[CS:S]The calculation of the normals to the surfaces

tonline_kms65 · **Author**

TR_GetPlaneNormal
This function returns the values of what type? Cos, Radians, or something else? For example, a value of 1.000000 is perpendicular (90 degrees)

In the video, the blue ray shows the vector of measurement values output at the bottom of the screen in the center.

klippy · 07-17-2017 , 05:51 Re: [CS:S]The calculation of the normals to the surfaces

Normals are unit vectors.

tonline_kms65 · *Last edited by tonline_kms65; 07-17-2017 at 07:06.*

Quote:

Originally Posted by KliPPy

Normals are unit vectors.

Normalized? ie = 1?

I need to get the angle of the triangle surface

Code:


  TR_TraceRayFilter(f_pos, Float:{90.0, 0.0, 0.0}, MASK_SOLID, RayType_Infinite, _TraceFilter, ent);
  if (TR_DidHit(INVALID_HANDLE)){
  TR_GetEndPosition(f_ground);  
  TR_GetPlaneNormal(INVALID_HANDLE, f_norm);    //                                    
  GetVectorAngles(f_norm, f_angles);         //Here convert the vector to an angle.

GetVectorAngles Function

Returns angles from a vector.

void GetVectorAngles(const float vec[3], float angle[3])
Parameters

const float[3] vec
Vector.

float[3] angle
Angle buffer.

This angle is radians? Or the cosine of the angle? Or something else?

klippy · *Last edited by klippy; 07-17-2017 at 07:20.*

I don't code at all for Source games, but my general knowledge tells me it's probably an axis-angle in degrees. Print out the result and see for yourself.