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湧き線。
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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) {}; ofEasyCam cam; ofMesh face, line; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(25); ofSetWindowTitle("openFrameworks"); ofBackground(39); ofNoFill(); ofEnableDepthTest(); this->line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); this->face.clear(); this->line.clear(); for (int radius = 0; radius <= 1000; radius += 10) { int start_index = this->line.getNumVertices(); int index = start_index; for (int deg = 0; deg < 360; deg += 1) { auto z = radius > 200 ? 0 : ofMap(radius, 0, 200, -1 * pow(200 - radius, 1.1), 0); auto vertex = glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), z + 1); this->line.addVertex(vertex); if (deg > 0) { this->line.addIndex(index - 1); this->line.addIndex(index); } index++; int next_radius = radius + 10; int next_z = next_radius > 200 ? 0 : ofMap(next_radius, 0, 200, -1 * pow(200 - next_radius, 1.1), 0); vector<glm::vec3> vertices; vertices.push_back(glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), z)); vertices.push_back(glm::vec3(radius * cos((deg + 1) * DEG_TO_RAD), radius * sin((deg + 1) * DEG_TO_RAD), z)); vertices.push_back(glm::vec3(next_radius * cos((deg + 1) * DEG_TO_RAD), next_radius * sin((deg + 1) * DEG_TO_RAD), next_z)); vertices.push_back(glm::vec3(next_radius * cos(deg * DEG_TO_RAD), next_radius * sin(deg * DEG_TO_RAD), next_z)); face.addVertices(vertices); face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2); face.addIndex(face.getNumVertices() - 3); face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 3); face.addIndex(face.getNumVertices() - 4); } this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(start_index); } int index_span = 15; for (int index = 0; index < this->line.getNumVertices() - 360; index += index_span) { this->line.addIndex(index); this->line.addIndex(index + 360); } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofRotateX(-70); ofSetColor(39); this->face.draw(); ofColor color; for (int i = 0; i < 500; i++) { auto radius_base = ofRandom(1000); auto speed = ofRandom(8, 16); int deg = ofRandom(360); int len = ofRandom(10, 20); int tmp_radius = (int)(radius_base + ofGetFrameNum() * speed) % 1000; auto alpha = tmp_radius < 300 ? 255 : ofMap(tmp_radius, 300, 1000, 255, 0); color.setHsb(ofMap(i, 0, 500, 150, 220), 150, 255); ofSetColor(color, alpha); ofSetLineWidth(ofRandom(0.5, 2)); ofBeginShape(); for (int k = 0; k < len; k++) { int radius = (int)(radius_base + (ofGetFrameNum() + k) * speed) % 1000; auto z = radius > 200 ? 1 : ofMap(radius, 0, 200, -1 * pow(200 - radius, 1.1), 1); auto vertex = glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), z + 1); ofVertex(vertex); } ofEndShape(); } this->cam.end(); /* 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); } } */ } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |