radius_list.push_back(radius);

		int color_index = ofRandom(this->base_color_list.size());
		this->color_list.push_back(this->base_color_list[color_index]);
		this->life_list.push_back(255);
		this->life_speed_list.push_back(ofRandom(0.05, 1.2));
	}

	this->box2d.update();
}

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

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

		ofPushMatrix();
		ofTranslate(this->circle_list[i]->getPosition());
		ofRotate(this->circle_list[i]->getRotation());

		auto color_value = this->life_list[i] < 30 ? ofMap(this->life_list[i], 0, 30, 239, 39) : 39;

		ofFill();
		ofSetColor(ofColor(this->color_list[i], ofMap(color_value, 39, 239, 255, 0)));
		ofDrawCircle(glm::vec3(), this->radius_list[i]);

		ofFill();
		ofSetColor(239);
		string word = to_string((int)this->life_list[i]);
		this->font.drawString(word, this->font.stringWidth(word) * -0.5, this->font.stringHeight(word) * 0.5);

		ofPopMatrix();
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetLineWidth(2);

ofSetCircleResolution(60);

this->font.loadFont("fonts/Kazesawa-Bold.ttf", 20, true, true, true);

ofColor color;

vector<int> hex_list = { 0xef476f, 0xffd166, 0x06d6a0, 0x118ab2, 0x073b4c };

for (auto hex : hex_list) {

color.setHex(hex);

this->base_color_list.push_back(color);

}

this->box2d.init();

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

this->box2d.createBounds();

this->box2d.setFPS(60);

this->box2d.registerGrabbing();

}

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

void ofApp::update() {

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

this->life_list[i] -= this->life_speed_list[i];

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

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

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

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

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

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

}

if (ofGetFrameNum() % 15 == 0) {

auto radius = ofRandom(25, 50);

auto circle = make_shared<ofxBox2dCircle>();

circle->setPhysics(0.5, 0.83, 0.5);

circle->setup(this->box2d.getWorld(), ofRandom(radius, ofGetWidth() - radius), radius, radius);

circle->setRotation(ofRandom(360));

this->circle_list.push_back(circle);

this->radius_list.push_back(radius);

int color_index = ofRandom(this->base_color_list.size());

this->color_list.push_back(this->base_color_list[color_index]);

this->life_list.push_back(255);

this->life_speed_list.push_back(ofRandom(0.05, 1.2));

}

this->box2d.update();

}

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

void ofApp::draw() {

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

ofPushMatrix();

ofTranslate(this->circle_list[i]->getPosition());

ofRotate(this->circle_list[i]->getRotation());

auto color_value = this->life_list[i] < 30 ? ofMap(this->life_list[i], 0, 30, 239, 39) : 39;

ofFill();

ofSetColor(ofColor(this->color_list[i], ofMap(color_value, 39, 239, 255, 0)));

ofDrawCircle(glm::vec3(), this->radius_list[i]);

ofFill();

ofSetColor(239);

string word = to_string((int)this->life_list[i]);

this->font.drawString(word, this->font.stringWidth(word) * -0.5, this->font.stringHeight(word) * 0.5);

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200925

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