isoline

isoline — handle the drawing and the computation of isolines.

Synopsis

                    VisuLine;
void                visu_line_draw                      (VisuLine *line,
                                                         float rgb[3]);
float*              visu_line_project                   (VisuLine *line,
                                                         Plane *plane,
                                                         guint *nSeg);
VisuLine*           visu_line_newFromTriangles          (float **data,
                                                         guint nTriangles,
                                                         double isoValue);
void                visu_line_free                      (VisuLine *line);
double              visu_line_getValue                  (VisuLine *line);

Description

TODO

Details

VisuLine

typedef struct _VisuLine VisuLine;

Structure representing a curved line in 3D, opaque structure.


visu_line_draw ()

void                visu_line_draw                      (VisuLine *line,
                                                         float rgb[3]);

Call the OpenGL routine that will draw this line.

line :

a set of points forming a line.

rgb :

a colour.

Since 3.4


visu_line_project ()

float*              visu_line_project                   (VisuLine *line,
                                                         Plane *plane,
                                                         guint *nSeg);

Calculate the projection of each line vertex on plane.

line :

a VisuLine object.

plane :

a Plane object.

nSeg :

a location to store the size of projection.

Returns :

a newly allocated array of line segments. The size of this array is 4 * nSeg, holding the two plane coordiantes of the two vertices of a line.

Since 3.6


visu_line_newFromTriangles ()

VisuLine*           visu_line_newFromTriangles          (float **data,
                                                         guint nTriangles,
                                                         double isoValue);

Create on the fly an isoline from a given set of triangles. If the lines are created, isoline will be allocated and should be freed with visu_line_free() after use.

data :

the lines to be computed ;

nTriangles :

the surface to compute isoline from ;

isoValue :

the value of the computed isoline.

Returns :

the newly allocated VisuLine or NULL.

Since 3.6


visu_line_free ()

void                visu_line_free                      (VisuLine *line);

Free the line object.

line :

a set of lines.

Since 3.4


visu_line_getValue ()

double              visu_line_getValue                  (VisuLine *line);

Lines are usually created as iso-values line in a mesh.

line :

a VisuLine object.

Returns :

the value associated to the line.

Since 3.6