Unigine.SplineSegment Class
This class is used to manage individual segments of the world spline graph.
SplineSegment Class
Properties
int NumSources#
The total number of source nodes assigned to this spline segment.
int NumNodes#
The total number of nodes placed along the spline segment.
float Length#
The length of the spline segment.
WorldSplineGraph Parent#
The WorldSplineGraph node to which the spline segment belongs.
vec3 EndUp#
The current "up" vector coordinates for the end point of the spline segment.
vec3 EndTangent#
The current tangent coordinates for the end point of the spline segment.
vec3 StartUp#
The current "up" vector coordinates for the start point of the spline segment.
vec3 StartTangent#
The current tangent coordinates for the start point of the spline segment.
SplinePoint EndPoint#
The current end point of the segment.
SplinePoint StartPoint#
The current start point of the segment.
Members
void SetEnabled ( bool enable, bool with_points = 1 ) #
Sets a value indicating whether the spline segment is enabled.Arguments
- bool enable - true to enable the spline segment, false to disable.
- bool with_points - Use true to enable all points that belong to it as well, false to enable the spline point only.
bool IsEnabled ( ) #
Returns a value indicating whether the spline segment is enabled.Return value
true if the spline segment is enabled; otherwise, false.vec3 CalcPoint ( float t ) #
Returns the coordinates of the point at the parametrically specified position on the segment (along the T axis).
Arguments
- float t - Position of the point on the segment, specified parametrically along the T (times axis) in the [0.0f, 1.0f] range.
Return value
Coordinates of the point.vec3 CalcTangent ( float t ) #
Returns the tangent coordinates for the point at the parametrically specified position on the segment (along the T axis).
Arguments
- float t - Position of the point on the segment, specified parametrically along the T (times axis) in the [0.0f, 1.0f] range.
Return value
Tangent coordinates for the point at the specified position on the segment.vec3 CalcUpVector ( float t ) #
Returns the "up" vector coordinates for the point at the parametrically specified position on the segment (along the T axis).
Arguments
- float t - Position of the point on the segment, specified parametrically along the T (times axis) in the [0.0f, 1.0f] range.
Return value
Coordinates of the "up" vector for the point at the specified position on the segment.float LinearToParametric ( float l ) #
Performs conversion of linear position in accordance with the spline segment's length to parametric position (along the T axis).
Arguments
- float l - Linear position on the spline segment in the range [0.0f, 1.0f].
Return value
Parametric position of the point on the segment, along the T (times axis) in the [0.0f, 1.0f] range.void ClearSources ( ) #
Clears the list of source nodes for the spline segment.void AssignSource ( string name, int forward_axis = 0 ) #
Assigns a source node with the given name to the spline segment and sets the specified forward axis for it.Arguments
- string name - Source node name.
- int forward_axis - Forward axis to be set for the source node. One of the FORWARD_ variables. The X axis is used by default.
void RemoveSource ( string name, int forward_axis = FORWARD_Y ) #
Removes the source node with the given name.Arguments
- string name - Name of the source node to be removed.
- int forward_axis - Forward axis for the source node. One of the FORWARD_ variables. The Y axis is used by default.
void GetSources ( string[] OUT_sources ) #
Returns a list of source nodes assigned to the spline segment and puts it to the specified vector.Arguments
- string[]
OUT_sources - List of source nodes assigned to the spline segment.NoticeThis output buffer is to be filled by the Engine as a result of executing the method.
void SetSegmentMode ( string name, int segment_mode = SEGMENT_TILING ) #
Sets the segment mode for the source node with the given name.Arguments
- string name - Source node name.
- int segment_mode - Mode for the source node with the given name. One of the SEGMENT_* variables. SEGMENT_TILING is used by default.
int GetSegmentMode ( string name ) #
Returns the current segment mode for the source node with the given name.Arguments
- string name - Source node name.
Return value
Mode for the source node with the given name. One of the SEGMENT_* variables. SEGMENT_STRETCH is used by default.void SetUVTiling ( string name, int enable_uv_tiling = 0 ) #
Sets a value indicating whether UV tiling for the material textures of the source node with the given name is enabled.Arguments
- string name - Source node name.
- int enable_uv_tiling - 1 to enable UV tiling for the material textures of the source node, 0 - to stretch textures. The default value is 0.
int GetUVTiling ( string name ) #
Returns a value indicating whether UV tiling for the material textures of the source node with the given name is enabled.Arguments
- string name - Source node name.
Return value
1 if UV tiling for the material textures of the source node is enabled; otherwise (textures are stretched), 0.void SetAdaptiveAngleThreshold ( string name, float adaptive_angle_threshold = 1.0f ) #
Sets the angle threshold value for splitting source node with the given name. If an angle between the tangents for the two subsequent parts of the spline segment exceeds this value, the node will be split.Notice
This parameter is used only for the SEGMENT_ADAPTIVE mode.
Arguments
- string name - Source node name.
- float adaptive_angle_threshold - Angle threshold value for the source node with the given name, in degrees. The default value is 1.0f.
float GetAdaptiveAngleThreshold ( string name ) #
Returns the current angle threshold value for splitting source node with the given name. If an angle between the tangents for the two subsequent parts of the spline segment exceeds this value, the node will be split.Notice
This parameter is used only for the SEGMENT_ADAPTIVE mode.
Arguments
- string name - Source node name.
Return value
Angle threshold value for the source node with the given name, in degrees. The default value is 1.0f.void SetGap ( string name, float gap = 0.0f ) #
Sets the size of the gap between the adjacent copies of the source node with the given name tiled along the spline segment.Notice
This parameter is used only for the SEGMENT_TILING mode.
Arguments
- string name - Source node name.
- float gap - Gap size to be set, in units.
float GetGap ( string name ) #
Returns the current size of the gap between the adjacent copies of the source node with the given name tiled along the spline segment.Notice
This parameter is used only for the SEGMENT_TILING mode.
Arguments
- string name - Source node name.
Return value
Current gap size, in units.void Copy ( SplineSegment src, int copy_endpoints_data = 1 ) #
Copies all parameters from the specified source spline segment.Arguments
- SplineSegment src - Source spline segment.
- int copy_endpoints_data - Use 1 to copy all parameters of segment's endpoints as well, 0 to use default ones. The default value is 0.
SplineSegment Clone ( int clone_points = 0 ) #
Returns a clone of the spline segment.Arguments
- int clone_points - Use 1 to copy all parameters of segment's endpoints as well, 0 to use default ones. The default value is 0.
Return value
Clone of the spline segment.int GetForwardAxis ( string name ) #
Returns the forward axis used for the source node with the specified name.Arguments
- string name - Source node name.
Return value
Forward axis for the source node. One of the FORWARD_ variables.Node GetNode ( int index ) #
Returns a node assigned to the segment by its number.Arguments
- int index - Number of the desired node in a row of nodes placed along the segment in the range from 0 to the total number of nodes placed along the segment.
Return value
Node placed along the segment at the specified position (number).Last update:
2022-02-04
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