* include/freetype/fttrigon.h, src/base/fttrigon.c, src/base/ftbase.c,
src/base/Jamfile, src/base/rules.mk: adding trigonometric functions
to the core API (using Cordic algorithms).
* builds/top_level.mk, builds/newline, builds/detect.mk: fixed problems
with Make on Windows 2000, as well as problems when "make distclean" is
invoked on a non-Unix platform when there is no "config.mk" in the
current directory..
* builds/freetype.mk: fixed a problem with object deletions under
Dos/Windows/OS/2 systems
* src/tools: added new directory to hold tools and test programs
moved docmaker.py, glnames.py to it..
* src/tools/docmaker.py: improved the script to add the current date
at the footer of each web page (useful to distinguish between versions)
* Jamfile: fixed incorrect HDRMACRO argument.
* TODO: removed the cubic arc bbox computation note, since it has been
fixed recently..
* include/freetype/t1tables.h, include/freetype/config/ftoption.h:
formatting
2001-05-11 16:25:57 +02:00
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# compute arctangent table for CORDIC computations in fttrigon.c
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import sys, math
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2004-06-04 19:41:59 +02:00
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#units = 64*65536.0 # don't change !!
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2012-12-21 20:20:25 +01:00
|
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|
units = 180 * 2**16
|
* include/freetype/fttrigon.h, src/base/fttrigon.c, src/base/ftbase.c,
src/base/Jamfile, src/base/rules.mk: adding trigonometric functions
to the core API (using Cordic algorithms).
* builds/top_level.mk, builds/newline, builds/detect.mk: fixed problems
with Make on Windows 2000, as well as problems when "make distclean" is
invoked on a non-Unix platform when there is no "config.mk" in the
current directory..
* builds/freetype.mk: fixed a problem with object deletions under
Dos/Windows/OS/2 systems
* src/tools: added new directory to hold tools and test programs
moved docmaker.py, glnames.py to it..
* src/tools/docmaker.py: improved the script to add the current date
at the footer of each web page (useful to distinguish between versions)
* Jamfile: fixed incorrect HDRMACRO argument.
* TODO: removed the cubic arc bbox computation note, since it has been
fixed recently..
* include/freetype/t1tables.h, include/freetype/config/ftoption.h:
formatting
2001-05-11 16:25:57 +02:00
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scale = units/math.pi
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shrink = 1.0
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comma = ""
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print ""
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|
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print "table of arctan( 1/2^n ) for PI = " + repr(units/65536.0) + " units"
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|
|
|
|
2013-01-03 04:21:37 +01:00
|
|
|
for n in range(1,32):
|
2004-06-04 19:41:59 +02:00
|
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|
|
2012-12-21 20:20:25 +01:00
|
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|
x = 0.5**n # tangent value
|
* include/freetype/fttrigon.h, src/base/fttrigon.c, src/base/ftbase.c,
src/base/Jamfile, src/base/rules.mk: adding trigonometric functions
to the core API (using Cordic algorithms).
* builds/top_level.mk, builds/newline, builds/detect.mk: fixed problems
with Make on Windows 2000, as well as problems when "make distclean" is
invoked on a non-Unix platform when there is no "config.mk" in the
current directory..
* builds/freetype.mk: fixed a problem with object deletions under
Dos/Windows/OS/2 systems
* src/tools: added new directory to hold tools and test programs
moved docmaker.py, glnames.py to it..
* src/tools/docmaker.py: improved the script to add the current date
at the footer of each web page (useful to distinguish between versions)
* Jamfile: fixed incorrect HDRMACRO argument.
* TODO: removed the cubic arc bbox computation note, since it has been
fixed recently..
* include/freetype/t1tables.h, include/freetype/config/ftoption.h:
formatting
2001-05-11 16:25:57 +02:00
|
|
|
|
2012-12-21 20:20:25 +01:00
|
|
|
angle = math.atan(x) # arctangent
|
|
|
|
angle2 = round(angle*scale) # arctangent in FT_Angle units
|
* include/freetype/fttrigon.h, src/base/fttrigon.c, src/base/ftbase.c,
src/base/Jamfile, src/base/rules.mk: adding trigonometric functions
to the core API (using Cordic algorithms).
* builds/top_level.mk, builds/newline, builds/detect.mk: fixed problems
with Make on Windows 2000, as well as problems when "make distclean" is
invoked on a non-Unix platform when there is no "config.mk" in the
current directory..
* builds/freetype.mk: fixed a problem with object deletions under
Dos/Windows/OS/2 systems
* src/tools: added new directory to hold tools and test programs
moved docmaker.py, glnames.py to it..
* src/tools/docmaker.py: improved the script to add the current date
at the footer of each web page (useful to distinguish between versions)
* Jamfile: fixed incorrect HDRMACRO argument.
* TODO: removed the cubic arc bbox computation note, since it has been
fixed recently..
* include/freetype/t1tables.h, include/freetype/config/ftoption.h:
formatting
2001-05-11 16:25:57 +02:00
|
|
|
|
|
|
|
if angle2 <= 0:
|
|
|
|
break
|
2004-06-04 19:41:59 +02:00
|
|
|
|
* include/freetype/fttrigon.h, src/base/fttrigon.c, src/base/ftbase.c,
src/base/Jamfile, src/base/rules.mk: adding trigonometric functions
to the core API (using Cordic algorithms).
* builds/top_level.mk, builds/newline, builds/detect.mk: fixed problems
with Make on Windows 2000, as well as problems when "make distclean" is
invoked on a non-Unix platform when there is no "config.mk" in the
current directory..
* builds/freetype.mk: fixed a problem with object deletions under
Dos/Windows/OS/2 systems
* src/tools: added new directory to hold tools and test programs
moved docmaker.py, glnames.py to it..
* src/tools/docmaker.py: improved the script to add the current date
at the footer of each web page (useful to distinguish between versions)
* Jamfile: fixed incorrect HDRMACRO argument.
* TODO: removed the cubic arc bbox computation note, since it has been
fixed recently..
* include/freetype/t1tables.h, include/freetype/config/ftoption.h:
formatting
2001-05-11 16:25:57 +02:00
|
|
|
sys.stdout.write( comma + repr( int(angle2) ) )
|
|
|
|
comma = ", "
|
2004-06-04 19:41:59 +02:00
|
|
|
|
2012-12-21 20:20:25 +01:00
|
|
|
shrink /= math.sqrt( 1 + x*x )
|
* include/freetype/fttrigon.h, src/base/fttrigon.c, src/base/ftbase.c,
src/base/Jamfile, src/base/rules.mk: adding trigonometric functions
to the core API (using Cordic algorithms).
* builds/top_level.mk, builds/newline, builds/detect.mk: fixed problems
with Make on Windows 2000, as well as problems when "make distclean" is
invoked on a non-Unix platform when there is no "config.mk" in the
current directory..
* builds/freetype.mk: fixed a problem with object deletions under
Dos/Windows/OS/2 systems
* src/tools: added new directory to hold tools and test programs
moved docmaker.py, glnames.py to it..
* src/tools/docmaker.py: improved the script to add the current date
at the footer of each web page (useful to distinguish between versions)
* Jamfile: fixed incorrect HDRMACRO argument.
* TODO: removed the cubic arc bbox computation note, since it has been
fixed recently..
* include/freetype/t1tables.h, include/freetype/config/ftoption.h:
formatting
2001-05-11 16:25:57 +02:00
|
|
|
|
|
|
|
print
|
|
|
|
print "shrink factor = " + repr( shrink )
|
2012-12-21 20:20:25 +01:00
|
|
|
print "shrink factor 2 = " + repr( int( shrink * (2**32) ) )
|
|
|
|
print "expansion factor = " + repr( 1/shrink )
|
* include/freetype/fttrigon.h, src/base/fttrigon.c, src/base/ftbase.c,
src/base/Jamfile, src/base/rules.mk: adding trigonometric functions
to the core API (using Cordic algorithms).
* builds/top_level.mk, builds/newline, builds/detect.mk: fixed problems
with Make on Windows 2000, as well as problems when "make distclean" is
invoked on a non-Unix platform when there is no "config.mk" in the
current directory..
* builds/freetype.mk: fixed a problem with object deletions under
Dos/Windows/OS/2 systems
* src/tools: added new directory to hold tools and test programs
moved docmaker.py, glnames.py to it..
* src/tools/docmaker.py: improved the script to add the current date
at the footer of each web page (useful to distinguish between versions)
* Jamfile: fixed incorrect HDRMACRO argument.
* TODO: removed the cubic arc bbox computation note, since it has been
fixed recently..
* include/freetype/t1tables.h, include/freetype/config/ftoption.h:
formatting
2001-05-11 16:25:57 +02:00
|
|
|
print ""
|
2007-01-16 07:11:27 +01:00
|
|
|
|