ofMesh – ページ 52 – プログラミング de 落描き

2022年8月6日

Thorns from the sphere. Draw by openFrameworks

[ Video ]

[ About ]
球体から棘が生える。

[ 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 sphere_mesh, draw_sphere_mesh;

	float noise_param;
};

#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 sphere_mesh, draw_sphere_mesh;

float noise_param;

};

#include "ofApp.h"

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

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

	ofBackground(255);
	ofEnableDepthTest();

	auto ico_sphere = ofIcoSpherePrimitive(150, 4);
	this->sphere_mesh = ico_sphere.getMesh();

	this->noise_param = ofRandom(1000);
}

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

	this->noise_param += 0.005;

	this->draw_sphere_mesh = this->sphere_mesh;

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

		auto noise_value = ofNoise(glm::vec4(vertex * 0.025, noise_param));
		auto noise_param = (noise_value < 0.7 ? 1 : ofMap(noise_value, 0.7, 1, 1, 8));
		noise_param = std::pow(1.5, noise_param);
		auto noise_radius = 150 * noise_param;

		vertex = glm::normalize(vertex) * noise_radius;
	}
}

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

	this->cam.begin();
	ofRotateX(180);
	ofRotateY(ofGetFrameNum() * 0.5);
	ofRotateX(ofGetFrameNum() * 0.5);

	ofSetColor(0);
	this->draw_sphere_mesh.draw();

	ofSetColor(255);
	this->draw_sphere_mesh.drawWireframe();

	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(255);

ofEnableDepthTest();

auto ico_sphere = ofIcoSpherePrimitive(150, 4);

this->sphere_mesh = ico_sphere.getMesh();

this->noise_param = ofRandom(1000);

}

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

void ofApp::update() {

this->noise_param += 0.005;

this->draw_sphere_mesh = this->sphere_mesh;

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

auto noise_value = ofNoise(glm::vec4(vertex * 0.025, noise_param));

auto noise_param = (noise_value < 0.7 ? 1 : ofMap(noise_value, 0.7, 1, 1, 8));

noise_param = std::pow(1.5, noise_param);

auto noise_radius = 150 * noise_param;

vertex = glm::normalize(vertex) * noise_radius;

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(180);

ofRotateY(ofGetFrameNum() * 0.5);

ofRotateX(ofGetFrameNum() * 0.5);

ofSetColor(0);

this->draw_sphere_mesh.draw();

ofSetColor(255);

this->draw_sphere_mesh.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220806

2022年8月5日

Twins. Draw by openFrameworks

[ Video ]

[ About ]
対面。

[ 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;
};

#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;

};

#include "ofApp.h"	

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

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

	ofBackground(0);
	ofEnableDepthTest();
	ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);
}


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

	ofSeedRandom(39);
}

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

	this->cam.begin();

	for (int x = -220; x <= 220; x += 220) {

		for (int y = -220; y <= 220; y += 220) {

			int hue = ofRandom(255);
			ofColor color;

			auto rotate_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));
			for (float z = 30; z < 100; z += 5) {

				ofPushMatrix();
				ofTranslate(x, y);

				ofRotateZ(ofMap(ofNoise(rotate_seed.z, z * 0.0025 + ofGetFrameNum() * 0.0035), 0, 1, -540, 540));
				ofRotateY(ofMap(ofNoise(rotate_seed.y, z * 0.0025 + ofGetFrameNum() * 0.0035), 0, 1, -540, 540));
				ofRotateX(ofMap(ofNoise(rotate_seed.x, z * 0.0025 + ofGetFrameNum() * 0.0035), 0, 1, -540, 540));

				ofFill();
				color.setHsb(hue, 255, 255);
				ofSetColor(color, ofMap(z, 100, 30, 200, 55));
				ofDrawRectangle(0, 0, z, 35, 35);

				color.setHsb((hue + 128) % 255, 255, 155);
				ofSetColor(color, ofMap(z, 100, 30, 200, 55));
				ofDrawRectangle(0, 0, -z, 35, 35);

				ofNoFill();
				color.setHsb(hue, 255, 255);
				ofSetColor(color);
				ofDrawRectangle(0, 0, z, 35, 35);

				color.setHsb((hue + 128) % 255, 255, 255);
				ofSetColor(color);
				ofDrawRectangle(0, 0, -z, 35, 35);


				ofPopMatrix();
			}
		}
	}

	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);

ofEnableDepthTest();

ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

for (int x = -220; x <= 220; x += 220) {

for (int y = -220; y <= 220; y += 220) {

int hue = ofRandom(255);

ofColor color;

auto rotate_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

for (float z = 30; z < 100; z += 5) {

ofPushMatrix();

ofTranslate(x, y);

ofRotateZ(ofMap(ofNoise(rotate_seed.z, z * 0.0025 + ofGetFrameNum() * 0.0035), 0, 1, -540, 540));

ofRotateY(ofMap(ofNoise(rotate_seed.y, z * 0.0025 + ofGetFrameNum() * 0.0035), 0, 1, -540, 540));

ofRotateX(ofMap(ofNoise(rotate_seed.x, z * 0.0025 + ofGetFrameNum() * 0.0035), 0, 1, -540, 540));

ofFill();

color.setHsb(hue, 255, 255);

ofSetColor(color, ofMap(z, 100, 30, 200, 55));

ofDrawRectangle(0, 0, z, 35, 35);

color.setHsb((hue + 128) % 255, 255, 155);

ofSetColor(color, ofMap(z, 100, 30, 200, 55));

ofDrawRectangle(0, 0, -z, 35, 35);

ofNoFill();

color.setHsb(hue, 255, 255);

ofSetColor(color);

ofDrawRectangle(0, 0, z, 35, 35);

color.setHsb((hue + 128) % 255, 255, 255);

ofSetColor(color);

ofDrawRectangle(0, 0, -z, 35, 35);

ofPopMatrix();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220805

2022年8月3日

Pendulum of circle. Draw by openFrameworks

[ Video ]

[ About ]
円の振り子。

[ 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) {};

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

	ofEasyCam cam;
	glm::vec3 noise_seed;
};

#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) {};

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

ofEasyCam cam;

glm::vec3 noise_seed;

};

#include "ofApp.h"

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

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

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

	this->noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();

	float R = 250;
	float r = 50;
	float u_span = 10;

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

	int x = 0;
	int y = 0;

	for (int r = 50; r > 10; r -= 2) {

		int v_start = ofMap(sin(r * 0.05 - ofGetFrameNum() * 0.035), -1, 1, -200, 20);
		int v_end = v_start + 3;
		int v_span = 1;

		for (int v = v_start; v <= v_end; v += v_span) {

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

				face.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u - u_span * 0.5, v - v_span * 0.5));
				face.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u + u_span * 0.5, v - v_span * 0.5));
				face.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u + u_span * 0.5, v + v_span * 0.5));
				face.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u - u_span * 0.5, v + v_span * 0.5));

				line.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u - u_span * 0.5, v - v_span * 0.5));
				line.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u + u_span * 0.5, v - v_span * 0.5));
				line.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u + u_span * 0.5, v + v_span * 0.5));
				line.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u - u_span * 0.5, v + v_span * 0.5));

				for (int i = 0; i < 4; i++) {

					face.addColor(ofColor(0));
					line.addColor(ofColor(255, 0, 0));
				}

				face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2); face.addIndex(face.getNumVertices() - 3);
				face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 3); face.addIndex(face.getNumVertices() - 4);

				if (v == v_start) {

					line.addIndex(line.getNumVertices() - 3); line.addIndex(line.getNumVertices() - 4);
				}

				if (v == v_end) {

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

	face.draw();
	line.drawWireframe();

	this->cam.end();
}

//--------------------------------------------------------------
glm::vec3 ofApp::make_point(float R, float r, float u, float v) {

	// 数学デッサン教室 描いて楽しむ数学たち　P.31

	u *= DEG_TO_RAD;
	v *= DEG_TO_RAD;

	auto x = (R + r * cos(u)) * cos(v);
	auto y = (R + r * cos(u)) * sin(v);
	auto z = r * sin(u);

	return glm::vec3(x, y, z);
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(255);

ofSetLineWidth(2);

ofEnableDepthTest();

this->noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

float R = 250;

float r = 50;

float u_span = 10;

ofMesh face, line;

line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

int x = 0;

int y = 0;

for (int r = 50; r > 10; r -= 2) {

int v_start = ofMap(sin(r * 0.05 - ofGetFrameNum() * 0.035), -1, 1, -200, 20);

int v_end = v_start + 3;

int v_span = 1;

for (int v = v_start; v <= v_end; v += v_span) {

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

face.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u - u_span * 0.5, v - v_span * 0.5));

face.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u + u_span * 0.5, v - v_span * 0.5));

face.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u + u_span * 0.5, v + v_span * 0.5));

face.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u - u_span * 0.5, v + v_span * 0.5));

line.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u - u_span * 0.5, v - v_span * 0.5));

line.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u + u_span * 0.5, v - v_span * 0.5));

line.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u + u_span * 0.5, v + v_span * 0.5));

line.addVertex(glm::vec3(x, y, 0) + this->make_point(R, r, u - u_span * 0.5, v + v_span * 0.5));

for (int i = 0; i < 4; i++) {

face.addColor(ofColor(0));

line.addColor(ofColor(255, 0, 0));

}

face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2); face.addIndex(face.getNumVertices() - 3);

face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 3); face.addIndex(face.getNumVertices() - 4);

if (v == v_start) {

line.addIndex(line.getNumVertices() - 3); line.addIndex(line.getNumVertices() - 4);

}

if (v == v_end) {

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

}

face.draw();

line.drawWireframe();

this->cam.end();

}

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

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

// 数学デッサン教室描いて楽しむ数学たち　P.31

u *= DEG_TO_RAD;

v *= DEG_TO_RAD;

auto x = (R + r * cos(u)) * cos(v);

auto y = (R + r * cos(u)) * sin(v);

auto z = r * sin(u);

return glm::vec3(x, y, z);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220803

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