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六角形を重ねて描写しています。
高さ+Frame番号を引数としたNoiseで座標をズラしているので、ずれが伝播して昇っていくようなっています。
また、全部を同じ色で描写すると、奥行が感じられないので、前後の深さと線のアルファが連動させてそれっぽくしています。
[ Source ]
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#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) {}; ofEasyCam cam; void draw_hexagon(ofPoint center, float radius, float z = 0.f); }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofBackground(39); ofSetWindowTitle("Insta"); ofSetLineWidth(2); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofRotateX(270); ofRotateZ(35); float noise_x_param = ofRandom(1000); float noise_y_param = ofRandom(1000); float noise_threshold_high = 0.65; float noise_threshold_low = 0.35; for (int z = -300; z <= 300; z += 10) { ofPushMatrix(); float noise_x_value = ofNoise(noise_x_param + z * 0.005 - ofGetFrameNum() * 0.05); float noise_y_value = ofNoise(noise_y_param + z * 0.005 - ofGetFrameNum() * 0.05); if (noise_x_value > noise_threshold_high) { ofTranslate(ofMap(noise_x_value, noise_threshold_high, 1.0, 0, 500), 0); } else if (noise_x_value < noise_threshold_low) { ofTranslate(ofMap(noise_x_value, 0.0, noise_threshold_low, -500, 0), 0); } if (noise_y_value > noise_threshold_high) { ofTranslate(0, ofMap(noise_y_value, noise_threshold_high, 1.0, 0, 500)); } else if (noise_y_value < noise_threshold_low) { ofTranslate(0, ofMap(noise_y_value, 0.0, noise_threshold_low, -500, 0)); } this->draw_hexagon(ofPoint(), 300, z); ofPopMatrix(); } this->cam.end(); } //-------------------------------------------------------------- void ofApp::draw_hexagon(ofPoint center, float radius, float z) { for (int deg = 0; deg < 360; deg += 60) { ofPoint start = ofPoint(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), z); ofPoint end = ofPoint(radius * cos((deg + 60) * DEG_TO_RAD), radius * sin((deg + 60) * DEG_TO_RAD), z); ofPoint distance = end - start; float len = distance.length(); distance.normalize(); for (int l = 0; l < len; l++) { ofPoint p1 = start + l * distance; ofPoint p2 = start + (l + 1) * distance; ofSetColor(239, ofMap(p1.y, -radius, radius, 255, 25)); ofDrawLine(p1, p2); } } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |