[ViewVC] Diff of: Development/ray/src/rt/raytrace.c

Comparing ray/src/rt/raytrace.c (file contents):
Revision 2.82 by greg, Mon Jan 4 19:07:15 2021 UTC vs.
Revision 2.83 by greg, Sun Jan 31 18:08:04 2021 UTC

-+
+int
-+
+rayreject(              /* check if candidate hit is worse than current */
-+
+        OBJREC *o,
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+        RAY *r,
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+        double t
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+)
-+
+{
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+        OBJREC  *mnew, *mray;
-+
-+
+        if ((t <= FTINY) | (t > r->rot + FTINY))
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+                return 1;
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+        if (t < r->rot - FTINY)         /* is new hit significantly closer? */
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+                return 0;
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+                                        /* coincident, so decide... */
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+        if (o == r->ro)
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+                return 1;               /* shouldn't happen */
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+        if (r->ro == NULL)
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+                return 0;               /* ditto */
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+        if ((mnew = findmaterial(o)) == NULL)
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+                return 1;               /* new has no material */
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+        if ((mray = findmaterial(r->ro)) == NULL)
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+                return 0;               /* old has no material(!) */
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+        if (istransp(mnew->otype))
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+                return 1;               /* new is transparent */
-+
-+
+        return !istransp(mray->otype);  /* reject unless old is */
-+
+}
-+
+void
+rayhit(                 /* standard ray hit test */
+        OBJECT  *oset,

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