public void TransformGameObject(ref GameObject toTransform)
{
toTransform.World = Matrix.Identity;
ScaleGameObject(ref toTransform);
TranslateGameObject(ref toTransform);
RotateGameObject(ref toTransform);
}
public void TranslateGameObject(ref GameObject toBeTranslated)
{
Vector3 posInWorldSpace = toBeTranslated.PositionInWorld;
Matrix translationMatrix = Matrix.CreateTranslation(posInWorldSpace);
toBeTranslated.World *= translationMatrix;
}
public void ScaleGameObject(ref GameObject toBeScaled)
{
float scale = toBeScaled.ScalingInWorld;
Matrix scalingMatrix;
Matrix.CreateScale(scale, out scalingMatrix);
toBeScaled.World *= scalingMatrix;
}
public void RotateGameObject(ref GameObject toBeRotated)
{
Vector3 axis = toBeRotated.RotationAxis;
float angle = MathHelper.ToRadians(toBeRotated.RotationAngleInDegrees);
float angleHalf = angle / 2;
float sinAngleHalf = (float)Math.Sin(angleHalf);
Quaternion rotationQuaternion = new Quaternion(axis.X * sinAngleHalf, axis.Y * sinAngleHalf, axis.Z * sinAngleHalf, (float)Math.Cos(angleHalf));
rotationQuaternion.Normalize();
Matrix rotationMatrix = Matrix.CreateFromQuaternion(rotationQuaternion);
toBeRotated.World *= rotationMatrix;
}
private Level Parse(XmlLevel toParse)
{
Level parsed = new Level();
parsed.AmbientLight = new Vector4(toParse.ambientLightColor.red, toParse.ambientLightColor.blue,
toParse.ambientLightColor.blue, toParse.ambientLightIntensity);
parsed.Lights = new List<LightSource>();
foreach (XmlLightSource lightSource in toParse.lightSources)
{
LightSource parsedLightSource = new LightSource();
parsedLightSource.Light = new Vector4(lightSource.color.red, lightSource.color.green,
lightSource.color.blue, lightSource.lightIntensity);
parsedLightSource.PositionInWorld = new Vector4(lightSource.position.x,
lightSource.position.y, lightSource.position.z, lightSource.position.w);
parsed.Lights.Add(parsedLightSource);
}
parsed.gameObjects = new List<GameObject>();
foreach (XmlGameObject gameObject in toParse.gameObjects)
{
GameObject parsedObject = new GameObject();
// TODO error handling
parsedObject.ObjectModelContentName = gameObject.model;
parsedObject.PositionInWorld = new Vector3(gameObject.position.x,
gameObject.position.y, gameObject.position.z);
parsedObject.RotationAxis = new Vector3(gameObject.rotationAxis.x,
gameObject.rotationAxis.y, gameObject.rotationAxis.z);
parsedObject.ScalingInWorld = gameObject.scaling;
parsedObject.World = Matrix.Identity;
parsed.gameObjects.Add(parsedObject);
}
return parsed;
}
