+ dgraph = bpy.context.evaluated_depsgraph_get()
+ data = obj.evaluated_get(dgraph).data
+ data.calc_loop_triangles()
+ data.calc_normals_split()
+
+ # Mesh is split into submeshes based on their material
+ #
+ mat_list = data.materials if len(data.materials) > 0 else [None]
+ for material_id, mat in enumerate(mat_list):
+ #{
+ mref = {}
+
+ sm = mdl_submesh()
+ sm.indice_start = len( g_encoder['data']['indice'] )
+ sm.vertex_start = len( g_encoder['data']['vertex'] )
+ sm.vertex_count = 0
+ sm.indice_count = 0
+ sm.material_id = encoder_process_material( mat )
+
+ for i in range(3):
+ #{
+ sm.bbx[0][i] = 999999
+ sm.bbx[1][i] = -999999
+ #}
+
+ # Keep a reference to very very very similar vertices
+ #
+ vertex_reference = {}
+
+ # Write the vertex / indice data
+ #
+ for tri_index, tri in enumerate(data.loop_triangles):
+ #{
+ if tri.material_index != material_id:
+ continue
+
+ for j in range(3):
+ #{
+ vert = data.vertices[tri.vertices[j]]
+ li = tri.loops[j]
+ vi = data.loops[li].vertex_index
+
+ # Gather vertex information
+ #
+ co = vert.co
+ norm = data.loops[li].normal
+ uv = (0,0)
+ colour = (255,255,255,255)
+ groups = [0,0,0,0]
+ weights = [0,0,0,0]
+
+ # Uvs
+ #
+ if data.uv_layers:
+ uv = data.uv_layers.active.data[li].uv
+
+ # Vertex Colours
+ #
+ if data.vertex_colors:
+ #{
+ colour = data.vertex_colors.active.data[li].color
+ colour = (int(colour[0]*255.0),\
+ int(colour[1]*255.0),\
+ int(colour[2]*255.0),\
+ int(colour[3]*255.0))
+ #}
+
+ # Weight groups: truncates to the 3 with the most influence. The
+ # fourth bone ID is never used by the shader so it is
+ # always 0
+ #
+ if armature_def:
+ #{
+ src_groups = [_ for _ in data.vertices[vi].groups \
+ if obj.vertex_groups[_.group].name in \
+ armature_def['bones']]
+
+ weight_groups = sorted( src_groups, key = \
+ lambda a: a.weight, reverse=True )
+ tot = 0.0
+ for ml in range(3):
+ #{
+ if len(weight_groups) > ml:
+ #{
+ g = weight_groups[ml]
+ name = obj.vertex_groups[g.group].name
+ weight = g.weight
+
+ weights[ml] = weight
+ groups[ml] = armature_def['bones'].index(name)
+ tot += weight
+ #}
+ #}
+
+ if len(weight_groups) > 0:
+ #{
+ inv_norm = (1.0/tot) * 65535.0
+ for ml in range(3):
+ #{
+ weights[ml] = int( weights[ml] * inv_norm )
+ weights[ml] = min( weights[ml], 65535 )
+ weights[ml] = max( weights[ml], 0 )
+ #}
+ #}
+ #}
+ else:
+ #{
+ li1 = tri.loops[(j+1)%3]
+ vi1 = data.loops[li1].vertex_index
+ e0 = data.edges[ data.loops[li].edge_index ]
+
+ if e0.use_freestyle_mark and \
+ ((e0.vertices[0] == vi and e0.vertices[1] == vi1) or \
+ (e0.vertices[0] == vi1 and e0.vertices[1] == vi)):
+ #{
+ weights[0] = 1
+ #}
+ #}
+
+ # Add vertex and expand bound box
+ #
+ index = encoder_vertex_push( vertex_reference, co, \
+ norm, \
+ uv, \
+ colour, \
+ groups, \
+ weights )
+ g_encoder['data']['indice'] += [index]
+ #}
+ #}
+
+ # How many unique verts did we add in total
+ #
+ sm.vertex_count = len(g_encoder['data']['vertex']) - sm.vertex_start
+ sm.indice_count = len(g_encoder['data']['indice']) - sm.indice_start
+
+ # Make sure bounding box isn't -inf -> inf if no vertices
+ #
+ if sm.vertex_count == 0:
+ for j in range(2):
+ for i in range(3):
+ sm.bbx[j][i] = 0
+ else:
+ #{
+ for j in range(sm.vertex_count):
+ #{
+ vert = g_encoder['data']['vertex'][ sm.vertex_start + j ]
+
+ for i in range(3):
+ #{
+ sm.bbx[0][i] = min( sm.bbx[0][i], vert.co[i] )
+ sm.bbx[1][i] = max( sm.bbx[1][i], vert.co[i] )
+ #}
+ #}
+ #}
+
+ # Add submesh to encoder
+ #
+ g_encoder['data']['submesh'] += [sm]
+ node.submesh_count += 1
+
+ #}
+
+ # Save a reference to this node since we want to reuse the submesh indices
+ # later.
+ g_encoder['mesh_cache'][obj.data.name] = node
+#}
+
+
+def encoder_compile_ent_as( name, node, node_def ):
+#{
+ global g_encoder
+
+ if name == 'classtype_none':
+ #{
+ node.offset = 0
+ node.classtype = 0
+ return
+ #}
+ elif name not in globals():
+ #{
+ print( "Classtype '" +name + "' is unknown!" )
+ return
+ #}
+
+ buffer = g_encoder['data']['entdata']
+ node.offset = len(buffer)
+
+ cl = globals()[ name ]
+ inst = cl()
+ inst.encode_obj( node, node_def )
+
+ buffer.extend( bytearray(inst) )
+ bytearray_align_to( buffer, 4 )
+#}
+
+# Compiles animation data into model and gives us some extra node_def entries
+#
+def encoder_compile_armature( node, node_def ):
+#{
+ global g_encoder
+
+ entdata = g_encoder['data']['entdata']
+ animdata = g_encoder['data']['anim']
+ keyframedata = g_encoder['data']['keyframe']
+ mesh_cache = g_encoder['mesh_cache']
+ obj = node_def['obj']
+ bones = node_def['bones']
+
+ # extra info
+ node_def['anim_start'] = len(animdata)
+ node_def['anim_count'] = 0
+
+ if not node_def['compile_animation']:
+ #{
+ return
+ #}
+
+ # Compile anims
+ #
+ if obj.animation_data:
+ #{
+ # So we can restore later
+ #
+ previous_frame = bpy.context.scene.frame_current
+ previous_action = obj.animation_data.action
+ POSE_OR_REST_CACHE = obj.data.pose_position
+ obj.data.pose_position = 'POSE'
+
+ for NLALayer in obj.animation_data.nla_tracks:
+ #{
+ for NLAStrip in NLALayer.strips:
+ #{
+ # set active
+ #
+ for a in bpy.data.actions:
+ #{
+ if a.name == NLAStrip.name:
+ #{
+ obj.animation_data.action = a
+ break
+ #}
+ #}
+
+ # Clip to NLA settings
+ #
+ anim_start = int(NLAStrip.action_frame_start)
+ anim_end = int(NLAStrip.action_frame_end)
+
+ # Export strips
+ #
+ anim = mdl_animation()
+ anim.pstr_name = encoder_process_pstr( NLAStrip.action.name )
+ anim.rate = 30.0
+ anim.offset = len(keyframedata)
+ anim.length = anim_end-anim_start
+
+ # Export the keyframes
+ for frame in range(anim_start,anim_end):
+ #{
+ bpy.context.scene.frame_set(frame)
+
+ for bone_name in bones:
+ #{
+ for pb in obj.pose.bones:
+ #{
+ if pb.name != bone_name: continue
+
+ rb = obj.data.bones[ bone_name ]
+
+ # relative bone matrix
+ if rb.parent is not None:
+ #{
+ offset_mtx = rb.parent.matrix_local
+ offset_mtx = offset_mtx.inverted_safe() @ \
+ rb.matrix_local
+
+ inv_parent = pb.parent.matrix @ offset_mtx
+ inv_parent.invert_safe()
+ fpm = inv_parent @ pb.matrix
+ #}
+ else:
+ #{
+ bone_mtx = rb.matrix.to_4x4()
+ local_inv = rb.matrix_local.inverted_safe()
+ fpm = bone_mtx @ local_inv @ pb.matrix
+ #}
+
+ loc, rot, sca = fpm.decompose()
+
+ # local position
+ final_pos = Vector(( loc[0], loc[2], -loc[1] ))
+
+ # rotation
+ lc_m = pb.matrix_channel.to_3x3()
+ if pb.parent is not None:
+ #{
+ smtx = pb.parent.matrix_channel.to_3x3()
+ lc_m = smtx.inverted() @ lc_m
+ #}
+ rq = lc_m.to_quaternion()
+
+ kf = mdl_keyframe()
+ kf.co[0] = final_pos[0]
+ kf.co[1] = final_pos[1]
+ kf.co[2] = final_pos[2]
+
+ kf.q[0] = rq[1]
+ kf.q[1] = rq[3]
+ kf.q[2] = -rq[2]
+ kf.q[3] = rq[0]
+
+ # scale
+ kf.s[0] = sca[0]
+ kf.s[1] = sca[2]
+ kf.s[2] = sca[1]
+
+ keyframedata += [kf]
+ break
+ #}
+ #}
+ #}
+
+ # Add to animation buffer
+ #
+ animdata += [anim]
+ node_def['anim_count'] += 1
+
+ # Report progress
+ #
+ status_name = F" " + " |"*(node_def['depth']-1)
+ print( F"{status_name} | *anim: {NLAStrip.action.name}" )
+ #}
+ #}
+
+ # Restore context to how it was before
+ #
+ bpy.context.scene.frame_set( previous_frame )
+ obj.animation_data.action = previous_action
+ obj.data.pose_position = POSE_OR_REST_CACHE
+ #}
+#}
+
+# We are trying to compile this node_def
+#
+def encoder_process_definition( node_def ):
+#{
+ global g_encoder
+
+ # data sources for object/bone are taken differently
+ #
+ if 'obj' in node_def:
+ #{
+ obj = node_def['obj']
+ obj_type = obj.type
+ obj_co = obj.matrix_world @ Vector((0,0,0))
+
+ if obj_type == 'ARMATURE':
+ obj_classtype = 'classtype_skeleton'
+ elif obj_type == 'LIGHT':
+ #{
+ obj_classtype = 'classtype_world_light'
+ #}
+ else:
+ #{
+ obj_classtype = obj.cv_data.classtype
+
+ # Check for armature deform
+ #
+ for mod in obj.modifiers:
+ #{
+ if mod.type == 'ARMATURE':
+ #{
+ obj_classtype = 'classtype_skin'
+
+ # Make sure to freeze armature in rest while we collect
+ # vertex information
+ #
+ armature_def = g_encoder['graph_lookup'][mod.object]
+ POSE_OR_REST_CACHE = armature_def['obj'].data.pose_position
+ armature_def['obj'].data.pose_position = 'REST'
+ node_def['linked_armature'] = armature_def
+ break
+ #}
+ #}
+ #}
+ #}
+
+ elif 'bone' in node_def:
+ #{
+ obj = node_def['bone']
+ obj_type = 'BONE'
+ obj_co = obj.head_local
+ obj_classtype = 'classtype_bone'
+ #}
+
+ # Create node
+ #
+ node = mdl_node()
+ node.pstr_name = encoder_process_pstr( obj.name )
+
+ if node_def["parent"]:
+ node.parent = node_def["parent"]["uid"]
+
+ # Setup transform
+ #
+ node.co[0] = obj_co[0]
+ node.co[1] = obj_co[2]
+ node.co[2] = -obj_co[1]
+
+ # Convert rotation quat to our space type
+ #
+ quat = obj.matrix_local.to_quaternion()
+ node.q[0] = quat[1]
+ node.q[1] = quat[3]
+ node.q[2] = -quat[2]
+ node.q[3] = quat[0]
+
+ # Bone scale is just a vector to the tail
+ #
+ if obj_type == 'BONE':
+ #{
+ node.s[0] = obj.tail_local[0] - node.co[0]
+ node.s[1] = obj.tail_local[2] - node.co[1]
+ node.s[2] = -obj.tail_local[1] - node.co[2]
+ #}
+ else:
+ #{
+ node.s[0] = obj.scale[0]
+ node.s[1] = obj.scale[2]
+ node.s[2] = obj.scale[1]
+ #}
+
+ # Report status
+ #
+ tot_uid = g_encoder['uid_count']-1
+ obj_uid = node_def['uid']
+ obj_depth = node_def['depth']-1
+
+ status_id = F" [{obj_uid: 3}/{tot_uid}]" + " |"*obj_depth
+ status_name = status_id + F" L {obj.name}"
+
+ if obj_classtype != 'classtype_none': status_type = obj_classtype
+ else: status_type = obj_type
+
+ status_parent = F"{node.parent: 3}"
+ status_armref = ""
+
+ if obj_classtype == 'classtype_skin':
+ status_armref = F" [armature -> {armature_def['obj'].cv_data.uid}]"
+
+ print(F"{status_name:<32} {status_type:<22} {status_parent} {status_armref}")
+
+ # Process mesh if needed
+ #
+ if obj_type == 'MESH':
+ #{
+ encoder_compile_mesh( node, node_def )
+ #}
+ elif obj_type == 'ARMATURE':
+ #{
+ encoder_compile_armature( node, node_def )
+ #}
+
+ encoder_compile_ent_as( obj_classtype, node, node_def )
+
+ # Make sure to reset the armature we just mucked about with
+ #
+ if obj_classtype == 'classtype_skin':
+ armature_def['obj'].data.pose_position = POSE_OR_REST_CACHE
+
+ g_encoder['data']['node'] += [node]
+#}
+
+# The post processing step or the pre processing to the writing step
+#
+def encoder_write_to_file( path ):
+#{
+ global g_encoder
+
+ # Compile down to a byte array
+ #
+ header = g_encoder['header']
+ file_pos = sizeof(header)
+ file_data = bytearray()
+ print( " Compositing data arrays" )
+
+ for array_name in g_encoder['data']:
+ #{
+ file_pos += bytearray_align_to( file_data, 16, sizeof(header) )
+ arr = g_encoder['data'][array_name]
+
+ setattr( header, array_name + "_offset", file_pos )
+
+ print( F" {array_name:<16} @{file_pos:> 8X}[{len(arr)}]" )
+
+ if isinstance( arr, bytearray ):
+ #{
+ setattr( header, array_name + "_size", len(arr) )
+
+ file_data.extend( arr )
+ file_pos += len(arr)
+ #}
+ else:
+ #{
+ setattr( header, array_name + "_count", len(arr) )
+
+ for item in arr:
+ #{
+ bbytes = bytearray(item)
+ file_data.extend( bbytes )
+ file_pos += sizeof(item)
+ #}
+ #}
+ #}
+
+ # This imperitive for this field to be santized in the future!
+ #
+ header.file_length = file_pos
+
+ print( " Writing file" )
+ # Write header and data chunk to file
+ #
+ fp = open( path, "wb" )
+ fp.write( bytearray( header ) )
+ fp.write( file_data )
+ fp.close()
+#}
+
+# Main compiler, uses string as the identifier for the collection
+#
+def write_model(collection_name):
+#{
+ global g_encoder
+ print( F"Model graph | Create mode '{collection_name}'" )
+ folder = bpy.path.abspath(bpy.context.scene.cv_data.export_dir)
+ path = F"{folder}{collection_name}.mdl"
+ print( path )
+
+ collection = bpy.data.collections[collection_name]
+
+ encoder_init( collection )
+ encoder_build_scene_graph( collection )
+
+ # Compile
+ #
+ print( " Comping objects" )
+ it = encoder_graph_iterator( g_encoder['scene_graph'] )
+ for node_def in it:
+ encoder_process_definition( node_def )
+
+ # Write
+ #
+ encoder_write_to_file( path )
+
+ print( F"Completed {collection_name}.mdl" )
+#}
+
+# ---------------------------------------------------------------------------- #
+# #
+# GUI section #
+# #
+# ---------------------------------------------------------------------------- #
+
+cv_view_draw_handler = None
+cv_view_shader = gpu.shader.from_builtin('3D_SMOOTH_COLOR')
+cv_view_verts = []
+cv_view_colours = []
+cv_view_course_i = 0
+
+# Draw axis alligned sphere at position with radius
+#
+def cv_draw_sphere( pos, radius, colour ):
+#{
+ global cv_view_verts, cv_view_colours
+
+ ly = pos + Vector((0,0,radius))
+ lx = pos + Vector((0,radius,0))
+ lz = pos + Vector((0,0,radius))
+
+ pi = 3.14159265358979323846264
+
+ for i in range(16):
+ #{
+ t = ((i+1.0) * 1.0/16.0) * pi * 2.0
+ s = math.sin(t)
+ c = math.cos(t)
+
+ py = pos + Vector((s*radius,0.0,c*radius))
+ px = pos + Vector((s*radius,c*radius,0.0))
+ pz = pos + Vector((0.0,s*radius,c*radius))
+
+ cv_view_verts += [ px, lx ]
+ cv_view_verts += [ py, ly ]
+ cv_view_verts += [ pz, lz ]
+
+ cv_view_colours += [ colour, colour, colour, colour, colour, colour ]
+
+ ly = py
+ lx = px
+ lz = pz
+ #}
+ cv_draw_lines()
+#}
+
+# Draw axis alligned sphere at position with radius
+#
+def cv_draw_halfsphere( pos, tx, ty, tz, radius, colour ):
+#{
+ global cv_view_verts, cv_view_colours
+
+ ly = pos + tz*radius
+ lx = pos + ty*radius
+ lz = pos + tz*radius
+
+ pi = 3.14159265358979323846264
+
+ for i in range(16):
+ #{
+ t = ((i+1.0) * 1.0/16.0) * pi
+ s = math.sin(t)
+ c = math.cos(t)
+
+ s1 = math.sin(t*2.0)
+ c1 = math.cos(t*2.0)
+
+ py = pos + s*tx*radius + c *tz*radius
+ px = pos + s*tx*radius + c *ty*radius
+ pz = pos + s1*ty*radius + c1*tz*radius
+
+ cv_view_verts += [ px, lx ]
+ cv_view_verts += [ py, ly ]
+ cv_view_verts += [ pz, lz ]
+
+ cv_view_colours += [ colour, colour, colour, colour, colour, colour ]
+
+ ly = py
+ lx = px
+ lz = pz
+ #}
+ cv_draw_lines()
+#}
+
+# Draw transformed -1 -> 1 cube
+#
+def cv_draw_ucube( transform, colour ):
+#{
+ global cv_view_verts, cv_view_colours
+
+ a = Vector((-1,-1,-1))
+ b = Vector((1,1,1))
+
+ vs = [None]*8
+ vs[0] = transform @ Vector((a[0], a[1], a[2]))
+ vs[1] = transform @ Vector((a[0], b[1], a[2]))
+ vs[2] = transform @ Vector((b[0], b[1], a[2]))
+ vs[3] = transform @ Vector((b[0], a[1], a[2]))
+ vs[4] = transform @ Vector((a[0], a[1], b[2]))
+ vs[5] = transform @ Vector((a[0], b[1], b[2]))
+ vs[6] = transform @ Vector((b[0], b[1], b[2]))
+ vs[7] = transform @ Vector((b[0], a[1], b[2]))
+
+ indices = [(0,1),(1,2),(2,3),(3,0),(4,5),(5,6),(6,7),(7,4),\
+ (0,4),(1,5),(2,6),(3,7)]
+
+ for l in indices:
+ #{
+ v0 = vs[l[0]]
+ v1 = vs[l[1]]
+ cv_view_verts += [(v0[0],v0[1],v0[2])]
+ cv_view_verts += [(v1[0],v1[1],v1[2])]
+ cv_view_colours += [(0,1,0,1),(0,1,0,1)]
+ #}
+ cv_draw_lines()
+#}
+
+# Draw line with colour
+#
+def cv_draw_line( p0, p1, colour ):
+#{
+ global cv_view_verts, cv_view_colours
+
+ cv_view_verts += [p0,p1]
+ cv_view_colours += [colour, colour]
+ cv_draw_lines()
+#}
+
+# Draw line with colour(s)
+#
+def cv_draw_line2( p0, p1, c0, c1 ):
+#{
+ global cv_view_verts, cv_view_colours
+
+ cv_view_verts += [p0,p1]
+ cv_view_colours += [c0,c1]
+ cv_draw_lines()
+#}
+
+#
+#
+def cv_tangent_basis( n, tx, ty ):
+#{
+ if abs( n[0] ) >= 0.57735027:
+ #{
+ tx[0] = n[1]
+ tx[1] = -n[0]
+ tx[2] = 0.0
+ #}
+ else:
+ #{
+ tx[0] = 0.0
+ tx[1] = n[2]
+ tx[2] = -n[1]
+ #}
+
+ tx.normalize()
+ _ty = n.cross( tx )
+
+ ty[0] = _ty[0]
+ ty[1] = _ty[1]
+ ty[2] = _ty[2]
+#}
+
+# Draw coloured arrow
+#
+def cv_draw_arrow( p0, p1, c0 ):
+#{
+ global cv_view_verts, cv_view_colours
+
+ n = p1-p0
+ midpt = p0 + n*0.5
+ n.normalize()
+
+ tx = Vector((1,0,0))
+ ty = Vector((1,0,0))
+ cv_tangent_basis( n, tx, ty )
+
+ cv_view_verts += [p0,p1, midpt+(tx-n)*0.15,midpt, midpt+(-tx-n)*0.15,midpt ]
+ cv_view_colours += [c0,c0,c0,c0,c0,c0]
+ cv_draw_lines()
+#}
+
+# Drawhandles of a bezier control point
+#
+def cv_draw_bhandle( obj, direction, colour ):
+#{
+ global cv_view_verts, cv_view_colours
+
+ p0 = obj.location
+ h0 = obj.matrix_world @ Vector((0,direction,0))
+
+ cv_view_verts += [p0]
+ cv_view_verts += [h0]
+ cv_view_colours += [colour,colour]
+ cv_draw_lines()
+#}
+
+# Draw a bezier curve (at fixed resolution 10)
+#
+def cv_draw_bezier( p0,h0,p1,h1,c0,c1 ):
+#{
+ global cv_view_verts, cv_view_colours
+
+ last = p0
+ for i in range(10):
+ #{
+ t = (i+1)/10
+ a0 = 1-t
+
+ tt = t*t
+ ttt = tt*t
+ p=ttt*p1+(3*tt-3*ttt)*h1+(3*ttt-6*tt+3*t)*h0+(3*tt-ttt-3*t+1)*p0
+
+ cv_view_verts += [(last[0],last[1],last[2])]
+ cv_view_verts += [(p[0],p[1],p[2])]
+ cv_view_colours += [c0*a0+c1*(1-a0),c0*a0+c1*(1-a0)]
+
+ last = p
+ #}
+ cv_draw_lines()
+#}
+
+# I think this one extends the handles of the bezier otwards......
+#
+def cv_draw_sbpath( o0,o1,c0,c1,s0,s1 ):
+#{
+ global cv_view_course_i
+
+ offs = ((cv_view_course_i % 2)*2-1) * cv_view_course_i * 0.02
+
+ p0 = o0.matrix_world @ Vector((offs, 0,0))
+ h0 = o0.matrix_world @ Vector((offs, s0,0))
+ p1 = o1.matrix_world @ Vector((offs, 0,0))
+ h1 = o1.matrix_world @ Vector((offs,-s1,0))
+
+ cv_draw_bezier( p0,h0,p1,h1,c0,c1 )
+ cv_draw_lines()
+#}
+
+# Flush the lines buffers. This is called often because god help you if you want
+# to do fixed, fast buffers in this catastrophic programming language.
+#
+def cv_draw_lines():
+#{
+ global cv_view_shader, cv_view_verts, cv_view_colours
+
+ if len(cv_view_verts) < 2:
+ return
+
+ lines = batch_for_shader(\
+ cv_view_shader, 'LINES', \
+ { "pos":cv_view_verts, "color":cv_view_colours })
+
+ lines.draw( cv_view_shader )
+
+ cv_view_verts = []
+ cv_view_colours = []
+#}
+
+# I dont remember what this does exactly
+#
+def cv_draw_bpath( o0,o1,c0,c1 ):
+#{
+ cv_draw_sbpath( o0,o1,c0,c1,1.0,1.0 )
+#}
+
+# Semi circle to show the limit. and some lines
+#
+def draw_limit( obj, center, major, minor, amin, amax, colour ):
+#{
+ global cv_view_verts, cv_view_colours
+ f = 0.05
+ ay = major*f
+ ax = minor*f
+
+ for x in range(16):
+ #{
+ t0 = x/16
+ t1 = (x+1)/16
+ a0 = amin*(1.0-t0)+amax*t0
+ a1 = amin*(1.0-t1)+amax*t1
+
+ p0 = center + major*f*math.cos(a0) + minor*f*math.sin(a0)
+ p1 = center + major*f*math.cos(a1) + minor*f*math.sin(a1)
+
+ p0=obj.matrix_world @ p0
+ p1=obj.matrix_world @ p1
+ cv_view_verts += [p0,p1]
+ cv_view_colours += [colour,colour]
+
+ if x == 0:
+ #{
+ cv_view_verts += [p0,center]
+ cv_view_colours += [colour,colour]
+ #}
+ if x == 15:
+ #{
+ cv_view_verts += [p1,center]
+ cv_view_colours += [colour,colour]
+ #}
+ #}
+
+ cv_view_verts += [center+major*1.2*f,center+major*f*0.8]
+ cv_view_colours += [colour,colour]
+
+ cv_draw_lines()
+#}
+
+# Cone and twist limit
+#
+def draw_cone_twist( center, vx, vy, va ):
+#{
+ global cv_view_verts, cv_view_colours
+ axis = vy.cross( vx )
+ axis.normalize()
+
+ size = 0.12
+
+ cv_view_verts += [center, center+va*size]
+ cv_view_colours += [ (1,1,1,1), (1,1,1,1) ]
+
+ for x in range(32):
+ #{
+ t0 = (x/32) * math.tau
+ t1 = ((x+1)/32) * math.tau
+
+ c0 = math.cos(t0)
+ s0 = math.sin(t0)
+ c1 = math.cos(t1)
+ s1 = math.sin(t1)
+
+ p0 = center + (axis + vx*c0 + vy*s0).normalized() * size
+ p1 = center + (axis + vx*c1 + vy*s1).normalized() * size
+
+ col0 = ( abs(c0), abs(s0), 0.0, 1.0 )
+ col1 = ( abs(c1), abs(s1), 0.0, 1.0 )
+
+ cv_view_verts += [center, p0, p0, p1]
+ cv_view_colours += [ (0,0,0,0), col0, col0, col1 ]
+ #}
+
+ cv_draw_lines()
+#}
+
+# Draws constraints and stuff for the skeleton. This isnt documented and wont be
+#
+def draw_skeleton_helpers( obj ):
+#{
+ global cv_view_verts, cv_view_colours
+
+ if obj.data.pose_position != 'REST':
+ #{
+ return
+ #}
+
+ for bone in obj.data.bones:
+ #{
+ c = bone.head_local
+ a = Vector((bone.cv_data.v0[0], bone.cv_data.v0[1], bone.cv_data.v0[2]))
+ b = Vector((bone.cv_data.v1[0], bone.cv_data.v1[1], bone.cv_data.v1[2]))
+
+ if bone.cv_data.collider == 'collider_box':
+ #{
+
+ vs = [None]*8
+ vs[0]=obj.matrix_world@Vector((c[0]+a[0],c[1]+a[1],c[2]+a[2]))
+ vs[1]=obj.matrix_world@Vector((c[0]+a[0],c[1]+b[1],c[2]+a[2]))
+ vs[2]=obj.matrix_world@Vector((c[0]+b[0],c[1]+b[1],c[2]+a[2]))
+ vs[3]=obj.matrix_world@Vector((c[0]+b[0],c[1]+a[1],c[2]+a[2]))
+ vs[4]=obj.matrix_world@Vector((c[0]+a[0],c[1]+a[1],c[2]+b[2]))
+ vs[5]=obj.matrix_world@Vector((c[0]+a[0],c[1]+b[1],c[2]+b[2]))
+ vs[6]=obj.matrix_world@Vector((c[0]+b[0],c[1]+b[1],c[2]+b[2]))
+ vs[7]=obj.matrix_world@Vector((c[0]+b[0],c[1]+a[1],c[2]+b[2]))
+
+ indices = [(0,1),(1,2),(2,3),(3,0),(4,5),(5,6),(6,7),(7,4),\
+ (0,4),(1,5),(2,6),(3,7)]
+
+ for l in indices:
+ #{
+ v0 = vs[l[0]]
+ v1 = vs[l[1]]
+
+ cv_view_verts += [(v0[0],v0[1],v0[2])]
+ cv_view_verts += [(v1[0],v1[1],v1[2])]
+ cv_view_colours += [(0.5,0.5,0.5,0.5),(0.5,0.5,0.5,0.5)]
+ #}
+ #}
+ elif bone.cv_data.collider == 'collider_capsule':
+ #{
+ v0 = b-a
+ major_axis = 0
+ largest = -1.0
+
+ for i in range(3):
+ #{
+ if abs(v0[i]) > largest:
+ #{
+ largest = abs(v0[i])
+ major_axis = i
+ #}
+ #}
+
+ v1 = Vector((0,0,0))
+ v1[major_axis] = 1.0
+
+ tx = Vector((0,0,0))
+ ty = Vector((0,0,0))
+
+ cv_tangent_basis( v1, tx, ty )
+ r = (abs(tx.dot( v0 )) + abs(ty.dot( v0 ))) * 0.25
+ l = v0[ major_axis ] - r*2
+
+ p0 = obj.matrix_world@Vector( c + (a+b)*0.5 + v1*l*-0.5 )
+ p1 = obj.matrix_world@Vector( c + (a+b)*0.5 + v1*l* 0.5 )
+
+ colour = [0.2,0.2,0.2,1.0]
+ colour[major_axis] = 0.5
+
+ cv_draw_halfsphere( p0, -v1, ty, tx, r, colour )
+ cv_draw_halfsphere( p1, v1, ty, tx, r, colour )
+ cv_draw_line( p0+tx* r, p1+tx* r, colour )
+ cv_draw_line( p0+tx*-r, p1+tx*-r, colour )
+ cv_draw_line( p0+ty* r, p1+ty* r, colour )
+ cv_draw_line( p0+ty*-r, p1+ty*-r, colour )
+ #}
+ else:
+ #{
+ continue
+ #}
+
+ center = obj.matrix_world @ c
+ if bone.cv_data.con0:
+ #{
+ vx = Vector([bone.cv_data.conevx[_] for _ in range(3)])
+ vy = Vector([bone.cv_data.conevy[_] for _ in range(3)])
+ va = Vector([bone.cv_data.coneva[_] for _ in range(3)])
+ draw_cone_twist( center, vx, vy, va )
+
+ #draw_limit( obj, c, Vector((0,0,1)),Vector((0,-1,0)), \
+ # bone.cv_data.mins[0], bone.cv_data.maxs[0], \
+ # (1,0,0,1))
+ #draw_limit( obj, c, Vector((0,-1,0)),Vector((1,0,0)), \
+ # bone.cv_data.mins[1], bone.cv_data.maxs[1], \
+ # (0,1,0,1))
+ #draw_limit( obj, c, Vector((1,0,0)),Vector((0,0,1)), \
+ # bone.cv_data.mins[2], bone.cv_data.maxs[2], \
+ # (0,0,1,1))
+ #}
+ #}
+#}
+
+def cv_draw():
+#{
+ global cv_view_shader
+ global cv_view_verts
+ global cv_view_colours
+ global cv_view_course_i
+
+ cv_view_course_i = 0
+ cv_view_verts = []
+ cv_view_colours = []
+
+ cv_view_shader.bind()
+ gpu.state.depth_mask_set(False)
+ gpu.state.line_width_set(2.0)
+ gpu.state.face_culling_set('BACK')
+ gpu.state.depth_test_set('LESS')
+ gpu.state.blend_set('NONE')
+
+ for obj in bpy.context.collection.objects:
+ #{
+ if obj.type == 'ARMATURE':
+ #{
+ if obj.data.pose_position == 'REST':
+ draw_skeleton_helpers( obj )
+ #}
+ else:
+ #{
+ classtype = obj.cv_data.classtype
+ if (classtype != 'classtype_none') and (classtype in globals()):
+ #{
+ cl = globals()[ classtype ]
+
+ if getattr( cl, "draw_scene_helpers", None ):
+ #{
+ cl.draw_scene_helpers( obj )
+ #}
+ #}
+ #}
+ #}
+
+ cv_draw_lines()
+ return
+#}
+
+
+# ---------------------------------------------------------------------------- #
+# #
+# Blender #
+# #
+# ---------------------------------------------------------------------------- #
+
+# Checks whether this object has a classtype assigned. we can only target other
+# classes
+def cv_poll_target(scene, obj):
+#{
+ if obj == bpy.context.active_object:
+ return False
+ if obj.cv_data.classtype == 'classtype_none':
+ return False
+
+ return True
+#}
+
+class CV_MESH_SETTINGS(bpy.types.PropertyGroup):
+#{
+ v0: bpy.props.FloatVectorProperty(name="v0",size=3)
+ v1: bpy.props.FloatVectorProperty(name="v1",size=3)
+ v2: bpy.props.FloatVectorProperty(name="v2",size=3)
+ v3: bpy.props.FloatVectorProperty(name="v3",size=3)
+#}
+
+class CV_LIGHT_SETTINGS(bpy.types.PropertyGroup):
+#{
+ bp0: bpy.props.BoolProperty( name="bp0" );
+#}
+
+class CV_LIGHT_PANEL(bpy.types.Panel):
+#{
+ bl_label="[Skate Rift]"
+ bl_idname="SCENE_PT_cv_light"
+ bl_space_type='PROPERTIES'
+ bl_region_type='WINDOW'
+ bl_context='data'
+
+ def draw(_,context):
+ #{
+ active_object = context.active_object
+ if active_object == None: return
+
+ if active_object.type != 'LIGHT': return
+
+ data = active_object.data.cv_data
+ _.layout.prop( data, "bp0", text="Only on during night" )
+ #}
+#}
+
+class CV_OBJ_SETTINGS(bpy.types.PropertyGroup):
+#{
+ uid: bpy.props.IntProperty( name="" )
+
+ strp: bpy.props.StringProperty( name="strp" )
+ intp: bpy.props.IntProperty( name="intp" )
+ fltp: bpy.props.FloatProperty( name="fltp" )
+ bp0: bpy.props.BoolProperty( name="bp0" )
+ bp1: bpy.props.BoolProperty( name="bp1" )
+ bp2: bpy.props.BoolProperty( name="bp2" )
+ bp3: bpy.props.BoolProperty( name="bp3" )
+
+ target: bpy.props.PointerProperty( type=bpy.types.Object, name="target", \
+ poll=cv_poll_target )
+ target1: bpy.props.PointerProperty( type=bpy.types.Object, name="target1", \
+ poll=cv_poll_target )
+ target2: bpy.props.PointerProperty( type=bpy.types.Object, name="target2", \
+ poll=cv_poll_target )
+ target3: bpy.props.PointerProperty( type=bpy.types.Object, name="target3", \
+ poll=cv_poll_target )
+
+ colour: bpy.props.FloatVectorProperty( name="colour",subtype='COLOR',\
+ min=0.0,max=1.0)
+
+ classtype: bpy.props.EnumProperty(
+ name="Format",
+ items = [
+ ('classtype_none', "classtype_none", "", 0),
+ ('classtype_gate', "classtype_gate", "", 1),
+ ('classtype_spawn', "classtype_spawn", "", 3),
+ ('classtype_water', "classtype_water", "", 4),
+ ('classtype_route_node', "classtype_route_node", "", 8 ),
+ ('classtype_route', "classtype_route", "", 9 ),
+ ('classtype_audio',"classtype_audio","",14),
+ ('classtype_trigger',"classtype_trigger","",100),
+ ('classtype_logic_achievement',"classtype_logic_achievement","",101),
+ ('classtype_logic_relay',"classtype_logic_relay","",102),
+ ('classtype_spawn_link',"classtype_spawn_link","",150),
+ ('classtype_nonlocal_gate', "classtype_nonlocal_gate", "", 300)
+ ])
+#}
+
+class CV_BONE_SETTINGS(bpy.types.PropertyGroup):
+#{
+ collider: bpy.props.EnumProperty(
+ name="Collider Type",
+ items = [
+ ('collider_none', "collider_none", "", 0),
+ ('collider_box', "collider_box", "", 1),
+ ('collider_capsule', "collider_capsule", "", 2),
+ ])
+
+ v0: bpy.props.FloatVectorProperty(name="v0",size=3)
+ v1: bpy.props.FloatVectorProperty(name="v1",size=3)
+
+ con0: bpy.props.BoolProperty(name="Constriant 0",default=False)
+ mins: bpy.props.FloatVectorProperty(name="mins",size=3)
+ maxs: bpy.props.FloatVectorProperty(name="maxs",size=3)
+
+ conevx: bpy.props.FloatVectorProperty(name="conevx",size=3)
+ conevy: bpy.props.FloatVectorProperty(name="conevy",size=3)
+ coneva: bpy.props.FloatVectorProperty(name="coneva",size=3)
+ conet: bpy.props.FloatProperty(name="conet")
+#}
+
+class CV_BONE_PANEL(bpy.types.Panel):
+#{
+ bl_label="[Skate Rift]"
+ bl_idname="SCENE_PT_cv_bone"
+ bl_space_type='PROPERTIES'
+ bl_region_type='WINDOW'
+ bl_context='bone'
+
+ def draw(_,context):
+ #{
+ active_object = context.active_object
+ if active_object == None: return
+
+ bone = active_object.data.bones.active
+ if bone == None: return
+
+ _.layout.prop( bone.cv_data, "collider" )
+ _.layout.prop( bone.cv_data, "v0" )
+ _.layout.prop( bone.cv_data, "v1" )
+
+ _.layout.label( text="Angle Limits" )
+ _.layout.prop( bone.cv_data, "con0" )
+
+ _.layout.prop( bone.cv_data, "conevx" )
+ _.layout.prop( bone.cv_data, "conevy" )
+ _.layout.prop( bone.cv_data, "coneva" )
+ _.layout.prop( bone.cv_data, "conet" )
+ #}
+#}
+
+class CV_SCENE_SETTINGS(bpy.types.PropertyGroup):
+#{
+ use_hidden: bpy.props.BoolProperty( name="use hidden", default=False )
+ export_dir: bpy.props.StringProperty( name="Export Dir", subtype='DIR_PATH' )
+#}
+
+class CV_COLLECTION_SETTINGS(bpy.types.PropertyGroup):
+#{
+ pack_textures: bpy.props.BoolProperty( name="Pack Textures", default=False )
+ animations: bpy.props.BoolProperty( name="Export animation", default=True)
+#}
+
+class CV_MATERIAL_SETTINGS(bpy.types.PropertyGroup):
+#{
+ shader: bpy.props.EnumProperty(
+ name="Format",
+ items = [
+ ('standard',"standard","",0),
+ ('standard_cutout', "standard_cutout", "", 1),
+ ('terrain_blend', "terrain_blend", "", 2),
+ ('vertex_blend', "vertex_blend", "", 3),
+ ('water',"water","",4),
+ ])
+
+ surface_prop: bpy.props.EnumProperty(
+ name="Surface Property",
+ items = [
+ ('concrete','concrete','',0),
+ ('wood','wood','',1),
+ ('grass','grass','',2)
+ ])
+
+ collision: bpy.props.BoolProperty( \
+ name="Collisions Enabled",\
+ default=True,\
+ description = "Can the player collide with this material"\
+ )
+ skate_surface: bpy.props.BoolProperty( \
+ name="Skate Surface", \
+ default=True,\
+ description = "Should the game try to target this surface?" \
+ )
+ grind_surface: bpy.props.BoolProperty( \
+ name="Grind Surface", \
+ default=False,\
+ description = "Grind face?" \
+ )
+ grow_grass: bpy.props.BoolProperty( \
+ name="Grow Grass", \
+ default=False,\
+ description = "Spawn grass sprites on this surface?" \
+ )
+ blend_offset: bpy.props.FloatVectorProperty( \
+ name="Blend Offset", \
+ size=2, \
+ default=Vector((0.5,0.0)),\
+ description="When surface is more than 45 degrees, add this vector " +\
+ "to the UVs" \
+ )
+ sand_colour: bpy.props.FloatVectorProperty( \
+ name="Sand Colour",\
+ subtype='COLOR',\
+ min=0.0,max=1.0,\
+ default=Vector((0.79,0.63,0.48)),\
+ description="Blend to this colour near the 0 coordinate on UP axis"\
+ )
+ shore_colour: bpy.props.FloatVectorProperty( \
+ name="Shore Colour",\
+ subtype='COLOR',\
+ min=0.0,max=1.0,\
+ default=Vector((0.03,0.32,0.61)),\
+ description="Water colour at the shoreline"\
+ )
+ ocean_colour: bpy.props.FloatVectorProperty( \
+ name="Ocean Colour",\
+ subtype='COLOR',\
+ min=0.0,max=1.0,\
+ default=Vector((0.0,0.006,0.03)),\
+ description="Water colour in the deep bits"\
+ )
+#}
+
+class CV_MATERIAL_PANEL(bpy.types.Panel):
+#{
+ bl_label="Skate Rift material"
+ bl_idname="MATERIAL_PT_cv_material"
+ bl_space_type='PROPERTIES'
+ bl_region_type='WINDOW'
+ bl_context="material"
+
+ def draw(_,context):
+ #{
+ active_object = bpy.context.active_object
+ if active_object == None: return
+ active_mat = active_object.active_material
+ if active_mat == None: return
+
+ info = material_info( active_mat )
+
+ if 'tex_diffuse' in info:
+ #{
+ _.layout.label( icon='INFO', \
+ text=F"{info['tex_diffuse'].name} will be compiled" )
+ #}
+
+ _.layout.prop( active_mat.cv_data, "shader" )
+ _.layout.prop( active_mat.cv_data, "surface_prop" )
+ _.layout.prop( active_mat.cv_data, "collision" )
+
+ if active_mat.cv_data.collision:
+ _.layout.prop( active_mat.cv_data, "skate_surface" )
+ _.layout.prop( active_mat.cv_data, "grind_surface" )
+ _.layout.prop( active_mat.cv_data, "grow_grass" )
+
+ if active_mat.cv_data.shader == "terrain_blend":
+ #{
+ box = _.layout.box()
+ box.prop( active_mat.cv_data, "blend_offset" )
+ box.prop( active_mat.cv_data, "sand_colour" )
+ #}
+ elif active_mat.cv_data.shader == "vertex_blend":
+ #{
+ box = _.layout.box()
+ box.label( icon='INFO', text="Uses vertex colours, the R channel" )
+ box.prop( active_mat.cv_data, "blend_offset" )
+ #}
+ elif active_mat.cv_data.shader == "water":
+ #{
+ box = _.layout.box()
+ box.label( icon='INFO', text="Depth scale of 16 meters" )
+ box.prop( active_mat.cv_data, "shore_colour" )
+ box.prop( active_mat.cv_data, "ocean_colour" )
+ #}
+ #}
+#}
+
+class CV_OBJ_PANEL(bpy.types.Panel):
+#{
+ bl_label="Entity Config"
+ bl_idname="SCENE_PT_cv_entity"
+ bl_space_type='PROPERTIES'
+ bl_region_type='WINDOW'
+ bl_context="object"
+
+ def draw(_,context):
+ #{
+ active_object = bpy.context.active_object
+ if active_object == None: return
+ if active_object.type == 'ARMATURE':
+ #{
+ row = _.layout.row()
+ row.enabled = False
+ row.label( text="This object has the intrinsic classtype of skeleton" )
+ return
+ #}
+
+ _.layout.prop( active_object.cv_data, "classtype" )
+
+ classtype = active_object.cv_data.classtype
+
+ if (classtype != 'classtype_none') and (classtype in globals()):
+ #{
+ cl = globals()[ classtype ]
+
+ if getattr( cl, "editor_interface", None ):
+ #{
+ cl.editor_interface( _.layout, active_object )
+ #}
+ #}
+ #}
+#}
+
+class CV_COMPILE(bpy.types.Operator):
+#{
+ bl_idname="carve.compile_all"
+ bl_label="Compile All"
+
+ def execute(_,context):
+ #{
+ view_layer = bpy.context.view_layer
+ for col in view_layer.layer_collection.children["export"].children:
+ if not col.hide_viewport or bpy.context.scene.cv_data.use_hidden:
+ write_model( col.name )
+
+ return {'FINISHED'}
+ #}
+#}
+
+class CV_COMPILE_THIS(bpy.types.Operator):
+#{
+ bl_idname="carve.compile_this"
+ bl_label="Compile This collection"
+
+ def execute(_,context):
+ #{
+ col = bpy.context.collection
+ write_model( col.name )
+
+ return {'FINISHED'}
+ #}
+#}
+
+class CV_INTERFACE(bpy.types.Panel):
+#{
+ bl_idname = "VIEW3D_PT_carve"
+ bl_label = "Skate Rift"
+ bl_space_type = 'VIEW_3D'
+ bl_region_type = 'UI'
+ bl_category = "Skate Rift"
+
+ def draw(_, context):
+ #{
+ layout = _.layout
+ layout.prop( context.scene.cv_data, "export_dir" )
+
+ col = bpy.context.collection
+
+ found_in_export = False
+ export_count = 0
+ view_layer = bpy.context.view_layer
+ for c1 in view_layer.layer_collection.children["export"].children:
+ #{
+ if not c1.hide_viewport or bpy.context.scene.cv_data.use_hidden:
+ export_count += 1
+
+ if c1.name == col.name:
+ #{
+ found_in_export = True
+ #}
+ #}
+
+ box = layout.box()
+ if found_in_export:
+ #{
+ box.label( text=col.name + ".mdl" )
+ box.prop( col.cv_data, "pack_textures" )
+ box.prop( col.cv_data, "animations" )
+ box.operator( "carve.compile_this" )
+ #}
+ else:
+ #{
+ row = box.row()
+ row.enabled=False
+ row.label( text=col.name )
+ box.label( text="This collection is not in the export group" )
+ #}
+
+ box = layout.box()
+ row = box.row()
+
+ split = row.split( factor = 0.3, align=True )
+ split.prop( context.scene.cv_data, "use_hidden", text="hidden" )
+
+ row1 = split.row()
+ if export_count == 0:
+ row1.enabled=False
+ row1.operator( "carve.compile_all", \
+ text=F"Compile all ({export_count} collections)" )
+ #}
+#}
+
+
+classes = [CV_OBJ_SETTINGS,CV_OBJ_PANEL,CV_COMPILE,CV_INTERFACE,\
+ CV_MESH_SETTINGS, CV_SCENE_SETTINGS, CV_BONE_SETTINGS,\
+ CV_BONE_PANEL, CV_COLLECTION_SETTINGS, CV_COMPILE_THIS,\
+ CV_MATERIAL_SETTINGS, CV_MATERIAL_PANEL, CV_LIGHT_SETTINGS,\
+ CV_LIGHT_PANEL]
+
+def register():
+#{
+ global cv_view_draw_handler
+
+ for c in classes:
+ bpy.utils.register_class(c)
+
+ bpy.types.Object.cv_data = bpy.props.PointerProperty(type=CV_OBJ_SETTINGS)
+ bpy.types.Mesh.cv_data = bpy.props.PointerProperty(type=CV_MESH_SETTINGS)
+ bpy.types.Scene.cv_data = bpy.props.PointerProperty(type=CV_SCENE_SETTINGS)
+ bpy.types.Bone.cv_data = bpy.props.PointerProperty(type=CV_BONE_SETTINGS)
+ bpy.types.Collection.cv_data = \
+ bpy.props.PointerProperty(type=CV_COLLECTION_SETTINGS)
+ bpy.types.Material.cv_data = \
+ bpy.props.PointerProperty(type=CV_MATERIAL_SETTINGS)
+ bpy.types.Light.cv_data = bpy.props.PointerProperty(type=CV_LIGHT_SETTINGS)
+
+ cv_view_draw_handler = bpy.types.SpaceView3D.draw_handler_add(\
+ cv_draw,(),'WINDOW','POST_VIEW')
+#}
+
+def unregister():
+#{
+ global cv_view_draw_handler
+
+ for c in classes:
+ bpy.utils.unregister_class(c)
+
+ bpy.types.SpaceView3D.draw_handler_remove(cv_view_draw_handler,'WINDOW')
+#}
+
+# ---------------------------------------------------------------------------- #
+# #
+# QOI encoder #
+# #
+# ---------------------------------------------------------------------------- #
+# #
+# Transliteration of: #
+# https://github.com/phoboslab/qoi/blob/master/qoi.h #
+# #
+# Copyright (c) 2021, Dominic Szablewski - https://phoboslab.org #
+# SPDX-License-Identifier: MIT #
+# QOI - The "Quite OK Image" format for fast, lossless image compression #
+# #
+# ---------------------------------------------------------------------------- #
+
+class qoi_rgba_t(Structure):
+#{
+ _pack_ = 1
+ _fields_ = [("r",c_uint8),
+ ("g",c_uint8),
+ ("b",c_uint8),
+ ("a",c_uint8)]
+#}
+
+QOI_OP_INDEX = 0x00 # 00xxxxxx
+QOI_OP_DIFF = 0x40 # 01xxxxxx
+QOI_OP_LUMA = 0x80 # 10xxxxxx
+QOI_OP_RUN = 0xc0 # 11xxxxxx
+QOI_OP_RGB = 0xfe # 11111110
+QOI_OP_RGBA = 0xff # 11111111
+
+QOI_MASK_2 = 0xc0 # 11000000
+
+def qoi_colour_hash( c ):
+#{
+ return c.r*3 + c.g*5 + c.b*7 + c.a*11
+#}
+
+def qoi_eq( a, b ):
+#{
+ return (a.r==b.r) and (a.g==b.g) and (a.b==b.b) and (a.a==b.a)
+#}
+
+def qoi_32bit( v ):
+#{
+ return bytearray([ (0xff000000 & v) >> 24, \
+ (0x00ff0000 & v) >> 16, \
+ (0x0000ff00 & v) >> 8, \
+ (0x000000ff & v) ])
+#}
+
+def qoi_encode( img ):
+#{
+ data = bytearray()
+
+ print(F" . Encoding {img.name}.qoi[{img.size[0]},{img.size[1]}]")
+
+ index = [ qoi_rgba_t() for _ in range(64) ]
+
+ # Header
+ #
+ data.extend( bytearray(c_uint32(0x66696f71)) )
+ data.extend( qoi_32bit( img.size[0] ) )
+ data.extend( qoi_32bit( img.size[1] ) )
+ data.extend( bytearray(c_uint8(4)) )
+ data.extend( bytearray(c_uint8(0)) )
+
+ run = 0
+ px_prev = qoi_rgba_t()
+ px_prev.r = c_uint8(0)
+ px_prev.g = c_uint8(0)
+ px_prev.b = c_uint8(0)
+ px_prev.a = c_uint8(255)
+
+ px = qoi_rgba_t()
+ px.r = c_uint8(0)
+ px.g = c_uint8(0)
+ px.b = c_uint8(0)
+ px.a = c_uint8(255)
+
+ px_len = img.size[0] * img.size[1]
+
+ paxels = [ int(min(max(_,0),1)*255) for _ in img.pixels ]
+
+ for px_pos in range( px_len ):
+ #{
+ idx = px_pos * img.channels
+ nc = img.channels-1
+
+ px.r = paxels[idx+min(0,nc)]
+ px.g = paxels[idx+min(1,nc)]
+ px.b = paxels[idx+min(2,nc)]
+ px.a = paxels[idx+min(3,nc)]
+
+ if qoi_eq( px, px_prev ):
+ #{
+ run += 1
+
+ if (run == 62) or (px_pos == px_len-1):
+ #{
+ data.extend( bytearray( c_uint8(QOI_OP_RUN | (run-1))) )
+ run = 0
+ #}
+ #}
+ else:
+ #{
+ if run > 0:
+ #{
+ data.extend( bytearray( c_uint8(QOI_OP_RUN | (run-1))) )
+ run = 0
+ #}
+
+ index_pos = qoi_colour_hash(px) % 64
+
+ if qoi_eq( index[index_pos], px ):
+ #{
+ data.extend( bytearray( c_uint8(QOI_OP_INDEX | index_pos)) )
+ #}
+ else:
+ #{
+ index[ index_pos ].r = px.r
+ index[ index_pos ].g = px.g
+ index[ index_pos ].b = px.b
+ index[ index_pos ].a = px.a
+
+ if px.a == px_prev.a:
+ #{
+ vr = int(px.r) - int(px_prev.r)
+ vg = int(px.g) - int(px_prev.g)
+ vb = int(px.b) - int(px_prev.b)
+
+ vg_r = vr - vg
+ vg_b = vb - vg
+
+ if (vr > -3) and (vr < 2) and\
+ (vg > -3) and (vg < 2) and\
+ (vb > -3) and (vb < 2):
+ #{
+ op = QOI_OP_DIFF | (vr+2) << 4 | (vg+2) << 2 | (vb+2)
+ data.extend( bytearray( c_uint8(op) ))
+ #}
+ elif (vg_r > -9) and (vg_r < 8) and\
+ (vg > -33) and (vg < 32 ) and\
+ (vg_b > -9) and (vg_b < 8):
+ #{
+ op = QOI_OP_LUMA | (vg+32)
+ delta = (vg_r+8) << 4 | (vg_b + 8)
+ data.extend( bytearray( c_uint8(op) ) )
+ data.extend( bytearray( c_uint8(delta) ))
+ #}
+ else:
+ #{
+ data.extend( bytearray( c_uint8(QOI_OP_RGB) ) )
+ data.extend( bytearray( c_uint8(px.r) ))
+ data.extend( bytearray( c_uint8(px.g) ))
+ data.extend( bytearray( c_uint8(px.b) ))
+ #}
+ #}
+ else:
+ #{
+ data.extend( bytearray( c_uint8(QOI_OP_RGBA) ) )
+ data.extend( bytearray( c_uint8(px.r) ))
+ data.extend( bytearray( c_uint8(px.g) ))
+ data.extend( bytearray( c_uint8(px.b) ))
+ data.extend( bytearray( c_uint8(px.a) ))
+ #}
+ #}
+ #}
+
+ px_prev.r = px.r
+ px_prev.g = px.g
+ px_prev.b = px.b
+ px_prev.a = px.a
+ #}
+
+ # Padding
+ for i in range(7):
+ data.extend( bytearray( c_uint8(0) ))
+ data.extend( bytearray( c_uint8(1) ))
+ bytearray_align_to( data, 16, 0 )