glapp
Class GLCamera

java.lang.Object
  glapp.GLCamera

public class GLCamera
extends java.lang.Object

Camera class by Philipp Crocoll at CodeColony (codecolony.de). Ported from C++ to Java by mark napier (potatoland.org). Can move camera position forward/back, pan left/right, shift up/down, and rotate around X, Y, Z axes. Uses gluLookat() to orient scene to camera position. See Camera.render(). To use: renderScene() { GL11.glMatrixMode(GL11.GL_MODELVIEW); GL11.glLoadIdentity(); camera.Render(); // render scene ... } Requires GL_Vector to perform vector operations. jul13,2006: added move(x,y,z). added ctor(pos,dir,up).

Field Summary

GL_Vector	Position
GL_Vector	RightVector
float	RotatedX
float	RotatedY
float	RotatedZ
GL_Vector	UpVector
GL_Vector	ViewDir

Constructor Summary

GLCamera()

GLCamera(float posx, float posy, float posz, float dirx, float diry, float dirz, float upx, float upy, float upz)

Method Summary

GL_Vector	getViewDir() Return the current camera view direction
void	Move(float x, float y, float z) Move camera position in the given direction
void	Move(GL_Vector Direction) Move camera position in the given direction
void	MoveForward(float Distance)
void	MoveTo(float x, float y, float z) Move camera to the given xyz
void	MoveUpward(float Distance)
void	Render() Call GLU.gluLookAt() to set view position, direction and orientation.
void	RotateV(float Angle) Rotate the camera around the absolute vertical axis (0,1,0), NOT around the cameras Y axis.
void	RotateX(float Angle)
void	RotateY(float Angle)
void	RotateZ(float Angle)
void	setCamera(float targetX, float targetY, float targetZ, float distance) Set the camera to look at a target.
void	setCamera(float posx, float posy, float posz, float dirx, float diry, float dirz, float upx, float upy, float upz) Set the camera position, view direction and up vector.
void	StrafeRight(float Distance)
void	viewDir(GL_Vector direction) Move camera position in the given direction

Methods inherited from class java.lang.Object

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

Field Detail

ViewDir

public GL_Vector ViewDir

RightVector

public GL_Vector RightVector

UpVector

public GL_Vector UpVector

Position

public GL_Vector Position

RotatedX

public float RotatedX

RotatedY

public float RotatedY

RotatedZ

public float RotatedZ

Constructor Detail

GLCamera

public GLCamera()

GLCamera

public GLCamera(float posx,
                float posy,
                float posz,
                float dirx,
                float diry,
                float dirz,
                float upx,
                float upy,
                float upz)

Method Detail

setCamera

public void setCamera(float posx,
                      float posy,
                      float posz,
                      float dirx,
                      float diry,
                      float dirz,
                      float upx,
                      float upy,
                      float upz)

Set the camera position, view direction and up vector. NOTE: direction is direction the camera is facing NOT a target position (as in gluLookAt()).

Parameters:

posx - Position of camera

posy -

posz -

dirx - Direction camera is facing

diry -

dirz -

upx - Up vector

upy -

upz -

setCamera

public void setCamera(float targetX,
                      float targetY,
                      float targetZ,
                      float distance)

Set the camera to look at a target. Positions the camera on the same X and Y as the target, at the Z value specified by the distance param, looking down the Z axis.

Parameters:

targetX - camera will face this XYZ

targetY -

targetZ -

distance - distance from target

viewDir

public void viewDir(GL_Vector direction)

Move camera position in the given direction

Move

public void Move(GL_Vector Direction)

Move camera position in the given direction

Move

public void Move(float x,
                 float y,
                 float z)

Move camera position in the given direction

MoveTo

public void MoveTo(float x,
                   float y,
                   float z)

Move camera to the given xyz

RotateX

public void RotateX(float Angle)

RotateY

public void RotateY(float Angle)

RotateZ

public void RotateZ(float Angle)

RotateV

public void RotateV(float Angle)

Rotate the camera around the absolute vertical axis (0,1,0), NOT around the cameras Y axis. This simulates a person looking up or down and rotating in place. You will rotate your body around the vertical axis, while your head remains tilted at the same angle.

Parameters:

Angle - the angle to rotate around the vertical axis in degrees

MoveForward

public void MoveForward(float Distance)

MoveUpward

public void MoveUpward(float Distance)

StrafeRight

public void StrafeRight(float Distance)

Render

public void Render()

Call GLU.gluLookAt() to set view position, direction and orientation. Be sure that the modelview matrix is current before calling Render() (glMatrixMode(GL_MODEL_VIEW)).

getViewDir

public GL_Vector getViewDir()

Return the current camera view direction