box2d – ページ 5 – プログラミング de 落描き

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

2020年8月20日2020年8月28日

Magatama drop. Draw by openFrameworks

[ Video ]

[ About ]
勾玉ドロップ。

Magatama drop.

[ 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) {};

	void draw_MAGATAMA(glm::vec2 location, float radius, float rotate_deg, ofColor color);

	vector<ofColor> base_color_list;

	ofxBox2d box2d;
	vector<shared_ptr<ofxBox2dCircle>> circle_list;
	vector<float> radius_list;
	vector<pair<ofColor, ofColor>> color_list;
	vector<float> life_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) {};

void draw_MAGATAMA(glm::vec2 location, float radius, float rotate_deg, ofColor color);

vector<ofColor> base_color_list;

ofxBox2d box2d;

vector<shared_ptr<ofxBox2dCircle>> circle_list;

vector<float> radius_list;

vector<pair<ofColor, ofColor>> color_list;

vector<float> life_list;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(2);

	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] -= 0.75;

		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);
		}
	}

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

		auto radius = ofRandom(10, 50);

		auto circle = make_shared<ofxBox2dCircle>();
		circle->setPhysics(0.5, 0.83, 0.1);
		circle->setup(this->box2d.getWorld(), ofRandom(ofGetWidth() * 0.5 - radius, ofGetWidth() * 0.5 + radius), radius, radius);
		circle->setRotation(ofRandom(360));
		this->circle_list.push_back(circle);
		this->radius_list.push_back(radius);

		int color_index_1 = ofRandom(this->base_color_list.size());
		int color_index_2 = ofRandom(this->base_color_list.size());

		auto color = make_pair(this->base_color_list[color_index_1], this->base_color_list[color_index_2]);
		this->color_list.push_back(color);
		this->life_list.push_back(255);
	}

	this->box2d.update();
}

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

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

		this->draw_MAGATAMA(glm::vec2(this->circle_list[i]->getPosition()), this->radius_list[i], this->circle_list[i]->getRotation(), ofColor(this->color_list[i].first, this->life_list[i] > 64 ? 255 : ofMap(this->life_list[i], 64, 0, 255, 0)));
		this->draw_MAGATAMA(glm::vec2(this->circle_list[i]->getPosition()), this->radius_list[i], this->circle_list[i]->getRotation() + 180, ofColor(this->color_list[i].second, this->life_list[i] > 64 ? 255 : ofMap(this->life_list[i], 64, 0, 255, 0)));
	}
}

//--------------------------------------------------------------
void ofApp::draw_MAGATAMA(glm::vec2 location, float radius, float rotate_deg, ofColor color) {

	float len = radius * 0.5522;
	float deg = 0;

	ofPushMatrix();
	ofTranslate(location);
	ofRotate(rotate_deg);

	vector<glm::vec2> vertices;
	vector<pair<glm::vec2, glm::vec2>> handle_list;

	vertices.push_back(glm::vec2(0, 0));
	deg = 180;
	handle_list.push_back(make_pair<glm::vec2, glm::vec2>(
		glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos(deg * DEG_TO_RAD), len * 0.5 * sin(deg * DEG_TO_RAD))),
		glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos((deg + 180) * DEG_TO_RAD), len * 0.5 * sin((deg + 180) * DEG_TO_RAD)))));

	vertices.push_back(glm::vec2(radius * 0.5, radius * -0.5));
	deg = 90;
	handle_list.push_back(make_pair<glm::vec2, glm::vec2>(
		glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos(deg * DEG_TO_RAD), len * 0.5 * sin(deg * DEG_TO_RAD))),
		glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos((deg + 180) * DEG_TO_RAD), len * 0.5 * sin((deg + 180) * DEG_TO_RAD)))));

	vertices.push_back(glm::vec2(0, radius * -1));
	deg = 0;
	handle_list.push_back(make_pair<glm::vec2, glm::vec2>(
		glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos(deg * DEG_TO_RAD), len * 0.5 * sin(deg * DEG_TO_RAD))),
		glm::vec2(vertices.back() + glm::vec2(len * cos(deg * DEG_TO_RAD), len  * sin(deg * DEG_TO_RAD)))));

	vertices.push_back(glm::vec2(radius, 0));
	deg = 270;
	handle_list.push_back(make_pair<glm::vec2, glm::vec2>(
		glm::vec2(vertices.back() + glm::vec2(len * cos(deg * DEG_TO_RAD), len * sin(deg * DEG_TO_RAD))),
		glm::vec2(vertices.back() + glm::vec2(len * cos((deg + 180) * DEG_TO_RAD), len * sin((deg + 180) * DEG_TO_RAD)))));

	vertices.push_back(glm::vec2(0, radius));
	deg = 0;
	handle_list.push_back(make_pair<glm::vec2, glm::vec2>(
		glm::vec2(vertices.back() + glm::vec2(len * cos(deg * DEG_TO_RAD), len * sin(deg * DEG_TO_RAD))),
		glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos((deg + 180) * DEG_TO_RAD), len * 0.5 * sin((deg + 180) * DEG_TO_RAD)))));

	vertices.push_back(glm::vec2(radius * -0.5, radius * 0.5));
	deg = 90;
	handle_list.push_back(make_pair<glm::vec2, glm::vec2>(
		glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos(deg * DEG_TO_RAD), len * 0.5 * sin(deg * DEG_TO_RAD))),
		glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos((deg + 180) * DEG_TO_RAD), len * 0.5 * sin((deg + 180) * DEG_TO_RAD)))));

	ofSetColor(color);
	ofFill();
	ofBeginShape();
	for (int i = 0; i < vertices.size(); i++) {

		int n = (i + 1) % vertices.size();

		ofVertex(vertices[i]);
		ofBezierVertex(handle_list[i].second, handle_list[n].first, vertices[n]);
	}

	ofNextContour(true);
	for (deg = 0; deg <= 360; deg += 5) {

		ofVertex(glm::vec2(0, radius * 0.5) + glm::vec2(radius * 0.2 * cos(deg * DEG_TO_RAD), radius * 0.2 * sin(deg * DEG_TO_RAD)));
	}
	ofEndShape(true);

	ofSetColor(ofColor(39, color.a));
	ofNoFill();
	ofBeginShape();
	for (int i = 0; i < vertices.size(); i++) {

		int n = (i + 1) % vertices.size();

		ofVertex(vertices[i]);
		ofBezierVertex(handle_list[i].second, handle_list[n].first, vertices[n]);
	}

	ofNextContour(true);
	for (deg = 0; deg <= 360; deg += 5) {

		ofVertex(glm::vec2(0, radius * 0.5) + glm::vec2(radius * 0.2 * cos(deg * DEG_TO_RAD), radius * 0.2 * sin(deg * DEG_TO_RAD)));
	}
	ofEndShape(true);

	ofPopMatrix();
}

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

ofSetColor(2);

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] -= 0.75;

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);

}

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

auto radius = ofRandom(10, 50);

auto circle = make_shared<ofxBox2dCircle>();

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

circle->setup(this->box2d.getWorld(), ofRandom(ofGetWidth() * 0.5 - radius, ofGetWidth() * 0.5 + radius), radius, radius);

circle->setRotation(ofRandom(360));

this->circle_list.push_back(circle);

this->radius_list.push_back(radius);

int color_index_1 = ofRandom(this->base_color_list.size());

int color_index_2 = ofRandom(this->base_color_list.size());

auto color = make_pair(this->base_color_list[color_index_1], this->base_color_list[color_index_2]);

this->color_list.push_back(color);

this->life_list.push_back(255);

}

this->box2d.update();

}

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

void ofApp::draw() {

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

this->draw_MAGATAMA(glm::vec2(this->circle_list[i]->getPosition()), this->radius_list[i], this->circle_list[i]->getRotation(), ofColor(this->color_list[i].first, this->life_list[i] > 64 ? 255 : ofMap(this->life_list[i], 64, 0, 255, 0)));

this->draw_MAGATAMA(glm::vec2(this->circle_list[i]->getPosition()), this->radius_list[i], this->circle_list[i]->getRotation() + 180, ofColor(this->color_list[i].second, this->life_list[i] > 64 ? 255 : ofMap(this->life_list[i], 64, 0, 255, 0)));

}

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

void ofApp::draw_MAGATAMA(glm::vec2 location, float radius, float rotate_deg, ofColor color) {

float len = radius * 0.5522;

float deg = 0;

ofPushMatrix();

ofTranslate(location);

ofRotate(rotate_deg);

vector<glm::vec2> vertices;

vector<pair<glm::vec2, glm::vec2>> handle_list;

vertices.push_back(glm::vec2(0, 0));

deg = 180;