I have some problems with vec_rotateaxis. Here is my code:


void attach_weapon(vertex_1,vertex_2,vertex_3,plus_pan,plus_tilt,plus_roll)
{ // Arm vorne / Arm hinten / Arm oben / seitlich / höhe / roll
proc_mode = PROC_LATE;
set (my,PASSABLE);

while (you)
{
vec_for_vertex (Temp_vec1,you,vertex_1);
vec_for_vertex (Temp_vec2,you,vertex_2);
vec_for_vertex (Temp_vec3,you,vertex_3);

vec_set (my.x, Temp_vec2);

vec_diff (Temp_vec4, Temp_vec2, Temp_vec1);
vec_diff (Temp_vec5, Temp_vec2, Temp_vec3);
vec_cross (Temp_vec6,Temp_vec5, Temp_vec4);

vec_to_angle (Temp_ang1, Temp_vec4);
vec_to_angle (Temp_ang2, Temp_vec5);
vec_to_angle (Temp_ang3, Temp_vec6);

Test0 = Temp_vec4.x;
Test1 = Temp_vec4.y;
Test2 = Temp_vec4.z;

vec_rotateaxis (Temp_vec4,Temp_vec6,60);

Test3 = Temp_vec4.x;
Test4 = Temp_vec4.y;
Test5 = Temp_vec4.z;

// more code here //

my.roll = Temp_ang3.tilt + plus_roll; my.pan = Temp_ang2.tilt + plus_pan;
my.tilt = Temp_ang1.tilt + plus_tilt; wait(1);
}
}

I want to rotate the Direction Temp_vec4 around the axis Temp_vec6. But after vec_rotateaxis the Direction Temp_vec4 is not right, it is change his Direction every frame, jumping from one dir. to another dir. If i erase all vec_to_angle, vec_rotateaxis make nothing, Test0 = Test3, Test1 = Test4, Test2 = Test5. Is this a bug or do i something wrong?

PS: with vec_rotate it works correct...

Did you go through the function when setting a breakpoint?

In case that gives you no idea what's happening:

Write an file_open_write instruction into the function which writes the value of each step into a file over several loops. Make the same with vec_rotate instead of vec_rotateaxis. Then compare the values and interpret the difference to get an idea what vec_rotateaxis is actually doing.

BTW, why do you need vec_rotateaxis when vec_rotate does the job? They are different functions, they have to give different results, and if one gives you the right results the other give the same results.

Thanks for the Answer. I want to rotate one Direction around another Direction, and that i have to do with vec_rotateaxis, vec_rotate isn`t the solution.

Will check my code with file_open_write...

EDIT: ok, i test it. If i don`t use vec_to angle, all is correct in my log, vec_rotateaxis do nothing. If i let the code as below, before vec_rotateaxis all is right. But after it Temp_vec4 is jumping around.

I try to figure out it also with draw_line3d, and i see the same result: If Temp_vec4 is jumping, he jump not in the right Direction (around axis Temp_vec6) ???

Please humor me and TRY this, if it helps I will explain. Insert this one line of code and try it with the log file ON.Any difference at all??

No, don`t work. But why vec_sub? Temp_vec6 is a Direction - Vector and not an angle...