XYL_DISPLAY_OPENGL
XYL_DISPLAY_OPENGL,
a C++ code which
reads XYL information defining points and lines in 2D,
and draws a picture using OPENGL.
The point and line information is stored in a pair of files,
called the XYL format. Essentially, the first file
stores a list of point coordinates, and the second lists point indices
to be connected in lines.
Usage:
xyl_display_opengl prefix
where
-
prefix is the common prefix for the point and line data files.
reads the point coordinate data from prefix.xy and the
point index lists from prefix.xyl and displays a plot of the points
and lines.
Licensing:
The information on this web page is distributed under the MIT license.
Languages:
xyl_display_opengl is available in
a C++ version.
Related Data and Programs:
opengl_test,
a C++ code which
uses opengl() to display graphic images on the screen;
Reference:
-
Edward Angel,
Interactive Computer Graphics,
a Top-Down Approach with OpenGL,
Addison-Wesley, 2000,
ISBN: 0-201-38597-X,
LC: T385.A514.
-
Renate Kempf, Chris Frazier, editors,
OpenGL Reference Manual,
Fourth Edition,
Addison-Wesley, 2004,
ISBN: 032117383X,
LC: T385.O642
-
Mason Woo, Jackie Neider, Tom Davis,
OpenGL Programming Guide,
Addison-Wesley, 1997,
ISBN: 0-201-46138-2,
LC: T385.N435
-
Richard Wright, Michael Sweet,
OpenGL Superbible,
Third Edition,
Sams, 2004,
ISBN: 0672326019,
LC: T385.W73
-
https://www.opengl.org/
The official OpenGL site.
Source Code:
Examples and Tests:
-
house.xy,
point coordinates.
-
house.xyl,
point indices to be connected as lines.
-
house.png,
a PNG image of
the screen generated by Open GL.
List of Routines:
-
MAIN is the main program for XYL_DISPLAY_OPENGL.
-
CH_EQI is true if two characters are equal, disregarding case.
-
CH_TO_DIGIT returns the integer value of a base 10 digit.
-
DISPLAY generates the graphics output.
-
DTABLE_DATA_READ reads the data from a real TABLE file.
-
DTABLE_HEADER_READ reads the header from a real TABLE file.
-
MYINIT initializes OpenGL state variables dealing with viewing and attributes.
-
R8_MAX returns the maximum of two R8.
-
R82VEC_MAX returns the maximum value in a R82VEC.
-
R82VEC_MIN returns the minimum value in a R82VEC.
-
S_CAT concatenates two strings to make a third string.
-
S_LEN_TRIM returns the length of a string to the last nonblank.
-
S_TO_I4 reads an I4 from a string.
-
S_TO_I4VEC reads an I4VEC from a string.
-
S_TO_R8 reads an R8 from a string.
-
S_TO_R8VEC reads an R8VEC from a string.
-
S_WORD_COUNT counts the number of "words" in a string.
-
TIMESTAMP prints the current YMDHMS date as a time stamp.
-
TIMESTRING returns the current YMDHMS date as a string.
-
XY_DATA_READ reads the data in an XY file.
-
XY_HEADER_READ reads the header of an XY file.
-
XYL_DATA_READ reads the data in an XYL file.
-
XYL_HEADER_READ determines the number of line items in an XYL file.
You can go up one level to
the C++ source codes.
Last revised on 06 January 2009.