way to do if(x > x2) x = x2 with rotation?

Alright, so I got this walking code, and some collision detection, now the collision detection returns a Vector3f of the closest point on the triangle that the projected position is at (pos + move), so then I project my position again in the walking method/function and if the projected position's x is > the nearest point'x the projected position's x becomes the nearist point's x. same with their z points, but if I'm moving in a different direction from 0 degrees XZ how would I rotate the equation/condition?

Here is what I got so far, and it's not working, as I go through walls, and such.

``````Vector3f move = new Vector3f(0,0,0);
move.x = (float)-Math.cos(Math.toRadians(yaw));
move.z = (float)-Math.sin(Math.toRadians(yaw));

// System.out.println("slopeNormal.z: " + slopeNormal.z + "move.z: " + move.z);

move.normalise();
move.scale(movementSpeed * delta);

float horizontaldotproduct = move.x * slopeNormal.x + move.z * slopeNormal.z;
move.y = -horizontaldotproduct * slopeNormal.y;

Vector3f dest = colCheck(pos, move, model, drawDist,  movementSpeed, delta);
Vector3f projPos = new Vector3f(pos);
Vector3f.add(projPos, move, projPos);
if(projPos.x > 0 && dest.x > 0 && projPos.x < dest.x) projPos.x = dest.x;
else if(projPos.x < 0 && dest.x < 0 && projPos.x > dest.x) projPos.x = dest.x;
if(projPos.z > 0 && dest.z > 0 && projPos.z < dest.z) projPos.z = dest.z;
else if(projPos.z < 0 && dest.z < 0 && projPos.z > dest.z) projPos.z = dest.z;
pos = new Vector3f(projPos);
``````
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