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Matrix/vector refactor (#426)

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This commit is contained in:
Christian Semmler
2024-01-12 19:34:38 -05:00
committed by GitHub
parent eac096036a
commit d24f5db42f
41 changed files with 865 additions and 1365 deletions
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45
LEGO1/realtime/realtime.cpp
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@@ -1,45 +1,20 @@
#include "realtime.h"
#include <vec.h>
// FUNCTION: LEGO1 0x100a5b40
void CalcLocalTransform(
const Vector3Impl& p_posVec,
const Vector3Impl& p_dirVec,
const Vector3Impl& p_upVec,
Matrix4Impl& p_outMatrix
)
void CalcLocalTransform(const Vector3& p_posVec, const Vector3& p_dirVec, const Vector3& p_upVec, Matrix4& p_outMatrix)
{
float 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 float dirVec1Operation = (p_dirVec)[1] * (p_dirVec)[1];
double 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(z_axis, p_dirVec);
NORMVEC3(y_axis, p_upVec)
VXV3(x_axis, y_axis, z_axis);
// Exact same thing as pointed out by the above comment
{
const float axis2Operation = (x_axis)[2] * (x_axis)[2];
double 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));
}
NORMVEC3(x_axis, x_axis);
VXV3(y_axis, z_axis, x_axis);
// Again, the same thing
{
const float axis2Operation = (y_axis)[2] * (y_axis)[2];
double 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);
NORMVEC3(y_axis, y_axis);
SET4from3(p_outMatrix[0], x_axis, 0);
SET4from3(p_outMatrix[1], y_axis, 0);
SET4from3(p_outMatrix[2], z_axis, 0);
SET4from3(p_outMatrix[3], p_posVec, 1);
}