2020年3月26日 – プログラミング de 落描き

[ Video ]

[ About ]
Noise(x, y, z, z + frameCount)という結果を濃淡として使用。
輪郭のふちはOpenCVで計算。

The result Noise(x, y, z, z + frameCount) is used as a gradient.
The edge of the outline is calculated by OpenCV.

[ Source ]

#pragma once
#include "ofMain.h"
#include "opencv2/opencv.hpp"

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) {};

	ofFbo fbo;
	ofPixels pixels;
	cv::Mat pixels_mat;

	ofMesh fbo_mesh, draw_mesh;
};

#pragma once

#include "ofMain.h"

#include "opencv2/opencv.hpp"

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) {};

ofFbo fbo;

ofPixels pixels;

cv::Mat pixels_mat;

ofMesh fbo_mesh, draw_mesh;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofEnableDepthTest();

	auto fbo_ico_sphere = ofIcoSpherePrimitive(250, 4);
	this->fbo_mesh = fbo_ico_sphere.getMesh();

	auto draw_ico_sphere = ofIcoSpherePrimitive(245, 4);
	this->draw_mesh = draw_ico_sphere.getMesh();

	this->fbo.allocate(ofGetWidth(), ofGetHeight());
	this->fbo.readToPixels(this->pixels);
	this->pixels_mat = cv::Mat(this->pixels.getHeight(), this->pixels.getWidth(), CV_8UC4, this->pixels.getData());
}
//--------------------------------------------------------------
void ofApp::update() {

	this->fbo_mesh.clearColors();
	this->draw_mesh.clearColors();

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

		auto vertex = this->fbo_mesh.getVertices()[i];
		ofColor color = ofColor(ofMap(ofNoise(glm::vec4(vertex * 0.005, vertex.z * 0.03 + ofGetFrameNum() * 0.03)), 0, 1, 39, 239));

		this->fbo_mesh.addColor(color);
		this->draw_mesh.addColor(color);
	}

	this->fbo.begin();
	ofClear(0);

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

	this->fbo_mesh.draw();

	this->fbo.end();
	this->fbo.readToPixels(this->pixels);

	cv::GaussianBlur(this->pixels_mat, this->pixels_mat, cv::Size(19, 19), 29, 29);

}

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

	ofFill();
	ofSetColor(255);
	ofImage draw_image;
	draw_image.setFromPixels(this->pixels);
	draw_image.draw(0, 0);

	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);
	this->draw_mesh.draw();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofEnableDepthTest();

auto fbo_ico_sphere = ofIcoSpherePrimitive(250, 4);

this->fbo_mesh = fbo_ico_sphere.getMesh();

auto draw_ico_sphere = ofIcoSpherePrimitive(245, 4);

this->draw_mesh = draw_ico_sphere.getMesh();

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

this->fbo.readToPixels(this->pixels);

this->pixels_mat = cv::Mat(this->pixels.getHeight(), this->pixels.getWidth(), CV_8UC4, this->pixels.getData());

}

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

void ofApp::update() {

this->fbo_mesh.clearColors();

this->draw_mesh.clearColors();

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

auto vertex = this->fbo_mesh.getVertices()[i];

ofColor color = ofColor(ofMap(ofNoise(glm::vec4(vertex * 0.005, vertex.z * 0.03 + ofGetFrameNum() * 0.03)), 0, 1, 39, 239));

this->fbo_mesh.addColor(color);

this->draw_mesh.addColor(color);

}

this->fbo.begin();

ofClear(0);

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

this->fbo_mesh.draw();

this->fbo.end();

this->fbo.readToPixels(this->pixels);

cv::GaussianBlur(this->pixels_mat, this->pixels_mat, cv::Size(19, 19), 29, 29);

}

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

void ofApp::draw() {

ofFill();

ofSetColor(255);

ofImage draw_image;

draw_image.setFromPixels(this->pixels);

draw_image.draw(0, 0);

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

this->draw_mesh.draw();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200326

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日: 2020年3月26日

Wavy sphere. openFrameworks