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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) {}; glm::vec2 make_point(int radius, int deg); }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(25); ofSetWindowTitle("openFrameworks"); ofBackground(39); ofSetLineWidth(2); } //-------------------------------------------------------------- void ofApp::update() { } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5); ofRotate(45); ofColor color; for (int radius = 50; radius <= 500; radius += 10) { int deg_start = radius * 6.5 + ofGetFrameNum() * 2.16; for (int deg = deg_start; deg < deg_start + 360; deg += 60) { vector<glm::vec2> vertices; for (int tmp_deg = deg; tmp_deg <= deg + 60; tmp_deg += 1) { vertices.push_back(glm::vec2(this->make_point(radius, tmp_deg))); } color.setHsb( ofMap(deg, deg_start, deg_start + 360, 0, 255), 130, ofMap(radius, 50, 320, 0, 255)); ofFill(); ofSetColor(color); ofBeginShape(); ofVertices(vertices); ofEndShape(true); ofNoFill(); ofSetColor(139); ofBeginShape(); ofVertices(vertices); ofEndShape(true); } } /* 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); } } */ } //-------------------------------------------------------------- glm::vec2 ofApp::make_point(int radius, int deg) { deg = deg % 360; int deg_a = (deg / 90) * 90; int deg_b = deg_a + 90; int remainder = deg % 90; int diff = deg - deg_a; auto point_a = glm::vec2(radius * cos(deg_a * DEG_TO_RAD), radius * sin(deg_a * DEG_TO_RAD)); auto point_b = glm::vec2(radius * cos(deg_b * DEG_TO_RAD), radius * sin(deg_b * DEG_TO_RAD)); auto distance = point_b - point_a; return point_a + (distance / 90) * diff; } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |