GLEVALPOINT - Online Linux Manual PageSection : 3G
NAME"glEvalPoint1, glEvalPoint2 − generate and evaluate a single point in a mesh
C SPECIFICATIONvoid glEvalPoint1( GLint i ) void glEvalPoint2( GLint i, GLint j )
PARAMETERSi Specifies the integer value for grid domain variable i. j Specifies the integer value for grid domain variable j (glEvalPoint2 only).
DESCRIPTIONglMapGrid and glEvalMesh are used in tandem to efficiently generate and evaluate a series of evenly spaced map domain values. glEvalPoint can be used to evaluate a single grid point in the same gridspace that is traversed by glEvalMesh. Calling glEvalPoint1 is equivalent to calling \f7
glEvalCoord1( icdotDELTAu~+~u1 );
where DELTAu~=~(u2-u1)/n and n, u1, and u2 are the arguments to the most recent glMapGrid1 command. The one absolute numeric requirement is that if i~=~n, then the value computed from icdotDELTAu~+~u1 is exactly u2. In the two-dimensional case, glEvalPoint2, let DELTAu~=~mark(u2-u1)/n
DELTAv~=~mark(v2-v1)/m,
where n, u1, u2, m, v1, and v2 are the arguments to the most recent glMapGrid2 command. Then the glEvalPoint2 command is equivalent to calling \f7
glEvalCoord2( icdotDELTAu~+~u1, jcdotDELTAv~+~v1 );
The only absolute numeric requirements are that if i~=~n, then the value computed from icdotDELTAu~+~u1 is exactly u2, and if j~=~m, then the value computed from icdotDELTAv~+~v1 is exactly v2.
ASSOCIATED GETSglGet with argument GL_MAP1_GRID_DOMAIN
glGet with argument GL_MAP2_GRID_DOMAIN
glGet with argument GL_MAP1_GRID_SEGMENTS
glGet with argument GL_MAP2_GRID_SEGMENTS
SEE ALSOglEvalCoord(3G), glEvalMesh(3G), glMap1(3G), glMap2(3G), glMapGrid(3G) 0
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Online Linux Manual Page : Version : Online Linux Manual Page - Fedora.40 - march=x86-64 - mtune=generic - 24.12.29
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ERROR : Need New Coding : (rof_escape_sequence|91|g___lEvalPoint.3G|46|\f7|\f7
) (rof_EQ_stradd_html|19|g___lEvalPoint.3G|47|cdot|glEvalCoord1( i$^cdot^DELTA u ~+~ u sub 1$ );
) (rof_EQ_stradd_html|19|g___lEvalPoint.3G|47|DELTA|glEvalCoord1( i$^cdot^DELTA u ~+~ u sub 1$ );
) (rof_EQ_stradd_html|19|g___lEvalPoint.3G|54|DELTA|$DELTA u ~=~ ( u sub 2 - u sub 1 ) ^/^ n$
) (rof_EQ_stradd_html|19|g___lEvalPoint.3G|62|cdot|$i ^cdot^ DELTA u ~+~ u sub 1$ is exactly $u sub 2$.
) (rof_EQ_stradd_html|19|g___lEvalPoint.3G|62|DELTA|$i ^cdot^ DELTA u ~+~ u sub 1$ is exactly $u sub 2$.
) (rof_EQ_stradd_html|19|g___lEvalPoint.3G|67|DELTA|$DELTA u ~=~ mark ( u sub 2 - u sub 1 ) ^/^ n$
) (rof_EQ_stradd_html|19|g___lEvalPoint.3G|69|DELTA|$DELTA v ~=~ mark ( v sub 2 - v sub 1 ) ^/^ m,$
) (rof_escape_sequence|91|g___lEvalPoint.3G|78|\f7|\f7
) (rof_EQ_stradd_html|19|g___lEvalPoint.3G|79|cdot|glEvalCoord2( i$^cdot^DELTA u ~+~ u sub 1$, j$^cdot^DELTA v ~+~ v sub 1$ );
) (rof_EQ_stradd_html|19|g___lEvalPoint.3G|79|DELTA|glEvalCoord2( i$^cdot^DELTA u ~+~ u sub 1$, j$^cdot^DELTA v ~+~ v sub 1$ );
) (rof_EQ_stradd_html|19|g___lEvalPoint.3G|79|cdot|glEvalCoord2( i$^cdot^DELTA u ~+~ u sub 1$, j$^cdot^DELTA v ~+~ v sub 1$ );
) (rof_EQ_stradd_html|19|g___lEvalPoint.3G|79|DELTA|glEvalCoord2( i$^cdot^DELTA u ~+~ u sub 1$, j$^cdot^DELTA v ~+~ v sub 1$ );
) (rof_EQ_stradd_html|19|g___lEvalPoint.3G|85|cdot|$i ^cdot^DELTA u ~+~ u sub 1$ is exactly $u sub 2$,
) (rof_EQ_stradd_html|19|g___lEvalPoint.3G|85|DELTA|$i ^cdot^DELTA u ~+~ u sub 1$ is exactly $u sub 2$,
) (rof_EQ_stradd_html|19|g___lEvalPoint.3G|87|cdot|$i ^cdot^DELTA v ~+~ v sub 1$ is exactly $v sub 2$.
) (rof_EQ_stradd_html|19|g___lEvalPoint.3G|87|DELTA|$i ^cdot^DELTA v ~+~ v sub 1$ is exactly $v sub 2$.
)