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Motion from Noise.
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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) {}; void setRingToMesh(ofMesh& face_target, ofMesh& line_target, glm::vec3 location, float radius, float width, float height); }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(239); ofSetColor(39); ofEnableDepthTest(); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { vector<glm::vec2> location_list = { glm::vec2(ofGetWidth() * 0.5, ofGetHeight() * 0.25), glm::vec2(ofGetWidth() * 0.5, ofGetHeight() * 0.75) }; vector<int> loop_count_list = { 1, 5 }; for (int i = 0; i < location_list.size(); i++) { ofPushMatrix(); ofTranslate(location_list[i]); auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000)); ofSetColor(39); ofSetLineWidth(3); ofBeginShape(); for (int x = 0; x <= 340; x += 1) { auto y = ofMap(ofNoise(noise_seed.x, (x * 0.5 + ofGetFrameNum()) * 0.008), 0, 1, -100, 100); ofVertex(x, y); if (x == 0) { ofDrawCircle(x, y, 5); } } ofEndShape(); ofDrawLine(glm::vec2(0, -100), glm::vec2(0, 100)); ofDrawLine(glm::vec2(340, -100), glm::vec2(340, 100)); ofDrawLine(glm::vec2(-10, -50), glm::vec2(10, -50)); ofDrawLine(glm::vec2(-10, 0), glm::vec2(10, 0)); ofDrawLine(glm::vec2(-10, 20), glm::vec2(10, 20)); ofDrawLine(glm::vec2(-10, 70), glm::vec2(10, 70)); ofTranslate(-180, 0); ofNoFill(); ofSetColor(39); ofSetLineWidth(1.5); for (int k = 0; k < loop_count_list[i]; k++) { if (k > 0) { ofSetColor(39); ofDrawLine(glm::vec2(180 + k * 6, -100), glm::vec2(180 + k * 6, 100)); } ofPushMatrix(); auto noise_value = ofNoise(noise_seed.x, (ofGetFrameNum() + k * 6) * 0.008); if (noise_value > 0.25 && noise_value < 0.5) { ofRotateX(ofMap(noise_value, 0.25, 0.5, -180, 180)); } if (noise_value > 0.6 && noise_value < 0.85) { ofRotateY(ofMap(noise_value, 0.6, 0.85, -180, 180)); } ofMesh face, line; line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); this->setRingToMesh(face, line, glm::vec3(), ofMap(k, 0, loop_count_list[i], 120, 50), 20, 10); ofSetColor(39); face.draw(); ofSetColor(239); line.draw(); ofPopMatrix(); } ofPopMatrix(); } } //-------------------------------------------------------------- void ofApp::setRingToMesh(ofMesh& face_target, ofMesh& line_target, glm::vec3 location, float radius, float width, float height) { int deg_span = 90; for (int deg = 45; deg < 400; deg += deg_span) { auto face_index = face_target.getNumVertices(); vector<glm::vec3> vertices; vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5)); vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + deg_span) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + deg_span) * DEG_TO_RAD), height * -0.5)); vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + deg_span) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + deg_span) * DEG_TO_RAD), height * 0.5)); vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5)); vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5)); vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + deg_span) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + deg_span) * DEG_TO_RAD), height * -0.5)); vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + deg_span) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + deg_span) * DEG_TO_RAD), height * 0.5)); vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5)); face_target.addVertices(vertices); face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 7); face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 7); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 2); auto line_index = line_target.getNumVertices(); line_target.addVertices(vertices); line_target.addIndex(line_index + 0); line_target.addIndex(line_index + 1); line_target.addIndex(line_index + 2); line_target.addIndex(line_index + 3); line_target.addIndex(line_index + 4); line_target.addIndex(line_index + 5); line_target.addIndex(line_index + 6); line_target.addIndex(line_index + 7); } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |