Incomplete torus. Draw by openFrameworks – プログラミング de 落描き

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不完全トーラス。

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#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;
	ofMesh face_mesh, frame_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) {};

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

ofEasyCam cam;

ofMesh face_mesh, frame_mesh;

};

#include "ofApp.h"

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

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

	ofBackground(255);
	ofEnableDepthTest();

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

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

	ofSeedRandom(39);

	this->face_mesh.clear();
	this->frame_mesh.clear();

	auto R = 200;
	auto r = 10;
	auto v_span = 3;
	auto u_span = 6;

	int index = 0;
	for (auto v = 0; v < 360; v += v_span) {

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

			auto noise_seed = this->make_point(R, r, u + u_span * 0.5, v + v_span * 0.5);
			auto noise_value = ofNoise(glm::vec4(noise_seed * 0.02, ofGetFrameNum() * 0.01));
			auto height = 30;
			if (noise_value < 0.55) {
				
				height = ofMap(noise_value, 0, 0.55, 0, 10);
			}

			vector<glm::vec3> vertices;
			vertices.push_back(this->make_point(R, r, u, v));
			vertices.push_back(this->make_point(R, r, u + u_span, v));
			vertices.push_back(this->make_point(R, r, u + u_span, v + v_span));
			vertices.push_back(this->make_point(R, r, u, v + v_span));
			vertices.push_back(this->make_point(R, r + height, u, v));
			vertices.push_back(this->make_point(R, r + height, u + u_span, v));
			vertices.push_back(this->make_point(R, r + height, u + u_span, v + v_span));
			vertices.push_back(this->make_point(R, r + height, u, v + v_span));

			int index = this->face_mesh.getNumVertices();
			this->face_mesh.addVertices(vertices);
			this->frame_mesh.addVertices(vertices);

			for (int i = 0; i < 8; i++) {

				if (i < 4) {

					this->face_mesh.addColor(ofColor(255));
					this->frame_mesh.addColor(ofColor(0));
				}
				else {

					this->face_mesh.addColor(ofColor(ofMap(height, 0, 30, 0, 255)));
					this->frame_mesh.addColor(ofColor(0));
				}
			}

			// Face Index

			this->face_mesh.addIndex(index + 0); this->face_mesh.addIndex(index + 1); this->face_mesh.addIndex(index + 2);
			this->face_mesh.addIndex(index + 0); this->face_mesh.addIndex(index + 2); this->face_mesh.addIndex(index + 3);

			this->face_mesh.addIndex(index + 4); this->face_mesh.addIndex(index + 5); this->face_mesh.addIndex(index + 6);
			this->face_mesh.addIndex(index + 4); this->face_mesh.addIndex(index + 6); this->face_mesh.addIndex(index + 7);

			this->face_mesh.addIndex(index + 0); this->face_mesh.addIndex(index + 4); this->face_mesh.addIndex(index + 5);
			this->face_mesh.addIndex(index + 0); this->face_mesh.addIndex(index + 5); this->face_mesh.addIndex(index + 1);

			this->face_mesh.addIndex(index + 1); this->face_mesh.addIndex(index + 5); this->face_mesh.addIndex(index + 6);
			this->face_mesh.addIndex(index + 1); this->face_mesh.addIndex(index + 6); this->face_mesh.addIndex(index + 2);

			this->face_mesh.addIndex(index + 2); this->face_mesh.addIndex(index + 6); this->face_mesh.addIndex(index + 7);
			this->face_mesh.addIndex(index + 2); this->face_mesh.addIndex(index + 7); this->face_mesh.addIndex(index + 3);

			this->face_mesh.addIndex(index + 3); this->face_mesh.addIndex(index + 7); this->face_mesh.addIndex(index + 4);
			this->face_mesh.addIndex(index + 3); this->face_mesh.addIndex(index + 4); this->face_mesh.addIndex(index + 0);

			// Frame Index

			this->frame_mesh.addIndex(index + 0); this->frame_mesh.addIndex(index + 1);
			this->frame_mesh.addIndex(index + 1); this->frame_mesh.addIndex(index + 2);
			this->frame_mesh.addIndex(index + 2); this->frame_mesh.addIndex(index + 3);
			this->frame_mesh.addIndex(index + 3); this->frame_mesh.addIndex(index + 0);

			this->frame_mesh.addIndex(index + 4); this->frame_mesh.addIndex(index + 5);
			this->frame_mesh.addIndex(index + 5); this->frame_mesh.addIndex(index + 6);
			this->frame_mesh.addIndex(index + 6); this->frame_mesh.addIndex(index + 7);
			this->frame_mesh.addIndex(index + 7); this->frame_mesh.addIndex(index + 4);

			this->frame_mesh.addIndex(index + 0); this->frame_mesh.addIndex(index + 4);
			this->frame_mesh.addIndex(index + 1); this->frame_mesh.addIndex(index + 5);
			this->frame_mesh.addIndex(index + 2); this->frame_mesh.addIndex(index + 6);
			this->frame_mesh.addIndex(index + 3); this->frame_mesh.addIndex(index + 7);
		}
	}
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.6666666666666666);

	this->face_mesh.drawFaces();
	this->frame_mesh.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(60);

ofSetWindowTitle("openframeworks");

ofBackground(255);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face_mesh.clear();

this->frame_mesh.clear();

auto R = 200;

auto r = 10;

auto v_span = 3;

auto u_span = 6;

int index = 0;

for (auto v = 0; v < 360; v += v_span) {

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

auto noise_seed = this->make_point(R, r, u + u_span * 0.5, v + v_span * 0.5);

auto noise_value = ofNoise(glm::vec4(noise_seed * 0.02, ofGetFrameNum() * 0.01));

auto height = 30;

if (noise_value < 0.55) {

height = ofMap(noise_value, 0, 0.55, 0, 10);

}

vector<glm::vec3> vertices;

vertices.push_back(this->make_point(R, r, u, v));

vertices.push_back(this->make_point(R, r, u + u_span, v));

vertices.push_back(this->make_point(R, r, u + u_span, v + v_span));

vertices.push_back(this->make_point(R, r, u, v + v_span));

vertices.push_back(this->make_point(R, r + height, u, v));

vertices.push_back(this->make_point(R, r + height, u + u_span, v));

vertices.push_back(this->make_point(R, r + height, u + u_span, v + v_span));

vertices.push_back(this->make_point(R, r + height, u, v + v_span));

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

this->face_mesh.addVertices(vertices);

this->frame_mesh.addVertices(vertices);

for (int i = 0; i < 8; i++) {

if (i < 4) {

this->face_mesh.addColor(ofColor(255));

this->frame_mesh.addColor(ofColor(0));

}

else {

this->face_mesh.addColor(ofColor(ofMap(height, 0, 30, 0, 255)));

this->frame_mesh.addColor(ofColor(0));

}

// Face Index

this->face_mesh.addIndex(index + 0); this->face_mesh.addIndex(index + 1); this->face_mesh.addIndex(index + 2);

this->face_mesh.addIndex(index + 0); this->face_mesh.addIndex(index + 2); this->face_mesh.addIndex(index + 3);

this->face_mesh.addIndex(index + 4); this->face_mesh.addIndex(index + 5); this->face_mesh.addIndex(index + 6);

this->face_mesh.addIndex(index + 4); this->face_mesh.addIndex(index + 6); this->face_mesh.addIndex(index + 7);

this->face_mesh.addIndex(index + 0); this->face_mesh.addIndex(index + 4); this->face_mesh.addIndex(index + 5);

this->face_mesh.addIndex(index + 0); this->face_mesh.addIndex(index + 5); this->face_mesh.addIndex(index + 1);

this->face_mesh.addIndex(index + 1); this->face_mesh.addIndex(index + 5); this->face_mesh.addIndex(index + 6);

this->face_mesh.addIndex(index + 1); this->face_mesh.addIndex(index + 6); this->face_mesh.addIndex(index + 2);

this->face_mesh.addIndex(index + 2); this->face_mesh.addIndex(index + 6); this->face_mesh.addIndex(index + 7);

this->face_mesh.addIndex(index + 2); this->face_mesh.addIndex(index + 7); this->face_mesh.addIndex(index + 3);

this->face_mesh.addIndex(index + 3); this->face_mesh.addIndex(index + 7); this->face_mesh.addIndex(index + 4);

this->face_mesh.addIndex(index + 3); this->face_mesh.addIndex(index + 4); this->face_mesh.addIndex(index + 0);

// Frame Index

this->frame_mesh.addIndex(index + 0); this->frame_mesh.addIndex(index + 1);

this->frame_mesh.addIndex(index + 1); this->frame_mesh.addIndex(index + 2);

this->frame_mesh.addIndex(index + 2); this->frame_mesh.addIndex(index + 3);

this->frame_mesh.addIndex(index + 3); this->frame_mesh.addIndex(index + 0);

this->frame_mesh.addIndex(index + 4); this->frame_mesh.addIndex(index + 5);

this->frame_mesh.addIndex(index + 5); this->frame_mesh.addIndex(index + 6);

this->frame_mesh.addIndex(index + 6); this->frame_mesh.addIndex(index + 7);

this->frame_mesh.addIndex(index + 7); this->frame_mesh.addIndex(index + 4);

this->frame_mesh.addIndex(index + 0); this->frame_mesh.addIndex(index + 4);

this->frame_mesh.addIndex(index + 1); this->frame_mesh.addIndex(index + 5);

this->frame_mesh.addIndex(index + 2); this->frame_mesh.addIndex(index + 6);

this->frame_mesh.addIndex(index + 3); this->frame_mesh.addIndex(index + 7);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.6666666666666666);

this->face_mesh.drawFaces();

this->frame_mesh.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/Insta20220824

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