ART Protractor mark object.
| IG_ARTX_protractor_arcradius_get | Queries the radius of arc displayed in protractor. |
| IG_ARTX_protractor_arcradius_set | Updates the radius of arc displayed in protractor. |
| IG_ARTX_protractor_aspectratio_get | Queries attributes protractor aspect ratio. |
| IG_ARTX_protractor_aspectratio_set | Updates attributes of protractor aspect ratio. |
| IG_ARTX_protractor_bounds_get | Queries the bounding rectangle of annotation. |
| IG_ARTX_protractor_create | Creates a new instance of protractor annotation (IG_ARTX_MARK_PROTRACTOR). |
| IG_ARTX_protractor_endpoint_get | Queries annotation end point. |
| IG_ARTX_protractor_endpoint_set | Updates annotation end point position. |
| IG_ARTX_protractor_font_get | Queries annotation text font. |
| IG_ARTX_protractor_font_set | Updates annotation font. |
| IG_ARTX_protractor_headpoint_get | Queries arrow start point. |
| IG_ARTX_protractor_headpoint_set | Updates annotation start point position. |
| IG_ARTX_protractor_line_get | Queries attributes of line used to draw the annotation. |
| IG_ARTX_protractor_line_set | Sets attributes of line used to draw the annotation. |
| IG_ARTX_protractor_logfont_get | Queries annotation text font. |
| IG_ARTX_protractor_logfont_set | Updates button text font. |
| IG_ARTX_protractor_opacity_get | Queries the opacity value of annotation. |
| IG_ARTX_protractor_opacity_set | Sets the opacity value of annotation. |
| IG_ARTX_protractor_precision_get | Queries the precision of ruler length displayed. |
| IG_ARTX_protractor_precision_set | Updates the precision of protractor measurement displayed. |
| IG_ARTX_protractor_startpoint_get | Queries arrow start point. |
| IG_ARTX_protractor_startpoint_set | Updates arrow start point position. |