\catcode`@=11%
\VDDdef A(0,0)B(4,0)E(1,3)
\VDDcpointmul DC:AB:E:0.4 % D <- A, C <- B multiplication wrt E factor 0.4
\VDDdcanvas1:1
  \VDDdline CD
  \VDDdlpolygon ABCED
\VDDdcanvasend
