Camera

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Contents

Description

Gnoll use a camera system over the Ogre3D system. It provided to you different sorts of camera:

  • Camera free fly: with a free camera, you can go where you want. It generaly used to debug scenes but it can be used in a specific context.
  • Camera third person: a camera at the third person, means that the camera is behind a target(that you can chose) with a chosen distance, rotations are around this target and the movements of the camera depend of the movements of the target.
  • Camera first person: a camera at the first person,means that the camera is in a target(that you can also choose), his movements depend of the movements of the target.
  • Camera spline:a camera ignored but very usefull, you can set an animation, means by set the position where it pass and at what the moment. it take care of tracing a spline(mathematics sens) for find a way between those point and realises the animation.
  • Camera fixe: a standard and basic camera, this is a camera that you can easily put and position in a scene.

Features

Target Orbital Rotation Axial Rotation Spline Strafing
Camera free fly No Yes Yes No Yes
Camera third person Yes Yes No No No
Camera first person Yes No Yes No No
Camera spline Yes No No Yes No
Camera fixe Yes No No No No

Examples

Configuring files

gScenemanager: This dynamic object contains information about the global scene (cameras, lights, pages, etc.) 

  <dynamicobject instance="gSceneManager">
    <attribute name="currentCamera">
     <string value="camera.camfreefly"/>
    </attribute>
    ...
  </dynamicobject>

Important:

  • The attribute name is important, in the code, Gnoll will search for this name.
  • The name of the Camera Dynamic Object is VERY IMPORTANT, it should be of the form NAME.TYPE_CAMERA (example : camera.camfreefly)

Camera type list:

  • camfreefly
  • camfirstperson
  • camthirdperson
  • camfixe
  • camspline

Configuring camera

All values can be change at your need.

Camera free fly 

  <dynamicobject instance="camera.camfreefly">
    <attribute name="Direction">
     <vector3 x="0.09020296" y="0.08760853" z="-0.9920626"/>
    </attribute>
    <attribute name="MOVE_BACK">
     <float value="1"/>
    </attribute>
    <attribute name="MOVE_FORWARD">
     <float value="1"/>
    </attribute>
    <attribute name="MaximumRotationAroundX">
     <float value="500"/>
    </attribute>
    <attribute name="MaximumRotationAroundY">
     <float value="500"/>
    </attribute>
    <attribute name="Position">
     <vector3 x="0" y="0" z="0"/>
    </attribute>
    <attribute name="ROTATION_AXIS_X">
     <float value="1"/>
    </attribute>
    <attribute name="ROTATION_AXIS_Y">
     <float value="1"/>
    </attribute>
    <attribute name="ROTATION_AXIS_Z">
     <float value="1"/>
    </attribute>
    <attribute name="STRAFE_DOWN">
     <float value="1"/>
    </attribute>
    <attribute name="STRAFE_LEFT">
     <float value="1"/>
    </attribute>
    <attribute name="STRAFE_RIGHT">
     <float value="1"/>
    </attribute>
    <attribute name="STRAFE_UP">
     <float value="1"/>
    </attribute>
    <attribute name="Target">
     <string value=""/>
    </attribute>
    <attribute name="dir_x">
     <float value="-0.87225"/>
    </attribute>
    <attribute name="dir_y">
     <float value="-0.3041443"/>
    </attribute>
    <attribute name="dir_z">
     <float value="-0.3829793"/>
    </attribute>
    <attribute name="far">
     <float value="0"/>
    </attribute>
    <attribute name="fov">
     <float value="0.785"/>
    </attribute>
    <attribute name="name">
     <string value="camera.camfreefly"/>
    </attribute>
    <attribute name="near">
     <float value="1"/>
    </attribute>
    <attribute name="pos_x">
     <float value="873.174"/>
    </attribute>
    <attribute name="pos_y">
     <float value="52.26911"/>
    </attribute>
    <attribute name="pos_z">
     <float value="620.8526"/>
    </attribute>
  </dynamicobject>

Camera first person 

  <dynamicobject instance="camera.camfirstperson">
    <attribute name="Direction">
     <vector3 x="0" y="0" z="-1"/>
    </attribute>
    <attribute name="HeadPosition">
     <vector3 x="7.343328e-34" y="1000" z="7.343374e-34"/>
    </attribute>
    <attribute name="MOVE_BACK">
     <float value="1"/>
    </attribute>
    <attribute name="MOVE_FORWARD">
     <float value="1"/>
    </attribute>
    <attribute name="Position">
     <vector3 x="0" y="0" z="0"/>
    </attribute>
    <attribute name="ROTATION_AXIS_X">
     <float value="1"/>
    </attribute>
    <attribute name="ROTATION_AXIS_Y">
     <float value="1"/>
    </attribute>
    <attribute name="ROTATION_AXIS_Z">
     <float value="1"/>
    </attribute>
    <attribute name="STRAFE_DOWN">
     <float value="1"/>
    </attribute>
    <attribute name="STRAFE_LEFT">
     <float value="1"/>
    </attribute>
    <attribute name="STRAFE_RIGHT">
     <float value="1"/>
    </attribute>
    <attribute name="STRAFE_UP">
     <float value="1"/>
    </attribute>
    <attribute name="Target">
     <string value=""/>
    </attribute>
    <attribute name="far">
     <float value="0"/>
    </attribute>
    <attribute name="fov">
     <float value="0.785"/>
    </attribute>
    <attribute name="name">
     <string value="camera.camfirstperson"/>
    </attribute>
    <attribute name="near">
     <float value="1"/>
    </attribute>
  </dynamicobject>

Camera third person 

  <dynamicobject instance="camera.camthirdperson">
    <attribute name="Direction">
     <vector3 x="0" y="0" z="-1"/>
    </attribute>
    <attribute name="MOVE_BACK">
     <float value="1"/>
    </attribute>
    <attribute name="MOVE_FORWARD">
     <float value="1"/>
    </attribute>
    <attribute name="Position">
     <vector3 x="0" y="0" z="0"/>
    </attribute>
    <attribute name="ROTATION_AXIS_X">
     <float value="1"/>
    </attribute>
    <attribute name="ROTATION_AXIS_Y">
     <float value="1"/>
    </attribute>
    <attribute name="ROTATION_AXIS_Z">
     <float value="1"/>
    </attribute>
    <attribute name="STRAFE_DOWN">
     <float value="1"/>
    </attribute>
    <attribute name="STRAFE_LEFT">
     <float value="1"/>
    </attribute>
    <attribute name="STRAFE_RIGHT">
     <float value="1"/>
    </attribute>
    <attribute name="STRAFE_UP">
     <float value="1"/>
    </attribute>
    <attribute name="Target">
     <string value=""/>
    </attribute>
    <attribute name="amountRotationOnAxisX">
     <float value="0"/>
    </attribute>
    <attribute name="amountRotationOnAxisY">
     <float value="0"/>
    </attribute>
    <attribute name="amountRotationOnAxisZ">
     <float value="0"/>
    </attribute>
    <attribute name="far">
     <float value="0"/>
    </attribute>
    <attribute name="fov">
     <float value="0.785"/>
    </attribute>
    <attribute name="limitRotationOnAxisX">
     <float value="-1"/>
    </attribute>
    <attribute name="limitRotationOnAxisY">
     <float value="-1"/>
    </attribute>
    <attribute name="limitRotationOnAxisZ">
     <float value="-1"/>
    </attribute>
    <attribute name="maxOffset">
     <float value="200"/>
    </attribute>
    <attribute name="minOffset">
     <float value="0"/>
    </attribute>
    <attribute name="name">
     <string value="camera.camthirdperson"/>
    </attribute>
    <attribute name="near">
     <float value="1"/>
    </attribute>
    <attribute name="offset">
     <float value="100"/>
    </attribute>
  </dynamicobject>

Camera fixe 

  <dynamicobject instance="camera.camfixe">
    <attribute name="Direction">
     <vector3 x="0" y="0" z="-1"/>
    </attribute>
    <attribute name="MOVE_BACK">
     <float value="1"/>
    </attribute>
    <attribute name="MOVE_FORWARD">
     <float value="1"/>
    </attribute>
    <attribute name="Position">
     <vector3 x="0" y="0" z="0"/>
    </attribute>
    <attribute name="ROTATION_AXIS_X">
     <float value="1"/>
    </attribute>
    <attribute name="ROTATION_AXIS_Y">
     <float value="1"/>
    </attribute>
    <attribute name="ROTATION_AXIS_Z">
     <float value="1"/>
    </attribute>
    <attribute name="STRAFE_DOWN">
     <float value="1"/>
    </attribute>
    <attribute name="STRAFE_LEFT">
     <float value="1"/>
    </attribute>
    <attribute name="STRAFE_RIGHT">
     <float value="1"/>
    </attribute>
    <attribute name="STRAFE_UP">
     <float value="1"/>
    </attribute>
    <attribute name="Target">
     <string value=""/>
    </attribute>
    <attribute name="far">
     <float value="0"/>
    </attribute>
    <attribute name="fov">
     <float value="0.785"/>
    </attribute>
    <attribute name="name">
     <string value="camera.camfixe"/>
    </attribute>
    <attribute name="near">
     <float value="1"/>
    </attribute>
  </dynamicobject>
Retrieved from "http://wiki.gnoll.org/wiki/Camera"