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Boxの枠を描写してしています。それぞれの枠上の座標でNoise関数を使い、描写する/しないを分けているので、部分的に描写されます。
視点によって微妙に見えてくるものが違ってくるので、ぼーっと眺めていると面白いかと思います。
[ 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_box(ofPoint point, float length); void draw_line(ofPoint p_1, ofPoint p_2); }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofBackground(39); ofSetWindowTitle("Insta"); ofEnableDepthTest(); } //-------------------------------------------------------------- void ofApp::update() { } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofRotateY(ofGetFrameNum() * 0.5); int length = 250; int span = 50; for (int x = -length / 2 + span / 2; x <= length / 2 - span / 2; x += span) { for (int y = -length / 2 + span / 2; y <= length / 2 - span / 2; y += span) { for (int z = -length / 2 + span / 2; z <= length / 2 - span / 2; z += span) { this->draw_box(ofPoint(x, y, z), span); } } } this->cam.end(); } //-------------------------------------------------------------- void ofApp::draw_box(ofPoint point, float length) { for (int x = point.x - length / 2; x < point.x + length / 2; x += 1) { int y_1 = point.y - length / 2; int y_2 = point.y + length / 2; int z_1 = point.z - length / 2; int z_2 = point.z + length / 2; this->draw_line(ofPoint(x, y_1, z_1), ofPoint(x + 1, y_1, z_1)); this->draw_line(ofPoint(x, y_1, z_2), ofPoint(x + 1, y_1, z_2)); this->draw_line(ofPoint(x, y_2, z_1), ofPoint(x + 1, y_2, z_1)); this->draw_line(ofPoint(x, y_2, z_2), ofPoint(x + 1, y_2, z_2)); } for (int y = point.y - length / 2; y < point.y + length / 2; y += 1) { int x_1 = point.x - length / 2; int x_2 = point.x + length / 2; int z_1 = point.z - length / 2; int z_2 = point.z + length / 2; this->draw_line(ofPoint(x_1, y, z_1), ofPoint(x_1, y + 1, z_1)); this->draw_line(ofPoint(x_1, y, z_2), ofPoint(x_1, y + 1, z_2)); this->draw_line(ofPoint(x_2, y, z_1), ofPoint(x_2, y + 1, z_1)); this->draw_line(ofPoint(x_2, y, z_2), ofPoint(x_2, y + 1, z_2)); } for (int z = point.z - length / 2; z < point.z + length / 2; z += 1) { int x_1 = point.x - length / 2; int x_2 = point.x + length / 2; int y_1 = point.y - length / 2; int y_2 = point.y + length / 2; this->draw_line(ofPoint(x_1, y_1, z), ofPoint(x_1, y_1, z + 1)); this->draw_line(ofPoint(x_1, y_2, z), ofPoint(x_1, y_2, z + 1)); this->draw_line(ofPoint(x_2, y_1, z), ofPoint(x_2, y_1, z + 1)); this->draw_line(ofPoint(x_2, y_2, z), ofPoint(x_2, y_2, z + 1)); } } //-------------------------------------------------------------- void ofApp::draw_line(ofPoint p_1, ofPoint p_2) { float noise_value = ofNoise(p_1.x * 0.005, p_1.y * 0.005 + ofGetFrameNum() * 0.025, p_1.z * 0.005); if (noise_value > 0.5) { ofSetColor(239, ofMap(noise_value, 0, 1, 0, 255)); ofDrawLine(p_1, p_2); } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |