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マルチカラー光線
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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) {}; float noise_param; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(25); ofSetWindowTitle("openframeworks"); ofBackground(39); this->noise_param = ofRandom(1000); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); } //-------------------------------------------------------------- void ofApp::update() { if (ofGetFrameNum() % 50 < 25) { this->noise_param += ofMap(ofGetFrameNum() % 50, 0, 25, 0.1, 0.003); } else { this->noise_param += 0.003; } } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWindowSize() * 0.5); ofSeedRandom(39); ofColor color; for (int deg = 0; deg < 360; deg += 10) { ofPushMatrix(); ofRotate(deg); color.setHsb(ofMap(deg, 0, 360, 0, 255), 200, 255, 32); ofSetColor(color); auto base_location = glm::vec2(0, 0); auto target_location = glm::vec2(0, 510); auto distance = target_location - base_location; auto len = glm::length(distance); auto noise_seed = ofRandom(1000); for (int d = 0; d <= len; d++) { auto location = base_location + glm::normalize(distance) * d; auto gap = abs(len * 0.5 - d); auto power = gap < len * 0.35 ? 1 : ofMap(gap, len * 0.35, len * 0.5, 1, 0); auto noise_x = ofMap(ofNoise(noise_seed, location.y * 0.0005 - this->noise_param), 0, 1, -60, 60); location += glm::vec2(noise_x * power, 0); ofDrawCircle(location, 3); } ofPopMatrix(); } ofSeedRandom(39); for (int deg = 0; deg < 360; deg += 10) { ofPushMatrix(); ofRotate(deg); auto base_location = glm::vec2(0, 0); auto target_location = glm::vec2(0, 510); auto distance = target_location - base_location; auto len = glm::length(distance); auto noise_seed = ofRandom(1000); for (int d = 0; d <= len; d++) { auto location = base_location + glm::normalize(distance) * d; auto gap = abs(len * 0.5 - d); auto power = gap < len * 0.35 ? 1 : ofMap(gap, len * 0.35, len * 0.5, 1, 0); auto noise_x = ofMap(ofNoise(noise_seed, location.y * 0.0005 - this->noise_param), 0, 1, -60, 60); location += glm::vec2(noise_x * power, 0); ofSetColor(ofMap(d, 0, len, 255, 0)); ofDrawCircle(location, 0.5); } ofPopMatrix(); } /* int start = 50; if (ofGetFrameNum() > start) { ostringstream os; os << setw(4) << 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); } } */ } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |