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少し崩壊する感じ。
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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; ofMesh face, line; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(30); ofSetWindowTitle("openFrameworks"); ofBackground(255); ofEnableDepthTest(); ofSetLineWidth(3); this->line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); } //-------------------------------------------------------------- void ofApp::update() { this->face.clear(); this->line.clear(); float span = 10; float threshold = 0.45; float noise_param = 0.01; for (float x = -200; x <= 200; x += span) { for (float y = -200; y <= 200; y += span) { for (float z = -200; z <= 0; z += span) { auto noise_value = ofNoise(x * noise_param, y * noise_param, z * noise_param * 0.05 + ofGetFrameNum() * 0.01); if (noise_value < threshold) { continue; } auto noise_value_1 = ofNoise((x - span) * noise_param, y * noise_param, z * noise_param * 0.05 + ofGetFrameNum() * 0.01); auto noise_value_2 = ofNoise(x * noise_param, (y + span) * noise_param, z * noise_param * 0.05 + ofGetFrameNum() * 0.01); auto noise_value_3 = ofNoise((x + span) * noise_param, y * noise_param, z * noise_param * 0.05 + ofGetFrameNum() * 0.01); auto noise_value_4 = ofNoise(x * noise_param, (y - span) * noise_param, z * noise_param * 0.05 + ofGetFrameNum() * 0.01); auto index = this->face.getNumVertices(); vector<glm::vec3> vertices; vertices.push_back(glm::vec3(x - span * 0.5, y - span * 0.5, z)); vertices.push_back(glm::vec3(x - span * 0.5, y + span * 0.5, z)); vertices.push_back(glm::vec3(x + span * 0.5, y + span * 0.5, z)); vertices.push_back(glm::vec3(x + span * 0.5, y - span * 0.5, z)); this->face.addVertices(vertices); this->face.addIndex(index + 0); this->face.addIndex(index + 1); this->face.addIndex(index + 2); this->face.addIndex(index + 0); this->face.addIndex(index + 2); this->face.addIndex(index + 3); if (noise_value_1 < threshold || x == -200) { this->line.addVertex(vertices[0]); this->line.addVertex(vertices[1]); this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2); } if (noise_value_2 < threshold || y == 200) { this->line.addVertex(vertices[1]); this->line.addVertex(vertices[2]); this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2); } if (noise_value_3 < threshold || x == 200) { this->line.addVertex(vertices[2]); this->line.addVertex(vertices[3]); this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2); } if (noise_value_4 < threshold || y == -200) { this->line.addVertex(vertices[0]); this->line.addVertex(vertices[3]); this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2); } } } } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofSetColor(255); this->face.draw(); ofSetColor(0); this->line.draw(); this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |