Need help with vec calculations

ZASTRELIS · **Author**

Code:

// flOrigin - ent position
// beamend - end of beam
float angl1[3];
float angl2[3];
GetVectorAngles(flOrigin, angl1);
GetVectorAngles(beamend, angl2);

PrintToConsole(pArent, "========== iLight: %i ==========", pActivator);
PrintToConsole(pArent, "[0]: {%.2f,%.2f}, {%.2f,%.2f}", beamend[0], flOrigin[0], angl1[0], angl2[0]);
PrintToConsole(pArent, "[1]: {%.2f,%.2f}, {%.2f,%.2f}", beamend[1], flOrigin[1], angl1[1], angl2[1]);
PrintToConsole(pArent, "[2]: {%.2f,%.2f}, {%.2f,%.2f}", beamend[2], flOrigin[2], angl1[2], angl2[2]);

Quote:

========== iLight: 230 ==========
[0]: {-401.44,-550.31}, {351.61,325.25}
[1]: {-939.93,-1007.57}, {241.35,246.87}
[2]: {708.96,169.32}, {0.00,0.00}

wtf:
I use light_dynamic for lightning ent(mine)..

Code:

TeleportEntity(CreateEntityByName("light_dynamic"), flOrigin, NULL_VECTOR, NULL_VECTOR);

but I need little fix for its(light_dynamic) position, near 5-10 units from original mine position towards beam direction.
my brain is exploding when I tried to understand how I can make it when ent(mine) has some angle(such as on image)

backwards · *Last edited by backwards; 07-14-2018 at 08:39.*

This should do what you want but it's untested.

PHP Code:


			
float distance_from_origin = 10.0;
float direction[3], forwards[3], lightorigin[3]; 

for(int i=0; i < 3; i++) 
    direction[i] = beamend[i] - flOrigin[i];

GetVectorAngles(direction, direction);  
GetAngleVectors(direction, forwards, NULL_VECTOR, NULL_VECTOR);  

for(int i = 0;i < 3; i++)  
    lightorigin[i] = flOrigin[i] + (forwards[i] * distance_from_origin);

Depending on the model rotation the angl1 or angl2 may already be the forwards angle you require but getting the difference between the end and start point is just as simple.

ZASTRELIS · *Last edited by ZASTRELIS; 07-01-2018 at 07:50.*

Quote:

Originally Posted by 1337norway

Code:

...
for(int i = 0;i < 3; i++)  
    lightorigin[i] = flOrigin[i] + forwards[i] * distance_from_origin);

Code:

lightorigin[i] = flOrigin[i] + (forwards[i] * distance_from_origin);

Works great, thanks a lot.. bro.