add Android/Termux build notes from Andrew email

[goodguy/cin-manual-latex.git] / parts / Overlays.tex

diff --git a/parts/Overlays.tex b/parts/Overlays.tex
index 693c7fb1530ee3a6b5ffa29bd6f49888ccda22ca..34b202fbc9adc8ebac022d7e140e90c2c839c65a 100644 (file)
--- a/parts/Overlays.tex
+++ b/parts/Overlays.tex
@@ -1,5 +1,6 @@
 \chapter{Overlays}%
 \label{cha:overlays}
+\index{overlays}
 
 The purpose of the Overlay Modes is to control the foreground and background stacking and use blending to reshape image object boundaries.  It normally makes use of a binary type alpha blending system for all in or all out.  To use the available operations in \CGG{}, follow these steps:
 
@@ -64,7 +65,7 @@ D = Destination
 S = Source
 a = alpha
 c = chroma (color)
-|| = OR (logical operator); 
+|| = OR (logical operator);
 ? : = if (true/false) ... then (conditional ternary operator)
 \end{lstlisting}
 
@@ -137,8 +138,10 @@ The previous math forms are the only truly accurate description of each blending
 
 Note: the Graphic Art group operates principally on color, and the others operate principally on alpha.
 
-\subsection*{Normal}%
+% Leave the word Group in due to latex2html dual name conflict
+\subsection*{Normal Group}%
 \label{sub:normal2}
+\index{overlays!normal}
 
 \begin{description}
     \item[Normal:] Normal mode is the default layer mode.  The result color is the source color.  The layer on top covers the layers below it.  If you want to see anything below the top layer when you use this mode, the layer must have some transparent areas.  It is \textit{stacked on top}.  Math formula used is different than that used by Gimp; there is no SVG equivalent.
@@ -146,6 +149,7 @@ Note: the Graphic Art group operates principally on color, and the others operat
 
 \subsection*{Arithmetic Group:}%
 \label{sub:arithmetic_group}
+\index{overlays!arithmetic}
 
 Standard numerical operations.
 
@@ -159,6 +163,7 @@ Standard numerical operations.
 
 \subsection*{Porter-Duff Group}%
 \label{sub:porter-duff_group}
+\index{overlays!Porter-Duff}
 
 Industry standard compositing operators.
 
@@ -177,6 +182,7 @@ Industry standard compositing operators.
 
 \subsection*{Logical Group}%
 \label{sub:logical_group}
+\index{overlays!logical}
 
 \begin{description}
     \item[Min:] The output color is the component-wise minimum value of the source and destination colors.  There is no SVG or Gimp equivalent math formula.
@@ -190,6 +196,7 @@ Industry standard compositing operators.
 
 \subsection*{Graphical Art Group}%
 \label{sub:graphical_art_group}
+\index{overlays!graphical art}
 
 Typical operations from popular \textit{paint} packages.
 
@@ -203,3 +210,8 @@ Typical operations from popular \textit{paint} packages.
     \item[Softlight:] Darkens or lightens the colors, dependent on the source color value.  If the source color is lighter than 0.5, the destination is lightened. If the source color is darker than $0.5$, the destination is darkened, as if it were burned in.  The degree of darkening or lightening is proportional to the difference between the source color and $0.5$.  If it is equal to $0.5$, the destination is unchanged.  Using pure black or white produces a distinctly darker or lighter area, but does not result in pure black or white.  The effect is similar to shining a diffused spotlight on the destination.  A layer with pure black or white becomes markedly darker or lighter, but does not become pure black or white.  Soft light is not related to “Hard light” in anything but the name, but it does tend to make the edges softer and the colors not so bright.   Math formula is the same as used by Gimp; SVG formula differs.
 \end{description}
 
+
+%%% Local Variables:
+%%% mode: latex
+%%% TeX-master: "../CinelerraGG_Manual"
+%%% End: