Python Matrix.copy方法代码示例

# 需要导入模块: from mathutils import Matrix [as 别名]
# 或者: from mathutils.Matrix import copy [as 别名]
def getmat(bone, active, context, ignoreparent):
    '''Helper function for visual transform copy,
       gets the active transform in bone space
    '''
    data_bone = context.active_object.data.bones[bone.name]
    #all matrices are in armature space unless commented otherwise
    otherloc = active.matrix  # final 4x4 mat of target, location.
    bonemat_local = Matrix(data_bone.matrix_local)  # self rest matrix
    if data_bone.parent:
        parentposemat = Matrix(
           context.active_object.pose.bones[data_bone.parent.name].matrix)
        parentbonemat = Matrix(data_bone.parent.matrix_local)
    else:
        parentposemat = bonemat_local.copy()
        parentbonemat = bonemat_local.copy()

        # FIXME! why copy from the parent if setting identity ?, Campbell
        parentposemat.identity()
        parentbonemat.identity()

    if parentbonemat == parentposemat or ignoreparent:
        newmat = bonemat_local.inverted() * otherloc
    else:
        bonemat = parentbonemat.inverted() * bonemat_local

        newmat = bonemat.inverted() * parentposemat.inverted() * otherloc
    return newmat

# 需要导入模块: from mathutils import Matrix [as 别名]
# 或者: from mathutils.Matrix import copy [as 别名]
    def getWorld(self):
        t = Vector(self.translation).to_4d()
        mr = Matrix()
        for row in range(3):
            mr[row][0:3] = self.rotation[row]

        mr.transpose() # = Inverse rotation
        
        p = -(mr * t) # Camera position in world coordinates
        p[3] = 1.0

        m = mr.copy()
        m.col[3] = p # Set translation to camera position
        return m

# 需要导入模块: from mathutils import Matrix [as 别名]
# 或者: from mathutils.Matrix import copy [as 别名]
    def test_matrix_inverse_safe(self):
        mat = Matrix(((1, 4, 0, -1),
                      (2, -1, 0, -2),
                      (0, 3, 0, 3),
                      (-2, 9, 0, 0)))

        # Warning, if we change epsilon in py api we have to update this!!!
        epsilon = 1e-8
        inv_mat_safe = mat.copy()
        inv_mat_safe[0][0] += epsilon
        inv_mat_safe[1][1] += epsilon
        inv_mat_safe[2][2] += epsilon
        inv_mat_safe[3][3] += epsilon
        inv_mat_safe.invert()
        '''
        inv_mat_safe = Matrix(((1.0, -0.5, 0.0, -0.5),
                               (0.222222, -0.111111, -0.0, 0.0),
                               (-333333344.0, 316666656.0, 100000000.0,  150000000.0),
                               (0.888888, -0.9444444, 0.0, -0.5)))
        '''

        self.assertEqual(mat.inverted_safe(), inv_mat_safe)

# 需要导入模块: from mathutils import Matrix [as 别名]
# 或者: from mathutils.Matrix import copy [as 别名]
class Line(Projection):
    """
        2d Line
        Internally stored as p: origin and v:size and direction
        moving p will move both ends of line
        moving p0 or p1 move only one end of line
            p1
            ^
            | v
            p0 == p
    """
    def __init__(self, p=None, v=None, p0=None, p1=None):
        """
            Init by either
            p: Vector or tuple origin
            v: Vector or tuple size and direction
            or
            p0: Vector or tuple 1 point location
            p1: Vector or tuple 2 point location
            Will convert any into Vector 2d
            both optionnals
        """
        Projection.__init__(self)
        if p is not None and v is not None:
            self.p = Vector(p).to_2d()
            self.v = Vector(v).to_2d()
        elif p0 is not None and p1 is not None:
            self.p = Vector(p0).to_2d()
            self.v = Vector(p1).to_2d() - self.p
        else:
            self.p = Vector((0, 0))
            self.v = Vector((0, 0))
        self.line = None

    @property
    def copy(self):
        return Line(self.p.copy(), self.v.copy())

    @property
    def p0(self):
        return self.p

    @property
    def p1(self):
        return self.p + self.v

    @p0.setter
    def p0(self, p0):
        """
            Note: setting p0
            move p0 only
        """
        p1 = self.p1
        self.p = Vector(p0).to_2d()
        self.v = p1 - p0

    @p1.setter
    def p1(self, p1):
        """
            Note: setting p1
            move p1 only
        """
        self.v = Vector(p1).to_2d() - self.p

    @property
    def length(self):
        """
            3d length
        """
        return self.v.length

    @property
    def angle(self):
        """
            2d angle on xy plane
        """
        return atan2(self.v.y, self.v.x)

    @property
    def a0(self):
        return self.angle

    @property
    def angle_normal(self):
        """
            2d angle of perpendicular
            lie on the right side
            p1
            |--x
            p0
        """
        return atan2(-self.v.x, self.v.y)

    @property
    def reversed(self):
        return Line(self.p, -self.v)

    @property
    def oposite(self):
        return Line(self.p + self.v, -self.v)
#.........这里部分代码省略.........