BEZIER_SURFACE
Routines for Bezier Surface Information

BEZIER_SURFACE is a MATLAB library which reads, writes, prints, and otherwise manipulates the data that defines a Bezier surface.

Licensing:

The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.

Languages:

BEZIER_SURFACE is available in a FORTRAN90 version and a MATLAB version.

Related Data and Programs:

BEZIER_SURFACE, a directory which contains a description and examples of the Bezier Surface file format.

BEZIER_SURFACE_DISPLAY, a MATLAB program which can read a pair of Bezier Surface data files and display the surface.

TABLE, a format which is used for both the node and rectangle files.

Reference:

1. Edward Angel,
   Interactive Computer Graphics, a Top-Down Approach with OpenGL,
   Addison-Wesley, 2000,
   ISBN: 0-201-38597-X,
   LC: T385.A514.
2. The Wikipedia article "Utah teapot" in http://en.wikipedia.org/wiki/Utah_teapot

Source Code:

• bezier_patch_evaluate.m evaluates a Bezier patch.
• bezier_surface_neighbors.m determines Bezier rectangle neighbors.
• bezier_surface_node_print.m prints nodes.
• bezier_surface_node_read.m reads nodes from a node file.
• bezier_surface_node_size.m counts nodes in a node file.
• bezier_surface_node_write.m writes nodes to a node file.
• bezier_surface_rectangle_print.m prints rectangles.
• bezier_surface_rectangle_read.m reads rectangles from a rectangle file.
• bezier_surface_rectangle_size.m counts rectangles in a rectangle file.
• bezier_surface_rectangle_write.m writes rectangle to a rectangle file.
• ch_cap.m capitalizes a single character.
• ch_eqi.m is a case insensitive comparison of two characters for equality.
• ch_to_digit.m returns the integer value of a base 10 digit.
• file_column_count.m counts the number of columns in the first line of a file.
• file_row_count.m counts the number of row records in a file.
• i4mat_data_read.m reads data from an I4MAT file.
• i4mat_header_read.m reads the header from an I4MAT file.
• i4mat_transpose_print.m prints an I4MAT, transposed.
• i4mat_transpose_print_some.m prints some of the transpose of an I4MAT.
• i4mat_write.m writes an I4MAT file.
• i4row_compare.m compares two rows of an I4ROW.
• i4row_sort_a.m ascending sorts the rows of an I4ROW.
• i4row_swap.m swaps two rows of an I4ROW.
• r8mat_data_read.m reads data from an R8MAT file.
• r8mat_header_read.m reads the header from an R8MAT file.
• r8mat_transpose_print.m prints an R8MAT, transposed.
• r8mat_transpose_print_some.m prints some of an R8MAT, transposed.
• r8mat_write.m writes an R8MAT file.
• s_len_trim.m returns the length of a string to the last nonblank.
• s_to_r8.m reads a double precision number from a string.
• s_to_r8vec.m reads a double precision vector from a string.
• s_word_count.m counts the number of "words" in a string.
• sort_heap_external.m externally sorts a list of items into ascending order.
• timestamp.m prints the current YMDHMS date as a time stamp.

Examples and Tests:

• bezier_surface_test.m, a sample calling program.
• bezier_surface_test01.m, tests routines to read a Bezier surface definition.
• bezier_surface_test02.m, tests BEZIER_SURFACE_NEIGHBORS.
• bezier_surface_test03.m, tests BEZIER_PATCH_EVALUATE.
• bezier_surface_test_output.txt, the output from the sample calling program.
• ../../data/bezier_surface/teapot_nodes.txt the node file for the teapot example.
• ../../data/bezier_surface/teapot_rectangles.txt the rectangle file for the teapot example.

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