VIEWPORT

100

Subclass marker (AcDbViewport)

10

Center point (in WCS)

DXF: X value; APP: 3D point

20, 30

DXF: Y and Z values of center point (in WCS)

40

Width in paper space units

41

Height in paper space units

68

Viewport status field:

-1 = On, but is fully off screen, or is one of the viewports that is not active because the $MAXACTVP count is currently being exceeded.

0 = Off

<positive value > = On and active. The value indicates the order of stacking for the viewports, where 1 is the active viewport, 2 is the next, and so forth

69

Viewport ID

12

View center point (in DCS)

DXF: X value; APP: 2D point

22

DXF: View center point Y value (in DCS)

13

Snap base point

DXF: X value; APP: 2D point

23

DXF: Snap base point Y value

14

Snap spacing

DXF: X value; APP: 2D point

24

DXF: Snap spacing Y value

15

Grid spacing

DXF: X value; APP: 2D point

25

DXF: Grid spacing Y value

16

View direction vector (in WCS)

DXF: X value; APP: 3D vector

26, 36

DXF: Y and Z values of view direction vector (in WCS)

17

View target point (in WCS)

DXF: X value; APP: 3D vector

27, 37

DXF: Y and Z values of view target point (in WCS)

42

Perspective lens length

43

Front clip plane Z value

44

Back clip plane Z value

45

View height (in model space units)

50

Snap angle

51

View twist angle

72

Circle zoom percent

331

Frozen layer object ID/handle (multiple entries may exist) (optional)

90

Viewport status bit-coded flags:

1 (0x1) = Enables perspective mode

2 (0x2) = Enables front clipping

4 (0x4) = Enables back clipping

8 (0x8) = Enables UCS follow

16 (0x10) = Enables front clip not at eye

32 (0x20) = Enables UCS icon visibility

64 (0x40) = Enables UCS icon at origin

128 (0x80) = Enables fast zoom

256 (0x100) = Enables snap mode

512 (0x200) = Enables grid mode

1024 (0x400) = Enables isometric snap style

2048 (0x800) = Enables hide plot mode

4096 (0x1000) = kIsoPairTop. If set and kIsoPairRight is not set, then isopair top is enabled. If both kIsoPairTop and kIsoPairRight are set, then isopair left is enabled

8192 (0x2000) = kIsoPairRight. If set and kIsoPairTop is not set, then isopair right is enabled

16384 (0x4000) = Enables viewport zoom locking

32768 (0x8000) = Currently always enabled

65536 (0x10000) = Enables non-rectangular clipping

131072 (0x20000) = Turns the viewport off

340

Hard-pointer ID/handle to entity that serves as the viewport's clipping boundary (only present if viewport is non-rectangular)

1

Plot style sheet name assigned to this viewport

281

Render mode:

0 = 2D Optimized (classic 2D)

1 = Wireframe

2 = Hidden line

3 = Flat shaded

4 = Gouraud shaded

5 = Flat shaded with wireframe

6 = Gouraud shaded with wireframe

All rendering modes other than 2D Optimized engage the new 3D graphics pipeline. These values directly correspond to the SHADEMODE command and the AcDbAbstractViewTableRecord::RenderMode enum

71

UCS per viewport flag:

0 = The UCS will not change when this viewport becomes active.

1 = This viewport stores its own UCS which will become the current UCS whenever the viewport is activated

74

Display UCS icon at UCS origin flag:

Controls whether UCS icon represents viewport UCS or current UCS (these will be different if UCSVP is 1 and viewport is not active). However, this field is currently being ignored and the icon always represents the viewport UCS

110

UCS origin

DXF: X value; APP: 3D point

120, 130

DXF: Y and Z values of UCS origin

111

UCS X-axis

DXF: X value; APP: 3D vector

121, 131

DXF: Y and Z values of UCS X-axis

112

UCS Y-axis

DXF: X value; APP: 3D vector

122, 132

DXF: Y and Z values of UCS Y-axis

345

ID/handle of AcDbUCSTableRecord if UCS is a named UCS. If not present, then UCS is unnamed

346

ID/handle of AcDbUCSTableRecord of base UCS if UCS is orthographic (79 code is non-zero). If not present and 79 code is non-zero, then base UCS is taken to be WORLD

79

Orthographic type of UCS:

0 = UCS is not orthographic

1 = Top; 2 = Bottom

3 = Front; 4 = Back

5 = Left; 6 = Right

146

Elevation

170

ShadePlot mode:

0 = As Displayed

1 = Wireframe

2 = Hidden

3 = Rendered

61

Frequency of major grid lines compared to minor grid lines

332

Background ID/Handle (optional)

333

Shade plot ID/Handle (optional)

348

Visual style ID/Handle (optional)

292

Default lighting flag. On when no user lights are specified.

282

Default lighting type:

0 = One distant light

1 = Two distant lights

141

View brightness

142

View contrast

63,421,431

Ambient light color. Write only if not black color.

361

Sun ID/Handle (optional)

335

343

344

91