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色の輪。
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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) {}; vector<ofColor> base_color_list; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(25); ofSetWindowTitle("openFrameworks"); ofBackground(39); ofSetLineWidth(2); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); ofColor color; for (int hue = 0; hue < 256; hue += 32) { color.setHsb(hue, 180, 255); this->base_color_list.push_back(color); } } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5); int color_index = 0; for (int radius = 60; radius < 320; radius += 15) { ofMesh face, line; line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); int start_deg = ofMap(ofNoise(radius * 0.01, ofGetFrameNum() * 0.005), 0, 1, -360, 360); int deg_len = ofMap(ofNoise(radius * 0.01, ofGetFrameNum() * 0.01), 0, 1, -120, 360 + 45); for (int deg = start_deg; deg < start_deg + deg_len; deg++) { face.addVertex(glm::vec3() + glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0)); face.addVertex(glm::vec3() + glm::vec3((radius - 10) * cos(deg * DEG_TO_RAD), (radius - 10) * sin(deg * DEG_TO_RAD), 0)); face.addColor(ofColor(this->base_color_list[color_index], 128)); face.addColor(ofColor(this->base_color_list[color_index], 128)); line.addVertex(glm::vec3() + glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0)); line.addVertex(glm::vec3() + glm::vec3((radius - 10) * cos(deg * DEG_TO_RAD), (radius - 10) * sin(deg * DEG_TO_RAD), 0)); line.addColor(this->base_color_list[color_index]); line.addColor(this->base_color_list[color_index]); if (deg != start_deg) { face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2); face.addIndex(face.getNumVertices() - 4); face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 3); face.addIndex(face.getNumVertices() - 4); line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 3); line.addIndex(line.getNumVertices() - 2); line.addIndex(line.getNumVertices() - 4); } else { line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 2); } } line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 2); face.draw(); line.draw(); color_index = (color_index + 1) % this->base_color_list.size(); } /* 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); } } */ } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |