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移り変わっていく感UPさせました
Random walk from circle to circle.
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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 mouseEntered(int x, int y) {}; void mouseExited(int x, int y) {}; void windowResized(int w, int h) {}; void dragEvent(ofDragInfo dragInfo) {}; void gotMessage(ofMessage msg) {}; int frame_span; int size; vector<glm::vec2> locations; vector<int> current_indexes; vector<int> next_indexes; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(239); ofSetColor(39); ofSetLineWidth(1.5); ofNoFill(); this->frame_span = 30; this->size = 15; while (this->locations.size() < 150) { auto location = glm::vec2(ofRandom(ofGetWidth()), ofRandom(ofGetHeight())); bool flag = true; for (int i = 0; i < this->locations.size(); i++) { if (glm::distance(location, this->locations[i]) < this->size * 3) { flag = false; break; } } if (flag) { this->locations.push_back(location); } } for (int i = 0; i < 30; i++) { this->current_indexes.push_back(0); this->next_indexes.push_back(ofRandom(this->locations.size())); } } //-------------------------------------------------------------- void ofApp::update() { for (int i = 0; i < this->current_indexes.size(); i++) { if (ofGetFrameNum() % (this->frame_span * 2) == 0) { int next_index = this->next_indexes[i]; int current_index = next_index; vector<int> near_indexes; for (int location_index = 0; location_index < this->locations.size(); location_index++) { if (current_index == location_index) { continue; } if (glm::distance(this->locations[current_index], this->locations[location_index]) < this->size * 8) { near_indexes.push_back(location_index); } } if (near_indexes.size() > 0) { next_index = near_indexes[ofRandom(near_indexes.size())]; } this->current_indexes[i] = current_index; this->next_indexes[i] = next_index; } } } //-------------------------------------------------------------- void ofApp::draw() { int frame_param = ofGetFrameNum() % this->frame_span; for (int i = 0; i < this->next_indexes.size(); i++) { int current_index = this->current_indexes[i]; int next_index = this->next_indexes[i]; auto angle_current = std::atan2(this->locations[next_index].y - this->locations[current_index].y, this->locations[next_index].x - this->locations[current_index].x); auto satellite_point_current = this->locations[current_index] + glm::vec2(this->size * cos(angle_current), this->size * sin(angle_current)); auto angle_next = std::atan2(this->locations[current_index].y - this->locations[next_index].y, this->locations[current_index].x - this->locations[next_index].x); auto satellite_point_next = this->locations[next_index] + glm::vec2(this->size * cos(angle_next), this->size * sin(angle_next)); if (ofGetFrameNum() % (this->frame_span * 2) < this->frame_span) { ofDrawLine(satellite_point_current, satellite_point_next); for (int location_index = 0; location_index < this->locations.size(); location_index++) { ofDrawCircle(this->locations[location_index], this->size); if (current_index == location_index) { int deg_param = ofMap(frame_param, 0, this->frame_span, 180, 0); float start_deg = angle_current * RAD_TO_DEG; ofFill(); ofBeginShape(); for (int deg = start_deg; deg <= start_deg + deg_param; deg++) { ofVertex(this->locations[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD))); } for (int deg = start_deg - deg_param; deg <= start_deg; deg++) { ofVertex(this->locations[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD))); } ofEndShape(); ofNoFill(); } if (next_index == location_index) { int deg_param = ofMap(frame_param, 0, this->frame_span, 0, 180); float start_deg = angle_next * RAD_TO_DEG; ofFill(); ofBeginShape(); for (int deg = start_deg; deg <= start_deg + deg_param; deg++) { ofVertex(this->locations[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD))); } for (int deg = start_deg - deg_param; deg <= start_deg; deg++) { ofVertex(this->locations[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD))); } ofEndShape(); ofNoFill(); } } } else { auto distance = glm::distance(satellite_point_next, satellite_point_current); distance = ofMap(frame_param, this->frame_span, this->frame_span * 2, 0, distance); auto direction = satellite_point_next - satellite_point_current; ofDrawLine(satellite_point_next, satellite_point_next + glm::normalize(direction) * distance); for (int location_index = 0; location_index < this->locations.size(); location_index++) { ofDrawCircle(this->locations[location_index], this->size); } ofFill(); ofDrawCircle(this->locations[next_index], this->size); ofNoFill(); } } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |