Method DrawGroupDir

engine/Poseidon/UI/InGame/InGameUIDraw.cpp:1609–1676

}

void InGameUI::DrawGroupDir(const Camera& camera, AIGroup* grp)
{
    if (!grp)
    {
        return;
    }

    float age = Glob.uiTime - _lastGroupDirTime;
    if (age >= groupDirDimEndTime)
    {
        return;
    }

    float alpha = 1.0;
    if (age > groupDirDimStartTime)
    {
        alpha = (groupDirDimEndTime - age) / (groupDirDimEndTime - groupDirDimStartTime);
    }

    PackedColor bgColorA = PackedColorRGB(bgColor, toIntFloor(bgColor.A8() * alpha));
    PackedColor ftColorA = PackedColorRGB(ftColor, toIntFloor(ftColor.A8() * alpha));

    const int w = GLOB_ENGINE->Width2D();
    const int h = GLOB_ENGINE->Height2D();

    Texture* corner = GLOB_SCENE->Preloaded(Corner);
    DrawFrame(corner, bgColorA, Rect2DPixel(gdX * w, gdY * h, gdW * w, gdH * h));

    Matrix4Val camInvTransform = camera.GetInvTransform();
    Vector3 dir(VRotate, camInvTransform, grp->MainSubgroup()->GetFormationDirection());
    dir[0] = -dir[0];

    Matrix4 mrot(MZero);
    Matrix4 mtrans1 = Matrix4(MTranslation, Vector3(-0.5, 0, -0.5));
    Matrix4 mtrans2 = Matrix4(MTranslation, Vector3(0.5, 0, 0.5));

    Draw2DPars pars;
    pars.spec = NoZBuf | IsAlpha | IsAlphaFog | ClampU | ClampV;

    const float size = 1.1;

    Rect2DPixel rect(w * (gdX + gdW * 0.5 - gdW * size * 0.5), h * (gdY + gdH * 0.5 - gdH * size * 0.5), gdW * w * size,
                     gdH * h * size);

#define v000 VZero
#define v001 VForward
#define v100 VAside
#define v101 Vector3(1, 0, 1)

    mrot.SetUpAndDirection(-VUp, -dir);
    Matrix4 m = mtrans2 * mrot * mtrans1;
    Vector3 uv = m.FastTransform(v000);
    pars.uTR = uv[2];
    pars.vTR = uv[0];
    uv = m.FastTransform(v001);
    pars.uTL = uv[2];
    pars.vTL = uv[0];
    uv = m.FastTransform(v100);