Plan Position Indicator (PPI)¶

The Plan Position Indicator (PPI) provides a radar-style situational awareness display used on the SA screen as a camera overlay and on the DEF screen as the primary radar view.

Overview¶

The PlanPositionIndicator widget renders a circular radar display showing:

• Vehicle heading indicator and compass rose
• Range rings at configurable intervals
• Threat contacts as colour-coded markers
• Field of view arc
• Sight line indicator (optional)

Styles¶

The PPI supports 7 core rendering styles:

Style 0 - Classic¶

Traditional radar display with green phosphor look.

Style 1 - Simple¶

Enhanced visibility with prominent range rings.

Style 2 - Combat¶

High contrast display for combat operations.

Style 3 - Tactical¶

Tactical display mode with threat contacts.

Style 4 - Classic Tank¶

Classic tank display with outline rendering and sight line.

Style 5 - Classic Arrow¶

Classic arrow display with outline rendering and sight line.

Style 6 - Modern Tank¶

Modern tactical display with sight line.

Variations¶

Large Display¶

Extended size PPI for full-screen operation:

Classic Large¶

Classic style with an extended view area:

Wide FOV¶

Extended field of view for peripheral awareness:

Threat Variants¶

PPI styles that show threat contacts:

Simple with Threats	Classic with Threats	Modern with Threats

No Sight Variants¶

Display styles without the sight line overlay:

Classic Tank	Classic Arrow	Modern Tank

Usage¶

#include <PlanPositionIndicator.h>

// Create PPI widget
PlanPositionIndicator* ppi = new PlanPositionIndicator(parent);

// Set display style
ppi->setStyle(PPIStyle::Classic);

// Set range (meters)
ppi->setRange(5000);

// Add track
Track track;
track.id = "T001";
track.bearing = 45.0;
track.range = 2000.0;
track.hostility = Hostility::Hostile;
ppi->addTrack(track);

Related¶

• SA — PPI overlay on Situational Awareness screen
• DEF — Dedicated radar view on Defence screen
• Threats — Threat lifecycle and display integration
• Widgets Reference — Full widget reference