def gen_layer_translate(lottie, layer):
"""
Help generate transform properties of translate layer
Args:
lottie (dict) : Transform properties in lottie format
layer (common.Layer.Layer) : Transform properties in Synfig format
Returns:
(None)
"""
origin = layer.get_param("origin")
origin.animate("vector")
pos = origin
st = "<param name='anchor'><vector><x>0.00</x><y>0.00</y></vector></param>"
anchor = etree.fromstring(st)
anchor = Param(anchor, layer)
anchor.animate("vector")
anchor.add_offset()
if settings.INSIDE_PRECOMP:
pos.add_offset()
anchor.animate("vector", True)
pos.animate("vector", True)
gen_helpers_transform(lottie, pos, anchor)
def animate_tangents(tangent, window):
"""
Animates the radial composite and updates the window of frame if radial
composite's parameters are already animated
Also generate the Lottie path and stores in radial_composite
Args:
tangent (common.Param.Param) : Synfig format radial composite's parent-> stores radius and angle
window (dict) : max and min frame of overall animations stored in this
Returns:
(None)
"""
for child in tangent[0]:
# Assuming tangent[0] is always radial_composite
if child.tag == "radius":
radius = Param(child, tangent[0])
elif child.tag == "theta":
theta = Param(child, tangent[0])
radius.update_frame_window(window)
theta.update_frame_window(window)
radius.animate("real")
theta.animate("region_angle")
tangent.add_subparam("radius", radius)
tangent.add_subparam("theta", theta)
def gen_layer_group(lottie, layer, idx):
"""
Will generate a pre composition but has small differences than pre-comp layer used in
layers/preComp.py
This function will be used for group layer as well as switch group layer
Args:
lottie (dict) : Lottie format layer will be stored here
layer (common.Layer.Layer) : Synfig format group/switch layer
idx (int) : Index of the layer
Returns:
(None)
"""
lottie["ddd"] = settings.DEFAULT_3D
lottie["ind"] = idx
lottie["ty"] = settings.LAYER_PRECOMP_TYPE
lottie["sr"] = settings.LAYER_DEFAULT_STRETCH
lottie["ks"] = {} # Transform properties to be filled
lottie["nm"] = layer.get_description()
index = Count()
# Extract parameters
canvas = Canvas(layer.get_param("canvas"))
origin = layer.get_param("origin")
opacity = layer.get_param("amount")
outline_grow = layer.get_param("outline_grow")
time_offset = layer.get_param("time_offset")
time_dilation = layer.get_param("time_dilation")
transformation = layer.get_param("transformation")
transform = transformation[0]
try_par = Param(transform, Param(transformation.get(), layer))
for child in transform:
if child.tag == "scale":
scale = Param(child, try_par)
elif child.tag == "offset":
pos = Param(child, try_par)
elif child.tag == "angle":
angle = Param(child, try_par)
elif child.tag == "skew_angle":
skew = Param(child, try_par)
outline_grow.animate("real")
origin.animate("vector")
anchor = origin
anchor.add_offset()
angle.animate("rotate_layer_angle")
pos.animate("vector")
if settings.INSIDE_PRECOMP:
pos.add_offset()
scale.animate("group_layer_scale")
# Generating animation for skew
skew.animate("rotate_layer_angle")
# Animating opacity
opacity.animate("opacity")
# Reset the animations after adding offset
anchor.animate("vector", True)
pos.animate("vector", True)
# Generate the transform properties here
gen_helpers_transform(lottie["ks"], pos, anchor, scale, angle, opacity,
skew)
# Store previous states, to be recovered at the end of group layer
prev_state = settings.INSIDE_PRECOMP
settings.OUTLINE_GROW.append(
outline_grow
) # Storing the outline grow in settings, will be used inside child outlines
settings.INSIDE_PRECOMP = True
settings.lottie_format["assets"].append({})
asset = add_precomp_asset(settings.lottie_format["assets"][-1], canvas,
canvas.get_num_layers())
lottie["refId"] = asset
lottie["w"] = settings.lottie_format[
"w"] + settings.ADDITIONAL_PRECOMP_WIDTH # Experimental increase in width and height of precomposition
lottie[
"h"] = settings.lottie_format["h"] + settings.ADDITIONAL_PRECOMP_HEIGHT
lottie["ao"] = settings.LAYER_DEFAULT_AUTO_ORIENT
lottie["ip"] = settings.lottie_format["ip"]
lottie["op"] = settings.lottie_format["op"]
lottie["st"] = 0 # Don't know yet
get_blend(lottie, layer)
# Time offset and speed
lottie["tm"] = {}
gen_time_remap(lottie["tm"], time_offset, time_dilation, index.inc())
# Change opacity of layers for switch-group layers
if layer.get_type() == "switch":
change_opacity_switch(layer, lottie)
# Change opacity of layers for group layers
elif layer.get_type() == "group":
change_opacity_group(layer, lottie)
# Return to previous state, when we go outside the group layer
settings.INSIDE_PRECOMP = prev_state
settings.OUTLINE_GROW.pop()
def gen_dynamic_list_polygon(lottie, dynamic_list):
"""
Generates the bline corresponding to polygon layer
Args:
lottie (dict) : Lottie format polygon layer will be stored here
dynamic_list (common.Param.Param) : Synfig format points of polygon
Returns:
(None)
"""
################## SECTION 1 ################
# Inserting the waypoints if not animated, finding the first and last frame
# Calculating the path after this
window = {}
window["first"] = sys.maxsize
window["last"] = -1
dynamic_list = Bline(dynamic_list[0], dynamic_list)
for entry in dynamic_list.get_entry_list():
pos = entry["vector"]
pos.update_frame_window(window)
z = Param(pos.getparent(), pos.getparent().getparent())
z.animate("vector", True)
entry["vector"] = z
layer = dynamic_list.get_layer().get_layer()
origin = layer.get_param("origin")
# Animating the origin
origin.update_frame_window(window)
origin.animate("vector")
if window["first"] == sys.maxsize and window["last"] == -1:
window["first"] = window["last"] = 0
################ END OF SECTION 1 ##############
################ SECTION 2 #####################
# Generating values for all the frames in the window
fr = window["first"]
while fr <= window["last"]:
st_val, en_val = insert_dict_at(lottie, -1, fr, False)
for entry in dynamic_list.get_entry_list():
pos_cur = entry["vector"].get_value(fr)
pos_next = entry["vector"].get_value(fr + 1)
tangent1_cur, tangent2_cur = Vector(0, 0), Vector(0, 0)
tangent1_next, tangent2_next = Vector(0, 0), Vector(0, 0)
# Adding origin to each vertex
origin_cur = origin.get_value(fr)
origin_next = origin.get_value(fr + 1)
for i in range(len(pos_cur)):
pos_cur[i] += origin_cur[i]
for i in range(len(pos_next)):
pos_next[i] += origin_next[i]
# Store values in dictionary
st_val["i"].append(tangent1_cur.get_list())
st_val["o"].append(tangent2_cur.get_list())
st_val["v"].append(pos_cur)
en_val["i"].append(tangent1_next.get_list())
en_val["o"].append(tangent2_next.get_list())
en_val["v"].append(pos_next)
fr += 1
# Setting the final time
lottie.append({})
lottie[-1]["t"] = fr