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Phase 2.1: Coordinate System Unification
Create a unified DLM coordinate system that **enhances and extends** the existing DLM `ChainCoordinate` foundation with the best calculation methods from TPO's `RCPCoordinateSystem`.
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# Phase 2.1: Coordinate System Unification **Week:** 2 **Duration:** 2 days **Status:** ✅ Complete **Dependencies:** None
Create a unified DLM coordinate system that **enhances and extends** the existing DLM `ChainCoordinate` foundation with the best calculation methods from TPO's `RCPCoordinateSystem`.
**Key Principle:** DLM coordinates are the foundation - we're unifying the calculation logic, not replacing the core concept.
- ✅ Pydantic model with validation - ✅ Has 5 dimensions (x, y, z, t, n_parts) - ✅ Tree structure (parent/children) - ❌ No calculation methods - ❌ No validation logic beyond Pydantic
- ✅ Rich metadata - ✅ Distance calculations - ✅ Comprehensive calculation in `RCPCoordinateSystem` - ✅ Validation with `CoordinateValidator` - ❌ Only 3 dimensions (missing t, n_parts) - ❌ Not a Pydantic model
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