Drawing a Topographical Map

Question

I\'ve been working on a visualization project for 2-dimensional continuous data. It\'s the kind of thing you could use to study elevation data or temperature patterns on a 2

Answer 1

I recommend the CONREC approach:

• Create an empty line segment list
• Split your data into regular grid squares
• For each grid square, split the square into 4 component triangles:
  • For each triangle, handle the cases (a through j):
    • If a line segment crosses one of the cases:
      • Calculate its endpoints
      • Store the line segment in the list
• Draw each line segment in the line segment list

If the lines are too jagged, use a smaller grid. If the lines are smooth enough and the algorithm is taking too long, use a larger grid.