demo.helicopter
Class CollisionDetectionTerrainReader

java.lang.Object
  demo.helicopter.CollisionDetectionTerrainReader

public class CollisionDetectionTerrainReader

extends java.lang.Object

Field Summary

java.util.Vector	data
java.util.Vector	index
int[]	xCoordIndexArray
double[]	xFacetNormal
double[]	xValsArray
int[]	yCoordIndexArray
double[]	yFacetNormal
double[]	yValsArray
int[]	zCoordIndexArray
double[]	zFacetNormal
double[]	zValsArray

Constructor Summary

CollisionDetectionTerrainReader()

Method Summary

void	calcNormals() calcNormals() - calculates the normals from the information from the terrain file
void	createArrayData(java.io.StreamTokenizer st) createArrayData() - creates the array data from the data from the input terrain file
void	createFullArray() createFullArray() - create complete array of all coordinate data using index information
boolean	extractArrayValues() extractArrayValues() - processes each token and puts in vector if its a vertex
void	getNormalHeight(double xCoord, double yCoord, double[] normalHeight) getNormalHeight - return normal vector of current location in array indices 0-2 and height in position 3
static void	main(java.lang.String[] args) Main routine for CollisionDetectionTerrainReader clss
void	parseFile() parseFile() - the parsfile for reading the terrain
void	transform() transform ()- rotate and translate coordinates into VRML; for rotate about axis v vector where u = normal(v) S = Matrix[(0,-u3,u2) (u3,0,-u1) (-u2,u1,0)] R (rotation matrix) = u*u + cos(alpha)*(Identity -u*u) + sin(alpha)*S then translate VRML into PDU coordinates

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

xValsArray

public double[] xValsArray

yValsArray

public double[] yValsArray

zValsArray

public double[] zValsArray

xCoordIndexArray

public int[] xCoordIndexArray

yCoordIndexArray

public int[] yCoordIndexArray

zCoordIndexArray

public int[] zCoordIndexArray

xFacetNormal

public double[] xFacetNormal

yFacetNormal

public double[] yFacetNormal

zFacetNormal

public double[] zFacetNormal

data

public java.util.Vector data

index

public java.util.Vector index

Constructor Detail

CollisionDetectionTerrainReader

public CollisionDetectionTerrainReader()

Method Detail

parseFile

public void parseFile()

parseFile() - the parsfile for reading the terrain

Returns:

- void

createArrayData

public void createArrayData(java.io.StreamTokenizer st)

createArrayData() - creates the array data from the data from the input terrain file

Returns:

- void

extractArrayValues

public boolean extractArrayValues()

extractArrayValues() - processes each token and puts in vector if its a vertex

Returns:

boolean if success

transform

public void transform()

transform ()- rotate and translate coordinates into VRML; for rotate about axis v vector where u = normal(v) S = Matrix[(0,-u3,u2) (u3,0,-u1) (-u2,u1,0)] R (rotation matrix) = u*u + cos(alpha)*(Identity -u*u) + sin(alpha)*S then translate VRML into PDU coordinates

Returns:

void

createFullArray

public void createFullArray()

createFullArray() - create complete array of all coordinate data using index information

Returns:

void

calcNormals

public void calcNormals()

calcNormals() - calculates the normals from the information from the terrain file

being used.

Returns:

- void

getNormalHeight

public void getNormalHeight(double xCoord,
                            double yCoord,
                            double[] normalHeight)

getNormalHeight - return normal vector of current location in array indices 0-2 and height in position 3

main

public static void main(java.lang.String[] args)

Main routine for CollisionDetectionTerrainReader clss