【转帖】oddbpoint and worlddraw
 

oddbpoint and worlddraw
oddbpoint and worlddraw
hello,
i have implemented a worlddraw class inherited from odgiworlddraw and for each entity call my pent->worlddraw (&myworlddraw)
using this i see that oddbline are passed through as a polyline, that dimensions are dissolved into their constituent elements and so on.
however if the entity is a oddbpoint, then pent->worlddraw (&myworlddraw) does not call any function in my derived class.
which of the virtual functions should a point be implemented through.
regards
gerry
oddbpoint is an entity which may have viewport dependent geometry (depending on pdsize system variable). if worlddraw() returned false it means that geometry is viewport dependent and viewportdraw() should be called.
pdsize:
sets the display size for point objects.
0 creates a point at 5 percent of the drawing area height
>0 specifies an absolute size
<0 specifies a percentage of the viewport size
sergey slezkin
in the case in question pdsize is 0.5, and worlddraw () returned true. i have placed a breakpoint on every fucntion but none of them are activated.
regards
gerry
and what's value of pdmode? it it's 1 - nothing is displayed.
sergey slezkin
pdmode was 0, but i changed it to 96 to obtain a square and a circle. pdsize is positive. i get the same result as previously. that is worlddraw() returns true but none of the breakpoints are activated. in fact if i make pdsize negative then i presume from your earlier reply that worlddraw() should return false, but in fact it still returns true.
gerry