Category : Printer + Display Graphics
Archive   : AVRIL11.ZIP
Filename : INPUT.C

 
Output of file : INPUT.C contained in archive : AVRIL11.ZIP
/* Simple keyboard and mouse support for AVRIL demos */

/* Written by Bernie Roehl, April 1994 */

/* Copyright 1994 by Bernie Roehl */

#include
#include /* isupper() */
#include /* coreleft() */

#include "avril.h"
#include "avrilkey.h"
#include "avrildrv.h"

vrl_Object *active_object = NULL;

static int showhud = 0;

void vrl_ApplicationDrawOver(vrl_RenderStatus *stat)
{
vrl_Camera *cam = vrl_WorldGetCamera();
char buff[100];
if (vrl_ConfigGetPositionDisplay())
{
sprintf(buff, "Position: %ld,%ld",
(long) floor(scalar2float(vrl_CameraGetX(cam))),
(long) floor(scalar2float(vrl_CameraGetZ(cam))));
vrl_UserInterfaceDropText(10, 10, 15, buff);
}
if (vrl_ConfigGetFramerateDisplay())
{
sprintf(buff, "Frames/sec: %ld", vrl_SystemGetFrameRate());
vrl_UserInterfaceDropText(5, 170, 15, buff);
}
if (vrl_ConfigGetCompassDisplay())
vrl_UserInterfaceDrawCompass(cam, 250, 40, 35);
if (showhud)
{
sprintf(buff, "%c%c%c",
stat->memory ? 'M' : ' ',
stat->objects ? 'O' : ' ',
stat->facets ? 'F' : ' ');
vrl_UserInterfaceDropText(10, 20, 15, buff);
}
if (vrl_MouseGetUsage())
{
vrl_Device *dev = vrl_MouseGetPointer();
if (dev)
{
int x = vrl_DeviceGetCenter(dev, X);
int y = vrl_DeviceGetCenter(dev, Y);
int deadx = vrl_DeviceGetDeadzone(dev, X);
int deady = vrl_DeviceGetDeadzone(dev, Y);
/* white inner box */
vrl_DisplayLine(x - deadx, y - deady, x + deadx, y - deady, 15);
vrl_DisplayLine(x - deadx, y + deady, x + deadx, y + deady, 15);
vrl_DisplayLine(x - deadx, y - deady, x - deadx, y + deady, 15);
vrl_DisplayLine(x + deadx, y - deady, x + deadx, y + deady, 15);
/* black outer box */
vrl_DisplayLine(x-deadx-1, y-deady-1, x+deadx+1, y-deady-1, 0);
vrl_DisplayLine(x-deadx-1, y+deady+1, x+deadx+1, y+deady+1, 0);
vrl_DisplayLine(x-deadx-1, y-deady-1, x-deadx-1, y+deady+1, 0);
vrl_DisplayLine(x+deadx+1, y-deady-1, x+deadx+1, y+deady+1, 0);
}
}
}

static void process_key(int c)
{
vrl_Camera *cam = vrl_WorldGetCamera();
switch (c)
{
case 'o': cam->ortho = !cam->ortho; break;
case ' ': vrl_MouseSetUsage(!vrl_MouseGetUsage()); break;
case 'w': vrl_DisplaySetDrawMode(!vrl_DisplayGetDrawMode()); break;
case 'q': case 0x1B: vrl_SystemStopRunning(); break;
case 'f': vrl_ConfigToggleFramerateDisplay(); break;
case 'c': vrl_ConfigToggleCompassDisplay(); break;
case 'p': vrl_ConfigTogglePositionDisplay(); break;
case 'd': showhud = !showhud; break;
case '_': vrl_WorldToggleHorizon(); break;
case '+': vrl_CameraSetZoom(cam, vrl_CameraGetZoom(cam) * 1.1); break;
case '-': vrl_CameraSetZoom(cam, vrl_CameraGetZoom(cam) * 0.9); break;
case '=': vrl_CameraSetZoom(cam, 1.0); break;
case 'h':
{
vrl_Scalar newhither = vrl_CameraGetHither(cam) - vrl_WorldGetMovestep();
if (newhither < 1) newhither = 1;
vrl_CameraSetHither(cam, newhither);
}
break;
case 'H':
{
vrl_Scalar newhither = vrl_CameraGetHither(cam) + vrl_WorldGetMovestep();
if (newhither < 1) newhither = 1;
vrl_CameraSetHither(cam, newhither);
}
break;
default: break;
}
vrl_SystemRequestRefresh();
}

void vrl_ApplicationKey(unsigned int c)
{
static int lastkey = 0;
if (c == INSKEY)
{
int i;
for (i = 0; i < 100; ++i)
{
process_key(lastkey);
vrl_SystemRender(vrl_ObjectUpdate(vrl_WorldGetObjectTree()));
}
}
else
process_key(lastkey = c);
}

void vrl_ApplicationMouseUp(int x, int y, unsigned int buttons)
{
vrl_Object *old_active = active_object;
if ((buttons & 1) == 0)
return;
vrl_RenderMonitorInit(x, y);
vrl_SystemRender(NULL); /* redraw screen */
if (vrl_RenderMonitorRead(&active_object, NULL, NULL))
{
if (active_object == old_active)
active_object = NULL;
else
vrl_ObjectSetHighlight(active_object, 1);
}
if (old_active)
vrl_ObjectSetHighlight(old_active, 0);
vrl_SystemRequestRefresh();
}

static int object_mover(vrl_Object *obj, vrl_Device *dev, vrl_CoordFrame frame)
{
vrl_Vector v;
if (obj == NULL || dev == NULL) return -1;
if (vrl_DeviceGetRotationMode(dev) == VRL_MOTION_ABSOLUTE)
vrl_ObjectRotReset(obj);
if (vrl_DeviceGetTranslationMode(dev) == VRL_MOTION_ABSOLUTE)
vrl_ObjectMove(obj, 0, 0, 0);
if (vrl_DeviceGetRotationMode(dev))
{
vrl_ObjectRotate(obj, vrl_DeviceGetValue(dev, YROT), Y, frame, NULL);
vrl_ObjectRotate(obj, vrl_DeviceGetValue(dev, XROT), X, frame, NULL);
vrl_ObjectRotate(obj, vrl_DeviceGetValue(dev, ZROT), Z, frame, NULL);
}
if (vrl_DeviceGetTranslationMode(dev))
{
vrl_VectorCreate(v, vrl_DeviceGetValue(dev, X), vrl_DeviceGetValue(dev, Y), vrl_DeviceGetValue(dev, Z));
vrl_ObjectTranslate(obj, v, frame, NULL);
}
vrl_SystemRequestRefresh();
return 0;
}

static int object_move_locally(vrl_Object *obj)
{
return object_mover(obj, vrl_ObjectGetApplicationData(obj), VRL_COORD_LOCAL);
}

void vrl_ApplicationInit(void)
{
vrl_Object *torso, *head;
vrl_Device *headdev = vrl_DeviceFind("head");
vrl_Device *torsodev = vrl_DeviceFind("body");

/* if neither a head device nor a torso device was specified in the
configuration file, use the keypad as the head device */
if (headdev == NULL && torsodev == NULL)
torsodev = vrl_DeviceOpen(vrl_KeypadDevice, 0);

/* find the head (the object the camera is associated with) and
set it up to track the head device */
head = vrl_CameraGetObject(vrl_WorldGetCamera());
vrl_ObjectSetFunction(head, object_move_locally);
vrl_ObjectSetApplicationData(head, headdev);

/* if the application hasn't already attached the head to a torso,
then make a copy of the head to form the torso and attach the head
to it; make sure that the torso thus created has no shape (we don't
want a head on top of a another head to be the default) */
torso = vrl_ObjectFindRoot(head);
if (torso == head) /* no torso yet */
{
torso = vrl_ObjectCopy(head); /* create one */
vrl_ObjectAttach(head, torso); /* and attach the head to it */
vrl_ObjectSetShape(torso, NULL); /* doesn't look like the head */
}

/* let the torso track the "body" device */
if (torsodev)
{
vrl_ObjectSetFunction(torso, object_move_locally);
vrl_ObjectSetApplicationData(torso, torsodev);
}
}


  3 Responses to “Category : Printer + Display Graphics
Archive   : AVRIL11.ZIP
Filename : INPUT.C

  1. Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

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