Parametric Surface Rendering Test

// Parametric Surface Generator
class ParametricSurface {
    constructor(uResolution, vResolution) {
        this.uRes = uResolution;
        this.vRes = vResolution;
        this.vertices = [];
        this.normals = [];
    }
    
    generateSurface(uFunc, vFunc, time) {
        for (let u = 0; u <= this.uRes; u++) {
            for (let v = 0; v <= this.vRes; v++) {
                const uNorm = u / this.uRes;
                const vNorm = v / this.vRes;
                
                // Calculate parametric position
                const pos = this.evaluatePosition(uNorm, vNorm, time);
                this.vertices.push(pos);
                
                // Calculate surface normal
                const normal = this.calculateNormal(uNorm, vNorm, time);
                this.normals.push(normal);
            }
        }
    }
    
    evaluatePosition(u, v, t) {
        // Example: Sine wave surface with time animation
        const x = (u - 0.5) * 10;
        const z = (v - 0.5) * 10;
        const y = Math.sin(x * 0.5 + t) * Math.cos(z * 0.5 + t) * 2;
        
        return { x, y, z };
    }
}