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色のランダムウォーク。
Random walk of Colors.
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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> location_list; vector<ofColor> base_color_list; vector<int> current_index_list; vector<int> next_index_list; vector<ofColor> color_list; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(0); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); this->frame_span = 30; this->size = 15; while (this->location_list.size() < 120) { auto location = glm::vec2(ofRandom(80, ofGetWidth() - 80), ofRandom(80, ofGetHeight() - 80)); bool flag = true; for (int i = 0; i < this->location_list.size(); i++) { if (glm::distance(location, this->location_list[i]) < this->size * 3) { flag = false; break; } } if (flag) { this->location_list.push_back(location); } } 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); } for (int i = 0; i < 90; i++) { this->current_index_list.push_back(0); this->next_index_list.push_back(ofRandom(this->location_list.size())); this->color_list.push_back(this->base_color_list[ofRandom(this->base_color_list.size())]); } } //-------------------------------------------------------------- void ofApp::update() { for (int i = 0; i < this->current_index_list.size(); i++) { if (ofGetFrameNum() % (this->frame_span * 2) == 0) { int next_index = this->next_index_list[i]; int current_index = next_index; vector<int> near_indexes; for (int location_index = 0; location_index < this->location_list.size(); location_index++) { if (current_index == location_index) { continue; } if (glm::distance(this->location_list[current_index], this->location_list[location_index]) < this->size * 5) { near_indexes.push_back(location_index); } } if (near_indexes.size() > 0) { next_index = near_indexes[ofRandom(near_indexes.size())]; } this->current_index_list[i] = current_index; this->next_index_list[i] = next_index; } } } //-------------------------------------------------------------- void ofApp::draw() { int frame_param = ofGetFrameNum() % this->frame_span; for (int i = 0; i < this->next_index_list.size(); i++) { ofSetColor(this->color_list[i]); int current_index = this->current_index_list[i]; int next_index = this->next_index_list[i]; auto angle_current = std::atan2(this->location_list[next_index].y - this->location_list[current_index].y, this->location_list[next_index].x - this->location_list[current_index].x); auto satellite_point_current = this->location_list[current_index] + glm::vec2(this->size * cos(angle_current), this->size * sin(angle_current)); auto angle_next = std::atan2(this->location_list[current_index].y - this->location_list[next_index].y, this->location_list[current_index].x - this->location_list[next_index].x); auto satellite_point_next = this->location_list[next_index] + glm::vec2(this->size * cos(angle_next), this->size * sin(angle_next)); if (ofGetFrameNum() % (this->frame_span * 2) < this->frame_span) { ofSetLineWidth(3); auto distance = glm::distance(satellite_point_next, satellite_point_current); distance = ofMap(frame_param, 0, this->frame_span, 0, distance); auto direction = satellite_point_next - satellite_point_current; ofDrawLine(satellite_point_current, satellite_point_current + glm::normalize(direction) * distance); ofSetLineWidth(1.5); for (int location_index = 0; location_index < this->location_list.size(); location_index++) { ofNoFill(); ofSetColor(255); ofDrawCircle(this->location_list[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(); ofSetColor(this->color_list[i]); ofBeginShape(); for (int deg = start_deg; deg <= start_deg + deg_param; deg++) { ofVertex(this->location_list[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->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD))); } ofEndShape(); } if (next_index == location_index) { int deg_param = ofMap(frame_param, 0, this->frame_span, 0, 90); float start_deg = angle_next * RAD_TO_DEG; ofFill(); ofSetColor(this->color_list[i]); ofBeginShape(); for (int deg = start_deg; deg <= start_deg + deg_param; deg++) { ofVertex(this->location_list[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->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD))); } ofEndShape(); } } } else { ofSetLineWidth(3); auto distance = glm::distance(satellite_point_next, satellite_point_current); distance = ofMap(frame_param, 0, this->frame_span, distance, 0); auto direction = satellite_point_next - satellite_point_current; ofDrawLine(satellite_point_next, satellite_point_next - glm::normalize(direction) * distance); ofSetLineWidth(1.5); for (int location_index = 0; location_index < this->location_list.size(); location_index++) { ofSetColor(255); ofNoFill(); ofDrawCircle(this->location_list[location_index], this->size); if (next_index == location_index) { int deg_param = ofMap(frame_param, 0, this->frame_span, 90, 180); float start_deg = angle_next * RAD_TO_DEG; ofFill(); ofSetColor(this->color_list[i]); ofBeginShape(); for (int deg = start_deg; deg <= start_deg + deg_param; deg++) { ofVertex(this->location_list[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->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD))); } ofEndShape(); } } } } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |