[ Video ]
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上から矢印、下から矢印。
Top arrow and bottom arrow.
[ Source ]
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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 target, float size, ofColor color); }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(30); ofSetWindowTitle("openFrameworks"); ofBackground(255); ofSetLineWidth(2); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { // 配色デザイン ビビッドブルー P144 vector<ofColor> color_palette; color_palette.push_back(ofColor(18, 85, 163)); color_palette.push_back(ofColor(0, 165, 231)); color_palette.push_back(ofColor(93, 177, 186)); color_palette.push_back(ofColor(44, 121, 191)); color_palette.push_back(ofColor(136, 185, 79)); color_palette.push_back(ofColor(246, 221, 80)); color_palette.push_back(ofColor(200, 59, 57)); //color_palette.push_back(ofColor(255, 255, 255)); int color_index = 0; for (int x = 0; x <= ofGetWidth(); x += 40) { color_index = (color_index + 1) % color_palette.size(); ofColor color = color_palette[color_index]; if (x % 60 == 0) { auto y = ofMap(ofNoise(x * 0.005 + ofGetFrameNum() * 0.025), 0, 1, 0, ofGetHeight()) - 30; this->draw_arrow(glm::vec2(x, 0), glm::vec2(x, y), 35, color); y = ofMap(ofNoise(x * 0.005 + ofGetFrameNum() * 0.025), 1, 0, 0, ofGetHeight()) + 30; this->draw_arrow(glm::vec2(x, ofGetHeight()), glm::vec2(x, y), 35, color); } else { auto y = ofMap(ofNoise(x * 0.005 + ofGetFrameNum() * 0.025), 1, 0, 0, ofGetHeight()) + 30; this->draw_arrow(glm::vec2(x, ofGetHeight()), glm::vec2(x, y), 35, color); y = ofMap(ofNoise(x * 0.005 + ofGetFrameNum() * 0.025), 0, 1, 0, ofGetHeight()) - 30; this->draw_arrow(glm::vec2(x, 0), glm::vec2(x, y), 35, color); } } } //-------------------------------------------------------------- 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 distance = glm::distance(target, location); ofPushMatrix(); ofTranslate(target); ofSetColor(color); ofFill(); ofBeginShape(); ofVertex(glm::vec2(size * cos(angle), size * sin(angle))); ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5))); ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5))); ofEndShape(); ofBeginShape(); ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5); ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle))); ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle))); ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5); ofEndShape(); ofSetColor(255); ofNoFill(); ofBeginShape(); ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5); ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5))); ofVertex(glm::vec2(size * cos(angle), size * sin(angle))); ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5))); ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5); ofEndShape(); ofBeginShape(); ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5); ofVertex(glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle))); ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5 - glm::vec2(distance * cos(angle), distance * sin(angle))); ofVertex(glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.5); ofEndShape(); ofPopMatrix(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |