Shader – ページ 2 – プログラミング de 落描き

2021年9月13日2021年9月13日

Erase overlapping. Draw by openFrameworks

[ Video ]

[ About ]
ofFboに3枚の画像を描いて、shaderで重なった部分を消す。

Draw three images on the ofFbo and use the shader to remove the overlapping parts.

[ 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) {};

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

	ofShader shader;
	ofFbo fbo1;
	ofFbo fbo2;
	ofFbo fbo3;
};

#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) {};

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

ofShader shader;

ofFbo fbo1;

ofFbo fbo2;

ofFbo fbo3;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(0);

	this->shader.load("shader/shader.vert", "shader/shader.frag");
	this->fbo1.allocate(ofGetWidth(), ofGetHeight());
	this->fbo2.allocate(ofGetWidth(), ofGetHeight());
	this->fbo3.allocate(ofGetWidth(), ofGetHeight());
}

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

	ofSeedRandom(39);

	vector<glm::vec2> location_list;
	vector<glm::vec2> next_list;

	this->fbo1.begin();
	ofClear(0);
	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);
	
	for (int i = 0; i < 3; i++) {

		auto deg = ofGetFrameNum() + i * 120;
		auto location = glm::vec2(230 * cos(deg * DEG_TO_RAD), 230 * sin(deg * DEG_TO_RAD));
		auto next = glm::vec2(230 * cos((deg + 1) * DEG_TO_RAD), 230 * sin((deg + 1) *DEG_TO_RAD));

		location_list.push_back(location);
		next_list.push_back(next);
	}

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

		this->draw_arrow(location_list[i], next_list[i], 120);
	}

	this->fbo1.end();

	this->fbo2.begin();
	ofClear(0);
	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

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

		auto location = location_list[i];
		auto next = next_list[i];

		int range = 120;
		for (int k = 0; k < 10; k++) {

			auto child_noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));
			auto child_location = location + glm::vec2(ofMap(ofNoise(child_noise_seed.x, ofGetFrameNum() * 0.01), 0, 1, -range, range), ofMap(ofNoise(child_noise_seed.y, ofGetFrameNum() * 0.01), 0, 1, -range, range));
			auto child_next = next + glm::vec2(ofMap(ofNoise(child_noise_seed.x, (ofGetFrameNum() + 1) * 0.01), 0, 1, -range, range), ofMap(ofNoise(child_noise_seed.y, (ofGetFrameNum() + 1) * 0.01), 0, 1, -range, range));

			this->draw_arrow(child_location, child_next, 30);

		}
	}

	this->fbo2.end();

	this->fbo3.begin();
	ofClear(0);
	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

	int out = 600;
	int in = 500;

	ofBeginShape();
	ofVertex(out * -0.5, out * -0.5);
	ofVertex(out *  0.5, out * -0.5);
	ofVertex(out *  0.5, out *  0.5);
	ofVertex(out * -0.5, out *  0.5);
	ofNextContour(true);
	ofVertex(in * -0.5, in * -0.5);
	ofVertex(in *  0.5, in * -0.5);
	ofVertex(in *  0.5, in *  0.5);
	ofVertex(in * -0.5, in *  0.5);

	ofEndShape();

	this->fbo3.end();
}

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

	ofFill();
	this->shader.begin();
	this->shader.setUniform1f("time", ofGetElapsedTimef());
	this->shader.setUniform2f("resolution", ofGetWidth(), ofGetHeight());
	this->shader.setUniformTexture("tex1", this->fbo1.getTexture(), 1);
	this->shader.setUniformTexture("tex2", this->fbo2.getTexture(), 2);
	this->shader.setUniformTexture("tex3", this->fbo3.getTexture(), 3);

	ofDrawRectangle(glm::vec2(0, 0), ofGetWidth(), ofGetHeight());

	this->shader.end();
}

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

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

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

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

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

ofSetColor(0);

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

this->fbo1.allocate(ofGetWidth(), ofGetHeight());

this->fbo2.allocate(ofGetWidth(), ofGetHeight());

this->fbo3.allocate(ofGetWidth(), ofGetHeight());

}

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

void ofApp::update() {

ofSeedRandom(39);

vector<glm::vec2> location_list;

vector<glm::vec2> next_list;

this->fbo1.begin();

ofClear(0);

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

for (int i = 0; i < 3; i++) {

auto deg = ofGetFrameNum() + i * 120;

auto location = glm::vec2(230 * cos(deg * DEG_TO_RAD), 230 * sin(deg * DEG_TO_RAD));

auto next = glm::vec2(230 * cos((deg + 1) * DEG_TO_RAD), 230 * sin((deg + 1) *DEG_TO_RAD));

location_list.push_back(location);

next_list.push_back(next);

}

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

this->draw_arrow(location_list[i], next_list[i], 120);

}

this->fbo1.end();

this->fbo2.begin();

ofClear(0);

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

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

auto location = location_list[i];

auto next = next_list[i];

int range = 120;

for (int k = 0; k < 10; k++) {

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

auto child_location = location + glm::vec2(ofMap(ofNoise(child_noise_seed.x, ofGetFrameNum() * 0.01), 0, 1, -range, range), ofMap(ofNoise(child_noise_seed.y, ofGetFrameNum() * 0.01), 0, 1, -range, range));

auto child_next = next + glm::vec2(ofMap(ofNoise(child_noise_seed.x, (ofGetFrameNum() + 1) * 0.01), 0, 1, -range, range), ofMap(ofNoise(child_noise_seed.y, (ofGetFrameNum() + 1) * 0.01), 0, 1, -range, range));

this->draw_arrow(child_location, child_next, 30);

}

this->fbo2.end();

this->fbo3.begin();

ofClear(0);

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

int out = 600;

int in = 500;

ofBeginShape();

ofVertex(out * -0.5, out * -0.5);

ofVertex(out * 0.5, out * -0.5);

ofVertex(out * 0.5, out * 0.5);

ofVertex(out * -0.5, out * 0.5);

ofNextContour(true);

ofVertex(in * -0.5, in * -0.5);

ofVertex(in * 0.5, in * -0.5);

ofVertex(in * 0.5, in * 0.5);

ofVertex(in * -0.5, in * 0.5);

ofEndShape();

this->fbo3.end();

}

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

void ofApp::draw() {

ofFill();

this->shader.begin();

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

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

this->shader.setUniformTexture("tex1", this->fbo1.getTexture(), 1);

this->shader.setUniformTexture("tex2", this->fbo2.getTexture(), 2);

this->shader.setUniformTexture("tex3", this->fbo3.getTexture(), 3);

ofDrawRectangle(glm::vec2(0, 0), ofGetWidth(), ofGetHeight());

this->shader.end();

}

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

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

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

ofFill();

ofBeginShape();

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

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

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

ofEndShape();

ofBeginShape();

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

ofVertex(location + 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);

ofVertex(location + 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);

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

ofEndShape();

}

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

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

uniform float time;
uniform vec2 resolution;
uniform sampler2DRect tex1;
uniform sampler2DRect tex2;
uniform sampler2DRect tex3;

in vec2 texCoordVarying;
out vec4 outputColor;

void main() {

  vec4 t1 = texture(tex1, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));
  vec4 t2 = texture(tex2, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));
  vec4 t3 = texture(tex3, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));
  
  vec4 c;
  if((t1 == t2 && t1 == t3) || (t1 == t2 && t3 == vec4(0.0)) || (t2 == t3 && t1 == vec4(0.0)) || (t1 == t3 && t2 == vec4(0.0))){
  
	c = vec4(vec3(0.937), 1.0);
  }else{

  	c = vec4(vec3(0.153), 1.0);
  }
  
  outputColor = c;
}

#version 150

uniform float time;

uniform vec2 resolution;

uniform sampler2DRect tex1;

uniform sampler2DRect tex2;

uniform sampler2DRect tex3;

in vec2 texCoordVarying;

out vec4 outputColor;

void main() {

vec4 t1 = texture(tex1, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));

vec4 t2 = texture(tex2, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));

vec4 t3 = texture(tex3, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));

vec4 c;

if((t1 == t2 && t1 == t3) || (t1 == t2 && t3 == vec4(0.0)) || (t2 == t3 && t1 == vec4(0.0)) || (t1 == t3 && t2 == vec4(0.0))){

c = vec4(vec3(0.937), 1.0);

}else{

c = vec4(vec3(0.153), 1.0);

}

outputColor = c;

}

[ Link ]
https://github.com/junkiyoshi/Insta20210913

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2021年4月6日2021年4月6日

Reversal 20210406. Draw by openFrameworks

[ Video ]

[ About ]
Reversal.

[ 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) {};

	ofFbo fbo1, fbo2;
	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 windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofFbo fbo1, fbo2;

ofShader shader;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(3);
	ofEnableDepthTest();

	this->fbo1.allocate(ofGetWidth(), ofGetHeight());
	this->fbo2.allocate(ofGetWidth(), ofGetHeight());
	this->shader.load("shader/shader.vert", "shader/shader.frag");
}

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

	this->fbo1.begin();
	ofClear(0);
	
	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);
	ofRotateX(ofGetFrameNum() * 0.37);
	ofRotateY(ofGetFrameNum() * 0.72);

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

	float phi_deg_step = 5;
	float theta_deg_step = 3;
	float radius = 250;

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

		for (float theta_deg = 0; theta_deg < 180; theta_deg += theta_deg_step) {

			auto noise_value = ofNoise(radius * cos(phi_deg * DEG_TO_RAD) * 0.02, radius * sin(phi_deg * DEG_TO_RAD) * 0.02, radius * cos(theta_deg * DEG_TO_RAD) * 0.02, ofGetFrameNum() * 0.005);
			if (noise_value < 0.45) { continue; }

			auto noise_1 = ofNoise(radius * cos(phi_deg * DEG_TO_RAD) * 0.02, radius * sin(phi_deg * DEG_TO_RAD) * 0.02, radius * cos((theta_deg - theta_deg_step) * DEG_TO_RAD) * 0.02, ofGetFrameNum() * 0.005);
			auto noise_2 = ofNoise(radius * cos((phi_deg + phi_deg_step) * DEG_TO_RAD) * 0.02, radius * sin((phi_deg + phi_deg_step) * DEG_TO_RAD) * 0.02, radius * cos(theta_deg * DEG_TO_RAD) * 0.02, ofGetFrameNum() * 0.005);
			auto noise_3 = ofNoise(radius * cos((phi_deg - phi_deg_step) * DEG_TO_RAD) * 0.02, radius * sin((phi_deg - phi_deg_step) * DEG_TO_RAD) * 0.02, radius * cos(theta_deg * DEG_TO_RAD) * 0.02, ofGetFrameNum() * 0.005);
			auto noise_4 = ofNoise(radius * cos(phi_deg * DEG_TO_RAD) * 0.02, radius * sin(phi_deg * DEG_TO_RAD) * 0.02, radius * cos((theta_deg + theta_deg_step) * DEG_TO_RAD) * 0.02, ofGetFrameNum() * 0.005);

			auto index = 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)));

			face.addVertices(vertices);

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

			if (noise_1 < 0.45) {

				frame.addVertex(vertices[0]);
				frame.addVertex(vertices[1]);

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

			if (noise_2 < 0.45) {

				frame.addVertex(vertices[0]);
				frame.addVertex(vertices[2]);

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

			if (noise_3 < 0.45) {

				frame.addVertex(vertices[1]);
				frame.addVertex(vertices[3]);

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

			if (noise_4 < 0.45) {

				frame.addVertex(vertices[2]);
				frame.addVertex(vertices[3]);

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

			}
		}
	}

	ofSetColor(0);
	face.draw();

	ofSetColor(255);
	frame.drawWireframe();
		
	this->fbo1.end();

	this->fbo2.begin();
	ofClear(0);
	ofSetColor(0);

	int span = 180;
	auto flag = true;
	for (int x = 0; x < ofGetWidth(); x += span) {

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

			if (flag) { ofDrawRectangle(x, y, span, span); }
			flag = !flag;
		}
		flag = !flag;
	}

	this->fbo2.end();
}

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

	ofSetColor(255);
	ofFill();
	this->shader.begin();
	this->shader.setUniform1f("time", ofGetElapsedTimef());
	this->shader.setUniform2f("resolution", ofGetWidth(), ofGetHeight());
	this->shader.setUniformTexture("tex1", this->fbo1.getTexture(), 1);
	this->shader.setUniformTexture("tex2", this->fbo2.getTexture(), 2);

	ofDrawRectangle(glm::vec2(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(239);

ofSetLineWidth(3);

ofEnableDepthTest();

this->fbo1.allocate(ofGetWidth(), ofGetHeight());

this->fbo2.allocate(ofGetWidth(), ofGetHeight());

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

}

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

void ofApp::update() {

this->fbo1.begin();

ofClear(0);

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

ofRotateX(ofGetFrameNum() * 0.37);

ofRotateY(ofGetFrameNum() * 0.72);

ofMesh face, frame;

frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

float phi_deg_step = 5;

float theta_deg_step = 3;

float radius = 250;

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

for (float theta_deg = 0; theta_deg < 180; theta_deg += theta_deg_step) {

auto noise_value = ofNoise(radius * cos(phi_deg * DEG_TO_RAD) * 0.02, radius * sin(phi_deg * DEG_TO_RAD) * 0.02, radius * cos(theta_deg * DEG_TO_RAD) * 0.02, ofGetFrameNum() * 0.005);

if (noise_value < 0.45) { continue; }

auto noise_1 = ofNoise(radius * cos(phi_deg * DEG_TO_RAD) * 0.02, radius * sin(phi_deg * DEG_TO_RAD) * 0.02, radius * cos((theta_deg - theta_deg_step) * DEG_TO_RAD) * 0.02, ofGetFrameNum() * 0.005);

auto noise_2 = ofNoise(radius * cos((phi_deg + phi_deg_step) * DEG_TO_RAD) * 0.02, radius * sin((phi_deg + phi_deg_step) * DEG_TO_RAD) * 0.02, radius * cos(theta_deg * DEG_TO_RAD) * 0.02, ofGetFrameNum() * 0.005);

auto noise_3 = ofNoise(radius * cos((phi_deg - phi_deg_step) * DEG_TO_RAD) * 0.02, radius * sin((phi_deg - phi_deg_step) * DEG_TO_RAD) * 0.02, radius * cos(theta_deg * DEG_TO_RAD) * 0.02, ofGetFrameNum() * 0.005);

auto noise_4 = ofNoise(radius * cos(phi_deg * DEG_TO_RAD) * 0.02, radius * sin(phi_deg * DEG_TO_RAD) * 0.02, radius * cos((theta_deg + theta_deg_step) * DEG_TO_RAD) * 0.02, ofGetFrameNum() * 0.005);

auto index = 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)));

face.addVertices(vertices);

face.addIndex(index + 0); face.addIndex(index + 1); face.addIndex(index + 3);

face.addIndex(index + 0); face.addIndex(index + 3); face.addIndex(index + 2);

if (noise_1 < 0.45) {

frame.addVertex(vertices[0]);

frame.addVertex(vertices[1]);

frame.addIndex(frame.getNumVertices() - 1);

frame.addIndex(frame.getNumVertices() - 2);

}

if (noise_2 < 0.45) {

frame.addVertex(vertices[0]);

frame.addVertex(vertices[2]);

frame.addIndex(frame.getNumVertices() - 1);

frame.addIndex(frame.getNumVertices() - 2);

}

if (noise_3 < 0.45) {

frame.addVertex(vertices[1]);

frame.addVertex(vertices[3]);

frame.addIndex(frame.getNumVertices() - 1);

frame.addIndex(frame.getNumVertices() - 2);

}

if (noise_4 < 0.45) {

frame.addVertex(vertices[2]);

frame.addVertex(vertices[3]);

frame.addIndex(frame.getNumVertices() - 1);

frame.addIndex(frame.getNumVertices() - 2);

}

ofSetColor(0);

face.draw();

ofSetColor(255);

frame.drawWireframe();

this->fbo1.end();

this->fbo2.begin();

ofClear(0);

ofSetColor(0);

int span = 180;

auto flag = true;

for (int x = 0; x < ofGetWidth(); x += span) {

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

if (flag) { ofDrawRectangle(x, y, span, span); }

flag = !flag;

}

flag = !flag;

}

this->fbo2.end();

}

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

void ofApp::draw() {

ofSetColor(255);

ofFill();

this->shader.begin();

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

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

this->shader.setUniformTexture("tex1", this->fbo1.getTexture(), 1);

this->shader.setUniformTexture("tex2", this->fbo2.getTexture(), 2);

ofDrawRectangle(glm::vec2(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;
in vec2 texcoord;
out vec2 texCoordVarying;

void main(){

	texCoordVarying = texcoord;
	gl_Position = modelViewProjectionMatrix * position;
}

#version 150

uniform mat4 modelViewProjectionMatrix;

in vec4 position;

in vec2 texcoord;

out vec2 texCoordVarying;

void main(){

texCoordVarying = texcoord;

gl_Position = modelViewProjectionMatrix * position;

}

#version 150

uniform float time;
uniform vec2 resolution;
uniform sampler2DRect tex1;
uniform sampler2DRect tex2;

in vec2 texCoordVarying;
out vec4 outputColor;

void main() {

  vec4 t1 = texture(tex1, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));
  vec4 t2 = texture(tex2, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));
  
  vec4 c;
  if(t2 == vec4(0.0)){
  
    c = t1;
  }else{
  
    if(t1 == vec4(vec3(1.0), 1.0)){
	
		c = vec4(vec3(0.0), 1);
	}else{
	
		if(t1 == vec4(0.0)){
		
		   c = vec4(vec3(0), 1);
		}else{

			c = vec4(vec3(0.937), 1.0);
		}
	}
  }

  outputColor = c;
}

#version 150

uniform float time;

uniform vec2 resolution;

uniform sampler2DRect tex1;

uniform sampler2DRect tex2;

in vec2 texCoordVarying;

out vec4 outputColor;

void main() {

vec4 t1 = texture(tex1, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));

vec4 t2 = texture(tex2, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));

vec4 c;

if(t2 == vec4(0.0)){

c = t1;

}else{

if(t1 == vec4(vec3(1.0), 1.0)){

c = vec4(vec3(0.0), 1);

}else{

if(t1 == vec4(0.0)){

c = vec4(vec3(0), 1);

}else{

c = vec4(vec3(0.937), 1.0);

}

outputColor = c;

}

[ Link ]
https://github.com/junkiyoshi/Insta20210406

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2021年2月18日2021年2月18日

PCD 2021 Outer Space. Draw by openFrameworks

[ Video ]

[ About ]

For PCD Japan 2021, we organize Daily Coding Week from Feb 13th! We made a "prompt list" as themes of the day, and those works tweeted with #PCD2021 by 23:59 (UTC+9) will be automatically included in our 3D online gallery! Use your favorite tool (not only p5/p5js) for submission! pic.twitter.com/WjcOwu1fnP

— PCD Japan (@PCD_Tokyo) February 11, 2021

[ 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;

	int number_of_targets;
	vector<glm::vec2> target_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) {};

ofTrueTypeFont font;

int number_of_targets;

vector<glm::vec2> target_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);
	ofSetColor(255);

	this->font.loadFont("fonts/Kazesawa-Bold.ttf", 100, true, true, true);


	this->number_of_targets = 400;
	for (int i = 0; i < this->number_of_targets; i++) {

		this->target_list.push_back(glm::vec2());
		this->color_list.push_back(glm::vec3(ofRandom(0.2, 0.8), ofRandom(0.2, 0.8), ofRandom(0.2, 0.8)));
	}

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

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

	ofSeedRandom(39);

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

		this->target_list[i] = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0002), 0, 1, -100, 820), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0002), 0, 1, -100, 820));
	}
}

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

	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();

	ofSetColor(239);
	string word = "PCD 2021";
	this->font.drawStringAsShapes(word, 360 + this->font.stringWidth(word) * -0.5, 360 + this->font.stringHeight(word) * 0.5);

}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

ofSetColor(255);

this->font.loadFont("fonts/Kazesawa-Bold.ttf", 100, true, true, true);

this->number_of_targets = 400;

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

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

this->color_list.push_back(glm::vec3(ofRandom(0.2, 0.8), ofRandom(0.2, 0.8), ofRandom(0.2, 0.8)));

}

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

}

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

void ofApp::update() {

ofSeedRandom(39);

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

this->target_list[i] = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0002), 0, 1, -100, 820), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0002), 0, 1, -100, 820));

}

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

void ofApp::draw() {

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();

ofSetColor(239);

string word = "PCD 2021";

this->font.drawStringAsShapes(word, 360 + this->font.stringWidth(word) * -0.5, 360 + this->font.stringHeight(word) * 0.5);

}

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

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 = 400;

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 = 0.012 / 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 = 400;

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 = 0.012 / 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/Insta20210218

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2024年4月
月	火	水	木	金	土	日
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