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回転後の座標からノイズの値を生成して表示文字を切り替える。
Generate noise values from the rotated coordinates and switch the display character.
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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; float font_size; ofTrueTypeFont font; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(239); ofSetLineWidth(3); ofEnableDepthTest(); this->font_size = 55; this->font.loadFont("fonts/Kazesawa-Bold.ttf", this->font_size, true, true, true); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofRotateY(ofGetFrameNum() * 0.15); ofRotateX(ofGetFrameNum() * 0.3); string word = "0123456789"; int sample_count = 30; auto base_location = glm::vec3(0, 0, 0); for (int r = 0; r < 5; r++) { auto radius = 350 - r * 20; auto noise_param = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000)); auto angle_x = ofMap(ofNoise(noise_param.x, ofGetFrameNum() * 0.0001), 0, 1, -PI * 1.5, PI * 1.5); auto angle_y = ofMap(ofNoise(noise_param.y, ofGetFrameNum() * 0.0001), 0, 1, -PI * 1.5, PI * 1.5); auto angle_z = ofMap(ofNoise(noise_param.z, ofGetFrameNum() * 0.0001), 0, 1, -PI * 1.5, PI * 1.5); auto rotation_x = glm::rotate(glm::mat4(), angle_x, glm::vec3(1, 0, 0)); auto rotation_y = glm::rotate(glm::mat4(), angle_y, glm::vec3(0, 1, 0)); auto rotation_z = glm::rotate(glm::mat4(), angle_z, glm::vec3(0, 0, 1)); for (int i = 0; i < 50; i++) { auto rotation = glm::rotate(glm::mat4(), (i * 7.2f) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0)); auto noise_location = glm::vec4(this->font_size * 0.5, base_location.y + this->font_size * -0.5, radius, 0) * rotation; noise_location = noise_location * rotation_z * rotation_y * rotation_x; int word_index = (int)ofMap(ofNoise(noise_location.x * 0.0001, noise_location.y * 0.0001 - ofGetFrameNum() * 0.005, noise_location.z * 0.0001), 0, 1, 0, word.size() * 2) % word.size(); ofPath chara_path = this->font.getCharacterAsPoints(word[word_index], true, false); vector<ofPolyline> outline = chara_path.getOutline(); ofFill(); ofSetColor(239); ofBeginShape(); for (int outline_index = 0; outline_index < outline.size(); outline_index++) { if (outline_index != 0) { ofNextContour(true); } auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices(); for (auto& vertex : vertices) { auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 350); auto rotation = glm::rotate(glm::mat4(), (i * 7.2f) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0)); location = glm::vec4(location, 0) * rotation; location += base_location; location = glm::vec4(location, 0) * rotation_z * rotation_y * rotation_x; location = glm::normalize(location) * radius; ofVertex(location); } } ofEndShape(); ofNoFill(); ofSetColor(39); ofBeginShape(); for (int outline_index = 0; outline_index < outline.size(); outline_index++) { if (outline_index != 0) { ofNextContour(true); } auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices(); for (auto& vertex : vertices) { auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 350); auto rotation = glm::rotate(glm::mat4(), (i * 7.2f) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0)); location = glm::vec4(location, 0) * rotation; location += base_location; location = glm::vec4(location, 0) * rotation_z * rotation_y * rotation_x; location = glm::normalize(location) * radius; ofVertex(location); } } ofEndShape(); } } this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |