Pitfall. – プログラミング de 落描き

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[ About ]
落とし穴。

[ 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 setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height, ofColor face_color, ofColor frame_color);
	glm::vec2 make_point(int len, int param);

	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) {};

void setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height, ofColor face_color, ofColor frame_color);

glm::vec2 make_point(int len, int param);

ofEasyCam cam;

ofMesh face, frame;

};

#include "ofApp.h"

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

	ofSetFrameRate(25);
	ofSetWindowTitle("openFrameworks");

	ofBackground(39);
	ofSetLineWidth(1.5);
	ofEnableDepthTest();

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

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

	ofSeedRandom(39);

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

	for (int z = -3000; z <= 0; z += 15) {

		auto alpha = ofMap(z, 0, -1500, 255, 16);
		auto face_color = ofColor(0);
		auto frame_color = ofColor(239, 39, 39);

		this->setRingToMesh(this->face, this->frame, glm::vec3(0, 0, z), 300, 100, 15, face_color, frame_color);
	}
}

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

	this->cam.begin();

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

	this->cam.end();

	/*
	// ffmpeg -i img_%04d.jpg aaa.mp4
	int start = 500;
	if (ofGetFrameNum() > start) {

		std::ostringstream os;
		os << std::setw(4) << std::setfill('0') << ofGetFrameNum() - start;
		ofImage image;
		image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());
		image.saveImage("image/cap/img_" + os.str() + ".jpg");
		if (ofGetFrameNum() - start >= 25 * 20) {

			std::exit(1);
		}
	}
	*/
}

//--------------------------------------------------------------
void ofApp::setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height, ofColor face_color, ofColor frame_color) {

	int index = face_target.getNumVertices();

	for (int param = 0; param < 100; param++) {

		float deg = param * 3.6 - 135;
		float deg_span = 3.6;

		auto noise_location = location + glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0);
		auto next_noise_location = location + glm::vec3(radius * cos((deg + deg_span) * DEG_TO_RAD), radius * sin((deg + deg_span) * DEG_TO_RAD), 0);

		int inner_radius = radius - width * ofMap(ofNoise(glm::vec4(noise_location.x * 0.008, noise_location.y * 0.008, noise_location.z * 0.003, radius * 0.003 + ofGetFrameNum() * 0.015)), 0, 1, 0, 2);
		int next_inner_radius = radius - width * ofMap(ofNoise(glm::vec4(next_noise_location.x * 0.008, next_noise_location.y * 0.008, next_noise_location.z * 0.003, radius * 0.003 + ofGetFrameNum() * 0.015)), 0, 1, 0, 2);

		auto face_index = face_target.getNumVertices();

		vector<glm::vec3> vertices;
		vertices.push_back(glm::vec3(inner_radius * cos(deg * DEG_TO_RAD), inner_radius * sin(deg * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3(next_inner_radius * cos((deg + deg_span) * DEG_TO_RAD), next_inner_radius * sin((deg + deg_span) * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3(next_inner_radius * cos((deg + deg_span) * DEG_TO_RAD), next_inner_radius * sin((deg + deg_span) * DEG_TO_RAD), height * 0.5));
		vertices.push_back(glm::vec3(inner_radius * cos(deg * DEG_TO_RAD), inner_radius * sin(deg * DEG_TO_RAD), height * 0.5));

		vertices.push_back(glm::vec3(this->make_point(radius * 2, param), height * -0.5));
		vertices.push_back(glm::vec3(this->make_point(radius * 2, param + 1), height * -0.5));
		vertices.push_back(glm::vec3(this->make_point(radius * 2, param + 1), height * 0.5));
		vertices.push_back(glm::vec3(this->make_point(radius * 2, param), height * 0.5));

		for (auto& vertex : vertices) {

			vertex += location;
		}

		face_target.addVertices(vertices);

		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2);
		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 3);

		face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 6);
		face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 7);

		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5);
		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 1);

		face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 7); face_target.addIndex(face_index + 6);
		face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 2);

		auto frame_index = frame_target.getNumVertices();

		frame_target.addVertices(vertices);

		frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 1);
		frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 3);
		frame_target.addIndex(frame_index + 4); frame_target.addIndex(frame_index + 5);
		frame_target.addIndex(frame_index + 6); frame_target.addIndex(frame_index + 7);

		for (int i = 0; i < 8; i++) {

			this->face.addColor(face_color);
			this->frame.addColor(frame_color);
		}
	}
}

//--------------------------------------------------------------
glm::vec2 ofApp::make_point(int len, int param) {

	param = param % 100;
	if (param < 25) {

		return glm::vec2(ofMap(param, 0, 25, -len * 0.5, len * 0.5), -len * 0.5);
	}
	else if (param < 50) {

		return glm::vec2(len * 0.5, ofMap(param, 25, 50, -len * 0.5, len * 0.5));
	}
	else if (param < 75) {

		return glm::vec2(ofMap(param, 50, 75, len * 0.5, -len * 0.5), len * 0.5);
	}
	else {

		return glm::vec2(-len * 0.5, ofMap(param, 75, 100, len * 0.5, -len * 0.5));
	}
}


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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openFrameworks");

ofBackground(39);

ofSetLineWidth(1.5);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

for (int z = -3000; z <= 0; z += 15) {

auto alpha = ofMap(z, 0, -1500, 255, 16);

auto face_color = ofColor(0);

auto frame_color = ofColor(239, 39, 39);

this->setRingToMesh(this->face, this->frame, glm::vec3(0, 0, z), 300, 100, 15, face_color, frame_color);

}

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

void ofApp::draw() {

this->cam.begin();

this->face.draw();

this->frame.drawWireframe();

this->cam.end();

// ffmpeg -i img_%04d.jpg aaa.mp4

int start = 500;

if (ofGetFrameNum() > start) {

std::ostringstream os;

os << std::setw(4) << std::setfill('0') << ofGetFrameNum() - start;

ofImage image;

image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());

image.saveImage("image/cap/img_" + os.str() + ".jpg");

if (ofGetFrameNum() - start >= 25 * 20) {

std::exit(1);

}

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

void ofApp::setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height, ofColor face_color, ofColor frame_color) {

int index = face_target.getNumVertices();

for (int param = 0; param < 100; param++) {

float deg = param * 3.6 - 135;

float deg_span = 3.6;

auto noise_location = location + glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0);

auto next_noise_location = location + glm::vec3(radius * cos((deg + deg_span) * DEG_TO_RAD), radius * sin((deg + deg_span) * DEG_TO_RAD), 0);

int inner_radius = radius - width * ofMap(ofNoise(glm::vec4(noise_location.x * 0.008, noise_location.y * 0.008, noise_location.z * 0.003, radius * 0.003 + ofGetFrameNum() * 0.015)), 0, 1, 0, 2);

int next_inner_radius = radius - width * ofMap(ofNoise(glm::vec4(next_noise_location.x * 0.008, next_noise_location.y * 0.008, next_noise_location.z * 0.003, radius * 0.003 + ofGetFrameNum() * 0.015)), 0, 1, 0, 2);

auto face_index = face_target.getNumVertices();

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(inner_radius * cos(deg * DEG_TO_RAD), inner_radius * sin(deg * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3(next_inner_radius * cos((deg + deg_span) * DEG_TO_RAD), next_inner_radius * sin((deg + deg_span) * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3(next_inner_radius * cos((deg + deg_span) * DEG_TO_RAD), next_inner_radius * sin((deg + deg_span) * DEG_TO_RAD), height * 0.5));

vertices.push_back(glm::vec3(inner_radius * cos(deg * DEG_TO_RAD), inner_radius * sin(deg * DEG_TO_RAD), height * 0.5));

vertices.push_back(glm::vec3(this->make_point(radius * 2, param), height * -0.5));

vertices.push_back(glm::vec3(this->make_point(radius * 2, param + 1), height * -0.5));

vertices.push_back(glm::vec3(this->make_point(radius * 2, param + 1), height * 0.5));

vertices.push_back(glm::vec3(this->make_point(radius * 2, param), height * 0.5));

for (auto& vertex : vertices) {

vertex += location;

}

face_target.addVertices(vertices);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 3);

face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 6);

face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 7);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 1);

face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 7); face_target.addIndex(face_index + 6);

face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 2);

auto frame_index = frame_target.getNumVertices();

frame_target.addVertices(vertices);

frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 1);

frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 3);

frame_target.addIndex(frame_index + 4); frame_target.addIndex(frame_index + 5);

frame_target.addIndex(frame_index + 6); frame_target.addIndex(frame_index + 7);

for (int i = 0; i < 8; i++) {

this->face.addColor(face_color);

this->frame.addColor(frame_color);

}

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

glm::vec2 ofApp::make_point(int len, int param) {

param = param % 100;

if (param < 25) {

return glm::vec2(ofMap(param, 0, 25, -len * 0.5, len * 0.5), -len * 0.5);

}

else if (param < 50) {

return glm::vec2(len * 0.5, ofMap(param, 25, 50, -len * 0.5, len * 0.5));

}

else if (param < 75) {

return glm::vec2(ofMap(param, 50, 75, len * 0.5, -len * 0.5), len * 0.5);

}

else {

return glm::vec2(-len * 0.5, ofMap(param, 75, 100, len * 0.5, -len * 0.5));

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/DoodleDeProgramming/tree/26edeadd7a107a74a368d4ccc3a0315ffb8a1d24

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