/** Clones this material. The result is returned. */
@Override
public Material clone() {
try {
Material mat = (Material) super.clone();
if (additionalState != null) {
mat.additionalState = additionalState.clone();
}
mat.technique = null;
mat.techniques = new HashMap<String, Technique>();
mat.paramValues = new ListMap<String, MatParam>();
for (int i = 0; i < paramValues.size(); i++) {
Map.Entry<String, MatParam> entry = paramValues.getEntry(i);
mat.paramValues.put(entry.getKey(), entry.getValue().clone());
}
return mat;
} catch (CloneNotSupportedException ex) {
throw new AssertionError(ex);
}
}
/**
* Compares two materials and returns true if they are equal. This methods compare definition,
* parameters, additional render states. Since materials are mutable objects, implementing
* equals() properly is not possible, hence the name contentEquals().
*
* @param otherObj the material to compare to this material
* @return true if the materials are equal.
*/
public boolean contentEquals(Object otherObj) {
if (!(otherObj instanceof Material)) {
return false;
}
Material other = (Material) otherObj;
// Early exit if the material are the same object
if (this == other) {
return true;
}
// Check material definition
if (this.getMaterialDef() != other.getMaterialDef()) {
return false;
}
// Early exit if the size of the params is different
if (this.paramValues.size() != other.paramValues.size()) {
return false;
}
// Checking technique
if (this.technique != null || other.technique != null) {
// Techniques are considered equal if their names are the same
// E.g. if user chose custom technique for one material but
// uses default technique for other material, the materials
// are not equal.
String thisDefName = this.technique != null ? this.technique.getDef().getName() : "Default";
String otherDefName =
other.technique != null ? other.technique.getDef().getName() : "Default";
if (!thisDefName.equals(otherDefName)) {
return false;
}
}
// Comparing parameters
for (String paramKey : paramValues.keySet()) {
MatParam thisParam = this.getParam(paramKey);
MatParam otherParam = other.getParam(paramKey);
// This param does not exist in compared mat
if (otherParam == null) {
return false;
}
if (!otherParam.equals(thisParam)) {
return false;
}
}
// Comparing additional render states
if (additionalState == null) {
if (other.additionalState != null) {
return false;
}
} else {
if (!additionalState.equals(other.additionalState)) {
return false;
}
}
return true;
}