Query: gluproject
OS: osx
Section: 3g
Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar
GLUPROJECT(3G) GLUPROJECT(3G)NAMEgluProject - map object coordinates to window coordinatesC SPECIFICATIONGLint gluProject( GLdouble objX, GLdouble objY, GLdouble objZ, const GLdouble *model, const GLdouble *proj, const GLint *view, GLdouble* winX, GLdouble* winY, GLdouble* winZ )PARAMETERSobjX, objY, objZ Specify the object coordinates. model Specifies the current modelview matrix (as from a glGetDoublev call). proj Specifies the current projection matrix (as from a glGetDoublev call). view Specifies the current viewport (as from a glGetIntegerv call). winX, winY, winZ Return the computed window coordinates.DESCRIPTIONgluProject transforms the specified object coordinates into window coordinates using model, proj, and view. The result is stored in winX, winY, and winZ. A return value of GL_TRUE indicates success, a return value of GL_FALSE indicates failure. To compute the coordinates, let v = (objX, objY, objZ, 1.0) represented as a matrix with 4 rows and 1 column. Then gluProject computes v' as follows: v' = P X M X v where P is the current projection matrix proj, M is the current modelview matrix model (both represented as 4x4 matrices in column-major order) 'X' represents matrix multiplication. The window coordinates are then computed as follows: winX = view(0) + view(2) * (v'(0)+1)/2 winY = view(1) + view(3) * (v'(1)+1)/2 winZ = (v'(2) + 1) / 2SEE ALSOglGet, gluUnProject GLUPROJECT(3G)
Related Man Pages |
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gluunproject(3g) - redhat |
gluproject(3g) - xfree86 |
gluunproject(3g) - xfree86 |
gluunproject(3g) - suse |
gluunproject(3g) - osx |
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