19 lines
519 B
Matlab
19 lines
519 B
Matlab
function area = ElementArea( ie )
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% 셕炬데禱충생
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% 渴흙꽝鑒:
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% ie ---- 데禱뵀
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% 럿쀼令:
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% area ---- 데禱충생
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global gNode gElement gMaterial
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xi = gNode( gElement( ie, 1 ), 1 ) ;
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yi = gNode( gElement( ie, 1 ), 2 ) ;
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xj = gNode( gElement( ie, 2 ), 1 ) ;
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yj = gNode( gElement( ie, 2 ), 2 ) ;
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xm = gNode( gElement( ie, 3 ), 1 ) ;
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ym = gNode( gElement( ie, 3 ), 2 ) ;
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ai = xj*ym - xm*yj ;
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aj = xm*yi - xi*ym ;
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am = xi*yj - xj*yi ;
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area = abs((ai+aj+am)/2) ;
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return |