18 lines
461 B
C
18 lines
461 B
C
#include <math.h>
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#include "private.h"
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/* Set the Perspective */
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void APIENTRY gluPerspective(GLfloat angle, GLfloat aspect,
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GLfloat znear, GLfloat zfar) {
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GLfloat fW, fH;
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fH = tanf(angle * (F_PI / 360.0f)) * znear;
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fW = fH * aspect;
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glFrustum(-fW, fW, -fH, fH, znear, zfar);
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}
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void APIENTRY gluOrtho2D(GLdouble left, GLdouble right, GLdouble bottom, GLdouble top) {
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glOrtho(left, right, bottom, top, -1.0f, 1.0f);
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}
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