public void DrawCompass(Vector3 worldDir)
{
// prepare all variables
Vector2 compArcOrigin = position + Vector2.down * bendRadius;
float angUiMin = ShapesMath.TAU * 0.25f - (width / 2) / bendRadius;
float angUiMax = ShapesMath.TAU * 0.25f + (width / 2) / bendRadius;
Vector2 dirWorld = new Vector2(worldDir.x, worldDir.z).normalized;
float lookAng = ShapesMath.DirToAng(dirWorld);
float angWorldMin = lookAng + fieldOfView / 2;
float angWorldMax = lookAng - fieldOfView / 2;
Vector2 labelPos = compArcOrigin + Vector2.up * (bendRadius) + lookAngLabelOffset * 0.1f;
string lookLabel = Mathf.RoundToInt(-lookAng * Mathf.Rad2Deg + 180f) + "°";
// prepare draw state
Draw.LineEndCaps = LineEndCap.Square;
Draw.Thickness = lineThickness;
// draw the horizontal line/arc of the compass
Draw.Arc(compArcOrigin, bendRadius, lineThickness, angUiMin, angUiMax, ArcEndCap.Round);
// draw the look angle label
Draw.FontSize = fontSizeLookLabel;
Draw.Text(labelPos, 0f, lookLabel, TextAlign.Center);
// triangle arrow
Vector2 trianglePos = compArcOrigin + Vector2.up * (bendRadius + 0.01f);
Draw.RegularPolygon(trianglePos, 3, triangleNootSize, -ShapesMath.TAU / 4);
// draw ticks
int tickCount = (ticksPerQuarterTurn - 1) * 4;
for (int i = 0; i < tickCount; i++)
{
float t = i / ((float)tickCount);
float ang = ShapesMath.TAU * t;
bool cardinal = i % (tickCount / 4) == 0;
string label = null;
if (cardinal)
{
int angInt = Mathf.RoundToInt((1f - t) * 4);
label = directionLabels[angInt % 4];
}
float tCompass = ShapesMath.InverseLerpAngleRad(angWorldMax, angWorldMin, ang);
if (tCompass < 1f && tCompass > 0f)
{
DrawTick(ang, cardinal ? 0.8f : 0.5f, label);
}
}
void DrawTick(float worldAng, float size, string label = null)
{
float tCompass = ShapesMath.InverseLerpAngleRad(angWorldMax, angWorldMin, worldAng);
float uiAng = Mathf.Lerp(angUiMin, angUiMax, tCompass);
Vector2 uiDir = ShapesMath.AngToDir(uiAng);
Vector2 a = compArcOrigin + uiDir * bendRadius;
Vector2 b = compArcOrigin + uiDir * (bendRadius - size * tickSize);
float fade = Mathf.InverseLerp(0, tickEdgeFadeFraction, (1f - Mathf.Abs(tCompass * 2 - 1)));
Draw.Line(a, b, LineEndCap.None, new Color(1, 1, 1, fade));
if (label != null)
{
Draw.FontSize = fontSizeTickLabel;
Draw.Text(b - uiDir * tickLabelOffset, uiAng - ShapesMath.TAU / 4f, label, TextAlign.Center, new Color(1, 1, 1, fade));
}
}
}
