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ofSeedRandom()を使って、ofNoise()の1つ目の引数を固定する。
２つ目の引数にofGetFrameNum()を使うことで、１フレームづつの動きを付ける。
Use ofSeedRandom() to fix the first argument ofNoise().
By using ofGetFrameNum() as the second argument, we can add movement one frame at a time.
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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; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(0); ofSetLineWidth(2); ofEnableDepthTest(); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); auto noise_location_param = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000)); auto noise_rotation_param = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000)); auto number_of_log = 5; for (int i = 0; i <= number_of_log; i++) { auto location = glm::vec3( ofMap(ofNoise(noise_location_param.x, ofGetFrameNum() * 0.008 + i * 0.08), 0, 1, -200, 200), ofMap(ofNoise(noise_location_param.y, ofGetFrameNum() * 0.008 + i * 0.08), 0, 1, -200, 200), ofMap(ofNoise(noise_location_param.z, ofGetFrameNum() * 0.008 + i * 0.08), 0, 1, -200, 200) ); auto rotate = glm::vec3( ofMap(ofNoise(noise_rotation_param.x, ofGetFrameNum() * 0.008 + i * 0.08), 0, 1, -180, 180), ofMap(ofNoise(noise_rotation_param.y, ofGetFrameNum() * 0.008 + i * 0.08), 0, 1, -180, 180), ofMap(ofNoise(noise_rotation_param.z, ofGetFrameNum() * 0.008 + i * 0.08), 0, 1, -180, 180) ); ofPushMatrix(); ofTranslate(location); ofRotateZ(rotate.z); ofRotateY(rotate.y); ofRotateX(rotate.x); if (i == number_of_log) { ofSetColor(0); ofFill(); ofDrawBox(glm::vec3(), 50); } ofColor line_color; line_color.setHsb((ofGetFrameNum() + i * 15) % 255, 255, 255); ofSetColor(line_color); ofNoFill(); ofSetLineWidth(ofMap(i, 0, number_of_log, 0.3, 2)); ofDrawBox(glm::vec3(), 50); ofPopMatrix(); } this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |