[Kailo]

Goal: Spawn "models/weapons/w_eq_sensorgrenade.mdl" with correct rotaion for surface.

model

If just spawn with default rotation

without any rotation

My environment has next parameters:

PHP Code:

methodmap System
{
    public static int Place(const float pos[3], const float normal[3])
    {
        PrintToChatAll("{%.2f, %.2f, %.2f}", normal[0], normal[1], normal[2]);
        float origin[3], ang[3], vec[3];
        vec = normal; // this is for get angle by normal without rotation
        //GetVectorVectors(normal, vec, NULL_VECTOR); // this is for get angle by normal with rotation
        GetVectorAngles(vec, ang);
        
        origin = pos;
        // this is offsets for place model like red glass will in point of spawn
        // if not rotate it
        //origin[0] += 5.0;
        //origin[1] -= 1.0;
        //origin[2] -= 2.75;
        
        float posx[3], posy[3], posz[3];
        GetAngleVectors(ang, posx, posy, posz);
        ScaleVector(posx, 8.0);
        ScaleVector(posy, 8.0);
        ScaleVector(posz, 8.0);
        AddVectors(pos, posx, posx);
        AddVectors(pos, posy, posy);
        AddVectors(pos, posz, posz);
        DrawObject draw = DrawObject();
        draw.AddLine(pos, posx, {255, 0, 0, 255});
        draw.AddLine(pos, posy, {0, 255, 0, 255});
        draw.AddLine(pos, posz, {0, 0, 255, 255});
        
        return UTILS.CreatePropDynamic("models/weapons/w_eq_sensorgrenade.mdl", origin, ang);
    }
} 


If i get normal vector angels and set it for model

with normal rotation

Next i tried to get right vector for normal

with normal-right rotation

It's work ok for walls but not for floor.
Probably i needed to rotate it along the Z axis for 90 degrees,
Or maybe you know better way to do what i want.