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円を描く。
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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 radius; vector<glm::vec2> location_list; vector<float> noise_param_list; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(25); ofSetWindowTitle("openFrameworks"); ofBackground(239); ofFill(); ofSetLineWidth(1.5); this->radius = 10; auto x_span = radius * sqrt(3); auto flg = true; for (float y = -100; y < 820; y += radius * 1.5) { for (float x = -100; x < 820; x += x_span) { glm::vec2 location; if (flg) { location = glm::vec2(x, y); } else { location = glm::vec2(x + (x_span / 2), y); } this->location_list.push_back(location); this->noise_param_list.push_back(0); } flg = !flg; } } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000)); auto noise_radius = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.01), 0, 1, 150, 250); auto noise_deg = ofGetFrameNum() * 1.44 * 5; auto noise_location = glm::vec2( ofGetWindowWidth() * 0.5 + noise_radius * cos(noise_deg * DEG_TO_RAD), ofGetWindowHeight() * 0.5 + noise_radius * sin(noise_deg * DEG_TO_RAD)); int index = 0; for (auto& location : this->location_list) { this->noise_param_list[index] -= 0.05; if (this->noise_param_list[index] < 0) { this->noise_param_list[index] = 0; } auto distance = glm::distance(location, noise_location); if (distance < 50) { this->noise_param_list[index] += distance < 25 ? 1 : ofMap(distance, 25, 50, 1, 0); if (this->noise_param_list[index] > 1.5) { this->noise_param_list[index] = 1.5; } } if (this->noise_param_list[index] > 0) { vector<glm::vec2> vertices; for (int deg = 90; deg < 450; deg += 60) { vertices.push_back(location + glm::vec2(this->radius * 0.95 * cos(deg * DEG_TO_RAD), this->radius * 0.95 * sin(deg * DEG_TO_RAD))); } ofSetColor(239, 39, 39, this->noise_param_list[index] > 1 ? 255 : ofMap(this->noise_param_list[index], 0, 1, 0, 255)); ofBeginShape(); ofVertices(vertices); ofEndShape(true); } index++; } /* 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()); } |