find XYZ from rotation + dist

[.:HyPeX:.]

hey guys, how can i calculate a XYZ position by having a rotation and distance?

For example, setting up the camera according to the rotation of my car in a place.

[12p]

https://wiki.multitheftauto.com/wiki/Ge ... ceRotation

This works for a two-dimensional point. It can be a good start.

[RenanPG]

addEventHandler("onClientRender", root, function() 
  
local height = 3 
local weight = 20 
  
local veh = getPedOccupiedVehicle(localPlayer) 
local x, y, z = getElementPosition(veh) 
local rx, ry, rz = getElementRotation(veh) 
local ax, ay = getPointFromDistanceRotation(x, y, weight, (-rz) - 180) 
  
  
setCameraMatrix(ax, ay , z+height, x, y, z) 
  
end) 
  
function getPointFromDistanceRotation(x, y, dist, angle) 
  
    local a = math.rad(90 - angle); 
    local dx = math.cos(a) * dist; 
    local dy = math.sin(a) * dist; 
    return x+dx, y+dy; 
  
end 

i didn't tested, adjust

Edited July 17, 2014 by Guest

[.:HyPeX:.]

Thanks!

[.:HyPeX:.]

Well, it is not taking my vehicle rotation into account, its taking it as if it always rz was 0.. wich is not.

  
local px,py,pz = getElementPosition(getPedOccupiedVehicle(getLocalPlayer())) 
local rx,ry,rz = getElementRotation(getPedOccupiedVehicle(getLocalPlayer())) 
local cx,cy = getPointFromDistanceRotation  (px,py,10,rz +75) 
local cx2,cy2 = getPointFromDistanceRotation(px,py,10,rz +90) 
local cx,cy = interpolateBetween(cx,cy,0,cx2,cy2,0,progress,"Linear") 
setCameraMatrix(cx,cy,pz+10,px,py,pz) 
  
  

[RenanPG]

Well, it is not taking my vehicle rotation into account, its taking it as if it always rz was 0.. wich is not.

  
local px,py,pz = getElementPosition(getPedOccupiedVehicle(getLocalPlayer())) 
local rx,ry,rz = getElementRotation(getPedOccupiedVehicle(getLocalPlayer())) 
local cx,cy = getPointFromDistanceRotation  (px,py,10,rz +75) 
local cx2,cy2 = getPointFromDistanceRotation(px,py,10,rz +90) 
local cx,cy = interpolateBetween(cx,cy,0,cx2,cy2,0,progress,"Linear") 
setCameraMatrix(cx,cy,pz+10,px,py,pz) 
  
  

  
function getPointFromDistanceRotation(x, y, dist, angle) 
  
    local a = math.rad(90 - angle); 
    local dx = math.cos(a) * dist; 
    local dy = math.sin(a) * dist; 
    return x+dx, y+dy; 
  
end 
  

Do you put this in your code?

[.:HyPeX:.]

Yes of course, it works, but the rotation taken into account was if like rz never existed (Or was always 0)

wich i do not understand is why, i output the RZ before those lines and it is perfect... but it is not considered somehow.

[.:HyPeX:.]

Bump, this is the complete function, what am i doing wrong?

  
local px,py,pz = getElementPosition(getPedOccupiedVehicle(getLocalPlayer())) 
local rx,ry,rz = getElementRotation(getPedOccupiedVehicle(getLocalPlayer())) 
local now = getTickCount() 
local start = start 
local finish = start + 5000 
local duration = 5000 
local elapsed = now - start 
local progress = elapsed / duration 
        if elapsed < 1000 then 
         
        local duration = 1000 
    local ending = start + duration 
    local elapsed = now - start 
    local progress = elapsed / duration 
    ---- 
    local alpha = interpolateBetween(0,0,0,255,0,0, progress, "Linear") 
    dxDrawImage(0,0,x,y,myRender,0,0,0, tocolor(255,255,255,alpha),true) 
     
        elseif elapsed >1000 and elapsed < 1500 then 
         
    local duration = 500 
    local start = start + 1000 
    local ending = start + duration 
    local elapsed = now - start 
    local progress = elapsed / duration 
    ---- 
    local rz1 = rz + 75 
    local cx,cy = getPointFromDistanceRotation  (px,py,10,rz1) 
    local rz2 = rz + 90 
    local cx2,cy2 = getPointFromDistanceRotation(px,py,10,rz2) 
    local cx,cy = interpolateBetween(cx,cy,0,cx2,cy2,0,progress,"Linear") 
    setCameraMatrix(cx,cy,pz+5,px,py,pz) 
     
    local alpha = interpolateBetween(255,0,0,0,0,0,progress,"Linear") 
    dxDrawImage(0,0,x,y,myRender,0,0,0, tocolor(255,255,255,alpha),true) 
         
        elseif elapsed > 1500 and elapsed < 2000 then 
         
    local duration = 500 
    local start = start + 1500 
    local ending = start + duration 
    local elapsed = now - start 
    local progress = elapsed / duration 
    ---- 
    local rz1 = rz + 90 
    local cx,cy = getPointFromDistanceRotation  (px,py,10,rz1) 
    local rz2 = rz + 105 
    local cx2,cy2 = getPointFromDistanceRotation(px,py,10,rz2) 
    local cx,cy = interpolateBetween(cx,cy,0,cx2,cy2,0,progress,"Linear") 
    setCameraMatrix(cx,cy,pz+5,px,py,pz) 
     
    local alpha = interpolateBetween(0,0,0,255,0,0,progress,"Linear") 
    dxDrawImage(0,0,x,y,myRender,0,0,0, tocolor(255,255,255,alpha),true) 
     
        elseif elapsed > 2000 and elapsed < 2500 then 
     
    local duration = 500 
    local start = start + 2000 
    local ending = start + duration 
    local elapsed = now - start 
    local progress = elapsed / duration 
    ---- 
    local rz1 = rz - 75 
    local cx,cy = getPointFromDistanceRotation  (px,py,10,rz1) 
    local rz2 = rz - 90 
    local cx2,cy2 = getPointFromDistanceRotation(px,py,10,rz2) 
    local cx,cy = interpolateBetween(cx,cy,0,cx2,cy2,0,progress,"Linear") 
    setCameraMatrix(cx,cy,pz+5,px,py,pz) 
     
    local alpha = interpolateBetween(255,0,0,0,0,0,progress,"Linear") 
    dxDrawImage(0,0,x,y,myRender,0,0,0, tocolor(255,255,255,alpha),true) 
     
        elseif elapsed > 2500 and elapsed < 3000 then 
         
    local duration = 500 
    local start = start + 2500 
    local ending = start + duration 
    local elapsed = now - start 
    local progress = elapsed / duration 
    ---- 
    local rz1 = rz - 90 
    local cx,cy = getPointFromDistanceRotation  (px,py,10,rz1) 
    local rz2 = rz - 105 
    local cx2,cy2 = getPointFromDistanceRotation(px,py,10,rz2) 
    local cx,cy = interpolateBetween(cx,cy,0,cx2,cy2,0,progress,"Linear") 
    setCameraMatrix(cx,cy,pz+5,px,py,pz) 
     
    local alpha = interpolateBetween(0,0,0,255,0,0,progress,"Linear") 
    dxDrawImage(0,0,x,y,myRender,0,0,0, tocolor(255,255,255,alpha),true) 
     
        elseif elapsed > 3000 and elapsed < 3500 then 
     
    local duration = 500 
    local start = start + 3000 
    local ending = start + duration 
    local elapsed = now - start 
    local progress = elapsed / duration 
    ---- 
    local rz1 = rz + 180 
    local cx,cy = getPointFromDistanceRotation  (px,py,10,rz1) 
    local alt = interpolateBetween(pz+10,0,0,pz+5,0,0,progress,"Linear") 
    setCameraMatrix(cx,cy,alt,px,py,pz) 
     
    local alpha = interpolateBetween(255,0,0,0,0,0,progress,"Linear") 
    dxDrawImage(0,0,x,y,myRender,0,0,0, tocolor(255,255,255,alpha),true) 
     
        elseif elapsed > 3500 and elapsed < 4000 then 
     
    local duration = 500 
    local start = start + 3500 
    local ending = start + duration 
    local elapsed = now - start 
    local progress = elapsed / duration 
    ---- 
    local rz1 = rz + 180 
    local cx,cy = getPointFromDistanceRotation  (px,py,10,rz1) 
    local alt = interpolateBetween(pz+5,0,0,pz,0,0,progress,"Linear") 
    setCameraMatrix(cx,cy,alt,px,py,pz) 
     
    local alpha = interpolateBetween(0,0,0,255,0,0,progress,"Linear") 
    dxDrawImage(0,0,x,y,myRender,0,0,0, tocolor(255,255,255,alpha),true) 
     
        elseif elapsed > 4000 and elapsed < 4500 then 
     
    local duration = 500 
    local start = start + 4000 
    local ending = start + duration 
    local elapsed = now - start 
    local progress = elapsed / duration 
    ---- 
    local cx,cy = getPointFromDistanceRotation  (px,py,15,rz) 
    local cx2,cy2 = getPointFromDistanceRotation(px,py,10,rz) 
    local alt,cx,cy = interpolateBetween(pz+10,cx,cy,pz+5,cx2,cy2,progress,"Linear") 
    setCameraMatrix(cx,cy,alt,px,py,pz) 
     
    local alpha = interpolateBetween(255,0,0,0,0,0,progress,"Linear") 
    dxDrawImage(0,0,x,y,myRender,0,0,0, tocolor(255,255,255,alpha),true) 
     
        elseif elapsed > 4500 and elapsed < 4950 then 
         
    local duration = 450 
    local start = start + 4500 
    local ending = start + duration 
    local elapsed = now - start 
    local progress = elapsed / duration 
    ---- 
    local cx,cy = getPointFromDistanceRotation  (px,py,10,rz) 
    local cx2,cy2 = getPointFromDistanceRotation(px,py,7,rz) 
    local alt,cx,cy = interpolateBetween(pz+5,cx,cy,pz+1.5,cx2,cy2,progress,"Linear") 
    setCameraMatrix(cx,cy,alt,px,py,pz) 
     
        elseif elapsed > 4950 then 
        setCameraTarget(getLocalPlayer()) 
        dxDrawText("GOGOGOGO", x*0.4, y*0.4, x*0.2,y*0.1, tocolor(180,0,0,255), 3, "default-bold") 
        dxDrawRectangle(0,y*0.4,x,y*0.05, tocolor(0,0,0,180)) 
        toggleAllControls(true) 
    end 

[monday]

  
function getPointFromDistanceRotation(x, y, dist, angle) 
  
    local a = math.rad(90 - angle); 
    local dx = math.cos(a) * dist; 
    local dy = math.sin(a) * dist; 
    return x+dx, y+dy; 
  
end 
  

I was struggling to make it work properly but changing this:

return x+dx, y+dy; 

into this:

return x+dx, y-dy; 

made it working properly for me