RandomWalk – ページ 63 – プログラミング de 落描き

2021年2月5日2021年2月5日

Connection light. Draw by openFrameworks

[ Video ]

[ About ]
Connection light.

[ 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) {};

	int number_of_targets;
	vector<glm::vec2> target_list;
	vector<glm::vec3> color_list;
	ofShader shader;

	bool calculate_angle(glm::vec2 location_1, float radius_1, glm::vec2 location_2, float radius_2, double& theta, double& a);
};

#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) {};

int number_of_targets;

vector<glm::vec2> target_list;

vector<glm::vec3> color_list;

ofShader shader;

bool calculate_angle(glm::vec2 location_1, float radius_1, glm::vec2 location_2, float radius_2, double& theta, double& a);

};

#include "ofApp.h"	

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

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

	ofBackground(0);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
	ofSetColor(255);

	this->number_of_targets = 30;
	for (int i = 0; i < this->number_of_targets; i++) {

		this->target_list.push_back(glm::vec2());
		this->color_list.push_back(glm::vec3(1, 1, 1));
	}

	this->shader.load("shader/shader.vert", "shader/shader.frag");
}

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

	ofSeedRandom(39);
}

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

	vector<glm::vec2> location_list;
	vector<float> deg_list;

	for (int i = 0; i < this->number_of_targets; i++) {

		location_list.push_back(glm::vec2(
			ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.002), 0, 1, 50, ofGetWidth() - 50),
			ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.002), 0, 1, 50, ofGetHeight() - 50)));
		deg_list.push_back(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -180, 180));
	}

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

		int near_count = 0;
		for (int k = 0; k < location_list.size(); k++) {

			if (i == k) { continue; }

			auto distance = glm::distance(location_list[i], location_list[k]);
			if (distance < 100) {

				auto handle_1 = location_list[i] + glm::vec2(50 * cos(deg_list[i] * DEG_TO_RAD), 50 * sin(deg_list[i] * DEG_TO_RAD));
				auto handle_2 = location_list[k] + glm::vec2(50 * cos(deg_list[k] * DEG_TO_RAD), 50 * sin(deg_list[k] * DEG_TO_RAD));

				ofNoFill();
				ofBeginShape();
				ofVertex(location_list[i]);
				ofBezierVertex(handle_1, handle_2, location_list[k]);
				ofEndShape();

				near_count++;
			}
		}

		float value = near_count > 3 ? 1.5 : ofMap(near_count, 0, 3, 0.2, 1.5);
		this->target_list[i] = location_list[i];
		this->color_list[i] = glm::vec3(value);
	}

	ofFill();
	this->shader.begin();
	this->shader.setUniform1f("time", ofGetElapsedTimef());
	this->shader.setUniform2f("resolution", ofGetWidth(), ofGetHeight());
	this->shader.setUniform2fv("targets", &this->target_list[0].x, this->number_of_targets);
	this->shader.setUniform3fv("colors", &this->color_list[0].x, this->number_of_targets);

	ofDrawRectangle(0, 0, ofGetWidth(), ofGetHeight());

	this->shader.end();
}

//--------------------------------------------------------------
bool ofApp::calculate_angle(glm::vec2 location_1, float radius_1, glm::vec2 location_2, float radius_2, double& theta, double& a) {

	auto distance = glm::distance(location_1, location_2);
	if (distance > radius_1 + radius_2 || distance < radius_1 - radius_2) { return false; }

	theta = atan2(location_2.y - location_1.y, location_2.x - location_1.x);
	auto cos_a = (pow(distance, 2) + pow(radius_1, 2) - pow(radius_2, 2)) / (2 * distance * radius_1);
	a = acos(cos_a);
	return true;
}

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

	ofGLWindowSettings settings;
	settings.setGLVersion(3, 2);
	settings.setSize(720, 720);
	ofCreateWindow(settings);
	ofRunApp(new ofApp());
}

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

ofSetColor(255);

this->number_of_targets = 30;

for (int i = 0; i < this->number_of_targets; i++) {

this->target_list.push_back(glm::vec2());

this->color_list.push_back(glm::vec3(1, 1, 1));

}

this->shader.load("shader/shader.vert", "shader/shader.frag");

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

vector<glm::vec2> location_list;

vector<float> deg_list;

for (int i = 0; i < this->number_of_targets; i++) {

location_list.push_back(glm::vec2(

ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.002), 0, 1, 50, ofGetWidth() - 50),

ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.002), 0, 1, 50, ofGetHeight() - 50)));

deg_list.push_back(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -180, 180));

}

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

int near_count = 0;

for (int k = 0; k < location_list.size(); k++) {

if (i == k) { continue; }

auto distance = glm::distance(location_list[i], location_list[k]);

if (distance < 100) {

auto handle_1 = location_list[i] + glm::vec2(50 * cos(deg_list[i] * DEG_TO_RAD), 50 * sin(deg_list[i] * DEG_TO_RAD));

auto handle_2 = location_list[k] + glm::vec2(50 * cos(deg_list[k] * DEG_TO_RAD), 50 * sin(deg_list[k] * DEG_TO_RAD));

ofNoFill();

ofBeginShape();

ofVertex(location_list[i]);

ofBezierVertex(handle_1, handle_2, location_list[k]);

ofEndShape();

near_count++;

}

float value = near_count > 3 ? 1.5 : ofMap(near_count, 0, 3, 0.2, 1.5);

this->target_list[i] = location_list[i];

this->color_list[i] = glm::vec3(value);

}

ofFill();

this->shader.begin();

this->shader.setUniform1f("time", ofGetElapsedTimef());

this->shader.setUniform2f("resolution", ofGetWidth(), ofGetHeight());

this->shader.setUniform2fv("targets", &this->target_list[0].x, this->number_of_targets);

this->shader.setUniform3fv("colors", &this->color_list[0].x, this->number_of_targets);

ofDrawRectangle(0, 0, ofGetWidth(), ofGetHeight());

this->shader.end();

}

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

bool ofApp::calculate_angle(glm::vec2 location_1, float radius_1, glm::vec2 location_2, float radius_2, double& theta, double& a) {

auto distance = glm::distance(location_1, location_2);

if (distance > radius_1 + radius_2 || distance < radius_1 - radius_2) { return false; }

theta = atan2(location_2.y - location_1.y, location_2.x - location_1.x);

auto cos_a = (pow(distance, 2) + pow(radius_1, 2) - pow(radius_2, 2)) / (2 * distance * radius_1);

a = acos(cos_a);

return true;

}

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

int main() {

ofGLWindowSettings settings;

settings.setGLVersion(3, 2);

settings.setSize(720, 720);

ofCreateWindow(settings);

ofRunApp(new ofApp());

}

#version 150

uniform mat4 modelViewProjectionMatrix;
in vec4 position;

void main(){
	gl_Position = modelViewProjectionMatrix * position;
}

#version 150

uniform mat4 modelViewProjectionMatrix;

in vec4 position;

void main(){

gl_Position = modelViewProjectionMatrix * position;

}

#version 150

const int number_of_targets = 30;

uniform float time;
uniform vec2 resolution;
uniform vec2 targets[number_of_targets];
uniform vec3 colors[number_of_targets];

out vec4 outputColor;

void main() {

  vec2 p = (gl_FragCoord.xy * 2.0 - resolution) / min(resolution.x, resolution.y);
  vec3 color = vec3(0.0);
  for(int i = 0; i < number_of_targets; i++){

    vec2 t = vec2(targets[i].x, -targets[i].y) / min(resolution.x, resolution.y) * 2.0;
    t.xy += vec2(-resolution.x, resolution.y) / min(resolution.x, resolution.y);

    float v = 0.02 / length(p - t);
	float r = v * colors[i].x;
	float g = v * colors[i].y;
	float b = v * colors[i].z;
    vec3 c = vec3(smoothstep(0.05, 1.0, r), smoothstep(0.05, 1.0, g), smoothstep(0.05, 1.0, b));
    color += c;
  }

  outputColor = vec4(color, 1.0);
}

#version 150

const int number_of_targets = 30;

uniform float time;

uniform vec2 resolution;

uniform vec2 targets[number_of_targets];

uniform vec3 colors[number_of_targets];

out vec4 outputColor;

void main() {

vec2 p = (gl_FragCoord.xy * 2.0 - resolution) / min(resolution.x, resolution.y);

vec3 color = vec3(0.0);

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

vec2 t = vec2(targets[i].x, -targets[i].y) / min(resolution.x, resolution.y) * 2.0;

t.xy += vec2(-resolution.x, resolution.y) / min(resolution.x, resolution.y);

float v = 0.02 / length(p - t);

float r = v * colors[i].x;

float g = v * colors[i].y;

float b = v * colors[i].z;

vec3 c = vec3(smoothstep(0.05, 1.0, r), smoothstep(0.05, 1.0, g), smoothstep(0.05, 1.0, b));

color += c;

}

outputColor = vec4(color, 1.0);

}

[ Link ]
https://github.com/junkiyoshi/Insta20210205

2021年1月31日

Random walking orb. Draw by openFrameworks

[ Video ]

[ About ]
Random walking orb.

[ 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) {};

	vector<glm::vec3> base_color_list;

	int number_of_targets;
	vector<glm::vec2> target_list;
	vector<glm::vec3> target_color_list;
	
	int frame_span;
	float size;
	vector<glm::vec2> location_list;

	vector<int> current_index_list;
	vector<int> next_index_list;
	vector<glm::vec3> color_list;

	ofShader shader;
};

#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) {};

vector<glm::vec3> base_color_list;

int number_of_targets;

vector<glm::vec2> target_list;

vector<glm::vec3> target_color_list;

int frame_span;

float size;

vector<glm::vec2> location_list;

vector<int> current_index_list;

vector<int> next_index_list;

vector<glm::vec3> color_list;

ofShader shader;

};

#include "ofApp.h"	

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

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

	ofBackground(0);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
	ofSetCircleResolution(72);
	ofSetLineWidth(5);

	this->base_color_list.push_back(glm::vec3(0.4, 0.25, 0.25));
	this->base_color_list.push_back(glm::vec3(0.25, 0.4, 0.25));
	this->base_color_list.push_back(glm::vec3(0.25, 0.25, 0.4));

	this->number_of_targets = 120;
	for (int i = 0; i < this->number_of_targets; i++) {

		this->target_list.push_back(glm::vec2());
		this->target_color_list.push_back(glm::vec3(1, 1, 1));
	}

	this->frame_span = 60;
	this->size = 15;
	while (this->location_list.size() < 110) {

		auto location = glm::vec2(ofRandom(80, ofGetWidth() - 80), ofRandom(80, ofGetHeight() - 80));
		bool flag = true;
		for (int i = 0; i < this->location_list.size(); i++) {

			if (glm::distance(location, this->location_list[i]) < this->size * 3) {

				flag = false;
				break;
			}
		}

		if (flag) {

			this->location_list.push_back(location);
		}

		cout << this->location_list.size() << endl;
	}

	for (int i = 0; i < this->number_of_targets; i++) {

		this->current_index_list.push_back(0);
		this->next_index_list.push_back(ofRandom(this->location_list.size()));
		this->color_list.push_back(this->base_color_list[ofRandom(this->base_color_list.size())]);
	}

	this->shader.load("shader/shader.vert", "shader/shader.frag");
}

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

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

		if (ofGetFrameNum() % (this->frame_span * 2) == 0) {

			int next_index = this->next_index_list[i];
			int current_index = next_index;

			vector<int> near_indexes;
			for (int location_index = 0; location_index < this->location_list.size(); location_index++) {

				if (current_index == location_index) { continue; }
				if (glm::distance(this->location_list[current_index], this->location_list[location_index]) < this->size * 5) {

					near_indexes.push_back(location_index);
				}
			}

			if (near_indexes.size() > 0) {

				next_index = near_indexes[ofRandom(near_indexes.size())];
			}

			this->current_index_list[i] = current_index;
			this->next_index_list[i] = next_index;
		}
	}

	for (int i = 0; i < this->number_of_targets; i++) {

		if (ofGetFrameNum() % (this->frame_span * 2) < this->frame_span) {

			this->target_list[i] = this->location_list[this->current_index_list[i]];
			this->target_color_list[i] = this->color_list[i];
		}
		else {

			this->target_list[i] = this->location_list[this->next_index_list[i]];
			this->target_color_list[i] = this->color_list[i];
		}
	}
}

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

	int frame_param = ofGetFrameNum() % this->frame_span;

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

		ofSetColor(ofMap(this->target_color_list[i].x, 0.25, 0.4, 0, 255), ofMap(this->target_color_list[i].y, 0.25, 0.4, 0, 255), ofMap(this->target_color_list[i].z, 0.25, 0.4, 0, 255));

		int current_index = this->current_index_list[i];
		int next_index = this->next_index_list[i];

		auto angle_current = std::atan2(this->location_list[next_index].y - this->location_list[current_index].y, this->location_list[next_index].x - this->location_list[current_index].x);
		auto satellite_point_current = this->location_list[current_index] + glm::vec2(this->size * cos(angle_current), this->size * sin(angle_current));
		auto angle_next = std::atan2(this->location_list[current_index].y - this->location_list[next_index].y, this->location_list[current_index].x - this->location_list[next_index].x);
		auto satellite_point_next = this->location_list[next_index] + glm::vec2(this->size * cos(angle_next), this->size * sin(angle_next));

		if (ofGetFrameNum() % (this->frame_span * 2) < this->frame_span) {

			auto distance = glm::distance(satellite_point_next, satellite_point_current);
			distance = ofMap(frame_param, 0, this->frame_span, 0, distance);
			auto direction = satellite_point_next - satellite_point_current;
			ofDrawLine(satellite_point_current, satellite_point_current + glm::normalize(direction) * distance);
		}
		else {

			auto distance = glm::distance(satellite_point_next, satellite_point_current);
			distance = ofMap(frame_param, 0, this->frame_span, distance, 0);
			auto direction = satellite_point_next - satellite_point_current;
			ofDrawLine(satellite_point_next, satellite_point_next - glm::normalize(direction) * distance);
		}
	}

	ofSetColor(255);
	ofNoFill();
	for (int location_index = 0; location_index < this->location_list.size(); location_index++) {
		
		ofDrawCircle(this->location_list[location_index], this->size);
	}

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

		if (ofGetFrameNum() % (this->frame_span * 2) < this->frame_span) {

			float p = ofGetFrameNum() % this->frame_span < this->frame_span * 0.5 ? 1 : ofMap(ofGetFrameNum() % this->frame_span, this->frame_span * 0.5, this->frame_span, 1, 0);
			this->target_color_list[i] = this->target_color_list[i] * p;
		}
		else {

			this->target_color_list[i] = this->target_color_list[i] * ofMap(ofGetFrameNum() % this->frame_span, 0, this->frame_span, 0, 1);
		}
	}

	ofFill();
	this->shader.begin();
	this->shader.setUniform1f("time", ofGetElapsedTimef());
	this->shader.setUniform2f("resolution", ofGetWidth(), ofGetHeight());
	this->shader.setUniform2fv("targets", &this->target_list[0].x, this->number_of_targets);
	this->shader.setUniform3fv("colors", &this->target_color_list[0].x, this->number_of_targets);

	ofDrawRectangle(0, 0, ofGetWidth(), ofGetHeight());

	this->shader.end();
}

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

	ofGLWindowSettings settings;
	settings.setGLVersion(3, 2);
	settings.setSize(720, 720);
	ofCreateWindow(settings);
	ofRunApp(new ofApp());
}

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

ofSetCircleResolution(72);

ofSetLineWidth(5);

this->base_color_list.push_back(glm::vec3(0.4, 0.25, 0.25));

this->base_color_list.push_back(glm::vec3(0.25, 0.4, 0.25));

this->base_color_list.push_back(glm::vec3(0.25, 0.25, 0.4));

this->number_of_targets = 120;

for (int i = 0; i < this->number_of_targets; i++) {

this->target_list.push_back(glm::vec2());

this->target_color_list.push_back(glm::vec3(1, 1, 1));

}

this->frame_span = 60;

this->size = 15;

while (this->location_list.size() < 110) {

auto location = glm::vec2(ofRandom(80, ofGetWidth() - 80), ofRandom(80, ofGetHeight() - 80));

bool flag = true;

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

if (glm::distance(location, this->location_list[i]) < this->size * 3) {

flag = false;

break;

}

if (flag) {

this->location_list.push_back(location);

}

cout << this->location_list.size() << endl;

}

for (int i = 0; i < this->number_of_targets; i++) {

this->current_index_list.push_back(0);

this->next_index_list.push_back(ofRandom(this->location_list.size()));

this->color_list.push_back(this->base_color_list[ofRandom(this->base_color_list.size())]);

}

this->shader.load("shader/shader.vert", "shader/shader.frag");

}

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

void ofApp::update() {

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

if (ofGetFrameNum() % (this->frame_span * 2) == 0) {

int next_index = this->next_index_list[i];

int current_index = next_index;

vector<int> near_indexes;

for (int location_index = 0; location_index < this->location_list.size(); location_index++) {

if (current_index == location_index) { continue; }

if (glm::distance(this->location_list[current_index], this->location_list[location_index]) < this->size * 5) {

near_indexes.push_back(location_index);

}

if (near_indexes.size() > 0) {

next_index = near_indexes[ofRandom(near_indexes.size())];

}

this->current_index_list[i] = current_index;

this->next_index_list[i] = next_index;

}

for (int i = 0; i < this->number_of_targets; i++) {

if (ofGetFrameNum() % (this->frame_span * 2) < this->frame_span) {

this->target_list[i] = this->location_list[this->current_index_list[i]];

this->target_color_list[i] = this->color_list[i];

}

else {

this->target_list[i] = this->location_list[this->next_index_list[i]];

this->target_color_list[i] = this->color_list[i];

}

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

void ofApp::draw() {

int frame_param = ofGetFrameNum() % this->frame_span;

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

ofSetColor(ofMap(this->target_color_list[i].x, 0.25, 0.4, 0, 255), ofMap(this->target_color_list[i].y, 0.25, 0.4, 0, 255), ofMap(this->target_color_list[i].z, 0.25, 0.4, 0, 255));

int current_index = this->current_index_list[i];

int next_index = this->next_index_list[i];

auto angle_current = std::atan2(this->location_list[next_index].y - this->location_list[current_index].y, this->location_list[next_index].x - this->location_list[current_index].x);

auto satellite_point_current = this->location_list[current_index] + glm::vec2(this->size * cos(angle_current), this->size * sin(angle_current));

auto angle_next = std::atan2(this->location_list[current_index].y - this->location_list[next_index].y, this->location_list[current_index].x - this->location_list[next_index].x);

auto satellite_point_next = this->location_list[next_index] + glm::vec2(this->size * cos(angle_next), this->size * sin(angle_next));

if (ofGetFrameNum() % (this->frame_span * 2) < this->frame_span) {

auto distance = glm::distance(satellite_point_next, satellite_point_current);

distance = ofMap(frame_param, 0, this->frame_span, 0, distance);

auto direction = satellite_point_next - satellite_point_current;

ofDrawLine(satellite_point_current, satellite_point_current + glm::normalize(direction) * distance);

}

else {

auto distance = glm::distance(satellite_point_next, satellite_point_current);

distance = ofMap(frame_param, 0, this->frame_span, distance, 0);

auto direction = satellite_point_next - satellite_point_current;

ofDrawLine(satellite_point_next, satellite_point_next - glm::normalize(direction) * distance);

}

ofSetColor(255);

ofNoFill();

for (int location_index = 0; location_index < this->location_list.size(); location_index++) {

ofDrawCircle(this->location_list[location_index], this->size);

}

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

if (ofGetFrameNum() % (this->frame_span * 2) < this->frame_span) {

float p = ofGetFrameNum() % this->frame_span < this->frame_span * 0.5 ? 1 : ofMap(ofGetFrameNum() % this->frame_span, this->frame_span * 0.5, this->frame_span, 1, 0);

this->target_color_list[i] = this->target_color_list[i] * p;

}

else {

this->target_color_list[i] = this->target_color_list[i] * ofMap(ofGetFrameNum() % this->frame_span, 0, this->frame_span, 0, 1);

}

ofFill();

this->shader.begin();

this->shader.setUniform1f("time", ofGetElapsedTimef());

this->shader.setUniform2f("resolution", ofGetWidth(), ofGetHeight());

this->shader.setUniform2fv("targets", &this->target_list[0].x, this->number_of_targets);

this->shader.setUniform3fv("colors", &this->target_color_list[0].x, this->number_of_targets);

ofDrawRectangle(0, 0, ofGetWidth(), ofGetHeight());

this->shader.end();

}

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

int main() {

ofGLWindowSettings settings;

settings.setGLVersion(3, 2);

settings.setSize(720, 720);

ofCreateWindow(settings);

ofRunApp(new ofApp());

}

#version 150

uniform mat4 modelViewProjectionMatrix;
in vec4 position;

void main(){
	gl_Position = modelViewProjectionMatrix * position;
}

#version 150

uniform mat4 modelViewProjectionMatrix;

in vec4 position;

void main(){

gl_Position = modelViewProjectionMatrix * position;

}

#version 150

const int number_of_targets = 120;

uniform float time;
uniform vec2 resolution;
uniform vec2 targets[number_of_targets];
uniform vec3 colors[number_of_targets];

out vec4 outputColor;

void main() {

  vec2 p = (gl_FragCoord.xy * 2.0 - resolution) / min(resolution.x, resolution.y);
  vec3 color = vec3(0.0);
  for(int i = 0; i < number_of_targets; i++){

    vec2 t = vec2(targets[i].x, -targets[i].y) / min(resolution.x, resolution.y) * 2.0;
    t.xy += vec2(-resolution.x, resolution.y) / min(resolution.x, resolution.y);

    float v = 0.035 / length(p - t);
	float r = v * colors[i].x;
	float g = v * colors[i].y;
	float b = v * colors[i].z;
    vec3 c = vec3(smoothstep(0.05, 1.0, r), smoothstep(0.05, 1.0, g), smoothstep(0.05, 1.0, b));
    color += c;
  }

  outputColor = vec4(color, 1.0);
}

#version 150

const int number_of_targets = 120;

uniform float time;

uniform vec2 resolution;

uniform vec2 targets[number_of_targets];

uniform vec3 colors[number_of_targets];

out vec4 outputColor;

void main() {

vec2 p = (gl_FragCoord.xy * 2.0 - resolution) / min(resolution.x, resolution.y);

vec3 color = vec3(0.0);

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

vec2 t = vec2(targets[i].x, -targets[i].y) / min(resolution.x, resolution.y) * 2.0;

t.xy += vec2(-resolution.x, resolution.y) / min(resolution.x, resolution.y);

float v = 0.035 / length(p - t);

float r = v * colors[i].x;

float g = v * colors[i].y;

float b = v * colors[i].z;

vec3 c = vec3(smoothstep(0.05, 1.0, r), smoothstep(0.05, 1.0, g), smoothstep(0.05, 1.0, b));

color += c;

}

outputColor = vec4(color, 1.0);

}

[ Link ]
https://github.com/junkiyoshi/Insta20210131

2021年1月14日2021年1月14日

Random walk of Colors. Draw by openFrameworks

[ Video ]

[ About ]
色のランダムウォーク。

Random walk of Colors.

[ 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) {};

	int frame_span;
	int size;
	vector<glm::vec2> location_list;
	vector<ofColor> base_color_list;

	vector<int> current_index_list;
	vector<int> next_index_list;
	vector<ofColor> color_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 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) {};

int frame_span;

int size;

vector<glm::vec2> location_list;

vector<ofColor> base_color_list;

vector<int> current_index_list;

vector<int> next_index_list;

vector<ofColor> color_list;

};

#include "ofApp.h"

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

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

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

	this->frame_span = 30;
	this->size = 15;
	while (this->location_list.size() < 120) {

		auto location = glm::vec2(ofRandom(80, ofGetWidth() - 80), ofRandom(80, ofGetHeight() - 80));
		bool flag = true;
		for (int i = 0; i < this->location_list.size(); i++) {

			if (glm::distance(location, this->location_list[i]) < this->size * 3) {

				flag = false;
				break;
			}
		}

		if (flag) {

			this->location_list.push_back(location);
		}
	}

	ofColor color;
	vector<int> hex_list = { 0xf44336, 0x9C27B0, 0x3F51B5, 0x03A9F4, 0x009688, 0x8BC34A, 0xFFEB3B, 0xFF9800 };
	for (auto hex : hex_list) {

		color.setHex(hex);
		this->base_color_list.push_back(color);
	}

	for (int i = 0; i < 90; i++) {

		this->current_index_list.push_back(0);
		this->next_index_list.push_back(ofRandom(this->location_list.size()));
		this->color_list.push_back(this->base_color_list[ofRandom(this->base_color_list.size())]);
	}
}

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

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

		if (ofGetFrameNum() % (this->frame_span * 2) == 0) {

			int next_index = this->next_index_list[i];
			int current_index = next_index;

			vector<int> near_indexes;
			for (int location_index = 0; location_index < this->location_list.size(); location_index++) {

				if (current_index == location_index) { continue; }
				if (glm::distance(this->location_list[current_index], this->location_list[location_index]) < this->size * 5) {

					near_indexes.push_back(location_index);
				}
			}

			if (near_indexes.size() > 0) {

				next_index = near_indexes[ofRandom(near_indexes.size())];
			}

			this->current_index_list[i] = current_index;
			this->next_index_list[i] = next_index;
		}
	}
}

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

	int frame_param = ofGetFrameNum() % this->frame_span;

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

		ofSetColor(this->color_list[i]);

		int current_index = this->current_index_list[i];
		int next_index = this->next_index_list[i];

		auto angle_current = std::atan2(this->location_list[next_index].y - this->location_list[current_index].y, this->location_list[next_index].x - this->location_list[current_index].x);
		auto satellite_point_current = this->location_list[current_index] + glm::vec2(this->size * cos(angle_current), this->size * sin(angle_current));
		auto angle_next = std::atan2(this->location_list[current_index].y - this->location_list[next_index].y, this->location_list[current_index].x - this->location_list[next_index].x);
		auto satellite_point_next = this->location_list[next_index] + glm::vec2(this->size * cos(angle_next), this->size * sin(angle_next));

		if (ofGetFrameNum() % (this->frame_span * 2) < this->frame_span) {

			ofSetLineWidth(3);
			auto distance = glm::distance(satellite_point_next, satellite_point_current);
			distance = ofMap(frame_param, 0, this->frame_span, 0, distance);
			auto direction = satellite_point_next - satellite_point_current;
			ofDrawLine(satellite_point_current, satellite_point_current + glm::normalize(direction) * distance);

			ofSetLineWidth(1.5);
			for (int location_index = 0; location_index < this->location_list.size(); location_index++) {

				ofNoFill();
				ofSetColor(255);
				ofDrawCircle(this->location_list[location_index], this->size);

				if (current_index == location_index) {

					int deg_param = ofMap(frame_param, 0, this->frame_span, 180, 0);
					float start_deg = angle_current * RAD_TO_DEG;

					ofFill();
					ofSetColor(this->color_list[i]);
					ofBeginShape();
					for (int deg = start_deg; deg <= start_deg + deg_param; deg++) {

						ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));
					}
					for (int deg = start_deg - deg_param; deg <= start_deg; deg++) {

						ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));
					}

					ofEndShape();
				}

				if (next_index == location_index) {

					int deg_param = ofMap(frame_param, 0, this->frame_span, 0, 90);
					float start_deg = angle_next * RAD_TO_DEG;

					ofFill();
					ofSetColor(this->color_list[i]);
					ofBeginShape();
					for (int deg = start_deg; deg <= start_deg + deg_param; deg++) {

						ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));
					}
					for (int deg = start_deg - deg_param; deg <= start_deg; deg++) {

						ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));
					}

					ofEndShape();
				}
			}
		}
		else {

			ofSetLineWidth(3);
			auto distance = glm::distance(satellite_point_next, satellite_point_current);
			distance = ofMap(frame_param, 0, this->frame_span, distance, 0);
			auto direction = satellite_point_next - satellite_point_current;
			ofDrawLine(satellite_point_next, satellite_point_next - glm::normalize(direction) * distance);

			ofSetLineWidth(1.5);
			for (int location_index = 0; location_index < this->location_list.size(); location_index++) {

				ofSetColor(255);
				ofNoFill();
				ofDrawCircle(this->location_list[location_index], this->size);

				if (next_index == location_index) {

					int deg_param = ofMap(frame_param, 0, this->frame_span, 90, 180);
					float start_deg = angle_next * RAD_TO_DEG;

					ofFill();
					ofSetColor(this->color_list[i]);
					ofBeginShape();
					for (int deg = start_deg; deg <= start_deg + deg_param; deg++) {

						ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));
					}
					for (int deg = start_deg - deg_param; deg <= start_deg; deg++) {

						ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));
					}

					ofEndShape();
				}
			}
		}
	}
}

//--------------------------------------------------------------
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(0);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

this->frame_span = 30;

this->size = 15;

while (this->location_list.size() < 120) {

auto location = glm::vec2(ofRandom(80, ofGetWidth() - 80), ofRandom(80, ofGetHeight() - 80));

bool flag = true;

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

if (glm::distance(location, this->location_list[i]) < this->size * 3) {

flag = false;

break;

}

if (flag) {

this->location_list.push_back(location);

}

ofColor color;

vector<int> hex_list = { 0xf44336, 0x9C27B0, 0x3F51B5, 0x03A9F4, 0x009688, 0x8BC34A, 0xFFEB3B, 0xFF9800 };

for (auto hex : hex_list) {

color.setHex(hex);

this->base_color_list.push_back(color);

}

for (int i = 0; i < 90; i++) {

this->current_index_list.push_back(0);

this->next_index_list.push_back(ofRandom(this->location_list.size()));

this->color_list.push_back(this->base_color_list[ofRandom(this->base_color_list.size())]);

}

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

void ofApp::update() {

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

if (ofGetFrameNum() % (this->frame_span * 2) == 0) {

int next_index = this->next_index_list[i];

int current_index = next_index;

vector<int> near_indexes;

for (int location_index = 0; location_index < this->location_list.size(); location_index++) {

if (current_index == location_index) { continue; }

if (glm::distance(this->location_list[current_index], this->location_list[location_index]) < this->size * 5) {

near_indexes.push_back(location_index);

}

if (near_indexes.size() > 0) {

next_index = near_indexes[ofRandom(near_indexes.size())];

}

this->current_index_list[i] = current_index;

this->next_index_list[i] = next_index;

}

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

void ofApp::draw() {

int frame_param = ofGetFrameNum() % this->frame_span;

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

ofSetColor(this->color_list[i]);

int current_index = this->current_index_list[i];

int next_index = this->next_index_list[i];

auto angle_current = std::atan2(this->location_list[next_index].y - this->location_list[current_index].y, this->location_list[next_index].x - this->location_list[current_index].x);

auto satellite_point_current = this->location_list[current_index] + glm::vec2(this->size * cos(angle_current), this->size * sin(angle_current));

auto angle_next = std::atan2(this->location_list[current_index].y - this->location_list[next_index].y, this->location_list[current_index].x - this->location_list[next_index].x);

auto satellite_point_next = this->location_list[next_index] + glm::vec2(this->size * cos(angle_next), this->size * sin(angle_next));

if (ofGetFrameNum() % (this->frame_span * 2) < this->frame_span) {

ofSetLineWidth(3);

auto distance = glm::distance(satellite_point_next, satellite_point_current);

distance = ofMap(frame_param, 0, this->frame_span, 0, distance);

auto direction = satellite_point_next - satellite_point_current;

ofDrawLine(satellite_point_current, satellite_point_current + glm::normalize(direction) * distance);

ofSetLineWidth(1.5);

for (int location_index = 0; location_index < this->location_list.size(); location_index++) {

ofNoFill();

ofSetColor(255);

ofDrawCircle(this->location_list[location_index], this->size);

if (current_index == location_index) {

int deg_param = ofMap(frame_param, 0, this->frame_span, 180, 0);

float start_deg = angle_current * RAD_TO_DEG;

ofFill();

ofSetColor(this->color_list[i]);

ofBeginShape();

for (int deg = start_deg; deg <= start_deg + deg_param; deg++) {

ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));

}

for (int deg = start_deg - deg_param; deg <= start_deg; deg++) {

ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));

}

ofEndShape();

}

if (next_index == location_index) {

int deg_param = ofMap(frame_param, 0, this->frame_span, 0, 90);

float start_deg = angle_next * RAD_TO_DEG;

ofFill();

ofSetColor(this->color_list[i]);

ofBeginShape();

for (int deg = start_deg; deg <= start_deg + deg_param; deg++) {

ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));

}

for (int deg = start_deg - deg_param; deg <= start_deg; deg++) {

ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));

}

ofEndShape();

}

else {

ofSetLineWidth(3);

auto distance = glm::distance(satellite_point_next, satellite_point_current);

distance = ofMap(frame_param, 0, this->frame_span, distance, 0);

auto direction = satellite_point_next - satellite_point_current;

ofDrawLine(satellite_point_next, satellite_point_next - glm::normalize(direction) * distance);

ofSetLineWidth(1.5);

for (int location_index = 0; location_index < this->location_list.size(); location_index++) {

ofSetColor(255);

ofNoFill();

ofDrawCircle(this->location_list[location_index], this->size);

if (next_index == location_index) {

int deg_param = ofMap(frame_param, 0, this->frame_span, 90, 180);

float start_deg = angle_next * RAD_TO_DEG;

ofFill();

ofSetColor(this->color_list[i]);

ofBeginShape();

for (int deg = start_deg; deg <= start_deg + deg_param; deg++) {

ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));

}

for (int deg = start_deg - deg_param; deg <= start_deg; deg++) {

ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));

}

ofEndShape();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210114

2025年5月
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