%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%&
%% 計算圖中某一某一節點i的勢函數
%%輸入：距離矩陣的第i行Mat_DistanceLine, 節點總數Net, 需要計算的節點i——Num_ObjectNode,
%%影響因子Num_Sigma，質量矩陣Mat_Mass， 有效值范圍 Num_EffectRange;
%%輸出：圖中節點i的勢值;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
function [Num_ObjectNodePotential]= Fun_ComputePotential (Mat_DistanceLine, Num_ObjectNode, Num_Sigma, Lin_Mass,Num_EffectRange)

%%對變量進行初始化；
Num_Node = size( Mat_DistanceLine, 2);
Num_ObjectNodePotential = 0;
Num_line = Num_Node;
Lin_ObjectNodePotentail = zeros(1,Num_line);


    %%%%%%%%%%%%%%%%% 計算單個節點對目標節點產生的勢值，并將其存入臨時矩陣中
for i = 1:Net
    
    %% 若節點與目標節點之間的距離大于制定影響范圍，則對該節點產生的勢值為0，否則計算對該節點的勢值
    if Mat_DistanceLine( i) > Num_EffectRange
       Lin_ObjectNodePotential( i) = 0;
    else
        Num_AMidValue = Mat_DistanceLine( i)  / Num_Sigma; 
        Lin_ObjectNodePotential( i) = Lin_Mass(i)* exp( (-1) * Num_AMidValue * Num_AMidValue);
    end
end 

for i = 1 : Num_Node
    Num_ObjectNodePotential = Num_ObjectNodePotential + Lin_ObjectNodePotential( i);
end