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Diffstat (limited to 'my_functions.py')
| -rw-r--r-- | my_functions.py | 374 |
1 files changed, 0 insertions, 374 deletions
diff --git a/my_functions.py b/my_functions.py deleted file mode 100644 index 49dc87d..0000000 --- a/my_functions.py +++ /dev/null @@ -1,374 +0,0 @@ -''' -file that contains some functions that I don't -want to re-write on each individual .py file -''' - -import bpy, math, re -from mathutils import Matrix - - -################################################ -# show message on screen for errors or warnnings -# copied this code from a page I saw it in :) -################################################ -def show_message(message = "", title = "Message Box", icon = 'INFO'): -# - def draw(self, context): - self.layout.label(text=message) - - bpy.context.window_manager.popup_menu(draw, title = title, icon = icon) -# - - -####################################### -# calc_scale_matrix function -# function to build the scale matrix -# -# x_scale (float) --> scaling in X axis -# y_scale (float) --> scaling in Y axis -# z_scale (float) --> scaling in Z axis -####################################### -def calc_scale_matrix(x_scale, y_scale, z_scale): -# - scale_matrix = Matrix(( [x_scale, 0, 0, 0], - [0, y_scale, 0, 0], - [0, 0, z_scale, 0], - [0, 0, 0, 1] - )) - - return scale_matrix -# - - -################################################### -# calc_rotation_matrix function -# function to calculate the rotation matrix -# for a Extrinsic Euler XYZ system -# -# x_angle (float) --> rot angle in X axis (radians) -# y_angle (float) --> rot angle in Y axis (radians) -# z_angle (float) --> rot angle in > axis (radians) -################################################### -def calc_rotation_matrix(x_angle, y_angle, z_angle): -# - x_rot_mat = Matrix(([1, 0, 0, 0], - [0, math.cos(x_angle), -math.sin(x_angle), 0], - [0, math.sin(x_angle), math.cos(x_angle), 0], - [0, 0, 0, 1])) - - y_rot_mat = Matrix(([math.cos(y_angle), 0, math.sin(y_angle), 0], - [0, 1, 0, 0], - - [-math.sin(y_angle), 0, math.cos(y_angle), 0], - [0, 0, 0, 1])) - - z_rot_mat = Matrix(([math.cos(z_angle), -math.sin(z_angle), 0, 0], - [math.sin(z_angle), math.cos(z_angle), 0, 0], - [0, 0, 1, 0], - [0, 0, 0, 1])) - - return z_rot_mat * y_rot_mat * x_rot_mat -# - - -################################################# -# calc_translation_matrix function -# function to build the translation matrix -# -# x_translation (float) --> translation in X axis -# y_translation (float) --> translation in Y axis -# z_translation (float) --> translation in Z axis -################################################# -def calc_translation_matrix(x_translation, y_translation, z_translation): -# - translation_matrix = Matrix(( [1, 0, 0, x_translation], - [0, 1, 0, y_translation], - [0, 0, 1, z_translation], - [0, 0, 0, 1] - )) - - return translation_matrix -# - - - -############################################################## -# interpolate function -# used to find a value in an interval with the specified mode. -# So that it is clear that the values are points that have 2 -# coordinates I will treat the input as they are (x,y) points -# the function will either return m_x or m_y depending on -# which of the middle point values is provided to the function -# (set None to the variable going to be returned by the -# function). Only linear interpolation is supported for now. -# -# l_x (float) --> left point X axis component -# l_y (float) --> left point Y axis component -# r_x (float) --> right point X axis component -# r_y (float) --> right point Y axis component -# m_x (float) --> middle point X axis component -# m_y (float) --> middle point Y axis component -# interp_type (string) --> "linear" for linear interpolation -############################################################## -def interpolate(l_x, l_y, r_x, r_y, m_x, m_y, interp_type): -# - # variable to be returned - result = 0 - - ############################################## - # if right point does not exist (special case) - # return l_y as the interpolation result - if (r_x == None or r_y == None): - result = l_y - return result - - ############################### - # m_x is the one to be returned - if (m_x == None): - - # linear interpolation - if (interp_type == "linear"): - m_x = (((r_x - l_x) / (r_y - l_y)) * (m_y - r_y)) + r_x - result = m_x - - ############################### - # m_y is the one to be returned - if (m_y == None): - - # linear interpolation - if (interp_type == "linear"): - m_y = (((r_y - l_y) / (r_x - l_x)) * (m_x - r_x)) + r_y - result = m_y - - return result -# - - -#################################################################### -# find_left_right function -# find the values and positions of the elements at the left and the -# right of the element in position pos on the anim_array -# elements will be used in the interpolate() function later -# -# anim_array (array of floats) --> anim property frame array its -# length must the animation length -# pos (int) --> position of the animation property value to be -# later interpolated in the anim_array array -#################################################################### -def find_left_right(anim_array, pos): -# - ############################# - # create left/right variables - l_val = 0 - l_val_pos = 0 - r_val = 0 - r_val_pos = 0 - - ##################################### - # find near left value (has to exist) - # read array from right to left - for i in range(len(anim_array), -1, -1): - # - # skip elements at the right of - # pos in anim_array - if (i >= pos): - continue - - # left value is found - if (anim_array[i] != None): - l_val = anim_array[i] - l_val_pos = i - break - # - - ############## - # special case - ############## - # if pos is the last element position on - # the array r_val and r_val_pos do not exist - if (pos == (len(anim_array) - 1)): - return [l_val_pos, l_val, None, None] - - ######################################### - # find near right value (might not exist) - # read array from left to right - for i in range(len(anim_array)): - # - # skip elements at the left of - # pos in anim_array - if (i <= pos): - continue - - # right value is found - if (anim_array[i] != None): - r_val = anim_array[i] - r_val_pos = i - break - - # if no value is found at the end of - # the anim_array r_val and r_val_pos do not exist - # (value does not change between the left value - # found and the end of the animation) - if (i == (len(anim_array) - 1)): - return [l_val_pos, l_val, None, None] - # - - # if all values are found, return them - return [l_val_pos, l_val, r_val_pos, r_val] -# - - -####################################################### -# convert_angle_to_180 function -# function used by the convert_anim_rot_to_180 function -# to convert a single angle in its representation on -# the -180/+180 degree range (angles passed to the -# function that are already in this range will be -# returned without conversion) -# -# angle (float) --> angle to convert to the -180/+180 -# degree range (angle is expected to -# be in degrees) -####################################################### -def convert_angle_to_180(angle): -# - # check if the angle really needs to be processed - # i.e. is already inside the -180/+180 degree range - if (angle >= -180 and angle <= 180): - return angle - - # convert it otherwise - - # check if it is positive or negative - # and set the opposite direction of the angle - # if the angle is > 0 then its mesurement is clockwise (opposite is counter-clockwise) - # if the angle is < 0 then its mesurement is counter-clockwise (opposite is clockwise) - if (angle > 0): - opposite_spin_dir = -1 - else: # it is negative - opposite_spin_dir = 1 - - # decrease the angle by 360 degrees until it - # is in the -180/+180 degree interval - while (abs(angle) > 180): - angle = angle + (opposite_spin_dir * 360) - - return angle -# - - -############################################################### -# convert_anim_rot_to_180 function -# used to re-calculate a rotation animation on an axis -# so that angles used lay in between -180/180 degrees -# done to avoid rotation animation data loss when extracting -# said angles from a transformation matrix -# this function calls the convert_angle_to_180() function -# at the end of the function csv_keyframe_numbers is updated -# with the new frames to be injected into the animation -# -# example: -# -# Original keyframes: -# Frame 0 Frame 21 (2 keyframes) -# 0º 360º -# -# Processed keyframes: -# Frame 0 Frame 10 Frame 11 Frame 21 (4 keyframes) -# 0º 171.4º -171.5º 0º -# -# rot_array (array of floats) --> bone rotation animation data -# for a single axis -# csv_keyframe_numbers (array of ints) --> original keyframes -# of the animation -# -# Note: function will have problems interpreting keyframes with -# high rotation diferences if the number of frames in -# between said keyframes in lower than 2 times the spins -# done in between those keyframe angles (thinking a fix) -############################################################### -def convert_rot_anim_to_180(rot_array, csv_keyframe_numbers): -# - # temp rot array to store calculated values and keyframe position - rot_array_cp = [[], []] - - # find the frames in which rot_array has values defined - rot_array_kf = [] - for i in range(len(rot_array)): - if (rot_array[i] != None): - rot_array_kf.append(i) - - ########################################################################### - # loop through each consecutive pair of keyframes of the rot_array_kf array - for i in range(len(rot_array_kf) - 1): - # - # get left/right keyframe values and positions - l_kf_pos = rot_array_kf[i] - l_kf_val = rot_array[l_kf_pos] - r_kf_pos = rot_array_kf[i + 1] - r_kf_val = rot_array[r_kf_pos] - - # append l_kf_val to rot_array_cp (converted) - rot_array_cp[0].append(l_kf_pos) - rot_array_cp[1].append(convert_angle_to_180(l_kf_val)) - - # get the rotation direction - if (r_kf_val > l_kf_val): # clockwise - rot_direction = 1 - else: # counter-clockwise - rot_direction = -1 - - ############################################################## - # advance -180/+180 (depending on the rotation direction) - # and generate the middle keyframe values - # angle is fixed to the l_kf_val's closest 360 degree multiple - angle_val = l_kf_val - convert_angle_to_180(l_kf_val) - while (abs(r_kf_val - angle_val) > 180): - # - angle_val = angle_val + (rot_direction * 180) - - # find the frame (float) in which this value exists - angle_pos = interpolate(l_kf_pos, l_kf_val, r_kf_pos, r_kf_val, None, angle_val, "linear") - - ############################################ - # find the 2 frames (integer) that are lower - # and upper limits of this angle_pos - lower_frame = int(angle_pos) - upper_frame = int(angle_pos + 1) - - ############################################################### - # interpolate to find the values on lower_frame and upper_frame - lower_frame_value = convert_angle_to_180(interpolate(l_kf_pos, l_kf_val, r_kf_pos, r_kf_val, lower_frame, None, "linear")) - upper_frame_value = convert_angle_to_180(interpolate(l_kf_pos, l_kf_val, r_kf_pos, r_kf_val, upper_frame, None, "linear")) - - ################################ - # append results to rot_array_cp - - # keyframes - rot_array_cp[0].append(lower_frame) - rot_array_cp[0].append(upper_frame) - # values - rot_array_cp[1].append(lower_frame_value) - rot_array_cp[1].append(upper_frame_value) - # - # - - ########################################## - # add the new keyframe values to rot_array - # on their respective frame position - for i in range(len(rot_array_cp[0])): - rot_array[rot_array_cp[0][i]] = rot_array_cp[1][i] - - ####################################################### - # update the keyframes on csv_keyframe_numbers to store - # the calculated keyframes numbers from rot_array_cp[0] - # append those at the end of csv_keyframe_numbers - for i in range(len(rot_array_cp[0])): - value_found = False - for j in range(len(csv_keyframe_numbers)): - if (rot_array_cp[0][i] == csv_keyframe_numbers[j]): - value_found = True - break - if (value_found == False): - csv_keyframe_numbers.append(rot_array_cp[0][i]) -# |