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円または矢印。
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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 mouseEntered(int x, int y) {}; void mouseExited(int x, int y) {}; void windowResized(int w, int h) {}; void dragEvent(ofDragInfo dragInfo) {}; void gotMessage(ofMessage msg) {}; void draw_arrow(glm::vec2 location, glm::vec2 next_location, float size, ofColor color); }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(25); ofSetWindowTitle("openFrameworks"); ofBackground(39); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWindowSize() * 0.5); int span = 30; for (int x = -330; x <= 330; x += span) { for (int y = -330; y <= 330; y += span) { auto noise_value = ofNoise(x * 0.001, y * 0.001, ofGetFrameNum() * 0.02); auto next_noise_value = ofNoise(x * 0.001, y * 0.001, (ofGetFrameNum() + 1) * 0.02); auto noise_param = noise_value < 0.49 ? 0 : noise_value > 0.51 ? 1 : ofMap(noise_value, 0.49, 0.51, 0, 1); auto next_noise_param = next_noise_value < 0.49 ? 0 : next_noise_value > 0.51 ? 1 : ofMap(next_noise_value, 0.49, 0.51, 0, 1); auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000)); auto param_x = ofMap(ofNoise(noise_seed.x, ofGetFrameNum() * 0.05), 0, 1, span * -1.5, span * 1.5) * noise_param; auto param_y = ofMap(ofNoise(noise_seed.y, ofGetFrameNum() * 0.05), 0, 1, span * -1.5, span * 1.5) * noise_param; auto next_param_x = ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + 1) * 0.05), 0, 1, span * -1.5, span * 1.5) * next_noise_param; auto next_param_y = ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + 1) * 0.05), 0, 1, span * -1.5, span * 1.5) * next_noise_param; if (noise_param > 0) { this->draw_arrow(glm::vec2(x + param_x, y + param_y), glm::vec2(x + next_param_x, y + next_param_y), span * 0.25, ofColor(239, 39, 39)); ofDrawLine(glm::vec2(x + param_x, y + param_y), glm::vec2(x + next_param_x, y + next_param_y)); } else { ofFill(); ofSetColor(239); ofDrawCircle(x + param_x, y + param_y, span * 0.15); } } } /* 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); } } */ } //-------------------------------------------------------------- void ofApp::draw_arrow(glm::vec2 location, glm::vec2 next_location, float size, ofColor color) { auto angle = std::atan2(next_location.y - location.y, next_location.x - location.x); ofSetColor(color); ofFill(); ofBeginShape(); ofVertex(glm::vec2(size * 0.8 * cos(angle), size * 0.8 * sin(angle)) + location); ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) + location); ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) + location); ofEndShape(true); ofBeginShape(); ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 + location); ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location); ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location); ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 + location); ofEndShape(true); ofSetColor(color); ofNoFill(); ofBeginShape(); ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 + location); ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) + location); ofVertex(glm::vec2(size * 0.8 * cos(angle), size * 0.8 * sin(angle)) + location); ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) + location); ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 + location); ofEndShape(); ofBeginShape(); ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 + location); ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location); ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5 + location); ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 + location); ofEndShape(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |