DeMol

High-performance volumetric data visualization with advanced rendering techniques and interactive controls.

Features

Ray Casting

Accurate volume rendering using ray casting

Transfer Functions

Customizable color and opacity mapping

Isosurfaces

Interactive isosurface extraction and rendering

Slice Views

Orthogonal slice visualization

Configuration

interface VolumeConfig {
  data: Float32Array;            // Volume data
  dimensions: [number, number, number];  // Volume dimensions
  spacing: [number, number, number];     // Voxel spacing
  transferFunction?: {          // Transfer function settings
    color: string;              // Base color
    opacity: number;            // Base opacity
    gradient?: string;          // Color gradient
    isovalue?: number;          // Isosurface value
  };
  rendering?: {                 // Rendering settings
    quality: 'low' | 'medium' | 'high';
    samples: number;            // Ray samples
    ambient: number;            // Ambient light
    diffuse: number;            // Diffuse light
  };
}

Methods

setVolume

Sets volume data and configuration

setVolume(config: VolumeConfig): void

updateTransferFunction

Updates transfer function settings

updateTransferFunction(options: Partial<TransferFunction>): void

setSlice

Sets slice view parameters

setSlice(axis: 'x' | 'y' | 'z', position: number): void

extractIsosurface

Extracts isosurface at specified value

extractIsosurface(value: number): Promise<Mesh>

Example

// Create volume renderer
const volume = new VolumeRenderer(viewer);

// Set up volume data
volume.setVolume({
  data: volumeData,
  dimensions: [256, 256, 256],
  spacing: [1, 1, 1],
  transferFunction: {
    color: '#00ff00',
    opacity: 0.8,
    gradient: 'rainbow'
  },
  rendering: {
    quality: 'high',
    samples: 256,
    ambient: 0.2,
    diffuse: 0.8
  }
});

// Update transfer function
volume.updateTransferFunction({
  isovalue: 0.5,
  opacity: 0.9
});

// Extract isosurface
const mesh = await volume.extractIsosurface(0.5);

Related Features

Learn more about other features:

Protein Surface

Surface visualization and analysis

Gradients

Visualize molecular gradients

Volumetric Rendering