mask |
bitmask of options which are specified, Long,
if high bit set a second Long follows |
value |
bitmask of options which are set on,
Long, if high bit of mask set a second Long
follows |
hsr |
combination of hsr (low nibble) and transparent
hsr (high nibble) enums |
tech_quant |
combination of technology and quantization bitmasks |
face_displacement |
displacement applied to "push back" surfaces so
associated edges may be seen more clearly |
lock_mask |
bitmask showing which attribute types are having
their lock setting changed |
lock_value |
bitmask showing which of those attribute settings
are going to "locked" |
color_lock_mask |
bitmask showing which geometries
are having their color lock settings changed |
color_lock_value |
bitmask showing which of those color settings
are going to "locked" |
visibility_lock_mask |
bitmask showing which geometries
are having their visibility lock settings changed |
visibility_lock_value |
bitmask showing which of those visibility settings
are going to "locked" |
fog_limits |
near and far limits of depth cueing (relative
to camera position) |
stereo_separation |
offset angle (in degrees) from view axis for each
eye in a stereo view |
buffer_options_mask |
bitmask showing which software frame buffer options
are being changed |
buffer_options_value |
bitmask showing which buffer options are being
set to "on" |
buffer_size_limit |
size limit for buffer |
hidden_line_options |
bitmask showing which hidden linde options are
set, Byte. If high bit set, a second Byte
follows. |
hidden_line_pattern |
pattern used to draw the "hidden" lines |
hidden_line_dim_factor |
color dimming factor for the "hidden" lines |
hidden_line_face_displacement |
face displacement used when doing hidden line
calculations |
nurbs_options_mask |
bitmask indicating which NURBS curve/surface options
are being changed, Byte. If high bit set, a second
Byte follows. |
nurbs_options_value |
bitmask indications which NURBS options are set
"on", Byte. If high bit set, a second Byte
follows. |
nurbs_curve_budget |
number of points to generate along a NURBS curve |
nurbs_curve_continued_budget |
additional points generated per control point
beyonf one over the degree of the curve |
nurbs_surface_budget |
maximum number of points to generate on the NURBS
surface |
nurbs_surface_trim_budget |
number of points to generate along NURBS trimming
curves |
nurbs_surface_max_trim_curve_deviation |
Distance, in the NURBS Surface's normalized [0..1]
parametric space, of trim curve vertices from the parametric definition
of the trimming curve. |
nurbs_surface_max_facet_angle |
The largest angle allowed between the surface
tangents evaluated at any two corners of a given facet. Expressed in
degrees. |
nurbs_surface_max_facet_deviation |
Distance, in object space, of the tessellation
to the parametric definition of the surface. |
nurbs_surface_max_facet_width |
The largest allowable length, in the NURBS Surface's
normalized [0..1] parametric space, of any facet's edge. |
LOD_options_mask |
bitmask indicating which Level Of Detail options
which are being changed |
LOD_options_value |
bitmask indication which LOD options are being
set "on" |
LOD_algorithm |
indicates the preferred choice of LOD generation |
LOD_explicit_bounding |
specific bounding volume used with some LOD choices |
LOD_num_cutoffs |
number of cutoff settings |
LOD_cutoffs |
minimum limits for generating a LOD at each level |
LOD_clamp |
selects a specific LOD level for display |
LOD_fallback |
indicates what (if anything) to draw when the
desired LOD level is not present |
LOD_max_degree |
maximum number of edges to connect to a vertex
in a generated LOD |
LOD_min_triangle_count |
lower bound on the number of triangles worth generating
as a LOD |
LOD_num_levels |
number of LOD levels to compute |
LOD_num_ratios |
number of ratios specified |
LOD_ratios |
ratios of the number of triangles between a LOD
level and the previous level |
LOD_num_thresholds |
number of threshold setting |
LOD_thresholds |
limits on triangle density before switching to
a lower LOD during display |
LOD_threshold_type |
units specifying triangle density (not present
previous to file version 9.08) |
LOD_heuristic |
indicates method used to determine when a LOD
should not be generated |
tessellation_options |
indicates which tessellation options are set |
tess_num_cylinder |
number of cylinder tessellation settings |
tess_cylinder |
tessellation limits for cylinder display at various
LOD levels |
transparency_options |
one Byte, second Byte if high bit set. preferred
means of handling transparent geometry (low nibble) and flags for other
options |
depth_peeling_layers |
maximum number of transparent layers when
using depth peeling. present if 0x01 bit set in transparency_options |
depth_peeling_min_area |
minimum area affected by a depth peeling pass
to continue processing more layers; positive value is treated as a percentage
of the current screen area, negative as a specifi number of pixels.
present if 0x01 bit set in transparency_options |
cut_geometry_options |
options controlling the generation of capping
faces when geometry is affected by cutting planes |
cut_geometry_level |
controls how geometry is collected for processing
for capping faces |
cut_geometry_tolerance |
tolerance for closing loops when processing capping
faces. negative value indicates value is a percentage of current view
(camera field) instead of object units |
depth_range |
restricts placement of drawing into z-buffer range |
mask_transform |
attempts to override parts of the inherited modelling
and camera transforms |
image_scale |
scaling factors applied to size of images |
simple_shadow_options |
bitmask controlling which simple shadow settings
are present. a second byte follows if the high bit is set |
shadow_plane |
shadow projection plane |
shadow_light |
direction to simulated light for shadow projection |
shadow_color |
color of shadow |
shadow_blur |
number of blurring steps to soften shadow |
shadow_resolution |
size of texture image used for shadow processing |
shadow_opacity |
basic opacity of the shadow, range of 0-1 inclusive |
geometry_options |
miscellaneous options affecting geometry |
hard_edge_angle |
angle specifying limit of sharpness of hard edges |
image_tint |
color used to tint any images |
general_displacement |
Z displacement applied to all geometry |
join_cuttof_angle |
angle at which to force mitered line joins to
be beveled (aka miter limit) |
screen_range |
portion of current window to remap drawing |
display_list_level |
level to which items are collected into display
lists |
stereo_distance |
distance between camera position and the
stereo focal plane. Zero means the focal plane is at the camera target |
shadow_map_flags |
a bit field to set various aspects of shadow
maps |
shadow_map_resolution |
The width and height of shadow maps to be
generated. This value will be clamped up/down to 512, 1024 or 2048 |
shadow_map_samples |
The number of locations in the shadow map
used to determine the percentage value of light received by a pixel
in the rendered scene. |
simple_reflection_flags |
a bit field to set various aspects of simple
reflections |
simple_reflection_plane |
the plane onto which the reflection should
be projected |
simple_reflection_blur |
An integer between 1 and 31 indicating the
level of blurring (softening) that is applied to the reflection |
simple_reflection_attenuation |
the orthogonal distances (in world space)
from the reflection plane to the parallel hither and yon planes between
which reflections linearly interpolate between fully transparent and
fully opaque. |
ambient_up_vector |
the reference vector for ambient light. Ambient
light can be specified as a linear interpolation between an up color
and down color. HOOPS 3dgs supports this as part of its lighting model,
but graphics systems that are unable to do so can simply take an average
of the up and down colors. |
gooch_color_range |
the index of the "warm" color, followed by
the index of the "cold" color. Color indices are interpolated across
that range depending on the surface normal orientation with respect
to the light(s). Ignored if lighting interpolation is set to something
other than gooch. |
gooch_diffuse_weight |
the relative weight of standard lighting
relative to the non-photorealistic component as specified in the paper
by Gooch et al. Ignored if lighting interpolation is set to something
other than gooch. |
Rendering options control miscellaneous display options. For the
specific definitions of what these values mean in HOOPS/3dGS please refer
to the Set_Rendering_Options
specification in the 3dGS Reference Manual.
00000001 |
Texture interpolation of faces |
00000002 |
Texture interpolation of edges |
00000004 |
Texture interpolation of vertices |
00000008 |
Color interpolation of faces |
00000010 |
Color interpolation of edges |
00000020 |
Color interpolation of vertices |
00000040 |
Color index interpolation of faces |
00000080 |
Color index interpolation of edges |
00000100 |
Lighting interpolation for faces is gouraud |
00000200 |
Lighting interpolation for faces is phong |
00000400 |
Lighting interpolation for edges is gouraud |
00000800 |
Lighting interpolation for edges is phong |
00001000 |
Hidden surface algorithm specified, hsr
present if on |
00002000 |
Hidden surface algorithm for transparent items
specified, hsr present if on |
00004000 |
Local viewer |
00008000 |
Perspective Correction |
00010000 |
Display Lists, display_list_level present
if on starting with version 15.15 |
00020000 |
Debug, debug present if on |
00040000 |
Technology, tech_quant present if on |
00080000 |
Quantization, tech_quant present if on |
00100000 |
Attribute Locks, lock_mask and lock_value
present if on |
00200000 |
Face Displacement, face_displacement
present if on |
00400000 |
Fog, fog_limits present if on |
00800000 |
Buffer Options, buffer_options_mask &
buffer_options_value present if on |
01000000 |
Hidden Line Options, hidden_line_options
present if on |
02000000 |
LODs desired |
04000000 |
LOD Options, LOD_options_mask & LOD_options_value
present if on |
08000000 |
NURBS Curve Options, nurbs_options_mask
& nurbs_options_value present if on |
10000000 |
NURBS Surface Options, nurbs_options_mask
& nurbs_options_value present if on |
20000000 |
Stereo Requested |
40000000 |
Stereo Separation, stereo_separation
present if on |
80000000 |
Extended, mask & value are extended
with an extra Long if on |
00000001 |
Tessellations, tessellation_options present
if on |
00000002 |
Transparency style, transparency present
if on |
00000004 |
Hardware acceleration for transparency requested
if on |
00000008 |
Options for processing geometry cuts info capping
faces, cut_geometry_options present if on |
00000010 |
Z-buffer depth range mapping, depth_range
present if on |
00000020 |
Transform masking control, mask_transform
present if on |
00000040 |
Image scaling, image_scale present if
on |
00000080 |
Local Cutting Planes, cutting planes in the current
segment or below only affect geometry at or below their position instead
of affecting the whole scene if on |
00000100 |
Simple shadow, simple_shadow_options
present if on |
00000200 |
Geometry Options, geometry_options present
if on |
00000400 |
Image Tint, image_tint present if on |
00000800 |
Isolines, color index interpolation of faces draws
only the isolines |
00001000 |
Force Grayscale, colors should be replaced with
the nearest gray value |
00002000 |
Transparency Options, transparency_options
present if on |
00004000 |
General Displacement, general_displacement
present if on |
00008000 |
Join Cutoff Angle, join_cutoff_angle
present if on |
00010000 |
Screen Range, screen_range present
if on |
00020000 |
Stereo Distance, stereo_distance
present if on |
00040000 |
Shadow Map, shadow_map present if
on |
00080000 |
Simple Reflection, simple_reflection
present if on |
00100000 |
Ambient Up Vector, ambient_up_vector
present if on |
00200000 |
Gooch Color Range, gooch_color_range
present if on |
00400000 |
Gooch Diffuse Weight, gooch_diffuse_weight
present if on |