openframeworks – ページ 153 – プログラミング de 落描き

2022年6月1日

Invisible sphere. Draw by openFrameworks

[ Video ]

[ About ]
見えない球体と輪っか。

Invisible spheres and rings.

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp {

public:
	void setup();
	void update();
	void draw();

	void keyPressed(int key) {};
	void keyReleased(int key) {};
	void mouseMoved(int x, int y) {};
	void mouseDragged(int x, int y, int button) {};
	void mousePressed(int x, int y, int button) {};
	void mouseReleased(int x, int y, int button) {};
	void 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) {};

	void setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float height, ofColor face_color, ofColor frame_color);

	ofEasyCam cam;
	ofMesh face, frame;
};

#pragma once

#include "ofMain.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

void mouseMoved(int x, int y) {};

void mouseDragged(int x, int y, int button) {};

void mousePressed(int x, int y, int button) {};

void mouseReleased(int x, int y, int button) {};

void 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) {};

void setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float height, ofColor face_color, ofColor frame_color);

ofEasyCam cam;

ofMesh face, frame;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openFrameworks");

	ofBackground(0);
	ofEnableDepthTest();

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

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

}

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

	this->face.clear();
	this->frame.clear();

	this->cam.begin();

	auto radius = 200;

	ofSetColor(0);
	ofDrawSphere(radius);

	for (radius = radius + 50; radius < 300; radius += 5) {

		this->setRingToMesh(this->face, this->frame, glm::vec3(), radius, radius * 0.1, ofColor(0), ofColor(255));
	}

	this->face.draw();
	this->frame.drawWireframe();

	this->cam.end();
}

//--------------------------------------------------------------
void ofApp::setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float height, ofColor face_color, ofColor frame_color) {

	int index = face_target.getNumVertices();

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

		vector<glm::vec3> vertices;
		vertices.push_back(glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3(radius * cos((deg + 10) * DEG_TO_RAD), radius * sin((deg + 10) * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3(radius * cos((deg + 10) * DEG_TO_RAD), radius * sin((deg + 10) * DEG_TO_RAD), height * 0.5));
		vertices.push_back(glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), height * 0.5));

		for (auto& vertex : vertices) {

			auto noise_value_x = ofNoise(
				location.x, radius * 0.001 + ofGetFrameNum() * 0.003);
			auto noise_value_y = ofNoise(
				location.y, radius * 0.001 + ofGetFrameNum() * 0.003);
			auto noise_value_z = ofNoise(
				location.z, radius * 0.001 + ofGetFrameNum() * 0.003);

			auto rotation_x = glm::rotate(glm::mat4(), ofMap(noise_value_x, 0, 1, -PI * 2.5, PI * 2.5), glm::vec3(1, 0, 0));
			auto rotation_y = glm::rotate(glm::mat4(), ofMap(noise_value_y, 0, 1, -PI * 2.5, PI * 2.5), glm::vec3(0, 1, 0));
			auto rotation_z = glm::rotate(glm::mat4(), ofMap(noise_value_z, 0, 1, -PI * 2.5, PI * 2.5), glm::vec3(0, 0, 1));

			vertex = glm::vec4(vertex, 0) * rotation_y * rotation_x + glm::vec4(location, 0);
		}

		auto face_index = face_target.getNumVertices();
		face_target.addVertices(vertices);

		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2);
		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 3);

		auto frame_index = frame_target.getNumVertices();
		frame_target.addVertices(vertices);

		frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 1);
		frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 3);

		for (int i = 0; i < vertices.size(); i++) {

			face_target.addColor(face_color);
			frame_target.addColor(frame_color);
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

this->face.clear();

this->frame.clear();

this->cam.begin();

auto radius = 200;

ofSetColor(0);

ofDrawSphere(radius);

for (radius = radius + 50; radius < 300; radius += 5) {

this->setRingToMesh(this->face, this->frame, glm::vec3(), radius, radius * 0.1, ofColor(0), ofColor(255));

}

this->face.draw();

this->frame.drawWireframe();

this->cam.end();

}

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

void ofApp::setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float height, ofColor face_color, ofColor frame_color) {

int index = face_target.getNumVertices();

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

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3(radius * cos((deg + 10) * DEG_TO_RAD), radius * sin((deg + 10) * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3(radius * cos((deg + 10) * DEG_TO_RAD), radius * sin((deg + 10) * DEG_TO_RAD), height * 0.5));

vertices.push_back(glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), height * 0.5));

for (auto& vertex : vertices) {

auto noise_value_x = ofNoise(

location.x, radius * 0.001 + ofGetFrameNum() * 0.003);

auto noise_value_y = ofNoise(

location.y, radius * 0.001 + ofGetFrameNum() * 0.003);

auto noise_value_z = ofNoise(

location.z, radius * 0.001 + ofGetFrameNum() * 0.003);

auto rotation_x = glm::rotate(glm::mat4(), ofMap(noise_value_x, 0, 1, -PI * 2.5, PI * 2.5), glm::vec3(1, 0, 0));

auto rotation_y = glm::rotate(glm::mat4(), ofMap(noise_value_y, 0, 1, -PI * 2.5, PI * 2.5), glm::vec3(0, 1, 0));

auto rotation_z = glm::rotate(glm::mat4(), ofMap(noise_value_z, 0, 1, -PI * 2.5, PI * 2.5), glm::vec3(0, 0, 1));

vertex = glm::vec4(vertex, 0) * rotation_y * rotation_x + glm::vec4(location, 0);

}

auto face_index = face_target.getNumVertices();

face_target.addVertices(vertices);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 3);

auto frame_index = frame_target.getNumVertices();

frame_target.addVertices(vertices);

frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 1);

frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 3);

for (int i = 0; i < vertices.size(); i++) {

face_target.addColor(face_color);

frame_target.addColor(frame_color);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220601

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2022年5月31日

Connected spheres. Draw by openFrameworks

[ Video ]

[ About ]
サイズの異なる球体を線でつなぐ。

Connect spheres of different sizes with lines.

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp {

public:
	void setup();
	void update();
	void draw();

	void keyPressed(int key) {};
	void keyReleased(int key) {};
	void mouseMoved(int x, int y) {};
	void mouseDragged(int x, int y, int button) {};
	void mousePressed(int x, int y, int button) {};
	void mouseReleased(int x, int y, int button) {};
	void windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	ofEasyCam cam;

	ofMesh base_mesh, draw_mesh;
};

#pragma once

#include "ofMain.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

void mouseMoved(int x, int y) {};

void mouseDragged(int x, int y, int button) {};

void mousePressed(int x, int y, int button) {};

void mouseReleased(int x, int y, int button) {};

void windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofEasyCam cam;

ofMesh base_mesh, draw_mesh;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openFrameworks");

	ofBackground(0);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
	ofEnableDepthTest();

	auto ico_sphere = ofIcoSpherePrimitive(250, 3);
	this->base_mesh = ico_sphere.getMesh();
	this->draw_mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
}

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

	this->draw_mesh.clear();
	ofRotateX(270);

	for (auto v : this->base_mesh.getVertices()) {

		auto rotation = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec2(v.y * 0.001 + ofGetFrameNum() * 0.005)), 0, 1, -180, 180) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));

		auto tmp_v = glm::normalize(v) * 150;
		tmp_v = glm::vec4(tmp_v, 0) * rotation;

		this->draw_mesh.addVertex(v);
		this->draw_mesh.addVertex(tmp_v);

		this->draw_mesh.addIndex(this->draw_mesh.getNumVertices() - 1);
		this->draw_mesh.addIndex(this->draw_mesh.getNumVertices() - 2);

		this->draw_mesh.addColor(ofColor(0, 0, 255));
		this->draw_mesh.addColor(ofColor(255, 0, 0));
	}
}

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

	this->cam.begin();

	int index = 0;
	for (auto& vertex : this->draw_mesh.getVertices()) {

		ofSetColor(this->draw_mesh.getColor(index++));
		ofDrawSphere(vertex, 2);
	}

	this->draw_mesh.drawWireframe();

	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

ofEnableDepthTest();

auto ico_sphere = ofIcoSpherePrimitive(250, 3);

this->base_mesh = ico_sphere.getMesh();

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

}

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

void ofApp::update() {

this->draw_mesh.clear();

ofRotateX(270);

for (auto v : this->base_mesh.getVertices()) {

auto rotation = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec2(v.y * 0.001 + ofGetFrameNum() * 0.005)), 0, 1, -180, 180) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));

auto tmp_v = glm::normalize(v) * 150;

tmp_v = glm::vec4(tmp_v, 0) * rotation;

this->draw_mesh.addVertex(v);

this->draw_mesh.addVertex(tmp_v);

this->draw_mesh.addIndex(this->draw_mesh.getNumVertices() - 1);

this->draw_mesh.addIndex(this->draw_mesh.getNumVertices() - 2);

this->draw_mesh.addColor(ofColor(0, 0, 255));

this->draw_mesh.addColor(ofColor(255, 0, 0));

}

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

void ofApp::draw() {

this->cam.begin();

int index = 0;

for (auto& vertex : this->draw_mesh.getVertices()) {

ofSetColor(this->draw_mesh.getColor(index++));

ofDrawSphere(vertex, 2);

}

this->draw_mesh.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220531

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2022年5月30日

Silently spinning boxes. Draw by openFrameworks

[ Video ]

[ About ]
2017年9月8日の投稿をリメイク。

Remake of a September 8, 2017 post.

[ Source ]

#include "ofMain.h"

class ofApp : public ofBaseApp {

public:
	void setup();
	void update();
	void draw();

	void keyPressed(int key) {};
	void keyReleased(int key) {};
	void mouseMoved(int x, int y) {};
	void mouseDragged(int x, int y, int button) {};
	void mousePressed(int x, int y, int button) {};
	void mouseReleased(int x, int y, int button) {};
	void 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) {};

	ofEasyCam cam;
};

#include "ofMain.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

void mouseMoved(int x, int y) {};

void mouseDragged(int x, int y, int button) {};

void mousePressed(int x, int y, int button) {};

void mouseReleased(int x, int y, int button) {};

void 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) {};

ofEasyCam cam;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofEnableDepthTest();
}

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

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

	this->cam.begin();
	ofRotateX(90);

	auto radius = 300;

	for (int z = -300; z <= 300; z += 300) {

		for (auto deg = 0; deg < 360; deg += 10) {

			auto location = glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), z);

			ofPushMatrix();
			ofTranslate(location);
			ofRotateZ(deg);

			ofRotateY(deg + ofGetFrameNum());

			ofFill();
			ofSetColor(0);
			ofDrawBox(45);

			ofNoFill();
			ofSetColor(255);
			ofDrawBox(45);

			ofPopMatrix();
		}
	}

	this->cam.end();
}

//--------------------------------------------------------------
int main() {
	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofEnableDepthTest();

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(90);

auto radius = 300;

for (int z = -300; z <= 300; z += 300) {

for (auto deg = 0; deg < 360; deg += 10) {

auto location = glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), z);

ofPushMatrix();

ofTranslate(location);

ofRotateZ(deg);

ofRotateY(deg + ofGetFrameNum());

ofFill();

ofSetColor(0);

ofDrawBox(45);

ofNoFill();

ofSetColor(255);

ofDrawBox(45);

ofPopMatrix();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220530

[ほしいものリスト]
Amazon

[ Sponsor Link ]

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