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详细说明: Name glScalef , glScalex - multiply the current matrix by a general scaling matrix C Specification void glScalef(GLfloat x, GLfloat y, GLfloat z) void glScalex(GLfixed x, GLfixed y, GLfixed z)Parameters x, y, z Specify scale factors along the x, y, and z axes, respectively. Description glScale produces a nonuniform scaling along the x, y, and z axes. The three parameters indicate the desired scale factor along each of the three axes. The current matrix (see glMatrixMode) is multiplied by this scale matrix, and the product re places the current matrix as if glScale were called with the following matrix as its argument: ( x 0 0 0 0 y 0 0 0 0 z 0 0 0 0 1 ) If the matrix mode is either GL_MODELVIEW or GL_PROJECTION, all objects drawn after glScale is called are scaled. Use glPushMatrix and glPopMatrix to save and restore the unscaled coordinate system. Notes If scale factors other than 1 are applied to the modelview matrix and lighting is enabled, lighting often appears wrong. In that case, enable automatic normalization of normals by calling glEnable with the argument GL_NORMALIZE. Copyright Copyright © 2003 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/. See Also glEnable, glMatrixMode, glMultMatrix, glPushMatrix, glRotate, glTranslate ...展开收缩
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