http://www.mirrorservice.org/sites/master.us.finkmirrors.net/distfiles/md5/fa43fdd68d...

[xscreensaver] / hacks / glx / gflux.c

diff --git a/hacks/glx/gflux.c b/hacks/glx/gflux.c
index f45e9ed7f4ab8b3b36a6e218b1ee9a7a720a0d3f..ad14d01f2c1827e3a9f95f5ac99c03c4d905738b 100644 (file)
--- a/hacks/glx/gflux.c
+++ b/hacks/glx/gflux.c
@@ -52,6 +52,8 @@
 # define HACK_INIT                                             init_gflux
 # define HACK_DRAW                                             draw_gflux
 # define HACK_RESHAPE                                  reshape_gflux
+# define HACK_HANDLE_EVENT                             gflux_handle_event
+# define EVENT_MASK                                            PointerMotionMask
 # define gflux_opts                                            xlockmore_opts
 #define DEFAULTS                        "*delay:               20000   \n" \
                                                                                "*showFPS:      False   \n" \
@@ -102,6 +104,7 @@
 #include <math.h>
 
 #include "grab-ximage.h"
+#include "gltrackball.h"
 
 
 static enum {wire=0,solid,light,checker,textured,grab} _draw; /* draw style */
@@ -120,6 +123,9 @@ static int _waveChange = 50;
 static float _waveHeight = 1.0;
 static float _waveFreq = 3.0;
 
+static trackball_state *trackball;
+static Bool button_down_p = False;
+
 #define WIDTH 320
 #define HEIGHT 240
 
@@ -240,6 +246,43 @@ double getGrid(double,double,double);
 /* BEGINNING OF FUNCTIONS */
 
 
+Bool
+gflux_handle_event (ModeInfo *mi, XEvent *event)
+{
+  if (event->xany.type == ButtonPress &&
+      event->xbutton.button & Button1)
+    {
+      button_down_p = True;
+      gltrackball_start (trackball,
+                         event->xbutton.x, event->xbutton.y,
+                         MI_WIDTH (mi), MI_HEIGHT (mi));
+      return True;
+    }
+  else if (event->xany.type == ButtonRelease &&
+           event->xbutton.button & Button1)
+    {
+      button_down_p = False;
+      return True;
+    }
+  else if (event->xany.type == MotionNotify &&
+           button_down_p)
+    {
+      gltrackball_track (trackball,
+                         event->xmotion.x, event->xmotion.y,
+                         MI_WIDTH (mi), MI_HEIGHT (mi));
+      return True;
+    }
+
+  return False;
+}
+
+
+static void
+userRot(void)
+{
+  gltrackball_rotate (trackball);
+}
+
 /* draw the gflux once */
 void draw_gflux(ModeInfo * mi)
 {
@@ -343,6 +386,8 @@ void init_gflux(ModeInfo * mi)
     }
     gp = &gflux[screen];
 
+    trackball = gltrackball_init ();
+
     {
       char *s = get_string_resource ("mode", "Mode");
       if (!s || !*s)                       _draw = wire;
@@ -717,6 +762,7 @@ void displayTexture(void)
     glRotatef(anglex,1,0,0);
     glRotatef(angley,0,1,0);
     glRotatef(anglez,0,0,1);
+    userRot();
     glScalef(1,1,(GLfloat)_waveHeight);
     glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
        glEnable(GL_TEXTURE_2D);
@@ -756,10 +802,12 @@ void displayTexture(void)
         glEnd();
     }
 
-    time -= _speed;
-    anglex -= _rotationx;
-    angley -= _rotationy;
-    anglez -= _rotationz;
+    if (! button_down_p) {
+      time -= _speed;
+      anglex -= _rotationx;
+      angley -= _rotationy;
+      anglez -= _rotationz;
+    }
 }
 void displaySolid(void)
 {
@@ -777,6 +825,7 @@ void displaySolid(void)
     glRotatef(anglex,1,0,0);
     glRotatef(angley,0,1,0);
     glRotatef(anglez,0,0,1);
+    userRot();
     glScalef(1,1,(GLfloat)_waveHeight);
     glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
 
@@ -796,10 +845,12 @@ void displaySolid(void)
         glEnd();
     }
 
-    time -= _speed;
-    anglex -= _rotationx;
-    angley -= _rotationy;
-    anglez -= _rotationz;
+    if (! button_down_p) {
+      time -= _speed;
+      anglex -= _rotationx;
+      angley -= _rotationy;
+      anglez -= _rotationz;
+    }
 
 }
 
@@ -819,6 +870,7 @@ void displayLight(void)
     glRotatef(anglex,1,0,0);
     glRotatef(angley,0,1,0);
     glRotatef(anglez,0,0,1);
+    userRot();
     glScalef(1,1,(GLfloat)_waveHeight);
     glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
 
@@ -848,10 +900,12 @@ void displayLight(void)
         glEnd();
     }
 
-    time -= _speed;
-    anglex -= _rotationx;
-    angley -= _rotationy;
-    anglez -= _rotationz;
+    if (! button_down_p) {
+      time -= _speed;
+      anglex -= _rotationx;
+      angley -= _rotationy;
+      anglez -= _rotationz;
+    }
 }
 
 void displayWire(void)
@@ -872,6 +926,7 @@ void displayWire(void)
     glRotatef(anglex,1,0,0);
     glRotatef(angley,0,1,0);
     glRotatef(anglez,0,0,1);
+    userRot();
     glScalef(1,1,(GLfloat)_waveHeight);
     glClear(GL_COLOR_BUFFER_BIT);
 
@@ -896,10 +951,12 @@ void displayWire(void)
         glEnd();
     }
 
-    time -= _speed;
-    anglex -= _rotationx;
-    angley -= _rotationy;
-    anglez -= _rotationz;
+    if (! button_down_p) {
+      time -= _speed;
+      anglex -= _rotationx;
+      angley -= _rotationy;
+      anglez -= _rotationz;
+    }
 }
 
 /* generates new ripples */
@@ -909,6 +966,8 @@ void calcGrid(void)
     double tmp;
     static int newWave;
 
+    if (button_down_p) return;
+
     tmp = 1.0/((double)_waveChange);
     if(!(counter%_waveChange)) {
         newWave = ((int)(counter*tmp))%_waves;