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-rw-r--r--hacks/glx/tube.c387
1 files changed, 0 insertions, 387 deletions
diff --git a/hacks/glx/tube.c b/hacks/glx/tube.c
deleted file mode 100644
index 87f1872..0000000
--- a/hacks/glx/tube.c
+++ /dev/null
@@ -1,387 +0,0 @@
-/* tube, Copyright (c) 2001-2012 Jamie Zawinski <jwz@jwz.org>
- * Utility functions to create tubes and cones in GL.
- *
- * Permission to use, copy, modify, distribute, and sell this software and its
- * documentation for any purpose is hereby granted without fee, provided that
- * the above copyright notice appear in all copies and that both that
- * copyright notice and this permission notice appear in supporting
- * documentation. No representations are made about the suitability of this
- * software for any purpose. It is provided "as is" without express or
- * implied warranty.
- */
-
-#include "screenhackI.h"
-#include "tube.h"
-
-#include <math.h>
-
-typedef struct { GLfloat x, y, z; } XYZ;
-
-
-static int
-unit_tube (int faces, int smooth, int caps_p, int wire_p)
-{
- int i;
- int polys = 0;
- GLfloat step = M_PI * 2 / faces;
- GLfloat s2 = step/2;
- GLfloat th;
- GLfloat x, y, x0=0, y0=0;
- int z = 0;
-
- int arraysize, out;
- struct { XYZ p; XYZ n; GLfloat s, t; } *array;
-
- arraysize = (faces+1) * 6;
- array = (void *) calloc (arraysize, sizeof(*array));
- if (! array) abort();
- out = 0;
-
-
- /* #### texture coords are currently not being computed */
-
-
- /* side walls
- */
- th = 0;
- x = 1;
- y = 0;
-
- if (!smooth)
- {
- x0 = cos (s2);
- y0 = sin (s2);
- }
-
- if (smooth) faces++;
-
- for (i = 0; i < faces; i++)
- {
- array[out].p.x = x; /* bottom point A */
- array[out].p.y = 0;
- array[out].p.z = y;
-
- if (smooth)
- array[out].n = array[out].p; /* its own normal */
- else
- {
- array[out].n.x = x0; /* mid-plane normal */
- array[out].n.y = 0;
- array[out].n.z = y0;
- }
- out++;
-
-
- array[out].p.x = x; /* top point A */
- array[out].p.y = 1;
- array[out].p.z = y;
- array[out].n = array[out-1].n; /* same normal */
- out++;
-
-
- th += step;
- x = cos (th);
- y = sin (th);
-
- if (!smooth)
- {
- x0 = cos (th + s2);
- y0 = sin (th + s2);
-
- array[out].p.x = x; /* top point B */
- array[out].p.y = 1;
- array[out].p.z = y;
- array[out].n = array[out-1].n; /* same normal */
- out++;
-
-
- array[out] = array[out-3]; /* bottom point A */
- out++;
-
- array[out] = array[out-2]; /* top point B */
- out++;
-
- array[out].p.x = x; /* bottom point B */
- array[out].p.y = 0;
- array[out].p.z = y;
- array[out].n = array[out-1].n; /* same normal */
- out++;
-
- polys++;
- }
-
- polys++;
- if (out >= arraysize) abort();
- }
-
- glEnableClientState (GL_VERTEX_ARRAY);
- glEnableClientState (GL_NORMAL_ARRAY);
- glEnableClientState (GL_TEXTURE_COORD_ARRAY);
-
- glVertexPointer (3, GL_FLOAT, sizeof(*array), &array[0].p);
- glNormalPointer ( GL_FLOAT, sizeof(*array), &array[0].n);
- glTexCoordPointer (2, GL_FLOAT, sizeof(*array), &array[0].s);
-
- glFrontFace(GL_CCW);
- glDrawArrays ((wire_p ? GL_LINES :
- (smooth ? GL_TRIANGLE_STRIP : GL_TRIANGLES)),
- 0, out);
-
-
- /* End caps
- */
- if (caps_p)
- for (z = 0; z <= 1; z++)
- {
- out = 0;
- if (! wire_p)
- {
- array[out].p.x = 0;
- array[out].p.y = z;
- array[out].p.z = 0;
-
- array[out].n.x = 0;
- array[out].n.y = (z == 0 ? -1 : 1);
- array[out].n.z = 0;
- out++;
- }
-
- th = 0;
- for (i = (z == 0 ? 0 : faces);
- (z == 0 ? i <= faces : i >= 0);
- i += (z == 0 ? 1 : -1)) {
- GLfloat x = cos (th);
- GLfloat y = sin (th);
-
- array[out] = array[0]; /* same normal and texture */
- array[out].p.x = x;
- array[out].p.y = z;
- array[out].p.z = y;
- out++;
-
- th += (z == 0 ? step : -step);
-
- polys++;
- if (out >= arraysize) abort();
- }
-
- glVertexPointer (3, GL_FLOAT, sizeof(*array), &array[0].p);
- glNormalPointer ( GL_FLOAT, sizeof(*array), &array[0].n);
- glTexCoordPointer (2, GL_FLOAT, sizeof(*array), &array[0].s);
-
- glFrontFace(GL_CCW);
- glDrawArrays ((wire_p ? GL_LINE_LOOP : GL_TRIANGLE_FAN), 0, out);
- }
-
- free(array);
-
- return polys;
-}
-
-
-static int
-unit_cone (int faces, int smooth, int cap_p, int wire_p)
-{
- int i;
- int polys = 0;
- GLfloat step = M_PI * 2 / faces;
- GLfloat s2 = step/2;
- GLfloat th;
- GLfloat x, y, x0, y0;
-
- int arraysize, out;
- struct { XYZ p; XYZ n; GLfloat s, t; } *array;
-
- arraysize = (faces+1) * 3;
- array = (void *) calloc (arraysize, sizeof(*array));
- if (! array) abort();
- out = 0;
-
-
- /* #### texture coords are currently not being computed */
-
-
- /* side walls
- */
-
- th = 0;
- x = 1;
- y = 0;
- x0 = cos (s2);
- y0 = sin (s2);
-
- for (i = 0; i < faces; i++)
- {
- array[out].p.x = x; /* bottom point A */
- array[out].p.y = 0;
- array[out].p.z = y;
-
- if (smooth)
- array[out].n = array[out].p; /* its own normal */
- else
- {
- array[out].n.x = x0; /* mid-plane normal */
- array[out].n.y = 0;
- array[out].n.z = y0;
- }
- out++;
-
-
- array[out].p.x = 0; /* tip point */
- array[out].p.y = 1;
- array[out].p.z = 0;
-
- array[out].n.x = x0; /* mid-plane normal */
- array[out].n.y = 0;
- array[out].n.z = y0;
- out++;
-
-
- th += step;
- x0 = cos (th + s2);
- y0 = sin (th + s2);
- x = cos (th);
- y = sin (th);
-
- array[out].p.x = x; /* bottom point B */
- array[out].p.y = 0;
- array[out].p.z = y;
-
- if (smooth)
- array[out].n = array[out].p; /* its own normal */
- else
- array[out].n = array[out-1].n; /* same normal as other two */
- out++;
-
-
- if (out >= arraysize) abort();
- polys++;
- }
-
- glEnableClientState (GL_VERTEX_ARRAY);
- glEnableClientState (GL_NORMAL_ARRAY);
- glEnableClientState (GL_TEXTURE_COORD_ARRAY);
-
- glVertexPointer (3, GL_FLOAT, sizeof(*array), &array[0].p);
- glNormalPointer ( GL_FLOAT, sizeof(*array), &array[0].n);
- glTexCoordPointer (2, GL_FLOAT, sizeof(*array), &array[0].s);
-
- glFrontFace(GL_CCW);
- glDrawArrays ((wire_p ? GL_LINES : GL_TRIANGLES), 0, out);
-
-
- /* End cap
- */
- if (cap_p)
- {
- out = 0;
-
- if (! wire_p)
- {
- array[out].p.x = 0;
- array[out].p.y = 0;
- array[out].p.z = 0;
-
- array[out].n.x = 0;
- array[out].n.y = -1;
- array[out].n.z = 0;
- out++;
- }
-
- for (i = 0, th = 0; i <= faces; i++)
- {
- GLfloat x = cos (th);
- GLfloat y = sin (th);
-
- array[out] = array[0]; /* same normal and texture */
- array[out].p.x = x;
- array[out].p.y = 0;
- array[out].p.z = y;
- out++;
- th += step;
- polys++;
- if (out >= arraysize) abort();
- }
-
- glVertexPointer (3, GL_FLOAT, sizeof(*array), &array[0].p);
- glNormalPointer ( GL_FLOAT, sizeof(*array), &array[0].n);
- glTexCoordPointer (2, GL_FLOAT, sizeof(*array), &array[0].s);
-
- glFrontFace(GL_CCW);
- glDrawArrays ((wire_p ? GL_LINE_LOOP : GL_TRIANGLE_FAN), 0, out);
- }
-
- free (array);
-
- return polys;
-}
-
-
-static int
-tube_1 (GLfloat x1, GLfloat y1, GLfloat z1,
- GLfloat x2, GLfloat y2, GLfloat z2,
- GLfloat diameter, GLfloat cap_size,
- int faces, int smooth, int caps_p, int wire_p,
- int cone_p)
-{
- GLfloat length, X, Y, Z;
- int polys = 0;
-
- if (diameter <= 0) abort();
-
- X = (x2 - x1);
- Y = (y2 - y1);
- Z = (z2 - z1);
-
- if (X == 0 && Y == 0 && Z == 0)
- return 0;
-
- length = sqrt (X*X + Y*Y + Z*Z);
-
- glPushMatrix();
-
- glTranslatef(x1, y1, z1);
- glRotatef (-atan2 (X, Y) * (180 / M_PI), 0, 0, 1);
- glRotatef ( atan2 (Z, sqrt(X*X + Y*Y)) * (180 / M_PI), 1, 0, 0);
- glScalef (diameter, length, diameter);
-
- /* extend the endpoints of the tube by the cap size in both directions */
- if (cap_size != 0)
- {
- GLfloat c = cap_size/length;
- glTranslatef (0, -c, 0);
- glScalef (1, 1+c+c, 1);
- }
-
- if (cone_p)
- polys = unit_cone (faces, smooth, caps_p, wire_p);
- else
- polys = unit_tube (faces, smooth, caps_p, wire_p);
-
- glPopMatrix();
- return polys;
-}
-
-
-int
-tube (GLfloat x1, GLfloat y1, GLfloat z1,
- GLfloat x2, GLfloat y2, GLfloat z2,
- GLfloat diameter, GLfloat cap_size,
- int faces, int smooth, int caps_p, int wire_p)
-{
- return tube_1 (x1, y1, z1, x2, y2, z2, diameter, cap_size,
- faces, smooth, caps_p, wire_p,
- 0);
-}
-
-
-int
-cone (GLfloat x1, GLfloat y1, GLfloat z1,
- GLfloat x2, GLfloat y2, GLfloat z2,
- GLfloat diameter, GLfloat cap_size,
- int faces, int smooth, int cap_p, int wire_p)
-{
- return tube_1 (x1, y1, z1, x2, y2, z2, diameter, cap_size,
- faces, smooth, cap_p, wire_p,
- 1);
-}
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