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板状のofMeshをグネグネと曲げる。
Bend.
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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) {}; ofEasyCam cam; ofMesh mesh; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(30); ofSetWindowTitle("openframeworks"); ofBackground(239); ofSetColor(39); ofEnableDepthTest(); } //-------------------------------------------------------------- void ofApp::update() { this->mesh.clear(); auto span = 1; auto len = 16; for (auto x = -100; x < 100; x += span) { auto angle_1 = ofMap(ofNoise(abs(x) * 0.02 + ofGetFrameNum() * 0.03), 0, 1, -PI, PI); auto rotation_1 = glm::rotate(glm::mat4(), angle_1, glm::vec3(1, 0, 0)); auto angle_2 = ofMap(ofNoise(abs(x + span) * 0.02 + ofGetFrameNum() * 0.03), 0, 1, -PI, PI); auto rotation_2 = glm::rotate(glm::mat4(), angle_2, glm::vec3(1, 0, 0)); this->mesh.addVertex(glm::vec4(len * 0.5, x, 0, 0) * rotation_1); this->mesh.addVertex(glm::vec4(len * -0.5, x, 0, 0) * rotation_1); this->mesh.addVertex(glm::vec4(len * -0.5, x + span, 0, 0) * rotation_2); this->mesh.addVertex(glm::vec4(len * 0.5, x + span, 0, 0) * rotation_2); auto index = this->mesh.getVertices().size() - 1; this->mesh.addIndex(index - 3); this->mesh.addIndex(index - 2); this->mesh.addIndex(index); this->mesh.addIndex(index - 2); this->mesh.addIndex(index - 1); this->mesh.addIndex(index); } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); this->mesh.draw(); this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |