mirrors/isle
1
0
Fork 0
mirror of https://github.com/isledecomp/isle.git synced 2025-10-23 00:14:22 +00:00
Code Issues Packages Projects Releases Wiki Activity

implement/match CalcLocalTransform (#241)

Browse Source 
* implement/match CalcLocalTransform

* fix odd build error

* address feedback

move vec.h to thirdparty folder
update vec.h
move all realtime code to realtime folder
move calclocaltransform out of legoutil and into realtime
cast shift to MxS32
add additional unroll hack to CalcLocalTransform to prevent msvc entropy
This commit is contained in:
Ramen2X
2023-10-24 08:27:24 -04:00
committed by GitHub
parent 1ab29590ee
commit 74329d681b
9 changed files with 1150 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

41
LEGO1/realtime/realtime.cpp Normal file
View File

@@ -0,0 +1,41 @@
#include "realtime.h"
// OFFSET: LEGO1 0x100a5b40
void CalcLocalTransform(const MxVector3 &p_posVec, const MxVector3 &p_dirVec,
const MxVector3 &p_upVec, MxMatrix &p_outMatrix)
{
MxFloat x_axis[3], y_axis[3], z_axis[3];
// This is an unrolled version of the "NORMVEC3" macro,
// used here to apply a silly hack to get a 100% match
{
const MxFloat dirVec1Operation = (p_dirVec)[1] * (p_dirVec)[1];
MxDouble len = sqrt(((p_dirVec)[0] * (p_dirVec)[0] + dirVec1Operation + (p_dirVec)[2] * (p_dirVec)[2]));
((z_axis)[0] = (p_dirVec)[0] / (len), (z_axis)[1] = (p_dirVec)[1] / (len), (z_axis)[2] = (p_dirVec)[2] / (len));
}
NORMVEC3(y_axis, p_upVec)
VXV3(x_axis, y_axis, z_axis);
// Exact same thing as pointed out by the above comment
{
const MxFloat axis2Operation = (x_axis)[2] * (x_axis)[2];
MxDouble len = sqrt(((x_axis)[0] * (x_axis)[0] + axis2Operation + (x_axis)[1] * (x_axis)[1]));
((x_axis)[0] = (x_axis)[0] / (len), (x_axis)[1] = (x_axis)[1] / (len), (x_axis)[2] = (x_axis)[2] / (len));
}
VXV3(y_axis, z_axis, x_axis);
// Again, the same thing
{
const MxFloat axis2Operation = (y_axis)[2] * (y_axis)[2];
MxDouble len = sqrt(((y_axis)[0] * (y_axis)[0] + axis2Operation + (y_axis)[1] * (y_axis)[1]));
((y_axis)[0] = (y_axis)[0] / (len), (y_axis)[1] = (y_axis)[1] / (len), (y_axis)[2] = (y_axis)[2] / (len));
}
SET4from3(&p_outMatrix[0], x_axis, 0);
SET4from3(&p_outMatrix[4], y_axis, 0);
SET4from3(&p_outMatrix[8], z_axis, 0);
SET4from3(&p_outMatrix[12], p_posVec, 1);
}