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Fix BGE bug #6054: Camera actuator crashes Blender. The crash occurs when min,max << height (bad practice anyway).

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This commit is contained in:
Benoit Bolsee
2008-05-07 22:32:45 +00:00
parent 2a8caaa6a0
commit 44cdc480de
1 changed files with 13 additions and 2 deletions
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15
source/gameengine/Ketsji/KX_CameraActuator.cpp
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@@ -155,14 +155,25 @@ static void Kx_VecUpMat3(float *vec, float mat[][3], short axis)
mat[coz][0]= vec[0];
mat[coz][1]= vec[1];
mat[coz][2]= vec[2];
Kx_Normalize((float *)mat[coz]);
if (Kx_Normalize((float *)mat[coz]) == 0.f) {
/* this is a very abnormal situation: the camera has reach the object center exactly
We will choose a completely arbitrary direction */
mat[coz][0] = 1.0f;
mat[coz][1] = 0.0f;
mat[coz][2] = 0.0f;
}
inp= mat[coz][2];
mat[coy][0]= - inp*mat[coz][0];
mat[coy][1]= - inp*mat[coz][1];
mat[coy][2]= 1.0 - inp*mat[coz][2];
Kx_Normalize((float *)mat[coy]);
if (Kx_Normalize((float *)mat[coy]) == 0.f) {
/* the camera is vertical, chose the y axis arbitrary */
mat[coy][0] = 0.f;
mat[coy][1] = 1.f;
mat[coy][2] = 0.f;
}
Kx_Crossf(mat[cox], mat[coy], mat[coz]);