public Instance()
{
o2w = new MovingMatrix4(null);
w2o = new MovingMatrix4(null);
bounds = null;
geometry = null;
shaders = null;
modifiers = null;
}
public bool Update(ParameterList pl, SunflowAPI api)
{
string geometryName = pl.getstring("geometry", null);
if (geometry == null || geometryName != null)
{
if (geometryName == null)
{
UI.printError(UI.Module.GEOM, "geometry parameter missing - unable to create instance");
return false;
}
geometry = api.lookupGeometry(geometryName);
if (geometry == null)
{
UI.printError(UI.Module.GEOM, "Geometry \"{0}\" was not declared yet - instance is invalid", geometryName);
return false;
}
}
string[] shaderNames = pl.getstringArray("shaders", null);
if (shaderNames != null)
{
// new shader names have been provided
shaders = new IShader[shaderNames.Length];
for (int i = 0; i < shaders.Length; i++)
{
shaders[i] = api.lookupShader(shaderNames[i]);
if (shaders[i] == null)
UI.printWarning(UI.Module.GEOM, "Shader \"{0}\" was not declared yet - ignoring", shaderNames[i]);
}
}
else
{
// re-use existing shader array
}
string[] modifierNames = pl.getstringArray("modifiers", null);
if (modifierNames != null)
{
// new modifier names have been provided
modifiers = new Modifier[modifierNames.Length];
for (int i = 0; i < modifiers.Length; i++)
{
modifiers[i] = api.lookupModifier(modifierNames[i]);
if (modifiers[i] == null)
UI.printWarning(UI.Module.GEOM, "Modifier \"{0}\" was not declared yet - ignoring", modifierNames[i]);
}
}
o2w = pl.getMovingMatrix("transform", o2w);
w2o = o2w.inverse();
if (w2o == null) {
UI.printError(UI.Module.GEOM, "Unable to compute transform inverse");
return false;
}
return true;
}
/**
* Checks to see if this instance is relative to the specified geometry.
*
* @param g geometry to check against
* @return <code>true</code> if the instanced geometry is equals to g,
* <code>false</code> otherwise
*/
public bool hasGeometry(Geometry g)
{
return geometry == g;
}
