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+HEXAHEXAFLEXAGON IMPLEMENTATION STATUS & TODO
+=========================================
+
+CURRENT IMPLEMENTATION:
+---------------------
+- Core mathematical model for a hexahexaflexagon with 19 equilateral triangles
+- 3D transformation utilities (rotation matrices, point transformation)
+- Animation system with easing functions
+- Basic rendering system with debug visualization
+- Mouse interaction handling
+
+WHAT WE'VE TRIED:
+---------------
+1. Initial Rendering Debug Steps:
+   - Added light gray background for visibility
+   - Drew coordinate axes (red for X, green for Y)
+   - Made faces semi-transparent (alpha 0.7)
+   - Added face numbers for identification
+   - Disabled face culling temporarily
+   - Added initial rotation transforms (PI/6 for both X and Y)
+   - Increased scale to 100 for better visibility
+
+2. State Management:
+   - Implemented state tracking for faces, transforms, and animation
+   - Added debug logging for state changes
+   - Simplified initial state creation
+
+CURRENT ISSUES:
+-------------
+1. Visibility:
+   - Faces are being created but not visible (visible faces count = 0)
+   - Transform matrix calculations may not be working as expected
+   - Initial positioning might be incorrect
+
+2. Triangle Strip:
+   - Need to verify the initial strip creation geometry
+   - Connection between triangles needs review
+   - Pat pattern implementation might need adjustment
+
+NEXT STEPS TO TRY:
+----------------
+1. Geometry Verification:
+   - Add debug logging for triangle vertices during creation
+   - Verify triangle dimensions and connections
+   - Add visual markers for triangle orientation
+
+2. Transform Pipeline:
+   - Add step-by-step logging of matrix transformations
+   - Verify matrix multiplication implementation
+   - Test transform chain with simpler shapes first
+
+3. Rendering Improvements:
+   - Implement proper z-ordering for faces
+   - Add depth testing
+   - Improve perspective projection
+   - Add face normal calculations for proper visibility
+
+4. Development Tools:
+   - Add state visualization panel
+   - Add transform controls for manual positioning
+   - Add vertex position display
+   - Create test cases for geometry calculations
+
+5. Simplification Steps:
+   - Start with fewer triangles (e.g., 6) to verify basic folding
+   - Implement single fold before full flexagon
+   - Add step-by-step folding visualization
+
+IMMEDIATE NEXT ACTIONS:
+--------------------
+1. Add vertex position logging in createTriangle()
+2. Verify initial strip layout is correct
+3. Test transform pipeline with single triangle
+4. Add visual debug helpers for face orientation
+5. Implement proper z-depth sorting
+
+QUESTIONS TO RESOLVE:
+------------------
+1. Is the initial triangle strip properly oriented?
+2. Are the transformation matrices being applied in the correct order?
+3. Is the perspective projection working correctly?
+4. Are the face normals being calculated properly?
+5. Is the pat pattern being correctly applied to the strip?
+
+REFERENCES:
+----------
+- Original flexagon research pat notation
+- 3D graphics pipeline best practices
+- Matrix transformation order conventions 
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