TITLE:Flash SWF format - Shape
- ベクター画像を表現するタグ。 ビットマップ貼り付けやグラデーションも対応。あとモーフも。
#contents
* (2) DefineShape [#tag2]
- http://www.m2osw.com/swf_tag_defineshape
+---------------------------------------------------+
| tag & length | shape_id | rect | shape_with_style |
| 2 | | | |
+---------------------------------------------------+
< 2 or 6 bytes ><-2 bytes><-RECT->
<------------------ length -------->
- shape_with_style
+------------------------------------------------------+
|fill_style|line_style|fill_bits|line_bits| shape |
| array | array | count | count | records |
+------------------------------------------------------+
<-- STYLES --> <-4 bits-><-4 bits-><-- SHAPE -->
-- fill_style_array
+---------------------------------------+
| count | fill_style | fill_style | ... |
+---------------------------------------+
<-1 byte><----- count 個分 ------------->
--- fill_style (solid: type=0x00)
+-------------------------------+
| type | red | green | blue |
+-------------------------------+
<-1 byte><----- 3 bytes ------>
--- fill_style (gradient: type=0x10, 0x12, 0x13)
+-----------------------------+
| type | matrix | gradient |
+-----------------------------+
<-1 byte><-MATRIX->
* gradient
+--------------------------------------------------------+
| pad | count | gradient_record | gradient_record | ... |
+--------------------------------------------------------+
<4bits><4bits-> <------ count 個分 ---------->
* gradient_record
+-----------------------------------+
| position | red | green | blue |
+-----------------------------------+
<- 1 byte ->< 1byte>< 1byte>< 1byte >
--- fill_style (bitmap: type=0x40, 0x41, 0x42, 0x43)
+-------------------------------------+
| type | bitmap_ref | bitmap_matrix |
+-------------------------------------+
<-1 byte> <- 2 bytes -> <-MATRIX->
-- line_style_array
+---------------------------------------+
| count | line_style | line_style | ... |
+---------------------------------------+
<-1 byte><----- count 個分 ------------->
--- line_style
+--------------------------------+
| width | red | green | blue |
+--------------------------------+
<-2bytes><----- 3 bytes ------>
-- shape_record
--- shape_record_end
+--------+
| 000000 |
+--------+
<-6 bits->
--- shape_record_setup
+-----------------------------------------------------+
| 00WXYZ | move | move| move| fill | fill | line |
| | size | x | y | style0 | style1 | style |
+-----------------------------------------------------+
<-6 bits-><5bits>/move\/move\/numfill\/numfill\/numline\
\size/\size/\ bits /\ bits / \ bits /
<--- if Z==1 ---> <if Y==1><if X==1><if W==1>
--- shape_record_edge
+--------------------------+
| 1 |edge_type| coord_size |
+--------------------------+
<1bit><-1bit-> <- 4 bits -->
--- shape_record_edge (edge_type:0) spline curve
+-----------------------------------------------+
| 1 | 0 | coord |control|control| anchor| anchor|
| | | size |delta_x|delta_y|delta_x|delta_y|
+-----------------------------------------------+
<1bi 1bi><4bits>/coord \/coord \/coord \/coord \
\size+2/\size+2/\size+2/\size+2/
--- shape_record_edge (edge_type:1) straight line
+-----------------------------------+
| 1 | 1 | coord |x_and| delta| delta| slanted line (斜線)
| | | size |y = 1| _x | _y |
+-----------------------------------+
<1bi 1bi><4bits><1bit>/coord \/coord \
\size+2/\size+2/
----------------------------------+
... |x_and|has_x |delta| horizontal line
|y = 0|or_y=0| _x |
|has_x |delta| vertical line
|or_y=1| _y |
----------------------------------+
<1bi 1bi><4bits><1bit><1bit> /coord \
\size+2/
