diff options
author | Campbell Barton <ideasman42@gmail.com> | 2011-02-06 14:17:22 +0300 |
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committer | Campbell Barton <ideasman42@gmail.com> | 2011-02-06 14:17:22 +0300 |
commit | d9aa3f66a65161f324148ecb68b847bbbebee235 (patch) | |
tree | 3705187b87c4743a3b5f7f7f5c54bf64ce665fd8 /source | |
parent | 1cdab667bc7abcac5adc73c743510fa9a0e0eac2 (diff) |
mathutils.Matrix.Scale(factor, size, axis)
- 'axis' arg was not coerced from a tuple like other args now do.
- 'axis' arg was being modified in-place (VERY BAD).
- also made new function matrix_3x3_as_4x4().
Diffstat (limited to 'source')
-rw-r--r-- | source/blender/python/generic/mathutils_matrix.c | 114 |
1 files changed, 47 insertions, 67 deletions
diff --git a/source/blender/python/generic/mathutils_matrix.c b/source/blender/python/generic/mathutils_matrix.c index 69a3a9d63fa..ac30ddcf7f9 100644 --- a/source/blender/python/generic/mathutils_matrix.c +++ b/source/blender/python/generic/mathutils_matrix.c @@ -45,7 +45,6 @@ static PyObject *Matrix_copy(MatrixObject *self); - static int Matrix_ass_slice(MatrixObject *self, int begin, int end, PyObject *value); /* matrix vector callbacks */ @@ -162,9 +161,21 @@ static PyObject *Matrix_new(PyTypeObject *type, PyObject *args, PyObject *kwds) return NULL; } +/* when a matrix is 4x4 size but initialized as a 3x3, re-assign values for 4x4 */ +static void matrix_3x3_as_4x4(float mat[16]) +{ + mat[10] = mat[8]; + mat[9] = mat[7]; + mat[8] = mat[6]; + mat[7] = 0.0f; + mat[6] = mat[5]; + mat[5] = mat[4]; + mat[4] = mat[3]; + mat[3] = 0.0f; +} + /*-----------------------CLASS-METHODS----------------------------*/ -//----------------------------------mathutils.RotationMatrix() ---------- //mat is a 1D array of floats - row[0][0],row[0][1], row[1][0], etc. static char C_Matrix_Rotation_doc[] = ".. classmethod:: Rotation(angle, size, axis)\n" @@ -266,15 +277,7 @@ static PyObject *C_Matrix_Rotation(PyObject *cls, PyObject *args) } if(matSize == 4) { - //resize matrix - mat[10] = mat[8]; - mat[9] = mat[7]; - mat[8] = mat[6]; - mat[7] = 0.0f; - mat[6] = mat[5]; - mat[5] = mat[4]; - mat[4] = mat[3]; - mat[3] = 0.0f; + matrix_3x3_as_4x4(mat); } //pass to matrix creation return newMatrixObject(mat, matSize, matSize, Py_NEW, (PyTypeObject *)cls); @@ -321,28 +324,26 @@ static char C_Matrix_Scale_doc[] = ; static PyObject *C_Matrix_Scale(PyObject *cls, PyObject *args) { - VectorObject *vec = NULL; - float norm = 0.0f, factor; - int matSize, x; + PyObject *vec= NULL; + int vec_size; + float tvec[3]; + float factor; + int matSize; float mat[16] = {0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f}; - if(!PyArg_ParseTuple(args, "fi|O!:Matrix.Scale", &factor, &matSize, &vector_Type, &vec)) { + if(!PyArg_ParseTuple(args, "fi|O!:Matrix.Scale", &factor, &matSize, &vec)) { return NULL; } if(matSize != 2 && matSize != 3 && matSize != 4) { - PyErr_SetString(PyExc_AttributeError, "mathutils.Matrix.Scale(): can only return a 2x2 3x3 or 4x4 matrix"); + PyErr_SetString(PyExc_AttributeError, "Matrix.Scale(): can only return a 2x2 3x3 or 4x4 matrix"); return NULL; } if(vec) { - if(vec->size > 2 && matSize == 2) { - PyErr_SetString(PyExc_AttributeError, "mathutils.Matrix.Scale(): 2D vectors when scaling in 2D required"); + vec_size= (matSize == 2 ? 2 : 3); + if(mathutils_array_parse(tvec, vec_size, vec_size, vec, "Matrix.Scale(factor, size, axis), invalid 'axis' arg") == -1) { return NULL; } - - if(!BaseMath_ReadCallback(vec)) - return NULL; - } if(vec == NULL) { //scaling along axis if(matSize == 2) { @@ -353,42 +354,37 @@ static PyObject *C_Matrix_Scale(PyObject *cls, PyObject *args) mat[4] = factor; mat[8] = factor; } - } else { //scaling in arbitrary direction + } + else { //scaling in arbitrary direction //normalize arbitrary axis - for(x = 0; x < vec->size; x++) { - norm += vec->vec[x] * vec->vec[x]; + float norm = 0.0f; + int x; + for(x = 0; x < vec_size; x++) { + norm += tvec[x] * tvec[x]; } norm = (float) sqrt(norm); - for(x = 0; x < vec->size; x++) { - vec->vec[x] /= norm; + for(x = 0; x < vec_size; x++) { + tvec[x] /= norm; } if(matSize == 2) { - mat[0] = 1 +((factor - 1) *(vec->vec[0] * vec->vec[0])); - mat[1] =((factor - 1) *(vec->vec[0] * vec->vec[1])); - mat[2] =((factor - 1) *(vec->vec[0] * vec->vec[1])); - mat[3] = 1 + ((factor - 1) *(vec->vec[1] * vec->vec[1])); + mat[0] = 1 + ((factor - 1) *(tvec[0] * tvec[0])); + mat[1] = ((factor - 1) *(tvec[0] * tvec[1])); + mat[2] = ((factor - 1) *(tvec[0] * tvec[1])); + mat[3] = 1 + ((factor - 1) *(tvec[1] * tvec[1])); } else { - mat[0] = 1 + ((factor - 1) *(vec->vec[0] * vec->vec[0])); - mat[1] =((factor - 1) *(vec->vec[0] * vec->vec[1])); - mat[2] =((factor - 1) *(vec->vec[0] * vec->vec[2])); - mat[3] =((factor - 1) *(vec->vec[0] * vec->vec[1])); - mat[4] = 1 + ((factor - 1) *(vec->vec[1] * vec->vec[1])); - mat[5] =((factor - 1) *(vec->vec[1] * vec->vec[2])); - mat[6] =((factor - 1) *(vec->vec[0] * vec->vec[2])); - mat[7] =((factor - 1) *(vec->vec[1] * vec->vec[2])); - mat[8] = 1 + ((factor - 1) *(vec->vec[2] * vec->vec[2])); + mat[0] = 1 + ((factor - 1) *(tvec[0] * tvec[0])); + mat[1] = ((factor - 1) *(tvec[0] * tvec[1])); + mat[2] = ((factor - 1) *(tvec[0] * tvec[2])); + mat[3] = ((factor - 1) *(tvec[0] * tvec[1])); + mat[4] = 1 + ((factor - 1) *(tvec[1] * tvec[1])); + mat[5] = ((factor - 1) *(tvec[1] * tvec[2])); + mat[6] = ((factor - 1) *(tvec[0] * tvec[2])); + mat[7] = ((factor - 1) *(tvec[1] * tvec[2])); + mat[8] = 1 + ((factor - 1) *(tvec[2] * tvec[2])); } } if(matSize == 4) { - //resize matrix - mat[10] = mat[8]; - mat[9] = mat[7]; - mat[8] = mat[6]; - mat[7] = 0.0f; - mat[6] = mat[5]; - mat[5] = mat[4]; - mat[4] = mat[3]; - mat[3] = 0.0f; + matrix_3x3_as_4x4(mat); } //pass to matrix creation return newMatrixObject(mat, matSize, matSize, Py_NEW, (PyTypeObject *)cls); @@ -495,15 +491,7 @@ static PyObject *C_Matrix_OrthoProjection(PyObject *cls, PyObject *args) } } if(matSize == 4) { - //resize matrix - mat[10] = mat[8]; - mat[9] = mat[7]; - mat[8] = mat[6]; - mat[7] = 0.0f; - mat[6] = mat[5]; - mat[5] = mat[4]; - mat[4] = mat[3]; - mat[3] = 0.0f; + matrix_3x3_as_4x4(mat); } //pass to matrix creation return newMatrixObject(mat, matSize, matSize, Py_NEW, (PyTypeObject *)cls); @@ -594,15 +582,7 @@ static PyObject *C_Matrix_Shear(PyObject *cls, PyObject *args) } if(matSize == 4) { - //resize matrix - mat[10] = mat[8]; - mat[9] = mat[7]; - mat[8] = mat[6]; - mat[7] = 0.0f; - mat[6] = mat[5]; - mat[5] = mat[4]; - mat[4] = mat[3]; - mat[3] = 0.0f; + matrix_3x3_as_4x4(mat); } //pass to matrix creation return newMatrixObject(mat, matSize, matSize, Py_NEW, (PyTypeObject *)cls); |