What are the states of the attribute "drawflags" under the visual tree in an object?

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Joerg Vogel asked Sep 26, '16 Phil BoBo edited Sep 26, '16

What are the states of the attribute "drawflags" under the visual tree in an object?

The standard value is "0". A luminous plane gets the value "64". I can set this value for other objects, too. Which other states are there? What happens then?

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visual attribute drawflags

Answer 1 · 2016-09-26T09:35:44Z

Allister Wilson answered Sep 26, '16 Phil BoBo edited Sep 26, '16

It's a bit mask, you can find the (complete? @phil.bobo) list of flags by searching for DRAW_FLAG under the main tree, the first result should lead you to MAIN:/project/exec/globals/fsmacros.

Here's the list in 16.2:

#define DRAW_FLAG_BILLBOARD_MASK 0x3
#define DRAW_FLAG_ONE_SIDED 0x4
#define DRAW_FLAG_TWO_SIDED 0x8
#define DRAW_FLAG_NO_DEPTH_TEST 0x10
#define DRAW_FLAG_REFLECTIVE 0x20
#define DRAW_FLAG_LUMINOUS 0x40
#define DRAW_FLAG_SCALE_CHILDREN 0x80
#define DRAW_FLAG_IGNORE_PICKING 0x100
#define DRAW_FLAG_NO_ON_DRAW 0x200
#define DRAW_FLAG_NO_ON_PRE_DRAW 0x400
#define DRAW_FLAG_SKIP_ALL_DRAW 0x800
#define DRAW_FLAG_CENTER_PORT_NAMES 0x1000
#define DRAW_FLAG_INOUT_PORT_NAMES 0x2000

So if you were to set the drawflags attribute to, for example:

DRAW_FLAG_LUMINOUS | DRAW_FLAG_SCALE_CHILDREN

You'd get the equivalent of checking the corresponding boxes in the object's properties.

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Phil BoBo ♦♦ commented · Sep 26, 2016 at 04:10 PM

You can also set certain flags using bit-wise operators in FlexScript or C++:

// make an object draw luminous
set(drawflags(so()),get(drawflags(so())) | DRAW_FLAG_LUMINOUS);

// make an object not draw luminous
set(drawflags(so()),get(drawflags(so())) &~ DRAW_FLAG_LUMINOUS);

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Arun Kr commented · Sep 26, 2016 at 10:02 AM

Can anyone explain, what does this draw flags do?

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