box2d – ページ 2 – プログラミング de 落描き

2021年9月17日2021年9月17日

From frame gap. Draw by openFrameworks

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画像として大きく動きがあった場所にオブジェクトを生成させる。

Let the object be generated in the place where there was a large movement as an image.

[ Source ]

#pragma once
#include "ofMain.h"
#include "opencv2/opencv.hpp"
#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) {};

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

	float rect_size;
	vector<cv::Mat> rect_frame_list;
	vector<unique_ptr<ofImage>> rect_image_list;
	vector<cv::Rect> cv_rect_list;

	ofxBox2d box2d;
	vector<shared_ptr<ofxBox2dRect>> box2d_rect_list;
	vector<int> box2d_frame_index_list, box2d_rect_index_list;
	vector<float> box2d_life_list;
	vector<ofColor> box2d_color_list;

	ofEasyCam cam;
};

#pragma once

#include "ofMain.h"

#include "opencv2/opencv.hpp"

#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) {};

cv::VideoCapture cap;

cv::Size cap_size;

int number_of_frames;

vector<cv::Mat> frame_list;

float rect_size;

vector<cv::Mat> rect_frame_list;

vector<unique_ptr<ofImage>> rect_image_list;

vector<cv::Rect> cv_rect_list;

ofxBox2d box2d;

vector<shared_ptr<ofxBox2dRect>> box2d_rect_list;

vector<int> box2d_frame_index_list, box2d_rect_index_list;

vector<float> box2d_life_list;

vector<ofColor> box2d_color_list;

ofEasyCam cam;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofEnableDepthTest();
	ofDisableArbTex();

	this->cap_size = cv::Size(640, 360);
	this->rect_size = 20;
	for (int x = 0; x < this->cap_size.width; x += this->rect_size) {

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

			auto image = make_unique<ofImage>();
			image->allocate(this->rect_size, this->rect_size, OF_IMAGE_COLOR);
			cv::Mat frame = cv::Mat(cv::Size(image->getWidth(), image->getHeight()), CV_MAKETYPE(CV_8UC3, image->getPixels().getNumChannels()), image->getPixels().getData(), 0);
			cv::Rect rect = cv::Rect(x, y, this->rect_size, this->rect_size);

			this->rect_image_list.push_back(move(image));
			this->cv_rect_list.push_back(rect);
			this->rect_frame_list.push_back(frame);
		}
	}

	auto file_path = "D:\\MP4\\VN20210917_145135.mp4";
	this->cap.open(file_path);
	this->number_of_frames = 0;
	while(true) {

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

			break;
		}

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

		this->frame_list.push_back(tmp);
		this->number_of_frames++;
	}

	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->box2d_rect_list.size() - 1; i > -1; i--) {

		this->box2d_life_list[i] -= 3;
		if (this->box2d_life_list[i] < 0) {

			this->box2d_rect_list.erase(this->box2d_rect_list.begin() + i);
			this->box2d_frame_index_list.erase(this->box2d_frame_index_list.begin() + i);
			this->box2d_rect_index_list.erase(this->box2d_rect_index_list.begin() + i);
			this->box2d_life_list.erase(this->box2d_life_list.begin() + i);
			this->box2d_color_list.erase(this->box2d_color_list.begin() + i);
		}
	}


	if (ofGetFrameNum() % 5 == 0) {

		int frame_index = (int)(ofGetFrameNum() * 0.5) % this->number_of_frames;
		int next_frame_index = (frame_index + 1) % this->number_of_frames;

		if (frame_index < next_frame_index) {

			cv::Mat gap = this->frame_list[frame_index] - this->frame_list[next_frame_index];

			vector<ofColor> base_color_list;
			ofColor color;
			vector<int> hex_list = { 0x247BA0, 0x70C1B3, 0xB2DBBF, 0xF3FFBD, 0xFF1654 };
			for (auto hex : hex_list) {

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

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

				int x = this->cv_rect_list[i].x + this->rect_size * 0.5;
				int y = this->cv_rect_list[i].y + this->rect_size * 0.5;

				cv::Vec3b* gap_value = gap.ptr<cv::Vec3b>(y, 0);
				cv::Vec3b* color_value = this->frame_list[frame_index].ptr<cv::Vec3b>(y, 0);
				cv::Vec3b gv = gap_value[x];
				cv::Vec3b cv = color_value[x];
				if ((gv[0] + gv[1] + gv[2]) > 80) {

					int rect_index = i;

					auto box2d_rect = make_shared<ofxBox2dRect>();
					box2d_rect->setPhysics(0.5, 0.83, 0.1);
					box2d_rect->setup(this->box2d.getWorld(), this->cv_rect_list[rect_index].x + 50, this->cv_rect_list[rect_index].y + 30, this->rect_size, this->rect_size);

					this->box2d_rect_list.push_back(box2d_rect);
					this->box2d_frame_index_list.push_back(next_frame_index);
					this->box2d_rect_index_list.push_back(rect_index);
					this->box2d_life_list.push_back(255);
					this->box2d_color_list.push_back(base_color_list[ofRandom(base_color_list.size())]);
				}
			}
		}
	}

	this->box2d.update();
}

//--------------------------------------------------------------
void ofApp::draw() {
	
	this->cam.begin();
	ofRotateX(180);
	ofTranslate(ofGetWidth() * -0.5, ofGetHeight() * -0.5);

	ofSetLineWidth(0.8);
	for (int i = 0; i < this->rect_frame_list.size(); i++) {

		ofPushMatrix();
		ofTranslate(this->cv_rect_list[i].x + 50, this->cv_rect_list[i].y + 30, 1);
		ofRotateX(180);

		int frame_index = (int)(ofGetFrameNum() * 0.5) % this->number_of_frames;

		cv::Mat tmp_box_image(this->frame_list[frame_index], this->cv_rect_list[i]);
		tmp_box_image.copyTo(this->rect_frame_list[i]);

		this->rect_image_list[i]->update();
		this->rect_image_list[i]->getTexture().bind();
		ofSetColor(255);
		ofFill();
		ofDrawPlane(glm::vec3(), this->rect_size, this->rect_size);
		this->rect_image_list[i]->unbind();

		ofSetColor(39);
		ofNoFill();
		ofDrawPlane(glm::vec3(), this->rect_size, this->rect_size);

		ofPopMatrix();
	}

	for (int i = 0; i < this->box2d_rect_list.size(); i++) {

		ofPushMatrix();
		ofTranslate(this->box2d_rect_list[i]->getPosition().x, this->box2d_rect_list[i]->getPosition().y, -1);
		ofRotateX(180);
		ofRotate(this->box2d_rect_list[i]->getRotation());

		ofSetColor(this->box2d_color_list[i], this->box2d_life_list[i] > 128 ? 192 : ofMap(this->box2d_life_list[i], 128, 0, 192, 0));
		ofFill();
		ofDrawPlane(glm::vec3(), this->rect_size, this->rect_size);

		/*
		int frame_index = this->box2d_frame_index_list[i];
		int rect_index = this->box2d_rect_index_list[i];

		cv::Mat tmp_box_image(this->frame_list[frame_index], this->cv_rect_list[rect_index]);
		tmp_box_image.copyTo(this->rect_frame_list[rect_index]);

		this->rect_image_list[rect_index]->update();
		this->rect_image_list[rect_index]->getTexture().bind();
		ofSetColor(255, this->box2d_life_list[i] > 128 ? 255 : ofMap(this->box2d_life_list[i], 128, 0, 255, 0));
		ofFill();
		ofDrawPlane(glm::vec3(), this->rect_size, this->rect_size);
		this->rect_image_list[rect_index]->unbind();

		*/

		ofSetColor(39, this->box2d_life_list[i] > 128 ? 255 : ofMap(this->box2d_life_list[i], 128, 0, 255, 0));
		ofNoFill();
		ofDrawPlane(glm::vec3(), this->rect_size, this->rect_size);

		ofPopMatrix();
	}

	ofSetLineWidth(3);
	ofSetColor(39);
	ofDrawRectangle(glm::vec3(), 720, 720);

	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();

ofDisableArbTex();

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

this->rect_size = 20;

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

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

auto image = make_unique<ofImage>();

image->allocate(this->rect_size, this->rect_size, OF_IMAGE_COLOR);

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

cv::Rect rect = cv::Rect(x, y, this->rect_size, this->rect_size);

this->rect_image_list.push_back(move(image));

this->cv_rect_list.push_back(rect);

this->rect_frame_list.push_back(frame);

}

auto file_path = "D:\\MP4\\VN20210917_145135.mp4";

this->cap.open(file_path);

this->number_of_frames = 0;

while(true) {

cv::Mat src, tmp;

this->cap >> src;

if (src.empty()) {

break;

}

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

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

this->frame_list.push_back(tmp);

this->number_of_frames++;

}

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->box2d_rect_list.size() - 1; i > -1; i--) {

this->box2d_life_list[i] -= 3;

if (this->box2d_life_list[i] < 0) {

this->box2d_rect_list.erase(this->box2d_rect_list.begin() + i);

this->box2d_frame_index_list.erase(this->box2d_frame_index_list.begin() + i);

this->box2d_rect_index_list.erase(this->box2d_rect_index_list.begin() + i);

this->box2d_life_list.erase(this->box2d_life_list.begin() + i);

this->box2d_color_list.erase(this->box2d_color_list.begin() + i);

}

if (ofGetFrameNum() % 5 == 0) {

int frame_index = (int)(ofGetFrameNum() * 0.5) % this->number_of_frames;

int next_frame_index = (frame_index + 1) % this->number_of_frames;

if (frame_index < next_frame_index) {

cv::Mat gap = this->frame_list[frame_index] - this->frame_list[next_frame_index];

vector<ofColor> base_color_list;

ofColor color;

vector<int> hex_list = { 0x247BA0, 0x70C1B3, 0xB2DBBF, 0xF3FFBD, 0xFF1654 };

for (auto hex : hex_list) {

color.setHex(hex);

base_color_list.push_back(color);

}

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

int x = this->cv_rect_list[i].x + this->rect_size * 0.5;

int y = this->cv_rect_list[i].y + this->rect_size * 0.5;

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

cv::Vec3b* color_value = this->frame_list[frame_index].ptr<cv::Vec3b>(y, 0);

cv::Vec3b gv = gap_value[x];

cv::Vec3b cv = color_value[x];

if ((gv[0] + gv[1] + gv[2]) > 80) {

int rect_index = i;

auto box2d_rect = make_shared<ofxBox2dRect>();

box2d_rect->setPhysics(0.5, 0.83, 0.1);

box2d_rect->setup(this->box2d.getWorld(), this->cv_rect_list[rect_index].x + 50, this->cv_rect_list[rect_index].y + 30, this->rect_size, this->rect_size);

this->box2d_rect_list.push_back(box2d_rect);

this->box2d_frame_index_list.push_back(next_frame_index);

this->box2d_rect_index_list.push_back(rect_index);

this->box2d_life_list.push_back(255);

this->box2d_color_list.push_back(base_color_list[ofRandom(base_color_list.size())]);

}

this->box2d.update();

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(180);

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

ofSetLineWidth(0.8);

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

ofPushMatrix();

ofTranslate(this->cv_rect_list[i].x + 50, this->cv_rect_list[i].y + 30, 1);

ofRotateX(180);

int frame_index = (int)(ofGetFrameNum() * 0.5) % this->number_of_frames;

cv::Mat tmp_box_image(this->frame_list[frame_index], this->cv_rect_list[i]);

tmp_box_image.copyTo(this->rect_frame_list[i]);

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

this->rect_image_list[i]->getTexture().bind();

ofSetColor(255);

ofFill();

ofDrawPlane(glm::vec3(), this->rect_size, this->rect_size);

this->rect_image_list[i]->unbind();

ofSetColor(39);

ofNoFill();

ofDrawPlane(glm::vec3(), this->rect_size, this->rect_size);

ofPopMatrix();

}

for (int i = 0; i < this->box2d_rect_list.size(); i++) {

ofPushMatrix();

ofTranslate(this->box2d_rect_list[i]->getPosition().x, this->box2d_rect_list[i]->getPosition().y, -1);

ofRotateX(180);

ofRotate(this->box2d_rect_list[i]->getRotation());

ofSetColor(this->box2d_color_list[i], this->box2d_life_list[i] > 128 ? 192 : ofMap(this->box2d_life_list[i], 128, 0, 192, 0));

ofFill();

ofDrawPlane(glm::vec3(), this->rect_size, this->rect_size);

int frame_index = this->box2d_frame_index_list[i];

int rect_index = this->box2d_rect_index_list[i];

cv::Mat tmp_box_image(this->frame_list[frame_index], this->cv_rect_list[rect_index]);

tmp_box_image.copyTo(this->rect_frame_list[rect_index]);

this->rect_image_list[rect_index]->update();

this->rect_image_list[rect_index]->getTexture().bind();

ofSetColor(255, this->box2d_life_list[i] > 128 ? 255 : ofMap(this->box2d_life_list[i], 128, 0, 255, 0));

ofFill();

ofDrawPlane(glm::vec3(), this->rect_size, this->rect_size);

this->rect_image_list[rect_index]->unbind();

ofSetColor(39, this->box2d_life_list[i] > 128 ? 255 : ofMap(this->box2d_life_list[i], 128, 0, 255, 0));

ofNoFill();

ofDrawPlane(glm::vec3(), this->rect_size, this->rect_size);

ofPopMatrix();

}

ofSetLineWidth(3);

ofSetColor(39);

ofDrawRectangle(glm::vec3(), 720, 720);

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210917

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2021年9月6日2021年9月6日

Switching big and small. Draw by openFrameworks

[ Video ]

[ About ]
ofxBox2の大きいサークルと小さいサークルの挙動の違いを見比べて楽しむ。

Enjoy comparing the differences in behavior between the large and small circles ofxBox2.

[ 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) {};

	ofEasyCam cam;

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

#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) {};

ofEasyCam cam;

ofxBox2d box2d;

vector<shared_ptr<ofxBox2dCircle>> circle_list;

vector<float> radius_list;

vector<float> life_list;

vector<ofColor> color_list;

};

#include "ofApp.h"

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

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

	ofBackground(239);

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

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

	vector<ofColor> base_color_list;
	ofColor color;
	vector<int> hex_list = { 0x247BA0, 0x70C1B3, 0xB2DBBF, 0xF3FFBD, 0xFF1654 };
	for (auto hex : hex_list) {

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

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

		this->life_list[i] -= 1;

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

	if (ofGetFrameNum() % 240 < 120) {

		for (int i = 0; i < 5; i++) {

			auto radius = ofRandom(2, 5);

			auto circle = make_shared<ofxBox2dCircle>();
			circle->setPhysics(0.5, 0.03, 0.1);
			circle->setup(this->box2d.getWorld(), ofRandom(ofGetWidth() * 0.35 - radius, ofGetWidth() * 0.35 + radius), 100 + radius, radius);
			circle->setRotation(ofRandom(360));
			this->circle_list.push_back(circle);
			this->radius_list.push_back(radius);
			this->life_list.push_back(250);

			this->color_list.push_back(base_color_list[ofRandom(base_color_list.size())]);
		}

	} else {

		for (int i = 0; i < 3; i++) {

			auto radius = ofRandom(5, 10);

			auto circle = make_shared<ofxBox2dCircle>();
			circle->setPhysics(0.5, 0.03, 0.1);
			circle->setup(this->box2d.getWorld(), ofRandom(ofGetWidth() * 0.65 - radius, ofGetWidth() * 0.65 + radius), 100 + radius, radius);
			circle->setRotation(ofRandom(360));
			this->circle_list.push_back(circle);
			this->radius_list.push_back(radius);
			this->life_list.push_back(250);

			this->color_list.push_back(base_color_list[ofRandom(base_color_list.size())]);
		}
	}

	this->box2d.update();
}

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

	this->cam.begin();
	ofRotateX(180);
	ofTranslate(ofGetWidth() * -0.5, ofGetHeight() * -0.5);

	ofSetLineWidth(1);
	for (int i = 0; i < this->circle_list.size(); i++) {

		ofFill();
		ofSetColor(this->color_list[i]);
		ofDrawCircle(glm::vec2(this->circle_list[i]->getPosition()), this->radius_list[i]);

		ofNoFill();
		ofSetColor(39);
		ofDrawCircle(glm::vec2(this->circle_list[i]->getPosition()), this->radius_list[i]);

	}

	ofSetLineWidth(3);
	ofSetColor(39);
	ofDrawRectangle(0, 0, 720, 720);

	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);

this->box2d.init();

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

this->box2d.createBounds();

this->box2d.setFPS(60);

this->box2d.registerGrabbing();

}

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

void ofApp::update() {

vector<ofColor> base_color_list;

ofColor color;

vector<int> hex_list = { 0x247BA0, 0x70C1B3, 0xB2DBBF, 0xF3FFBD, 0xFF1654 };

for (auto hex : hex_list) {

color.setHex(hex);

base_color_list.push_back(color);

}

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

this->life_list[i] -= 1;

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

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

}

if (ofGetFrameNum() % 240 < 120) {

for (int i = 0; i < 5; i++) {

auto radius = ofRandom(2, 5);

auto circle = make_shared<ofxBox2dCircle>();

circle->setPhysics(0.5, 0.03, 0.1);

circle->setup(this->box2d.getWorld(), ofRandom(ofGetWidth() * 0.35 - radius, ofGetWidth() * 0.35 + radius), 100 + radius, radius);

circle->setRotation(ofRandom(360));

this->circle_list.push_back(circle);

this->radius_list.push_back(radius);

this->life_list.push_back(250);

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

}

} else {

for (int i = 0; i < 3; i++) {

auto radius = ofRandom(5, 10);

auto circle = make_shared<ofxBox2dCircle>();

circle->setPhysics(0.5, 0.03, 0.1);

circle->setup(this->box2d.getWorld(), ofRandom(ofGetWidth() * 0.65 - radius, ofGetWidth() * 0.65 + radius), 100 + radius, radius);

circle->setRotation(ofRandom(360));

this->circle_list.push_back(circle);

this->radius_list.push_back(radius);

this->life_list.push_back(250);

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

}

this->box2d.update();

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(180);

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

ofSetLineWidth(1);

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

ofFill();

ofSetColor(this->color_list[i]);

ofDrawCircle(glm::vec2(this->circle_list[i]->getPosition()), this->radius_list[i]);

ofNoFill();

ofSetColor(39);

ofDrawCircle(glm::vec2(this->circle_list[i]->getPosition()), this->radius_list[i]);

}

ofSetLineWidth(3);

ofSetColor(39);

ofDrawRectangle(0, 0, 720, 720);

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210906

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[ Sponsor Link ]

2021年7月21日2021年7月21日

Fragile record. Draw by openFrameworks

[ Video ]

[ About ]
ofxBox2のポリゴンで矢印を描く。

Draw an arrow with the ofxBox2 polygon.

[ 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 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<ofColor> base_color_list;
	vector<glm::vec2> noise_param_list;

	vector<shared_ptr<ofxBox2dPolygon>> polygon_list;
	vector<float> polygon_life_list;
	vector<ofColor> polygon_color_list;
};

#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 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<ofColor> base_color_list;

vector<glm::vec2> noise_param_list;

vector<shared_ptr<ofxBox2dPolygon>> polygon_list;

vector<float> polygon_life_list;

vector<ofColor> polygon_color_list;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(2);

	this->box2d.init();
	this->box2d.setGravity(0, 30);
	this->box2d.createBounds();
	this->box2d.setFPS(60);

	this->base_color_list.push_back(ofColor(39));

	for (int i = 0; i < 2; i++) {

		this->noise_param_list.push_back(glm::vec2(ofRandom(1000), ofRandom(1000)));
	}
}

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

	if(ofGetFrameNum() % 10 == 0) {
		
		for (int i = 0; i < this->noise_param_list.size(); i++) {

			auto location = glm::vec2(
				ofMap(ofNoise(this->noise_param_list[i].x, ofGetFrameNum() * 0.008), 0, 1, 100, 620),
				ofMap(ofNoise(this->noise_param_list[i].y, ofGetFrameNum() * 0.008), 0, 1, 100, 360));
			auto target = glm::vec2(
				ofMap(ofNoise(this->noise_param_list[i].x, (ofGetFrameNum() + 1) * 0.008), 0, 1, 100, 620),
				ofMap(ofNoise(this->noise_param_list[i].y, (ofGetFrameNum() + 1) * 0.008), 0, 1, 100, 360));

			auto size = 30;
			auto angle = std::atan2(target.y - location.y, target.x - location.x);

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

			vector<glm::vec2> vertices;
			vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25);
			vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));
			vertices.push_back(location + glm::vec2(size * cos(angle), size * sin(angle)));
			vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));
			vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25);

			vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25);
			vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);
			vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);
			vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25);

			auto polygon = make_shared<ofxBox2dPolygon>();
			polygon->addTriangle(vertices[0], vertices[1], vertices[2]);
			polygon->setPhysics(1.0, 0.7, 0.3);
			polygon->create(box2d.getWorld());
			
			this->polygon_list.push_back(move(polygon));
			this->polygon_life_list.push_back(128);
			this->polygon_color_list.push_back(this->base_color_list[color_index]);

			polygon = make_shared<ofxBox2dPolygon>();
			polygon->addTriangle(vertices[0], vertices[2], vertices[4]);
			polygon->setPhysics(1.0, 0.7, 0.3);
			polygon->create(box2d.getWorld());

			this->polygon_list.push_back(move(polygon));
			this->polygon_life_list.push_back(128);
			this->polygon_color_list.push_back(this->base_color_list[color_index]);

			polygon = make_shared<ofxBox2dPolygon>();
			polygon->addTriangle(vertices[4], vertices[2], vertices[3]);
			polygon->setPhysics(1.0, 0.7, 0.3);
			polygon->create(box2d.getWorld());

			this->polygon_list.push_back(move(polygon));
			this->polygon_life_list.push_back(128);
			this->polygon_color_list.push_back(this->base_color_list[color_index]);

			polygon = make_shared<ofxBox2dPolygon>();
			polygon->addTriangle(vertices[5], vertices[6], vertices[7]);
			polygon->setPhysics(1.0, 0.7, 0.3);
			polygon->create(box2d.getWorld());

			this->polygon_list.push_back(move(polygon));
			this->polygon_life_list.push_back(128);
			this->polygon_color_list.push_back(this->base_color_list[color_index]);
			
			polygon = make_shared<ofxBox2dPolygon>();
			polygon->addTriangle(vertices[5], vertices[7], vertices[8]);
			polygon->setPhysics(1.0, 0.7, 0.3);
			polygon->create(box2d.getWorld());

			this->polygon_list.push_back(move(polygon));
			this->polygon_life_list.push_back(128);
			this->polygon_color_list.push_back(this->base_color_list[color_index]);
		}
	}

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

		this->polygon_life_list[i] -= 1;

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

			this->polygon_list[i]->destroy();
			this->polygon_list.erase(this->polygon_list.begin() + i);
			this->polygon_life_list.erase(this->polygon_life_list.begin() + i);
			this->polygon_color_list.erase(this->polygon_color_list.begin() + i);
		}
	}

	this->box2d.update();
}

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

	ofNoFill();
	ofSetColor(39);

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

		auto location = glm::vec2(
			ofMap(ofNoise(this->noise_param_list[i].x, ofGetFrameNum() * 0.008), 0, 1, 100, 620),
			ofMap(ofNoise(this->noise_param_list[i].y, ofGetFrameNum() * 0.008), 0, 1, 100, 360));
		auto target = glm::vec2(
			ofMap(ofNoise(this->noise_param_list[i].x, (ofGetFrameNum() + 1) * 0.008), 0, 1, 100, 620),
			ofMap(ofNoise(this->noise_param_list[i].y, (ofGetFrameNum() + 1) * 0.008), 0, 1, 100, 360));

		auto size = 30;
		auto angle = std::atan2(target.y - location.y, target.x - location.x);

		ofSetColor(39);
		ofNoFill();
		ofBeginShape();
		ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25);
		ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));
		ofVertex(location + glm::vec2(size * cos(angle), size * sin(angle)));
		ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));
		ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25);
		ofEndShape();

		ofBeginShape();
		ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25);
		ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);
		ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);
		ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25);
		ofEndShape();
	}

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

		if (this->polygon_life_list[i] > 64) {

			ofSetColor(this->polygon_color_list[i]);
		}
		else {

			ofSetColor(this->polygon_color_list[i], ofMap(this->polygon_life_list[i], 64, 0, 255, 0));
		}

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

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

ofSetLineWidth(2);

this->box2d.init();

this->box2d.setGravity(0, 30);

this->box2d.createBounds();

this->box2d.setFPS(60);

this->base_color_list.push_back(ofColor(39));

for (int i = 0; i < 2; i++) {

this->noise_param_list.push_back(glm::vec2(ofRandom(1000), ofRandom(1000)));

}

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

void ofApp::update() {

if(ofGetFrameNum() % 10 == 0) {

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

auto location = glm::vec2(

ofMap(ofNoise(this->noise_param_list[i].x, ofGetFrameNum() * 0.008), 0, 1, 100, 620),

ofMap(ofNoise(this->noise_param_list[i].y, ofGetFrameNum() * 0.008), 0, 1, 100, 360));

auto target = glm::vec2(

ofMap(ofNoise(this->noise_param_list[i].x, (ofGetFrameNum() + 1) * 0.008), 0, 1, 100, 620),

ofMap(ofNoise(this->noise_param_list[i].y, (ofGetFrameNum() + 1) * 0.008), 0, 1, 100, 360));

auto size = 30;

auto angle = std::atan2(target.y - location.y, target.x - location.x);

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

vector<glm::vec2> vertices;

vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25);

vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));

vertices.push_back(location + glm::vec2(size * cos(angle), size * sin(angle)));

vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));

vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25);

vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25);

vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);

vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);

vertices.push_back(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25);

auto polygon = make_shared<ofxBox2dPolygon>();

polygon->addTriangle(vertices[0], vertices[1], vertices[2]);

polygon->setPhysics(1.0, 0.7, 0.3);

polygon->create(box2d.getWorld());

this->polygon_list.push_back(move(polygon));

this->polygon_life_list.push_back(128);

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

polygon = make_shared<ofxBox2dPolygon>();

polygon->addTriangle(vertices[0], vertices[2], vertices[4]);

polygon->setPhysics(1.0, 0.7, 0.3);

polygon->create(box2d.getWorld());

this->polygon_list.push_back(move(polygon));

this->polygon_life_list.push_back(128);

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

polygon = make_shared<ofxBox2dPolygon>();

polygon->addTriangle(vertices[4], vertices[2], vertices[3]);

polygon->setPhysics(1.0, 0.7, 0.3);

polygon->create(box2d.getWorld());

this->polygon_list.push_back(move(polygon));

this->polygon_life_list.push_back(128);

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

polygon = make_shared<ofxBox2dPolygon>();

polygon->addTriangle(vertices[5], vertices[6], vertices[7]);

polygon->setPhysics(1.0, 0.7, 0.3);

polygon->create(box2d.getWorld());

this->polygon_list.push_back(move(polygon));

this->polygon_life_list.push_back(128);

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

polygon = make_shared<ofxBox2dPolygon>();

polygon->addTriangle(vertices[5], vertices[7], vertices[8]);

polygon->setPhysics(1.0, 0.7, 0.3);

polygon->create(box2d.getWorld());

this->polygon_list.push_back(move(polygon));

this->polygon_life_list.push_back(128);

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

}

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

this->polygon_life_list[i] -= 1;

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

this->polygon_list[i]->destroy();

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

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

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

}

this->box2d.update();

}

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

void ofApp::draw() {

ofNoFill();

ofSetColor(39);

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

auto location = glm::vec2(

ofMap(ofNoise(this->noise_param_list[i].x, ofGetFrameNum() * 0.008), 0, 1, 100, 620),

ofMap(ofNoise(this->noise_param_list[i].y, ofGetFrameNum() * 0.008), 0, 1, 100, 360));

auto target = glm::vec2(

ofMap(ofNoise(this->noise_param_list[i].x, (ofGetFrameNum() + 1) * 0.008), 0, 1, 100, 620),

ofMap(ofNoise(this->noise_param_list[i].y, (ofGetFrameNum() + 1) * 0.008), 0, 1, 100, 360));

auto size = 30;

auto angle = std::atan2(target.y - location.y, target.x - location.x);

ofSetColor(39);

ofNoFill();

ofBeginShape();

ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25);

ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));

ofVertex(location + glm::vec2(size * cos(angle), size * sin(angle)));

ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));

ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25);

ofEndShape();

ofBeginShape();

ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25);

ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);

ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);

ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25);

ofEndShape();

}

ofFill();

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

if (this->polygon_life_list[i] > 64) {

ofSetColor(this->polygon_color_list[i]);

}

else {

ofSetColor(this->polygon_color_list[i], ofMap(this->polygon_life_list[i], 64, 0, 255, 0));

}

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

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210721

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2024年4月
月	火	水	木	金	土	日
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8	9	10	11	12	13	14
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