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java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Canvas
                   |
                   +----jkp.geometry.mesh.awt.MeshDisplayPanel

Summary

public class  MeshDisplayPanel
     extends java.awt.Canvas
     implements jkp.geometry.mesh.MeshProcessable
{
          // Fields 5
     private static double DEFAULTMESHTOLERANCE;
     private Mesh displaymesh;
     private Mesh mesh;
     private int mode;
     private int tricount;

          // Constructors 4
     public MeshDisplayPanel();
     public MeshDisplayPanel(Grid);
     public MeshDisplayPanel(Grid, double);
     public MeshDisplayPanel(Mesh);

          // Methods 14
     private void debugTriangle(GridPoint[], int[], int[]);
     public Grid getGrid();
     public Mesh getMesh();
     public void paint(Graphics);
     private int paintMesh(Graphics);
     private void paintMeshSelection(Mesh);
     private void paintOneTriangle(Graphics, Grid, BasicMesh, BasicMesh, BasicMesh);
     private void paintReference(Graphics);
     private void printPlotPoints(int[], int[]);
     public int processMeshNode(BasicMesh, Object);
     public int processMeshNode(BuildableMesh, Object);
     public void setMesh(Mesh);
     public void setMode(int);
     public void updateMeshSelection(Mesh);
}

Canvas that displays a mesh.

Version:

0.001a 4 Jul 1998

Author:

Jack Perdue j-perdue@tamu.edu si_slick@cy-net.net

Fields

· DEFAULTMESHTOLERANCE

Summary  |  Top

   private static double DEFAULTMESHTOLERANCE

Default terrain deviation tolerance.

   private Mesh displaymesh

The currently select submesh.

   private Mesh mesh

The master mesh -- that is, the root node of the whole mesh.

   private int mode

Current mode (Mandelbrot set or 5-minute elevation data)

   private int tricount

Number of triangles in mesh.

Constructors

· MeshDisplayPanel

Summary  |  Top

   public MeshDisplayPanel() 

Constructs a MeshDisplayPanel with no mesh.

   public MeshDisplayPanel(Grid grid) 

Constructs a MeshDisplayPanel using the given grid to construct a mesh with the default terrain deviation tolerance.

Parameter	Description
grid	The input grid.

   public MeshDisplayPanel(Grid grid, 
                           double tolerance) 

Constructs a MeshDisplayPanel using the given grid to construct a mesh with the given terrain deviation tolerance.

Parameter	Description
grid	The input grid.
tolerance	The terrain deviation tolerance.

   public MeshDisplayPanel(Mesh mesh) 

Construct a MeshDisplayPanel with the given mesh.

Parameter	Description
mesh	The mesh to display.

   private void debugTriangle(GridPoint[] p, 
                              int[] x, 
                              int[] y) 

Top secret

Parameter	Description
p	+XX+
x	+XX+
y	+XX+

   public Grid getGrid() 

Retrives the grid which is the basis for the master mesh.

Returns:

The grid.

   public Mesh getMesh() 

Retrieves the current master mesh.

Returns:

The master mesh.

   public void paint(Graphics g) 

Paint the MeshDisplayPanel. Paints the grid, the mesh, reference marks and the current selected mesh.

Parameter	Description
g	The graphics context.

Overrides:

paint in class Canvas

   private int paintMesh(Graphics g) 

Paint the entire master mesh on the canvas.

Parameter	Description
g	The graphics context to paint to.

Returns:

The number of triangles painted.

   private void paintMeshSelection(Mesh mesh) 

Paint the currently selected mesh.

Parameter	Description
mesh	The selected mesh.

   private void paintOneTriangle(Graphics g, 
                                 Grid grid, 
                                 BasicMesh m0, 
                                 BasicMesh m1, 
                                 BasicMesh m2) 

Paints one triangle of a mesh node on the canvas/panel.

Parameter	Description
g	The graphics context.
grid	The underlying grid
m0	First point.
m1	Second point.
m2	Third point.

   private void paintReference(Graphics g) 

Paint reference lines (first two submesh divisions) on canvas.

Parameter	Description
g	The graphics context to paint to.

   private void printPlotPoints(int[] x, 
                                int[] y) 

Debug

Parameter	Description
x	+XX+
y	+XX+

   public int processMeshNode(BasicMesh m, 
                              Object o) 

Process a single mesh node while traversing the mesh. As implemented by this class, write a triangle to the output file.

Parameter	Description
m	The current submesh being traversed.
o	Parameter to this routine (OutputStream in this case)

Returns:

The number of triangles in the mesh.

   public int processMeshNode(BuildableMesh m, 
                              Object o) 

Paints a mesh nodes triangles.

Parameter	Description
m	The mesh node to paint.
o	The graphics context to paint to.

Returns:

The number of triangles painted.

Implements:

processMeshNode in interface MeshProcessable

   public void setMesh(Mesh mesh) 

Sets the master mesh to be displayed.

Parameter	Description
mesh	The master mesh.

   public void setMode(int mode) 

Set the current mesh mode -- terrain or Mandelbrot set.

Parameter	Description
mode	The new mode.

   public void updateMeshSelection(Mesh mesh) 

Update the currently selected mesh.

Parameter	Description
mesh	The newly selected mesh.

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