2019年5月24日 – プログラミング de 落描き

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ペンキのしぶきっぽい絵を描いて、動画をマスク

Paint mask.

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#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 windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	cv::Size cap_size;
	cv::VideoCapture cap;
	cv::Mat frame;
	ofImage image;

	ofFbo fbo;
	ofShader shader;

	glm::vec2 location;
	float percent;
	float noise_seed;
	float noise_scale;
	ofColor color;
};

#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 windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

cv::Size cap_size;

cv::VideoCapture cap;

cv::Mat frame;

ofImage image;

ofFbo fbo;

ofShader shader;

glm::vec2 location;

float percent;

float noise_seed;

float noise_scale;

ofColor color;

};

#include "ofApp.h"

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

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

	ofBackground(239);

	this->cap_size = cv::Size(1280, 720);
	this->cap.open("D:\\video\\image2.mp4");
	this->image.allocate(this->cap_size.width, this->cap_size.height, OF_IMAGE_COLOR);
	this->frame = cv::Mat(cv::Size(this->image.getWidth(), this->image.getHeight()), CV_MAKETYPE(CV_8UC3, this->image.getPixels().getNumChannels()), this->image.getPixels().getData(), 0);

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

	this->location = glm::vec2(ofRandom(ofGetWidth() * 0.2, ofGetWidth() * 0.8), ofRandom(ofGetHeight() * 0.2, ofGetHeight() * 0.8));
	this->percent = 0.0;
	this->noise_seed = ofRandom(10000);
	this->noise_scale = ofRandom(3, 8);
	this->color.setHsb(ofRandom(255), 255, 255);
}

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

	// Read mp4 file.
	cv::Mat src;
	this->cap >> src;
	if (src.empty()) {

		this->cap.set(CV_CAP_PROP_POS_FRAMES, 1);
		return;
	}
	cv::resize(src, this->frame, this->cap_size);
	cv::cvtColor(this->frame, this->frame, CV_BGR2RGB);
	this->image.update();

	// Draw image.
	if (this->percent < 1.0) {

		this->percent += 0.30;
	}
	else {

		this->location = glm::vec2(ofRandom(ofGetWidth()), ofRandom(ofGetHeight()));
		this->percent = 0.f;
		this->noise_seed = ofRandom(10000);
		this->noise_scale = ofRandom(3, 8);
		this->color.setHsb(ofRandom(255), 255, 255);
	}

	this->fbo.begin();
	float base_radius = 80;

	ofPushMatrix();
	ofTranslate(this->location);

	vector<glm::vec2> vertices;
	for (int i = 0; i < 3600; i++) {

		float deg = i * 0.1;
		auto noise_point = glm::vec2(cos(deg * DEG_TO_RAD), sin(deg * DEG_TO_RAD));
		auto noise_value = ofNoise(this->noise_seed, noise_point.x * this->noise_scale, noise_point.y * this->noise_scale);
		float grow_radius = base_radius + pow((1 + noise_value), 7) * this->percent;

		auto point = glm::vec2(grow_radius * cos(deg * DEG_TO_RAD), grow_radius * sin(deg * DEG_TO_RAD));
		vertices.push_back(point);
	}

	ofSetColor(this->color);

	ofBeginShape();
	ofVertices(vertices);
	ofEndShape();

	ofPopMatrix();

	this->fbo.end();
}

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

	this->shader.begin();
	this->shader.setUniform1f("time", ofGetElapsedTimef());
	this->shader.setUniform2f("resolution", ofGetWidth(), ofGetHeight());
	this->shader.setUniformTexture("tex1", this->image, 1);
	this->shader.setUniformTexture("tex2", this->fbo.getTexture(), 2);

	ofFill();
	ofSetColor(255);
	ofDrawRectangle(0, 0, ofGetWidth(), ofGetHeight());
	this->shader.end();
}

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

	ofGLWindowSettings settings;
	settings.setGLVersion(3, 2);
	settings.setSize(1280, 720);
	ofCreateWindow(settings);
	ofRunApp(new ofApp());
}

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

this->cap_size = cv::Size(1280, 720);

this->cap.open("D:\\video\\image2.mp4");

this->image.allocate(this->cap_size.width, this->cap_size.height, OF_IMAGE_COLOR);

this->frame = cv::Mat(cv::Size(this->image.getWidth(), this->image.getHeight()), CV_MAKETYPE(CV_8UC3, this->image.getPixels().getNumChannels()), this->image.getPixels().getData(), 0);

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

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

this->location = glm::vec2(ofRandom(ofGetWidth() * 0.2, ofGetWidth() * 0.8), ofRandom(ofGetHeight() * 0.2, ofGetHeight() * 0.8));

this->percent = 0.0;

this->noise_seed = ofRandom(10000);

this->noise_scale = ofRandom(3, 8);

this->color.setHsb(ofRandom(255), 255, 255);

}

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

void ofApp::update() {

// Read mp4 file.

cv::Mat src;

this->cap >> src;

if (src.empty()) {

this->cap.set(CV_CAP_PROP_POS_FRAMES, 1);

return;

}

cv::resize(src, this->frame, this->cap_size);

cv::cvtColor(this->frame, this->frame, CV_BGR2RGB);

this->image.update();

// Draw image.

if (this->percent < 1.0) {

this->percent += 0.30;

}

else {

this->location = glm::vec2(ofRandom(ofGetWidth()), ofRandom(ofGetHeight()));

this->percent = 0.f;

this->noise_seed = ofRandom(10000);

this->noise_scale = ofRandom(3, 8);

this->color.setHsb(ofRandom(255), 255, 255);

}

this->fbo.begin();

float base_radius = 80;

ofPushMatrix();

ofTranslate(this->location);

vector<glm::vec2> vertices;

for (int i = 0; i < 3600; i++) {

float deg = i * 0.1;

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

auto noise_value = ofNoise(this->noise_seed, noise_point.x * this->noise_scale, noise_point.y * this->noise_scale);

float grow_radius = base_radius + pow((1 + noise_value), 7) * this->percent;

auto point = glm::vec2(grow_radius * cos(deg * DEG_TO_RAD), grow_radius * sin(deg * DEG_TO_RAD));

vertices.push_back(point);

}

ofSetColor(this->color);

ofBeginShape();

ofVertices(vertices);

ofEndShape();

ofPopMatrix();

this->fbo.end();

}

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

void ofApp::draw() {

this->shader.begin();

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

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

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

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

ofFill();

ofSetColor(255);

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

this->shader.end();

}

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

int main() {

ofGLWindowSettings settings;

settings.setGLVersion(3, 2);

settings.setSize(1280, 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;

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));
 
  outputColor = t1 * t2;
}

#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));

outputColor = t1 * t2;

}

[ Link ]
https://github.com/junkiyoshi/Insta20190524

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日: 2019年5月24日

Paint mask. openFrameworks