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カラフルを降らす。
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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; vector<glm::vec2> location_list; vector<float> radius_list; vector<float> speed_list; vector<float> max_radius_list; vector<ofColor> color_list; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(25); ofSetWindowTitle("openframeworks"); ofBackground(39); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); ofSetCircleResolution(72); } //-------------------------------------------------------------- void ofApp::update() { for (int i = this->location_list.size() - 1; i >= 0; i--) { if (this->radius_list[i] > 0) { this->radius_list[i] += this->speed_list[i] * 3; } else { this->radius_list[i] += this->speed_list[i] * 30; } if (this->radius_list[i] > this->max_radius_list[i]) { this->location_list.erase(this->location_list.begin() + i); this->radius_list.erase(this->radius_list.begin() + i); this->speed_list.erase(this->speed_list.begin() + i); this->max_radius_list.erase(this->max_radius_list.begin() + i); this->color_list.erase(this->color_list.begin() + i); } } ofColor color; for (int i = 0; i < 5; i++) { auto noise_location = glm::vec2(ofRandom(-400, 400), ofRandom(-400, 400)); auto location = noise_location + glm::vec2(ofRandom(-30, 30), ofRandom(-30, 30)); this->location_list.push_back(location); this->radius_list.push_back(ofRandom(-1200, -600)); this->speed_list.push_back(ofRandom(0.3, 0.5)); this->max_radius_list.push_back(ofRandom(15, 60)); color.setHsb(ofRandom(255), 150, 255); this->color_list.push_back(color); } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); for (int i = 0; i < this->location_list.size(); i++) { if (this->radius_list[i] > 0) { auto alpha = this->radius_list[i] < this->max_radius_list[i] * 0.6 ? 255 : ofMap(this->radius_list[i], this->max_radius_list[i] * 0.6, this->max_radius_list[i], 255, 0); ofSetColor(this->color_list[i], alpha); ofNoFill(); ofDrawCircle(this->location_list[i], this->radius_list[i]); ofFill(); ofSetColor(this->color_list[i], alpha * 0.5); ofDrawCircle(this->location_list[i], this->radius_list[i]); if (this->radius_list[i] < 10) { ofDrawLine(glm::vec3(this->location_list[i], 0), glm::vec3(this->location_list[i], this->radius_list[i] * 6 - 60)); } } else { auto alpha = ofMap(this->radius_list[i], -1200, 0, 64, 255); ofSetColor(this->color_list[i], alpha); ofNoFill(); ofDrawLine(glm::vec3(this->location_list[i], this->radius_list[i]), glm::vec3(this->location_list[i], this->radius_list[i] - 60)); } } this->cam.end(); /* int start = 500; 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()); } |