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Color only the area to be rotated using ofMesh.addColor().
回転させる面にofMesh.addColor()で色付け。
[ Source ]
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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; ofTrueTypeFont font; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(0); ofSetLineWidth(2); ofEnableDepthTest(); this->font.loadFont("fonts/Kazesawa-Bold.ttf", 50, true, true, true); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofRotateX(180); vector<string> word_list = { "0", "1", "2", "3", "6", "5", "4", "7", "8", "9", "0" }; for (int x = -180; x <= 180; x += 60) { for (int y = -180; y <= 180; y += 60) { int word_index = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.003), 0, 1, 0, word_list.size()); auto word = word_list[word_index]; int sample_count = 120; vector<ofPath> word_path = this->font.getStringAsPoints(word, true, false); for (int word_index = 0; word_index < word_path.size(); word_index++) { vector<ofPolyline> outline = word_path[word_index].getOutline(); for (int outline_index = 0; outline_index < outline.size(); outline_index++) { outline[outline_index] = outline[outline_index].getResampledByCount(sample_count); vector<glm::vec3> vertices = outline[outline_index].getVertices(); vector<glm::vec2> mesh_vertices; vector<glm::vec3> base_location_list; vector<float> rad_list; for (int vertices_index = 0; vertices_index < vertices.size(); vertices_index++) { auto base_location = glm::vec3(x, y, 0); base_location += glm::vec3(this->font.stringWidth(word_list[word_index]) * 0.5, this->font.stringHeight(word_list[word_index]) * 0.5, 0); auto noise_value = ofNoise( x * 0.005 + vertices[vertices_index].x * 0.001, (y + vertices[vertices_index].y) * 0.001 + ofGetFrameNum() * 0.006); float param = 0.5; if (noise_value < 0.3) { param = ofMap(noise_value, 0, 0.3, 0, 0.5); } if (noise_value > 0.7) { param = ofMap(noise_value, 0.7, 1, 0.5, 1); } auto rad = ofMap(param, 0, 1, -PI * 3, PI * 3); auto location = vertices[vertices_index] - glm::vec2(this->font.stringWidth(word_list[word_index]) * 0.5, this->font.stringHeight(word_list[word_index]) * 0.5); mesh_vertices.push_back(location); rad_list.push_back(rad); base_location_list.push_back(base_location); } ofMesh face, line; ofColor face_color, line_color; line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); for (int k = 0; k < mesh_vertices.size(); k++) { auto rotate = glm::rotate(glm::mat4(), rad_list[k], glm::vec3(0, 1, 0)); if (rad_list[k] != 0) { face_color.setHsb(ofMap(rad_list[k], -PI * 3, PI * 3, 0, 255), 255, 255); line_color = ofColor(239); } else { face_color = ofColor(239, 128); line_color = ofColor(239); } face.addVertex(glm::vec4(base_location_list[k], 0) + glm::vec4(mesh_vertices[k], -5, 0) * rotate); face.addVertex(glm::vec4(base_location_list[k], 0) + glm::vec4(mesh_vertices[k], 5, 0) * rotate); face.addColor(ofColor(face_color, 128)); face.addColor(ofColor(face_color, 128)); line.addVertex(glm::vec4(base_location_list[k], 0) + glm::vec4(mesh_vertices[k], -5, 0) * rotate); line.addVertex(glm::vec4(base_location_list[k], 0) + glm::vec4(mesh_vertices[k], 5, 0) * rotate); line.addColor(face_color); line.addColor(face_color); if (k > 0) { face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2); face.addIndex(face.getNumVertices() - 4); face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 3); face.addIndex(face.getNumVertices() - 4); line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 3); line.addIndex(line.getNumVertices() - 2); line.addIndex(line.getNumVertices() - 4); } } face.addIndex(face.getNumVertices() - 1); face.addIndex(0); face.addIndex(1); face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2); face.addIndex(2); line.addIndex(line.getNumVertices() - 1); line.addIndex(1); line.addIndex(line.getNumVertices() - 2); line.addIndex(0); face.draw(); line.drawWireframe(); } } } } this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |
[ Link ]
https://github.com/junkiyoshi/Insta20210621
[ Kinako ]