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マルチカラー四角形。
Multicolored rectangle.
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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) {}; glm::vec2 make_point(int len, int param); }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(239); ofSetColor(39); ofNoFill(); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { ofColor color; vector<int> hex_list = { 0xee6352, 0x59cd90, 0x3fa7d6, 0xfac05e, 0xf79d84 }; vector<ofColor> color_list; for (auto hex : hex_list) { color.setHex(hex); color_list.push_back(color); } ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5); auto width = 60; auto color_flag = true; auto param_start = ofGetFrameNum() * 0.5; for (auto len = 100; len < ofGetWidth() - 100; len += width) { param_start += 10; int color_index = 0; for (auto param = param_start; param < param_start + 100; param += 20) { vector<glm::vec2> in; vector<glm::vec2> out; for (auto tmp_param = param; tmp_param <= param + 10; tmp_param++) { in.push_back(this->make_point(len, tmp_param)); out.push_back(this->make_point(len + width, tmp_param)); } reverse(out.begin(), out.end()); ofFill(); ofSetColor(color_list[color_index]); ofBeginShape(); ofVertices(in); ofVertices(out); ofEndShape(true); ofNoFill(); ofSetColor(239); ofBeginShape(); ofVertices(in); ofVertices(out); ofEndShape(true); color_index++; } } } //-------------------------------------------------------------- glm::vec2 ofApp::make_point(int len, int param) { param = param % 100; if (param < 25) { return glm::vec2(ofMap(param, 0, 25, -len * 0.5, len * 0.5), -len * 0.5); } else if (param < 50) { return glm::vec2(len * 0.5, ofMap(param, 25, 50, -len * 0.5, len * 0.5)); } else if (param < 75) { return glm::vec2(ofMap(param, 50, 75, len * 0.5, -len * 0.5), len * 0.5); } else { return glm::vec2(-len * 0.5, ofMap(param, 75, 100, len * 0.5, -len * 0.5)); } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |