3D Extrusion in Photoshop for Vector Logos

Adobe Photoshop's 3D extrusion feature converts flat, two-dimensional vector logos into fully realized three-dimensional objects by projecting vector paths along a depth axis. This process translates 2D Bézier curves into polygonal 3D meshes, automatically generating side walls, bevels, and surface planes. By mapping materials to these generated surfaces and simulating real-world lighting and camera perspectives, Photoshop transforms static vector graphics into dynamic 3D assets that can be viewed and rendered from any angle.

Vector Path Interpretation

The extrusion process begins with the 2D vector data, which consists of mathematical anchor points and Bézier curves defining the logo's outlines along the horizontal (X) and vertical (Y) axes. When the extrusion command is executed, Photoshop reads these closed vector boundaries as the blueprint for the front face of the 3D geometry, preserving the sharpness and precision of the original artwork without raster distortion.

Z-Axis Depth Projection

Photoshop creates depth by duplicating the base path coordinates and translating them along the perpendicular depth (Z) axis. The software then generates connecting polygon faces—known as the extrusion mesh—between the original front boundary and the newly created rear boundary. The user-defined extrusion depth setting directly controls the distance between these two planes, establishing the thickness of the 3D shape.

Beveling and Mesh Deformation

Beyond linear depth, the extrusion engine allows for geometric customization through deformation and cap controls:

• Beveling: Adds angled or rounded edges between the front face and the side walls by slicing the edge vertices at specified angles and widths.
• Inflation: Bends the interior geometry outward or inward, giving the logo's flat face a curved, pillowed appearance.
• Taper and Twist: Scales or rotates the rear face relative to the front face, narrowing or twisting the extrusion along the Z-axis.

Material and Texture Mapping

Once the geometry is generated, Photoshop divides the 3D model into distinct material zones: the Front Inflation, Front Bevel, Extrusion Material, Back Bevel, and Back Inflation. Each zone receives its own shader properties, allowing users to define physical attributes such as diffuse color, specular shine, roughness, metallic reflection, and bump mapping. This separation ensures that the sides of the logo can have a brushed metal or matte finish while the front face maintains a polished or glossy texture.

Virtual Lighting and Scene Rendering

To complete the transformation, the extruded logo is integrated into a 3D coordinate space equipped with customizable cameras and light sources. Photoshop simulates environment lights, infinite directional lights, and point lights to cast accurate geometric shadows, ambient occlusion, and surface highlights. The internal rendering engine then raytraces the scene, calculating light bounces, reflections, and refractions to produce a realistic final image.