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10 PRINTを矢印でやってみるアイデア。
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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) {}; void draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor color); }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(25); ofSetWindowTitle("openFrameworks"); ofBackground(39); ofSetLineWidth(2); } //-------------------------------------------------------------- void ofApp::update() { } //-------------------------------------------------------------- void ofApp::draw() { int span = 40; for (int x = span * 0.5; x <= ofGetWindowWidth(); x += span) { for (int y = span * 0.5; y <= ofGetWindowHeight(); y += span) { auto r = ofNoise(x * 0.05, y * 0.05, ofGetFrameNum() * 0.005); if (r < 0.25) { this->draw_arrow(glm::vec2(x - span * 0.5, y - span * 0.5), glm::vec2(x + span * 0.5, y + span * 0.5), 16, ofColor(255)); } else if(r < 0.5) { this->draw_arrow(glm::vec2(x - span * 0.5, y + span * 0.5), glm::vec2(x + span * 0.5, y - span * 0.5), 16, ofColor(255)); } else if (r < 7.5) { this->draw_arrow(glm::vec2(x + span * 0.5, y + span * 0.5), glm::vec2(x - span * 0.5, y - span * 0.5), 16, ofColor(255)); } else { this->draw_arrow(glm::vec2(x + span * 0.5, y - span * 0.5), glm::vec2(x - span * 0.5, y + span * 0.5), 16, ofColor(255)); } } } /* int start = 250; 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 target, float size, ofColor color) { auto angle = std::atan2(target.y - location.y, target.x - location.x); auto translate_location = target - glm::vec2(size * 1.5 * cos(angle), size * 1.5 * sin(angle)); auto distance = glm::distance(translate_location, location); ofPushMatrix(); ofTranslate(translate_location); ofSetColor(color); ofFill(); ofBeginShape(); ofVertex(glm::vec2(size * cos(angle), size * sin(angle))); ofVertex(glm::vec2(size * 0.25 * cos(angle + PI * 0.5), size * 0.25 * sin(angle + PI * 0.5))); ofVertex(glm::vec2(size * 0.25 * cos(angle - PI * 0.5), size * 0.25 * sin(angle - PI * 0.5))); ofEndShape(); ofBeginShape(); ofVertex(glm::vec2(size * 0.25 * cos(angle + PI * 0.5), size * 0.25 * sin(angle + PI * 0.5)) * 0.25); ofVertex(glm::vec2(size * 0.25 * cos(angle + PI * 0.5), size * 0.25 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(distance * cos(angle), distance * sin(angle))); ofVertex(glm::vec2(size * 0.25 * cos(angle - PI * 0.5), size * 0.25 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(distance * cos(angle), distance * sin(angle))); ofVertex(glm::vec2(size * 0.25 * cos(angle - PI * 0.5), size * 0.25 * sin(angle - PI * 0.5)) * 0.25); ofEndShape(); ofPopMatrix(); ofDrawCircle(location, 5); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |