-->
-<chapter><title>swfc Basics</title>
+<chapter title="Basic usage of swfc">
<section><title>Calling swfc</title>
.end
</code>
+ <p>
The <c>.box</c> command creates the box. Every object that is created must also be explicitly
put into the scene using <c>.put</c> to become visible.
+ </p>
+ <p>
+ Change, on the other hand, modifies an already existing object.
+ It works gradually: In the example above, the change happens over 100 frames.
+ If you want to change an object suddently from one frame to the next, you
+ would use the <c>.jump</c> command.
+ </p>
</section>
<section><title>Color transforms</title>
+<p>
+You can define a number of parameters in the <c>.put</c>, <c>.change</c> and <c>.jump</c>
+tags. Among those are the color transform parameters <c>red</c>, <c>green</c>,
+<c>blue</c> and <c>alpha</c>.
+Furthermore, for convenience, there's also <c>luminance</c>, which sets <c>red</c>, <c>green</c> and
+<c>blue</c> in one go.
+</p>
+<p>
+Each one of these consists of two parts: The multiplicator and the shift.
+The syntax is
+<c> ±<multiplicator>±<shift> </c>.
+So, for example, to make an object 50% brighter, you would use
+<c>luminance=+128</c>. Notice that all color components inside the transformed object in the range 128-255
+will be mapped to 255 with this. To map 0 to 128, 255 to 255, but 128 to 192, you would
+use <c>luminance=0.5+128</c>.
+</p>
+<p>
+You can also specify negative values for both <c><mutliplicator></c> and <c><shift></c>.
+This makes it e.g. possible to invert an object: <c>luminance=-1+255</c>.
+</p>
+<p>
+The following example demonstrates a few of the possible transforms:
+</p>
+
+
<code lang="swfc">
-.flash name="cxform.swf" version=5
+.flash name="cxform.swf" version=5 fps=25
.jpeg s1 "photo.jpeg" quality=80%
.put s1 x=50 y=50 scalex=110 scaley=110
- .frame 100
+ .frame 50
.change s1 x=0 y=0 scalex=210 scaley=210 red=-1+255 green=-1+255 blue=-1+255 #invert
- .frame 200
+ .frame 100
.change s1 x=100 y=50 scalex=110 scaley=110 red=0 green=+0 blue=+0 #remove red
- .frame 300
+ .frame 150
.change s1 x=0 y=0 scalex=210 scaley=210 red=+0 green=2 blue=-1+255 #amplify green, invert blue
- .frame 400
+ .frame 200
.change s1 x=50 y=100 scalex=110 scaley=110 red=2-128 green=-2+255 blue=+0.7+40 #alien glow
- .frame 500
+ .frame 250
.change s1 x=0 y=0 scalex=210 scaley=210 red=8-1024 green=8-1024 blue=8-1024 #palette reduce
- .frame 600
+ .frame 300
.change s1 x=0 y=0 scalex=210 scaley=210 red=+0 green=+0 blue=+0 #back to normal
- .frame 700
+ .frame 350
.change s1 x=105 y=105 scalex=0 scaley=0 luminance=0 #fadeout
.end
</code>
-
+
+A very useful fact is also that you can color transform the alpha component.
+So to fade any object into the background, you would simply transform it's
+alpha color: E.g. <c>alpha=64</c> would make the object 75% transparent.
+This is used in an example further below.
</section>
</chapter>
-<chapter><title>Fonts</title>
+<chapter title="Fonts">
<section>
.end
</code>
+<note>
+The text argument expects UTF-8 strings. So if you want to
+pass any special characters (umlauts, digraphs etc.), they have to
+be UTF-8 encoded.
+</note>
+
Besides TrueType fonts, swfc also supports native SWF fonts.
If you have a SWF with a font you would like to use, do a
<shell>
<section>
<p>
So much for the basics. Now let's go to the more advanced
-functionality.
+functionality around fonts.
</p>
<p>
<code lang="swfc">
.flash name="fontoutline.swf"
.font Arial "Arial.swf"
- .textshape helloworld font=Arial text="Hello World"
- .filled filled_helloworld outline=helloworld fill=blue line=5 color=green
+ .textshape helloworld font=Arial size=200% text="Hello World"
+ .filled filled_helloworld outline=helloworld fill=blue line=3 color=green
.put filled_helloworld
.end
</code>
.end
</code>
+While at it, you can also fill with an image:
+
+<code lang="swfc">
+.flash name="fontimage.swf"
+ .font courier "Courier.swf"
+ .jpeg beach "beach.jpg"
+ .textshape text font=courier text="HOLIDAY"
+
+ .filled filled_text outline=text fill=beach line=1 color=#2c2c2c
+ .put filled_text scale=200%
+.end
+</code>
+
But let's get back to normal <c>.text</c> characters.
The following demonstrates that you can treat objects defined
with <c>.text</c> like normal shapes, i.e., scale them, move them, and use
.flash name="text5.swf"
.font courier "Courier.swf"
.text hithere text="HELLO" font=courier size=200%
-.swf scene Scenery50.swf
+.jpeg scenery "scenery.jpg"
.frame 0
.startclip hithere pin=center x=100 y=75 scale=50% #text clips...
- .put scene # ...the image "scene"
+ .put scenery scale=50%
.end
.frame 100
.change hithere rotate+=360 pin=center scale=100%
.end
</code>
+<p>
+The last two examples look similar, but their underlying structure
+is different: The first is a shape object filled with
+image data (that is, a texture), while the second uses a normal
+text object to clip an rectangular image.
+</p>
+
+<p>
Also, <c>.text</c> takes a color attribute (that's actually
the poor man's version of the more advanced filling options
that <c>.textshape</c> in conjunction with <c>.filled</c> offers),
which is used here together with the alpha parameter of <c>.change</c>:
+</p>
<code lang="swfc">
.flash name="text6.swf"
</section>
+<section>
+
+A special type of text in SWF is the <c>edittext</c>, which
+can be modified by the viewer. It's content can also be queried
+and set from ActionScript (see below).
+You can generate this type of text with the <c>.edittext</c> command:
+
+<code lang="swfc">
+.flash name="edittext.swf" bbox=210x110
+ .font Arial "Arial.swf"
+ .edittext myedittext font=Arial size=20%
+ width=200 height=100
+ color=blue border multiline wordwrap
+ text="Edit me!\nClick with your mouse on this text to edit it."
+ .put myedittext x=3 y=3
+.end
+</code>
+
+</section>
+
</chapter>
-<chapter><title>ActionScript</title>
+<chapter title="ActionScript">
<section>
<c>swfc</c> has Actionscript support.
.frame 0
.action:
- _root.angle += 0.3;
+ _root.angle += 0.05;
mybox._x = 100*Math.cos(_root.angle)+100;
mybox._y = 100*Math.sin(_root.angle)+100;
.end
</chapter>
-<chapter><title>Buttons</title>
+<chapter title="Buttons">
<p>
Actionscript comes in handy when dealing with SWF Buttons.
</p>
git.asbjorn.biz / swftools.git / blobdiff