GP 3.0: More conversions of the legacy grease pencil data. #106822
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Reference: blender/blender#106822
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Currently, the following data between the old and new data-block is converted:
Point attributes:
position(orx,y, andz)radius(orpressure, currently is saved pre-multiplied by the stroke thickness)opacity(orstrength)selection(from theflag>GP_SPOINT_SELECT)Stroke (curve) attributes:
cyclic(from theflag>GP_STROKE_CYCLIC)material_index(ormat_nr)Frame data:
frame_number(previouslyframenum)There is more data that needs to be converted:
Point attributes:
time: seconds since start of drawing the stroke (should maybe be saved as delta between points?)uv_rot: rotation of this point (for dot material mode)vert_color: vertex color(Note:
uv_fac, anduv_fillcan be calculated at runtime)Stroke attributes:
thickness: thickness of the strokeinittime: creation time of the strokecaps: end caps flags (should probably be two boolean attributes for front and back)hardness: controls the gradient falloff from the center line to the outer edge of the strokeaspect_ratio[2]: x-y factor for dot shapes (why is this not a single factor?)fill_opacity_fac: Opacisty factor for fillsuv_rotation,uv_translation,uv_scale: For fillsvert_color_fill: Fill "vertex" color.(Note: There are a lot of fields in the stroke that is actually runtime data. Like
triangles,boundbox,select_index)Frame data (to be stored in the layer map):
selection: frame selectionkey_type: keyframe type shown in the UILayer data:
hide,locked,select,use_lightsactive: This layer is active (should be stored as an index and a reference at runtime)parent,parsubstr: the parent object (could be a bone by name)line_change: Thickness adjustmenttintcoloropacityviewlayername: Name of the layer used to filter render output.blend_modegstep,gstep_next,gcolor_prev,gcolor_next: Onion skinning datamask_layers: list of mask layers (how to convert this?)location,rotation,scale: layer transformsbGPdata:
pixfactorradiuson the points and be replaced by using a thickness modifier)vertex_group_names,vertex_group_active_indexCurvesGeometry.onion_factor,onion_mode,onion_flag,onion_keytypegridaspect_ratiocould be a single floatvertex_paint_opacityis always 1.0 because is was replaced by overlay value, so it can be removed. This prop is not visible in the UI.About layer active.... do we want save this as today? if we put in runtime this setting will not be saved.
Onion Skinning parameters would be moved to a separated "sub" struct to keep things organized... now it's not easy to know what is for onion and what not.
This commit
0b9a5381f9adds the frame data and also converts it.This commit
c72ade033dadds the active layer functionality.All the conversions (except for the weights which needs to happen in
CurvesGeometry) have been committed.