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色付き半円
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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(30); ofSetWindowTitle("openFrameworks"); ofBackground(0); ofSetLineWidth(2); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); ofColor color; vector<int> hex_list = { 0xf44336, 0x9C27B0, 0x3F51B5, 0x03A9F4, 0x009688, 0x8BC34A, 0xFFEB3B, 0xFF9800 }; for (auto hex : hex_list) { color.setHex(hex); this->base_color_list.push_back(color); } } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5); for (int radius = 30; radius < 320; radius += 1) { ofMesh face, line; line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); int color_index = ofRandom(this->base_color_list.size()); int start_deg = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0025), 0, 1, -360, 360); int deg_len = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.05), 0, 1, -30, 30); face.addVertex(glm::vec3()); face.addColor(ofColor(this->base_color_list[color_index], 64)); 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.addColor(ofColor(this->base_color_list[color_index], 64)); line.addVertex(glm::vec3() + glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0)); line.addColor(this->base_color_list[color_index]); if (deg != start_deg) { face.addIndex(0); face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2); line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 2); } } face.draw(); line.draw(); } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |