2023年4月 – ページ 9 – プログラミング de 落描き

2023年4月6日

Building. Draw by openFrameworks

[ Video ]

[ About ]
建物。

[ 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) {};

	ofEasyCam cam;

	ofMesh face, line;
};

#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) {};

ofEasyCam cam;

ofMesh face, line;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(1.5);
	ofSetCircleResolution(60);
	ofEnableDepthTest();

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

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

	ofSeedRandom(39);

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

	auto span = 8;
	auto radius_span = 10;
	for (auto deg = 0; deg < 360; deg += 12) {

		for (auto radius = 150; radius <= 720; radius += radius_span) {

			auto prev_location = glm::vec2((radius - radius_span) * cos(deg * DEG_TO_RAD), (radius - radius_span) * sin(deg * DEG_TO_RAD));
			auto location = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
			auto next_location = glm::vec2((radius + radius_span) * cos(deg * DEG_TO_RAD), (radius + radius_span) * sin(deg * DEG_TO_RAD));

			auto left = glm::vec2(radius * cos((deg + span * 0.5) * DEG_TO_RAD), radius * sin((deg + span * 0.5) * DEG_TO_RAD));
			auto right = glm::vec2(radius * cos((deg - span * 0.5) * DEG_TO_RAD), radius * sin((deg - span * 0.5) * DEG_TO_RAD));
			auto next_left = glm::vec2((radius + radius_span) * cos((deg + span * 0.5) * DEG_TO_RAD), (radius + radius_span) * sin((deg + span * 0.5) * DEG_TO_RAD));
			auto next_right = glm::vec2((radius + radius_span) * cos((deg - span * 0.5) * DEG_TO_RAD), (radius + radius_span) * sin((deg - span * 0.5) * DEG_TO_RAD));

			auto prev_noise_value = ofNoise(glm::vec3(prev_location * 0.01, ofGetFrameNum() * 0.0085));
			auto noise_value = ofNoise(glm::vec3(location * 0.01, ofGetFrameNum() * 0.0085));
			auto next_noise_value = ofNoise(glm::vec3(next_location * 0.01, ofGetFrameNum() * 0.0085));
			auto threshold = 0.6;
			if (noise_value < threshold) {

				this->face.addVertex(glm::vec3(left, 0));
				this->face.addVertex(glm::vec3(next_left, 0));
				this->face.addVertex(glm::vec3(next_right, 0));
				this->face.addVertex(glm::vec3(right, 0));

				this->face.addVertex(glm::vec3(left, 150));
				this->face.addVertex(glm::vec3(next_left, 150));
				this->face.addVertex(glm::vec3(next_right, 150));
				this->face.addVertex(glm::vec3(right, 150));

				this->line.addVertex(glm::vec3(left, 0));
				this->line.addVertex(glm::vec3(next_left, 0));
				this->line.addVertex(glm::vec3(next_right, 0));
				this->line.addVertex(glm::vec3(right, 0));

				this->line.addVertex(glm::vec3(left, 150));
				this->line.addVertex(glm::vec3(next_left, 150));
				this->line.addVertex(glm::vec3(next_right, 150));
				this->line.addVertex(glm::vec3(right, 150));

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

				this->face.addIndex(this->face.getNumVertices() - 5); this->face.addIndex(this->face.getNumVertices() - 6); this->face.addIndex(this->face.getNumVertices() - 7);
				this->face.addIndex(this->face.getNumVertices() - 5); this->face.addIndex(this->face.getNumVertices() - 7); this->face.addIndex(this->face.getNumVertices() - 8);

				this->face.addIndex(this->face.getNumVertices() - 1); this->face.addIndex(this->face.getNumVertices() - 5); this->face.addIndex(this->face.getNumVertices() - 6);
				this->face.addIndex(this->face.getNumVertices() - 1); this->face.addIndex(this->face.getNumVertices() - 6); this->face.addIndex(this->face.getNumVertices() - 2);

				this->face.addIndex(this->face.getNumVertices() - 4); this->face.addIndex(this->face.getNumVertices() - 7); this->face.addIndex(this->face.getNumVertices() - 8);
				this->face.addIndex(this->face.getNumVertices() - 4); this->face.addIndex(this->face.getNumVertices() - 7); this->face.addIndex(this->face.getNumVertices() - 3);

				this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);
				this->line.addIndex(this->line.getNumVertices() - 3); this->line.addIndex(this->line.getNumVertices() - 4);

				this->line.addIndex(this->line.getNumVertices() - 5); this->line.addIndex(this->line.getNumVertices() - 6);
				this->line.addIndex(this->line.getNumVertices() - 7); this->line.addIndex(this->line.getNumVertices() - 8);

				if (radius == 150 || prev_noise_value > threshold) {

					this->face.addIndex(this->face.getNumVertices() - 4); this->face.addIndex(this->face.getNumVertices() - 8); this->face.addIndex(this->face.getNumVertices() - 5);
					this->face.addIndex(this->face.getNumVertices() - 4); this->face.addIndex(this->face.getNumVertices() - 5); this->face.addIndex(this->face.getNumVertices() - 1);

					this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 4);
					this->line.addIndex(this->line.getNumVertices() - 5); this->line.addIndex(this->line.getNumVertices() - 8);

					this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 5);
					this->line.addIndex(this->line.getNumVertices() - 4); this->line.addIndex(this->line.getNumVertices() - 8);
				}
				if (radius == 360 || next_noise_value > threshold) {

					this->face.addIndex(this->face.getNumVertices() - 3); this->face.addIndex(this->face.getNumVertices() - 7); this->face.addIndex(this->face.getNumVertices() - 6);
					this->face.addIndex(this->face.getNumVertices() - 3); this->face.addIndex(this->face.getNumVertices() - 6); this->face.addIndex(this->face.getNumVertices() - 2);

					this->line.addIndex(this->line.getNumVertices() - 2); this->line.addIndex(this->line.getNumVertices() - 3);
					this->line.addIndex(this->line.getNumVertices() - 6); this->line.addIndex(this->line.getNumVertices() - 7);

					this->line.addIndex(this->line.getNumVertices() - 2); this->line.addIndex(this->line.getNumVertices() - 6);
					this->line.addIndex(this->line.getNumVertices() - 3); this->line.addIndex(this->line.getNumVertices() - 7);
				}
			}
		}
	}
}

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

	this->cam.begin();
	ofRotateX(315);
	ofRotateZ(ofGetFrameNum() * 0.3333333);

	ofSetColor(0);
	ofFill();
	ofDrawCircle(glm::vec2(), 135);

	this->face.draw();

	ofSetColor(255);
	ofNoFill();
	ofDrawCircle(glm::vec2(), 135);

	this->line.drawWireframe();

	this->cam.end();
}

//--------------------------------------------------------------
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(239);

ofSetLineWidth(1.5);

ofSetCircleResolution(60);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->line.clear();

auto span = 8;

auto radius_span = 10;

for (auto deg = 0; deg < 360; deg += 12) {

for (auto radius = 150; radius <= 720; radius += radius_span) {

auto prev_location = glm::vec2((radius - radius_span) * cos(deg * DEG_TO_RAD), (radius - radius_span) * sin(deg * DEG_TO_RAD));

auto location = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));

auto next_location = glm::vec2((radius + radius_span) * cos(deg * DEG_TO_RAD), (radius + radius_span) * sin(deg * DEG_TO_RAD));

auto left = glm::vec2(radius * cos((deg + span * 0.5) * DEG_TO_RAD), radius * sin((deg + span * 0.5) * DEG_TO_RAD));

auto right = glm::vec2(radius * cos((deg - span * 0.5) * DEG_TO_RAD), radius * sin((deg - span * 0.5) * DEG_TO_RAD));

auto next_left = glm::vec2((radius + radius_span) * cos((deg + span * 0.5) * DEG_TO_RAD), (radius + radius_span) * sin((deg + span * 0.5) * DEG_TO_RAD));

auto next_right = glm::vec2((radius + radius_span) * cos((deg - span * 0.5) * DEG_TO_RAD), (radius + radius_span) * sin((deg - span * 0.5) * DEG_TO_RAD));

auto prev_noise_value = ofNoise(glm::vec3(prev_location * 0.01, ofGetFrameNum() * 0.0085));

auto noise_value = ofNoise(glm::vec3(location * 0.01, ofGetFrameNum() * 0.0085));

auto next_noise_value = ofNoise(glm::vec3(next_location * 0.01, ofGetFrameNum() * 0.0085));

auto threshold = 0.6;

if (noise_value < threshold) {

this->face.addVertex(glm::vec3(left, 0));

this->face.addVertex(glm::vec3(next_left, 0));

this->face.addVertex(glm::vec3(next_right, 0));

this->face.addVertex(glm::vec3(right, 0));

this->face.addVertex(glm::vec3(left, 150));

this->face.addVertex(glm::vec3(next_left, 150));

this->face.addVertex(glm::vec3(next_right, 150));

this->face.addVertex(glm::vec3(right, 150));

this->line.addVertex(glm::vec3(left, 0));

this->line.addVertex(glm::vec3(next_left, 0));

this->line.addVertex(glm::vec3(next_right, 0));

this->line.addVertex(glm::vec3(right, 0));

this->line.addVertex(glm::vec3(left, 150));

this->line.addVertex(glm::vec3(next_left, 150));

this->line.addVertex(glm::vec3(next_right, 150));

this->line.addVertex(glm::vec3(right, 150));

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

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

this->face.addIndex(this->face.getNumVertices() - 5); this->face.addIndex(this->face.getNumVertices() - 6); this->face.addIndex(this->face.getNumVertices() - 7);

this->face.addIndex(this->face.getNumVertices() - 5); this->face.addIndex(this->face.getNumVertices() - 7); this->face.addIndex(this->face.getNumVertices() - 8);

this->face.addIndex(this->face.getNumVertices() - 1); this->face.addIndex(this->face.getNumVertices() - 5); this->face.addIndex(this->face.getNumVertices() - 6);

this->face.addIndex(this->face.getNumVertices() - 1); this->face.addIndex(this->face.getNumVertices() - 6); this->face.addIndex(this->face.getNumVertices() - 2);

this->face.addIndex(this->face.getNumVertices() - 4); this->face.addIndex(this->face.getNumVertices() - 7); this->face.addIndex(this->face.getNumVertices() - 8);

this->face.addIndex(this->face.getNumVertices() - 4); this->face.addIndex(this->face.getNumVertices() - 7); this->face.addIndex(this->face.getNumVertices() - 3);

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

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

this->line.addIndex(this->line.getNumVertices() - 5); this->line.addIndex(this->line.getNumVertices() - 6);

this->line.addIndex(this->line.getNumVertices() - 7); this->line.addIndex(this->line.getNumVertices() - 8);

if (radius == 150 || prev_noise_value > threshold) {

this->face.addIndex(this->face.getNumVertices() - 4); this->face.addIndex(this->face.getNumVertices() - 8); this->face.addIndex(this->face.getNumVertices() - 5);

this->face.addIndex(this->face.getNumVertices() - 4); this->face.addIndex(this->face.getNumVertices() - 5); this->face.addIndex(this->face.getNumVertices() - 1);

this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 4);

this->line.addIndex(this->line.getNumVertices() - 5); this->line.addIndex(this->line.getNumVertices() - 8);

this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 5);

this->line.addIndex(this->line.getNumVertices() - 4); this->line.addIndex(this->line.getNumVertices() - 8);

}

if (radius == 360 || next_noise_value > threshold) {

this->face.addIndex(this->face.getNumVertices() - 3); this->face.addIndex(this->face.getNumVertices() - 7); this->face.addIndex(this->face.getNumVertices() - 6);

this->face.addIndex(this->face.getNumVertices() - 3); this->face.addIndex(this->face.getNumVertices() - 6); this->face.addIndex(this->face.getNumVertices() - 2);

this->line.addIndex(this->line.getNumVertices() - 2); this->line.addIndex(this->line.getNumVertices() - 3);

this->line.addIndex(this->line.getNumVertices() - 6); this->line.addIndex(this->line.getNumVertices() - 7);

this->line.addIndex(this->line.getNumVertices() - 2); this->line.addIndex(this->line.getNumVertices() - 6);

this->line.addIndex(this->line.getNumVertices() - 3); this->line.addIndex(this->line.getNumVertices() - 7);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(315);

ofRotateZ(ofGetFrameNum() * 0.3333333);

ofSetColor(0);

ofFill();

ofDrawCircle(glm::vec2(), 135);

this->face.draw();

ofSetColor(255);

ofNoFill();

ofDrawCircle(glm::vec2(), 135);

this->line.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20230406

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2023年4月5日

thorny torus. Draw by openFrameworks

[ Video ]

[ About ]
とげトーラス。

[ 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;
	ofMesh face_mesh, frame_mesh;

	vector<glm::vec3> location_list;
	vector<float> height_list;
};

#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;

vector<glm::vec3> location_list;

vector<float> height_list;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofEnableDepthTest();

	for (auto v = 0; v < 360; v += 5) {

		for (auto u = 0; u < 360; u += 8) {

			this->location_list.push_back(this->make_point(200, 50, u, v));
			this->height_list.push_back(0);
		}
	}

	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 = 50;
	auto v_span = 5;
	auto u_span = 8;

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

		auto noise_value = ofNoise(glm::vec4(this->location_list[i], ofGetFrameNum() * 0.005));
		if (noise_value > 0.85) {

			this->height_list[i] < 100 ? this->height_list[i] += ofMap(noise_value, 0.85, 1, 0, 20) : 100;
		}
		else {

			this->height_list[i] > 0 ? this->height_list[i] -= 1 : 0;
		}
	}

	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, ofGetFrameNum() * 0.01));
			auto height = this->height_list[index++];

			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);

			// 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();
	ofRotateX(120);
	ofRotateZ(ofGetFrameNum() * 0.6666666666666666);

	ofSetColor(0);
	this->face_mesh.drawFaces();

	ofSetColor(255);
	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(239);

ofEnableDepthTest();

for (auto v = 0; v < 360; v += 5) {

for (auto u = 0; u < 360; u += 8) {

this->location_list.push_back(this->make_point(200, 50, u, v));

this->height_list.push_back(0);

}

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 = 50;

auto v_span = 5;

auto u_span = 8;

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

auto noise_value = ofNoise(glm::vec4(this->location_list[i], ofGetFrameNum() * 0.005));

if (noise_value > 0.85) {

this->height_list[i] < 100 ? this->height_list[i] += ofMap(noise_value, 0.85, 1, 0, 20) : 100;

}

else {

this->height_list[i] > 0 ? this->height_list[i] -= 1 : 0;

}

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, ofGetFrameNum() * 0.01));

auto height = this->height_list[index++];

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);

// 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();

ofRotateX(120);

ofRotateZ(ofGetFrameNum() * 0.6666666666666666);

ofSetColor(0);

this->face_mesh.drawFaces();

ofSetColor(255);

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/Insta20230405

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Waving. Draw by openFrameworks

[ Video ]

[ About ]
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[ 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 face, line;
};

#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 face, line;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(0);

	ofEnableDepthTest();
	ofSetLineWidth(1);

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

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

	ofSeedRandom(39);

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

	auto noise_param = glm::vec3(ofRandom(360), ofRandom(360), ofRandom(360));

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

		auto rotation = glm::vec3(
			ofMap(ofNoise(noise_param.x, radius * 0.005 - ofGetFrameNum() * 0.03), 0, 1, -30, 30),
			ofMap(ofNoise(noise_param.y, radius * 0.005 - ofGetFrameNum() * 0.03), 0, 1, -30, 30),
			ofMap(ofNoise(noise_param.z, radius * 0.005 - ofGetFrameNum() * 0.03), 0, 1, -30, 30));
	
		auto rotation_x = glm::rotate(glm::mat4(), rotation.x * (float)DEG_TO_RAD, glm::vec3(1, 0, 0));
		auto rotation_y = glm::rotate(glm::mat4(), rotation.y * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));
		auto rotation_z = glm::rotate(glm::mat4(), rotation.z * (float)DEG_TO_RAD, glm::vec3(0, 0, 1));

		int start_index = this->line.getNumVertices();
		int index = start_index;
		for (int deg = 0; deg < 360; deg += 1) {

			auto vertex = glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0);

			if (radius % 100 != 0) {

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

			this->face.addVertex(vertex);
			this->line.addVertex(vertex);

			if (deg > 0) {

				this->line.addIndex(index - 1);
				this->line.addIndex(index);
			}

			index++;
		}

		this->line.addIndex(this->line.getNumVertices() - 1);
		this->line.addIndex(start_index);
	}

	int index_span = 1;
	for (int index = 0; index < this->face.getNumVertices() - 361; index += index_span) {

		this->face.addIndex(index); this->face.addIndex(index + 1); this->face.addIndex(index + 361);
		this->face.addIndex(index); this->face.addIndex(index + 361); this->face.addIndex(index + 360);
	}

	index_span = 30;
	for (int index = 0; index < this->line.getNumVertices() - 360; index += index_span) {

		this->line.addIndex(index);
		this->line.addIndex(index + 360);
	}
}

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

	this->cam.begin();
	ofRotateZ(ofGetFrameNum());

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

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

	this->cam.end();
}

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

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

100

101

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(0);

ofEnableDepthTest();

ofSetLineWidth(1);

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->line.clear();

auto noise_param = glm::vec3(ofRandom(360), ofRandom(360), ofRandom(360));

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

auto rotation = glm::vec3(

ofMap(ofNoise(noise_param.x, radius * 0.005 - ofGetFrameNum() * 0.03), 0, 1, -30, 30),

ofMap(ofNoise(noise_param.y, radius * 0.005 - ofGetFrameNum() * 0.03), 0, 1, -30, 30),

ofMap(ofNoise(noise_param.z, radius * 0.005 - ofGetFrameNum() * 0.03), 0, 1, -30, 30));

auto rotation_x = glm::rotate(glm::mat4(), rotation.x * (float)DEG_TO_RAD, glm::vec3(1, 0, 0));

auto rotation_y = glm::rotate(glm::mat4(), rotation.y * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));

auto rotation_z = glm::rotate(glm::mat4(), rotation.z * (float)DEG_TO_RAD, glm::vec3(0, 0, 1));

int start_index = this->line.getNumVertices();

int index = start_index;

for (int deg = 0; deg < 360; deg += 1) {

auto vertex = glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0);

if (radius % 100 != 0) {

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

}

this->face.addVertex(vertex);

this->line.addVertex(vertex);

if (deg > 0) {

this->line.addIndex(index - 1);

this->line.addIndex(index);

}

index++;

}

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

this->line.addIndex(start_index);

}

int index_span = 1;

for (int index = 0; index < this->face.getNumVertices() - 361; index += index_span) {

this->face.addIndex(index); this->face.addIndex(index + 1); this->face.addIndex(index + 361);

this->face.addIndex(index); this->face.addIndex(index + 361); this->face.addIndex(index + 360);

}

index_span = 30;

for (int index = 0; index < this->line.getNumVertices() - 360; index += index_span) {

this->line.addIndex(index);

this->line.addIndex(index + 360);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateZ(ofGetFrameNum());

ofSetColor(0);

this->face.draw();

ofSetColor(255);

this->line.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20230404

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2023年4月
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