C.10.5.1.3.10 Crosshairs

For the Compound Graphic Type (0070,0294) CROSSHAIR exactly one point shall be present inside the Graphic Data (0070,0022). This point is the origin of the CROSSHAIR (see Figure C.10.5-8).

Tick Alignment (0070,0274) and Tick Label Alignment (0070,0279) are also valid for the CROSSHAIR. Tick rendering is application dependent.

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Figure C.10.5-8 CROSSHAIR example showing BOTTOM tick labels alignment

Gap Length (0070,0261) defines the diameter of the circular area around the origin where the CROSSHAIR is not rendered. Since the dimension units of the Gap Length is DISPLAY, independent of the value of Compound Graphics Units (0070,0282), the length of the gap is not changed by zoom operations on the image performed by the application.

Diameter of Visibility (0070,0262) defines the diameter of the circular area around the origin where the CROSSHAIR is rendered. Since the dimension units of the Diameter of Visibility is DISPLAY, independent of the value of Compound Graphic Units (0070,0282), the size of the crosshair is not changed by zoom operations on the image performed by the application.

The value of the Tick Alignment (0070,0274) shall be CENTER.