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mlca_Condition.js
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mlca_Condition.js
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/*
Condition
-targetLayerID: identification of the Layer it fetch cells
-kernel: the set of coordinates for this condition neighborhood
-number: constant to be compared with the number of counted neighbors
-state: state to be counted
-compOperation: string with the comparative operator
-layerRef: pointer to the layer it fetch cells
specs = {
layerID,
kernel,
number,
compOperation
}
-count(coordinate): receives a absolute coordinate and return the number of cells in the
desired state in its kernel neighborhood
+check(coordinate): receives a absolute coordinate and return a boolean according
to the counting condition being met or not
*/
if (window.mlca === undefined) {
var mlca = {};
}
mlca.Condition = function(specs){
'use strict';
this.targetLayerID = specs.targetLayerID;
this.kernel = specs.kernel;
this.number = specs.number;
this.state = specs.stateToCount;
if(specs.attributeToCount !== undefined){
this.attribute = specs.attributeToCount;
this.attributeIndex = specs.attributeIndex;
}
this.compOperation = specs.compOperation;
console.log("Condition fetching reference to " + this.targetLayerID);
this.layerRef = mlca.layerList.getLayerByID(this.targetLayerID);
};
mlca.Condition.prototype = {
count: function(coords){
'use strict';
var i,c=0;
if (this.layerRef === undefined) {
this.layerRef = mlca.layerList.getLayerByID(this.targetLayerID);
}
for (i = 0; i<this.kernel.relPosList.length; i += 1){
var cell = this.layerRef.read(this.kernel.getAbsCoords(coords,i));
if (cell.state === this.state){
if(this.attribute !== undefined){
if(cell.attributes[this.attributeIndex] === this.attribute){
c += 1;
}
}
else{
c += 1;
}
}
}
return c;
},
check: function(coords){
'use strict';
var c = this.count(coords);
var number = this.number;
switch (this.compOperation){
case "<":
return c < number;
case ">":
return c > number;
case "<=":
return c <= number;
case ">=":
return c >= number;
case "==":
default:
return c === number;
}
}
};