noise – ページ 30 – プログラミング de 落描き

2023年4月20日

Scattering arrows. Draw by openFrameworks

[ Video ]

[ About ]
散る矢印。

[ 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) {};

	ofTrueTypeFont font;
	vector<glm::vec2> location_list;

	void draw_arrow(glm::vec2 location, glm::vec2 next_location, float size, ofColor fill_color, ofColor no_fill_color);
};

#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) {};

ofTrueTypeFont font;

vector<glm::vec2> location_list;

void draw_arrow(glm::vec2 location, glm::vec2 next_location, float size, ofColor fill_color, ofColor no_fill_color);

};

#include "ofApp.h"

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

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

	ofBackground(239);

	this->font.loadFont("fonts/Kazesawa-Bold.ttf", 580, true, true, true);

}

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

	ofSeedRandom(39);

	if (ofGetFrameNum() % 30 == 0) {

		this->location_list.clear();
		
		ofFbo fbo;
		fbo.allocate(ofGetWidth(), ofGetHeight());
		fbo.begin();
		ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);
		ofClear(0);
		ofSetColor(0);

		string word = std::to_string((ofGetFrameNum() / 30) % 10);
		font.drawString(word, font.stringWidth(word) * -0.5, font.stringHeight(word) - 320);

		fbo.end();

		auto span = 20;
		ofPixels pixels;
		fbo.readToPixels(pixels);
		for (int x = 60; x < 700; x += span) {

			for (int y = 0; y < 720; y += span) {

				ofColor color = pixels.getColor(x, y);
				if (color != ofColor(0, 0)) {

					this->location_list.push_back(glm::vec3(x - ofGetWidth() * 0.5, y - ofGetHeight() * 0.45, 0));
				}
			}
		}
	}
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	int span = 20;
	for (auto& location : this->location_list) {

		auto x = location.x;
		auto y = location.y;

		auto p = ofGetFrameNum() % 30;
		auto next_p = (ofGetFrameNum() + 1) % 30;

		auto param = p < 5 ? 0 : p < 15 ? ofMap(p, 5, 15, 0, 1) : p < 25 ? 1 : ofMap(p, 25, 30, 1, 0);
		auto next_param = next_p < 5 ? 0 : next_p < 15 ? ofMap(next_p, 5, 15, 0, 1) : next_p < 25 ? 1 : ofMap(next_p, 25, 30, 1, 0);

		auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));

		auto param_x = ofMap(ofNoise(noise_seed.x, ofGetFrameNum() * 0.01), 0, 1, span * -5, span * 5) * param;
		auto param_y = ofMap(ofNoise(noise_seed.y, ofGetFrameNum() * 0.01), 0, 1, span * -5, span * 5) * param;

		auto next_param_x = ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + 1) * 0.01), 0, 1, span * -5, span * 5) * next_param;
		auto next_param_y = ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + 1) * 0.01), 0, 1, span * -5, span * 5) * next_param;

		if (param > 0) {

			this->draw_arrow(glm::vec2(x + param_x, y + param_y), glm::vec2(x + next_param_x, y + next_param_y), span, ofColor(0), ofColor(255));
		}
		else {

			ofSetColor(0);
			ofFill();
			ofDrawCircle(x + param_x, y + param_y, span * 0.35);
			
			ofSetColor(255);
			ofNoFill();
			ofDrawCircle(x + param_x, y + param_y, span * 0.35);
		}
	}
}

//--------------------------------------------------------------
void ofApp::draw_arrow(glm::vec2 location, glm::vec2 next_location, float size, ofColor fill_color, ofColor no_fill_color) {

	auto angle = std::atan2(next_location.y - location.y, next_location.x - location.x);

	ofSetColor(fill_color);
	ofFill();
	ofBeginShape();
	ofVertex(glm::vec2(size * 0.8 * cos(angle), size * 0.8 * sin(angle)) + location);
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) + location);
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) + location);
	ofEndShape(true);

	ofBeginShape();
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 + location);
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 + location);
	ofEndShape(true);

	ofSetColor(no_fill_color);
	ofNoFill();
	ofBeginShape();
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 + location);
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) + location);
	ofVertex(glm::vec2(size * 0.8 * cos(angle), size * 0.8 * sin(angle)) + location);
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) + location);
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 + location);
	ofEndShape();

	ofBeginShape();
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 + location);
	ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);
	ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 + location);
	ofEndShape();
}

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

this->font.loadFont("fonts/Kazesawa-Bold.ttf", 580, true, true, true);

}

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

void ofApp::update() {

ofSeedRandom(39);

if (ofGetFrameNum() % 30 == 0) {

this->location_list.clear();

ofFbo fbo;

fbo.allocate(ofGetWidth(), ofGetHeight());

fbo.begin();

ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

ofClear(0);

ofSetColor(0);

string word = std::to_string((ofGetFrameNum() / 30) % 10);

font.drawString(word, font.stringWidth(word) * -0.5, font.stringHeight(word) - 320);

fbo.end();

auto span = 20;

ofPixels pixels;

fbo.readToPixels(pixels);

for (int x = 60; x < 700; x += span) {

for (int y = 0; y < 720; y += span) {

ofColor color = pixels.getColor(x, y);

if (color != ofColor(0, 0)) {

this->location_list.push_back(glm::vec3(x - ofGetWidth() * 0.5, y - ofGetHeight() * 0.45, 0));

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

int span = 20;

for (auto& location : this->location_list) {

auto x = location.x;

auto y = location.y;

auto p = ofGetFrameNum() % 30;

auto next_p = (ofGetFrameNum() + 1) % 30;

auto param = p < 5 ? 0 : p < 15 ? ofMap(p, 5, 15, 0, 1) : p < 25 ? 1 : ofMap(p, 25, 30, 1, 0);

auto next_param = next_p < 5 ? 0 : next_p < 15 ? ofMap(next_p, 5, 15, 0, 1) : next_p < 25 ? 1 : ofMap(next_p, 25, 30, 1, 0);

auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));

auto param_x = ofMap(ofNoise(noise_seed.x, ofGetFrameNum() * 0.01), 0, 1, span * -5, span * 5) * param;

auto param_y = ofMap(ofNoise(noise_seed.y, ofGetFrameNum() * 0.01), 0, 1, span * -5, span * 5) * param;

auto next_param_x = ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + 1) * 0.01), 0, 1, span * -5, span * 5) * next_param;

auto next_param_y = ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + 1) * 0.01), 0, 1, span * -5, span * 5) * next_param;

if (param > 0) {

this->draw_arrow(glm::vec2(x + param_x, y + param_y), glm::vec2(x + next_param_x, y + next_param_y), span, ofColor(0), ofColor(255));

}

else {

ofSetColor(0);

ofFill();

ofDrawCircle(x + param_x, y + param_y, span * 0.35);

ofSetColor(255);

ofNoFill();

ofDrawCircle(x + param_x, y + param_y, span * 0.35);

}

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

void ofApp::draw_arrow(glm::vec2 location, glm::vec2 next_location, float size, ofColor fill_color, ofColor no_fill_color) {

auto angle = std::atan2(next_location.y - location.y, next_location.x - location.x);

ofSetColor(fill_color);

ofFill();

ofBeginShape();

ofVertex(glm::vec2(size * 0.8 * cos(angle), size * 0.8 * sin(angle)) + location);

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) + location);

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) + location);

ofEndShape(true);

ofBeginShape();

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 + location);

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 + location);

ofEndShape(true);

ofSetColor(no_fill_color);

ofNoFill();

ofBeginShape();

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 + location);

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) + location);

ofVertex(glm::vec2(size * 0.8 * cos(angle), size * 0.8 * sin(angle)) + location);

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) + location);

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 + location);

ofEndShape();

ofBeginShape();

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 + location);

ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location);

ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 + location);

ofEndShape();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20230420

2023年4月17日

Color vortex. Draw by openFrameworks

[ Video ]

[ About ]
色渦。

[ 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;

	vector<float> radius_list;
	vector<float> deg_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) {};

ofEasyCam cam;

ofMesh face, line;

vector<float> radius_list;

vector<float> deg_list;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofSetLineWidth(2);

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

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

	for (int i = 0; i < 2000; i++) {

		this->radius_list.push_back(ofRandom(1000));
		this->deg_list.push_back(ofRandom(360));
	}
}
//--------------------------------------------------------------
void ofApp::update() {

	ofSeedRandom(39);

	this->face.clear();
	int threshold_radius = 150;

	for (int radius = 0; radius <= 1000; radius += 10) {

		int start_index = this->line.getNumVertices();
		int index = start_index;
		int deg_start = radius;
		for (float deg = deg_start; deg < deg_start + 360; deg += 0.5) {

			auto z = radius > threshold_radius ? 0 : ofMap(radius, 0, threshold_radius, -1 * pow(threshold_radius - radius, 1.1), 0);
			int next_radius = radius + 10;
			int next_z = next_radius > threshold_radius ? 0 : ofMap(next_radius, 0, threshold_radius, -1 * pow(threshold_radius - next_radius, 1.1), 0);

			vector<glm::vec3> vertices;
			vertices.push_back(glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), z));
			vertices.push_back(glm::vec3(radius * cos((deg + 1) * DEG_TO_RAD), radius * sin((deg + 1) * DEG_TO_RAD), z));
			vertices.push_back(glm::vec3(next_radius * cos((deg + 1) * DEG_TO_RAD), next_radius * sin((deg + 1) * DEG_TO_RAD), next_z));
			vertices.push_back(glm::vec3(next_radius * cos(deg * DEG_TO_RAD), next_radius * sin(deg * DEG_TO_RAD), next_z));

			face.addVertices(vertices);

			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);
		}
	}

	this->line.clear();

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

		int speed = 5;
		int radius_start = ((int)(this->radius_list[i] + speed) % 1000);
		int radius = 1000 - radius_start;
		float deg_start = this->deg_list[i] + (radius > threshold_radius ? 1 : ofMap(radius, 0, threshold_radius, pow(speed, ofMap(radius, 0, threshold_radius, 2, 1)), 1));
		float deg = deg_start;
		ofColor color;
		color.setHsb(ofRandom(255), 255, 150);

		for (int k = 0; k < 15; k++) {

			radius = ((int)(this->radius_list[i] + speed * k) % 1000);
			radius = 1000 - radius;

			deg += (radius > threshold_radius ? 1 : ofMap(radius, 1, threshold_radius, pow(speed, ofMap(radius, 0, threshold_radius, 2, 1)), 1));

			auto z = radius > threshold_radius ? 0 : ofMap(radius, 0, threshold_radius, -1 * pow(threshold_radius - radius, 1.1), 0);
			auto vertex = glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), z + 2);
			this->line.addVertex(vertex);
			this->line.addColor(ofColor(color));

			if (k > 0) {

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

		}

		this->radius_list[i] = radius_start;
		this->deg_list[i] = deg_start;
	}
}

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

	this->cam.begin();
	ofRotateX(-35);

	ofSetColor(0);
	this->face.draw();
	ofSetColor(255);
	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(0);

ofSetLineWidth(2);

ofEnableDepthTest();

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

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

for (int i = 0; i < 2000; i++) {

this->radius_list.push_back(ofRandom(1000));

this->deg_list.push_back(ofRandom(360));

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

int threshold_radius = 150;

for (int radius = 0; radius <= 1000; radius += 10) {

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

int index = start_index;

int deg_start = radius;

for (float deg = deg_start; deg < deg_start + 360; deg += 0.5) {

auto z = radius > threshold_radius ? 0 : ofMap(radius, 0, threshold_radius, -1 * pow(threshold_radius - radius, 1.1), 0);

int next_radius = radius + 10;

int next_z = next_radius > threshold_radius ? 0 : ofMap(next_radius, 0, threshold_radius, -1 * pow(threshold_radius - next_radius, 1.1), 0);

vector<glm::vec3> vertices;

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

vertices.push_back(glm::vec3(radius * cos((deg + 1) * DEG_TO_RAD), radius * sin((deg + 1) * DEG_TO_RAD), z));

vertices.push_back(glm::vec3(next_radius * cos((deg + 1) * DEG_TO_RAD), next_radius * sin((deg + 1) * DEG_TO_RAD), next_z));

vertices.push_back(glm::vec3(next_radius * cos(deg * DEG_TO_RAD), next_radius * sin(deg * DEG_TO_RAD), next_z));

face.addVertices(vertices);

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);

}

this->line.clear();

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

int speed = 5;

int radius_start = ((int)(this->radius_list[i] + speed) % 1000);

int radius = 1000 - radius_start;

float deg_start = this->deg_list[i] + (radius > threshold_radius ? 1 : ofMap(radius, 0, threshold_radius, pow(speed, ofMap(radius, 0, threshold_radius, 2, 1)), 1));

float deg = deg_start;

ofColor color;

color.setHsb(ofRandom(255), 255, 150);

for (int k = 0; k < 15; k++) {

radius = ((int)(this->radius_list[i] + speed * k) % 1000);

radius = 1000 - radius;

deg += (radius > threshold_radius ? 1 : ofMap(radius, 1, threshold_radius, pow(speed, ofMap(radius, 0, threshold_radius, 2, 1)), 1));

auto z = radius > threshold_radius ? 0 : ofMap(radius, 0, threshold_radius, -1 * pow(threshold_radius - radius, 1.1), 0);

auto vertex = glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), z + 2);

this->line.addVertex(vertex);

this->line.addColor(ofColor(color));

if (k > 0) {

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

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

}

this->radius_list[i] = radius_start;

this->deg_list[i] = deg_start;

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(-35);

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/Insta20230417

2023年4月16日

Sedimentation. Draw by openFrameworks

[ Video ]

[ About ]
沈降。

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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) {};

	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 windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofEasyCam cam;

ofMesh face, frame;

};

#include "ofApp.h"

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

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

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

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

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

	ofSeedRandom(39);

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

	int radius = 250;
	float phi_deg_step = 3;
	float theta_deg_step = 3;

	for (float phi_deg = 0; phi_deg < 360; phi_deg += phi_deg_step) {

		for (float theta_deg = 0; theta_deg < 90; theta_deg += theta_deg_step) {

			auto index = this->face.getNumVertices();
			vector<glm::vec3> vertices;

			vertices.push_back(glm::vec3(
				radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),
				radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),
				radius * cos((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD)));
			vertices.push_back(glm::vec3(
				radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),
				radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),
				radius * cos((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD)));
			vertices.push_back(glm::vec3(
				radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),
				radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),
				radius * cos((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD)));
			vertices.push_back(glm::vec3(
				radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),
				radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),
				radius * cos((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD)));

			for (auto& vertex : vertices) {

				if (vertex.z > 0) {

					vertex.z = 0;
					auto len = glm::length(vertex);
					auto noise_value = ofNoise(vertex.x * 0.005, vertex.y * 0.005, ofGetFrameNum() * 0.03 - len * 0.006);
					if (noise_value > 0.55) {

						vertex.z = ofMap(noise_value, 0.55, 1, 0, -500) * ofMap(len, 0, radius, 1, 0);
					}
				}
			}

			this->face.addVertices(vertices);

			for (auto& vertex : vertices) {

				if (vertex.z > 0) {

					vertex.z += 1;
				}
			}

			this->frame.addVertices(vertices);

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

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

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

				auto color_value = this->face.getVertex(i).z < 0 ? ofMap(this->face.getVertex(i).z, 0, -200, 0, 255) : 0;
				this->face.addColor(ofColor(255));
				this->frame.addColor(ofColor(0));
			}
		}
	}
}

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

	this->cam.begin();
	ofRotateZ(ofGetFrameNum() * 0.4);

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

	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);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

int radius = 250;

float phi_deg_step = 3;

float theta_deg_step = 3;

for (float phi_deg = 0; phi_deg < 360; phi_deg += phi_deg_step) {

for (float theta_deg = 0; theta_deg < 90; theta_deg += theta_deg_step) {

auto index = this->face.getNumVertices();

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(

radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),

radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),

radius * cos((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD)));

vertices.push_back(glm::vec3(

radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),

radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),

radius * cos((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD)));

vertices.push_back(glm::vec3(

radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),

radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),

radius * cos((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD)));

vertices.push_back(glm::vec3(

radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),

radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),

radius * cos((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD)));

for (auto& vertex : vertices) {

if (vertex.z > 0) {

vertex.z = 0;

auto len = glm::length(vertex);

auto noise_value = ofNoise(vertex.x * 0.005, vertex.y * 0.005, ofGetFrameNum() * 0.03 - len * 0.006);

if (noise_value > 0.55) {

vertex.z = ofMap(noise_value, 0.55, 1, 0, -500) * ofMap(len, 0, radius, 1, 0);

}

this->face.addVertices(vertices);

for (auto& vertex : vertices) {

if (vertex.z > 0) {

vertex.z += 1;

}

this->frame.addVertices(vertices);

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

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

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

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

this->frame.addIndex(index + 3); this->frame.addIndex(index + 1);

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

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

auto color_value = this->face.getVertex(i).z < 0 ? ofMap(this->face.getVertex(i).z, 0, -200, 0, 255) : 0;

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

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

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateZ(ofGetFrameNum() * 0.4);

this->face.draw();

this->frame.draw();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20230416

2025年5月
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