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Clean up some old matrix code.

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This commit is contained in:
David Reid
2021-07-04 13:42:43 +10:00
parent a99eac9f22
commit cc6ef11076
1 changed files with 11 additions and 53 deletions
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research/miniaudio_engine.h
+11 -53
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@@ -11661,21 +11661,11 @@ MA_API ma_result ma_spatializer_process_pcm_frames(ma_spatializer* pSpatializer,
axisX = ma_vec3f_neg(axisX); axisX = ma_vec3f_neg(axisX);
} }
#if 0 /* Lookat. */
{ m[0][0] = axisX.x; m[1][0] = axisX.y; m[2][0] = axisX.z; m[3][0] = -ma_vec3f_dot(axisX, pListener->position);
m[0][0] = axisX.x; m[0][1] = axisY.x; m[0][2] = axisZ.x; m[0][3] = 0; m[0][1] = axisY.x; m[1][1] = axisY.y; m[2][1] = axisY.z; m[3][1] = -ma_vec3f_dot(axisY, pListener->position);
m[1][0] = axisX.y; m[1][1] = axisY.y; m[1][2] = axisZ.y; m[1][3] = 0; m[0][2] = -axisZ.x; m[1][2] = -axisZ.y; m[2][2] = -axisZ.z; m[3][2] = -ma_vec3f_dot(ma_vec3f_neg(axisZ), pListener->position);
m[2][0] = axisX.z; m[2][1] = axisY.z; m[2][2] = axisZ.z; m[2][3] = 0; m[0][3] = 0; m[1][3] = 0; m[2][3] = 0; m[3][3] = 1;
m[3][0] = -ma_vec3f_dot(axisX, pListener->position); m[3][1] = -ma_vec3f_dot(axisY, pListener->position); m[3][2] = -ma_vec3f_dot(axisZ, pListener->position); m[3][3] = 1;
}
#else
{
m[0][0] = axisX.x; m[1][0] = axisX.y; m[2][0] = axisX.z; m[3][0] = -ma_vec3f_dot(axisX, pListener->position);
m[0][1] = axisY.x; m[1][1] = axisY.y; m[2][1] = axisY.z; m[3][1] = -ma_vec3f_dot(axisY, pListener->position);
m[0][2] = -axisZ.x; m[1][2] = -axisZ.y; m[2][2] = -axisZ.z; m[3][2] = -ma_vec3f_dot(ma_vec3f_neg(axisZ), pListener->position);
m[0][3] = 0; m[1][3] = 0; m[2][3] = 0; m[3][3] = 1;
}
#endif
/* /*
Multiply the lookat matrix by the spatializer position to transform it to listener Multiply the lookat matrix by the spatializer position to transform it to listener
@@ -11683,44 +11673,18 @@ MA_API ma_result ma_spatializer_process_pcm_frames(ma_spatializer* pSpatializer,
origin which makes things simpler. origin which makes things simpler.
*/ */
v = pSpatializer->position; v = pSpatializer->position;
#if 0 relativePos.x = m[0][0] * v.x + m[1][0] * v.y + m[2][0] * v.z + m[3][0] * 1;
{ relativePos.y = m[0][1] * v.x + m[1][1] * v.y + m[2][1] * v.z + m[3][1] * 1;
relativePos.x = m[0][0] * v.x + m[0][1] * v.y + m[0][2] * v.z + m[0][3] * 1; relativePos.z = m[0][2] * v.x + m[1][2] * v.y + m[2][2] * v.z + m[3][2] * 1;
relativePos.y = m[1][0] * v.x + m[1][1] * v.y + m[1][2] * v.z + m[1][3] * 1;
relativePos.z = m[2][0] * v.x + m[2][1] * v.y + m[2][2] * v.z + m[2][3] * 1;
}
#else
{
relativePos.x = m[0][0] * v.x + m[1][0] * v.y + m[2][0] * v.z + m[3][0] * 1;
relativePos.y = m[0][1] * v.x + m[1][1] * v.y + m[2][1] * v.z + m[3][1] * 1;
relativePos.z = m[0][2] * v.x + m[1][2] * v.y + m[2][2] * v.z + m[3][2] * 1;
}
#endif
/* /*
The direction of the sound needs to also be transformed so that it's relative to the The direction of the sound needs to also be transformed so that it's relative to the
rotation of the listener. rotation of the listener.
*/ */
v = pSpatializer->direction; v = pSpatializer->direction;
#if 0 relativeDir.x = m[0][0] * v.x + m[1][0] * v.y + m[2][0] * v.z;
{ relativeDir.y = m[0][1] * v.x + m[1][1] * v.y + m[2][1] * v.z;
relativeDir.x = m[0][0] * v.x + m[0][1] * v.y + m[0][2] * v.z; relativeDir.z = m[0][2] * v.x + m[1][2] * v.y + m[2][2] * v.z;
relativeDir.y = m[1][0] * v.x + m[1][1] * v.y + m[1][2] * v.z;
relativeDir.z = m[2][0] * v.x + m[2][1] * v.y + m[2][2] * v.z;
}
#else
{
relativeDir.x = m[0][0] * v.x + m[1][0] * v.y + m[2][0] * v.z;
relativeDir.y = m[0][1] * v.x + m[1][1] * v.y + m[2][1] * v.z;
relativeDir.z = m[0][2] * v.x + m[1][2] * v.y + m[2][2] * v.z;
}
#endif
#if defined(MA_DEBUG_OUTPUT)
{
/*printf("dir.x = {%f, %f, %f}\n", relativeDir.x, relativeDir.y, relativeDir.z);*/
}
#endif
} }
distance = ma_vec3f_len(relativePos); distance = ma_vec3f_len(relativePos);
@@ -11933,12 +11897,6 @@ MA_API ma_result ma_spatializer_process_pcm_frames(ma_spatializer* pSpatializer,
} else { } else {
pSpatializer->dopplerPitch = 1; pSpatializer->dopplerPitch = 1;
} }
#if defined(MA_DEBUG_OUTPUT)
{
/*printf("dopplerPitch = %f; relativePos = {%f %f %f}\n", pSpatializer->dopplerPitch, relativePos.x, relativePos.y, relativePos.z);*/
}
#endif
} }
return MA_SUCCESS; return MA_SUCCESS;