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gtk-demo: Fix build without sincos

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We are getting into trouble here if
sincos isn't detected but still present
in headers. Avoid that.

Also fix the other copy of gtkgears.c.
This commit is contained in:
Matthias Clasen 2023-02-18 10:00:10 -05:00
parent 9f64202a60
commit 6cb612ac15
2 changed files with 24 additions and 20 deletions
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22
demos/gtk-demo/gtkgears.c
View File

@ -48,14 +48,16 @@
#define VERTICES_PER_TOOTH 34 #define VERTICES_PER_TOOTH 34
#define GEAR_VERTEX_STRIDE 6 #define GEAR_VERTEX_STRIDE 6
#ifndef HAVE_SINCOS static inline void
static void _sincos (double x, double *_sin, double *_cos)
sincos (double x, double *_sin, double *_cos)
{ {
#ifdef HAVE_SINCOS
sincos (x, _sin, _cos);
#else
*_sin = sin (x); *_sin = sin (x);
*_cos = cos (x); *_cos = cos (x);
}
#endif #endif
}
/** /**
* Struct describing the vertices in triangle strip * Struct describing the vertices in triangle strip
@ -307,11 +309,11 @@ create_gear (GLfloat inner_radius,
struct point p[7]; struct point p[7];
/* Calculate needed sin/cos for various angles */ /* Calculate needed sin/cos for various angles */
sincos(i * 2.0 * G_PI / teeth + da * 0, &s[0], &c[0]); _sincos(i * 2.0 * G_PI / teeth + da * 0, &s[0], &c[0]);
sincos(i * 2.0 * M_PI / teeth + da * 1, &s[1], &c[1]); _sincos(i * 2.0 * M_PI / teeth + da * 1, &s[1], &c[1]);
sincos(i * 2.0 * M_PI / teeth + da * 2, &s[2], &c[2]); _sincos(i * 2.0 * M_PI / teeth + da * 2, &s[2], &c[2]);
sincos(i * 2.0 * M_PI / teeth + da * 3, &s[3], &c[3]); _sincos(i * 2.0 * M_PI / teeth + da * 3, &s[3], &c[3]);
sincos(i * 2.0 * M_PI / teeth + da * 4, &s[4], &c[4]); _sincos(i * 2.0 * M_PI / teeth + da * 4, &s[4], &c[4]);
GEAR_POINT(p[0], r2, 1); GEAR_POINT(p[0], r2, 1);
GEAR_POINT(p[1], r2, 2); GEAR_POINT(p[1], r2, 2);
@ -520,7 +522,7 @@ void perspective(GLfloat *m, GLfloat fovy, GLfloat aspect, GLfloat zNear, GLfloa
identity(tmp); identity(tmp);
deltaZ = zFar - zNear; deltaZ = zFar - zNear;
sincos(radians, &sine, &cosine); _sincos(radians, &sine, &cosine);
if ((deltaZ == 0) || (sine == 0) || (aspect == 0)) if ((deltaZ == 0) || (sine == 0) || (aspect == 0))
return; return;

22
tests/gtkgears.c
View File

@ -48,14 +48,16 @@
#define VERTICES_PER_TOOTH 34 #define VERTICES_PER_TOOTH 34
#define GEAR_VERTEX_STRIDE 6 #define GEAR_VERTEX_STRIDE 6
#ifndef HAVE_SINCOS static inline void
static void _sincos (double x, double *_sin, double *_cos)
sincos (double x, double *_sin, double *_cos)
{ {
#ifdef HAVE_SINCOS
sincos (x, _sin, _cos);
#else
*_sin = sin (x); *_sin = sin (x);
*_cos = cos (x); *_cos = cos (x);
}
#endif #endif
}
/** /**
* Struct describing the vertices in triangle strip * Struct describing the vertices in triangle strip
@ -306,11 +308,11 @@ create_gear (GLfloat inner_radius,
struct point p[7]; struct point p[7];
/* Calculate needed sin/cos for various angles */ /* Calculate needed sin/cos for various angles */
sincos(i * 2.0 * G_PI / teeth + da * 0, &s[0], &c[0]); _sincos(i * 2.0 * G_PI / teeth + da * 0, &s[0], &c[0]);
sincos(i * 2.0 * M_PI / teeth + da * 1, &s[1], &c[1]); _sincos(i * 2.0 * M_PI / teeth + da * 1, &s[1], &c[1]);
sincos(i * 2.0 * M_PI / teeth + da * 2, &s[2], &c[2]); _sincos(i * 2.0 * M_PI / teeth + da * 2, &s[2], &c[2]);
sincos(i * 2.0 * M_PI / teeth + da * 3, &s[3], &c[3]); _sincos(i * 2.0 * M_PI / teeth + da * 3, &s[3], &c[3]);
sincos(i * 2.0 * M_PI / teeth + da * 4, &s[4], &c[4]); _sincos(i * 2.0 * M_PI / teeth + da * 4, &s[4], &c[4]);
GEAR_POINT(p[0], r2, 1); GEAR_POINT(p[0], r2, 1);
GEAR_POINT(p[1], r2, 2); GEAR_POINT(p[1], r2, 2);
@ -519,7 +521,7 @@ static void perspective(GLfloat *m, GLfloat fovy, GLfloat aspect, GLfloat zNear,
identity(tmp); identity(tmp);
deltaZ = zFar - zNear; deltaZ = zFar - zNear;
sincos(radians, &sine, &cosine); _sincos(radians, &sine, &cosine);
if ((deltaZ == 0) || (sine == 0) || (aspect == 0)) if ((deltaZ == 0) || (sine == 0) || (aspect == 0))
return; return;