How Do I See How Many Polygons I Have In Maya?

In Autodesk Maya, you can see how many polygons you have by activating the "Poly Count" option in the Heads Up Display menu.

The poly count will then appear in the top-left corner of your viewport, providing a live and detailed count of your entire scene or selected objects and components.

Method: How to activate the Poly Count HUD

1. Navigate to the Display Menu: In the main menu bar, find and click on Display.
2. Select Heads Up Display: In the drop-down menu, hover over Heads Up Display.
3. Click Poly Count: A sub-menu will appear. Click on the Poly Count option to enable the display in your viewport. A set of live statistics will instantly appear in the top-left corner of your scene view.

Understanding the Poly Count Heads Up Display

The Poly Count HUD is a powerful tool because it organizes polygon data into three columns, giving you a comprehensive breakdown of your scene's geometry.

Decoding the poly count metrics

The display provides detailed metrics beyond just faces, giving you a complete understanding of your mesh density. The metrics include:

• Faces: The most direct measure of polygons. For most modeling, this is the number of quads (4-sided polygons) and n-gons (polygons with more than 4 sides).
• Triangles (Tris): This is the raw geometry that all real-time render engines use. A quad face is composed of two triangles, so you will notice the triangle count is often double the face count on quad-based meshes.
• Vertices (Verts): The number of vertices, or points, that make up your mesh.
• Edges: The number of edges connecting the vertices.
• UVs: The number of UVs (texture coordinates) in your scene. This number can differ from the vertex count because UVs can be split for each shell of a mesh, meaning some vertices may have multiple UV coordinates.

Advanced poly count considerations

Smooth mesh preview

• Toggle: By default, the Poly Count display shows the base "cage" mesh. If you press 3 on your keyboard to enter smooth mesh preview, the numbers will update to reflect the significantly higher polygon count of the smoothed mesh. This is a critical feature for artists working with subdivision surfaces.
• Option: For fine-tuned control, you can open the Heads Up Display Options by navigating to Display > Heads Up Display > Poly Count > [Option Box]. Here you can set whether the display should count the smooth preview or the base mesh by default.

Viewport visibility and the poly count

• Invisible objects: The Poly Count HUD is view-dependent. The "Total" column (left) only counts polygon objects currently visible in the viewport.
• Camera tracking: As you move your camera and objects move in and out of the viewing frustum, the total poly count will change. This is especially useful for game developers trying to understand the polygon load for a specific camera angle.

Inspecting a single object or component

• Object mode: In Object mode, selecting a single mesh will show its individual count in the middle column of the HUD.
• Component mode: If you switch to Component mode (e.g., Face mode) and select a single face, the right-hand column will show that single component's data. This helps you quickly inspect specific problem areas of your mesh.

Scripting with MEL for precision

For more advanced users, the built-in MEL (Maya Embedded Language) command polyEvaluate offers a script-based method to get a precise, non-visual count of your polygons. This is particularly useful for automated checks or complex scenes.

Common polyEvaluate commands

• Faces: polyEvaluate -f;
• Vertices: polyEvaluate -v;
• Edges: polyEvaluate -e;
• Triangles: polyEvaluate -t;

Example usage in the Script Editor

1. Open the Script Editor by clicking the button in the bottom-right corner of the Maya interface or by navigating to Windows > General Editors > Script Editor.
2. Type the desired command (e.g., polyEvaluate -f;).
3. Press Enter on the numeric keypad to execute the command. The result will print in the Script Editor history.

Why is monitoring poly count important?

Keeping an eye on your polygon count is a fundamental part of 3D modeling for several reasons:

• Performance: A higher poly count means more data for the computer to process. In fields like video game development and real-time visualization, controlling the polygon budget is crucial for maintaining a smooth, high-performance experience.
• Project requirements: Many projects, especially those for mobile games, virtual reality, or specific pipelines, have strict poly count limitations. Monitoring your count ensures you stay within these constraints.
• Optimized workflow: A clean, low-poly base mesh is easier to work with, modify, and manage. By checking the poly count regularly, you can avoid unknowingly creating excessively dense meshes during your modeling process.
• Quality control: A high triangle-to-face ratio on a mesh primarily made of quads could indicate issues like redundant edges or improper topology. The polyEvaluate command and the HUD help you detect and correct these issues.