Why is coordinate clamping necessary?

Clamping ensures that user-drawn elements, such as measurement lines or bounding boxes, stay strictly within the valid image area even if the user's mouse moves outside the viewer bounds.

Is this compatible with standard XAML RenderTransforms?

Yes, the logic is specifically designed to align with standard XAML TransformGroup ordering, typically applying Flip, then Rotate, then Scale, then Translate.

Can I use this with Zoom and Pan simultaneously?

Absolutely. The skill accounts for both ZoomFactor and Pan offsets (X/Y) when calculating the current visual center and dimensions of the image.

Does this handle rotated images?

Yes, it uses inverse-rotation logic to map click coordinates back to the image's original axis-aligned bounding box for precise detection.

WPF Transformed Image Bounds Checker

Name: WPF Transformed Image Bounds Checker
Author: christian289

bychristian289

•

디자인 도구

Calculates and validates coordinate boundaries for WPF images subject to pan, zoom, and rotation transforms.

소개

This skill provides a robust pattern for determining if mouse coordinates fall within the boundaries of a WPF Image control that has been modified by Scale, Translate, or Rotate transforms. It offers standardized methods for bounds checking and coordinate clamping, ensuring that UI tools like rulers, annotations, and measurement overlays remain accurately constrained to the visual image area regardless of the current view state. It is particularly useful for developers building complex image viewers or specialized CAD-like interfaces in .NET.

주요 기능

Ready-to-use C# implementation for custom image viewer controls
Mathematical clamping of coordinates to transformed image edges
6 GitHub stars
Support for combined Pan (Translation) and Zoom (Scale) transforms
Inverse-rotation coordinate mapping for accurate bounds checking
Order-consistent logic matching standard XAML RenderTransform configurations

사용 사례

Implementing measurement tools that must not extend beyond image boundaries
Restricting interactive UI elements to specific transformed visual regions
Creating annotation systems for medical, satellite, or technical imaging software

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add christian289/dotnet-with-claudecode checking-image-bounds-transform

For use in Claude.ai and ChatGPT

Download Skill

GitHub

소개