more curve functions

Signed-off-by: Mattias Andrée <maandree@operamail.com>

1 files changed, 26 insertions, 3 deletions

diff --git a/info/blueshift.texinfo b/info/blueshift.texinfo
index 8f7e92a..c5c84f1 100644
--- a/info/blueshift.texinfo
+++ b/info/blueshift.texinfo
@@ -339,19 +339,28 @@ Reverse the red, green and blue curves on the
 encoding axis if @code{r}, @code{g} and @code{b}
 are @code{True}, respectively.
 
-@item invert()
+@item rgb_invert()
 Inverts the all values on the colour curves.
 This creates a negative image with inverted gamma.
 
-@item invert(rgb)
+@item rgb_invert(rgb)
 Inverts the all values on the colour curves
 if @code{rgb} is @code{True}.
 
-@item invert(r, g, b)
+@item rgb_invert(r, g, b)
 Inverts the all values on the red, green and
 blue curves if @code{r}, @code{g} and @code{b}
 are @code{True}, respectively.
 
+@item cie_invert()
+Inverts the all values on the colour curves
+using the CIE xyY colour space instead of sRGB.
+
+@item cie_invert(y)
+Inverts the all values on the colour curves
+using the CIE xyY colour space instead of sRGB,
+if @code{y} is @code{true}.
+
 @item sigmoid(r, g, b)
 An inverted sigmoid curve function is applied
 to the values of in red, green and blue curves
@@ -361,6 +370,20 @@ and @code{b} are the curve sigmoid curve
 multipliers for the red, green and blue curves,
 respectively.
 
+@item rgb_limits(rgb_min, rgb_max)
+Changes the black point to @code{rgb_min}, and
+the white point to @code{rgb_max}.
+
+@item rgb_limits(r_min, r_max, g_min, g_max, b_min, b_max)
+Changes the black point to (@code{r_min},
+@code{g_min}, @code{b_min}), and the white
+point to (@code{r_max}, @code{g_max}, @code{b_max}).
+
+@item cie_limits(y_min, y_max)
+Changes the black point to @code{y_min}, and
+the white point to @code{y_max}, using the
+CIE xyY colour space instead of sRGB.
+
 @item manipulate(rgb)
 Applies the function @code{rgb} : float
 @click{} float to colour curves.