feat: add support of rendering point cloud coloring with intensity

[ktro2828]

What

This pull request introduces a new color mapping system for point cloud visualization, improving flexibility and maintainability. The main change is the addition of a PointCloudColorMode enum and a pointcloud_color function, allowing selection of color modes (distance or intensity) when rendering point clouds. The viewer now uses this new system instead of directly calculating distance-based colors.

Point cloud color mapping improvements:

• Added a PointCloudColorMode enum to define selectable color modes for point cloud visualization, supporting both distance and intensity modes. (t4_devkit/viewer/color.py)
• Implemented a new pointcloud_color function that returns color maps based on the selected color mode, improving extensibility and code clarity. (t4_devkit/viewer/color.py)
• Updated the viewer to use pointcloud_color instead of distance_color, enabling the new color mode selection for point cloud rendering. (t4_devkit/viewer/viewer.py) [1] [2]

Refactoring and API consistency:

• Refactored the distance_color function to remove unused arguments and improve normalization by automatically setting v_min and v_max based on input values. (t4_devkit/viewer/color.py)

Color by distance (current) vs intensity

• Distance

• Intensity

How to Test

t4viz pointcloud <DATASET_PATH>

[github-actions]

☂️ Python Coverage

current status: ❌

Overall Coverage

Lines	Covered	Coverage	Threshold	Status
2756	2117	77%	50%	🟢

New Files

No new covered files...

Modified Files

File	Coverage	Status
t4_devkit/helper/rendering.py	15%	🔴
t4_devkit/viewer/color.py	84%	🟢
t4_devkit/viewer/viewer.py	87%	🟢
TOTAL	62%	🔴

updated for commit: 50cd81a by action🐍

[Copilot]

Pull Request Overview

This PR introduces support for point cloud coloring based on intensity values in addition to the existing distance-based coloring. The changes create a more flexible color mapping system that allows users to choose between different visualization modes for point clouds.

• Added a new PointCloudColorMode enum to define selectable color modes (distance or intensity)
• Implemented a pointcloud_color function that returns appropriate color maps based on the selected mode
• Refactored the distance_color function to automatically determine min/max values for normalization

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
t4_devkit/viewer/color.py	Added enum for color modes and new pointcloud_color function; refactored distance_color function
t4_devkit/viewer/viewer.py	Updated import and point cloud rendering to use new pointcloud_color function

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[Copilot]

Pull Request Overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

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