mirror of
https://github.com/NGSolve/netgen.git
synced 2024-12-26 22:00:33 +05:00
344 lines
8.1 KiB
C
344 lines
8.1 KiB
C
/* $Id: stereo.c,v 1.14 2009/02/07 07:04:50 gregcouch Exp $ */
|
|
|
|
/*
|
|
* Togl - a Tk OpenGL widget
|
|
* Copyright (C) 1996-1997 Brian Paul and Ben Bederson
|
|
* Copyright (C) 2006-2009 Greg Couch
|
|
* See the LICENSE file for copyright details.
|
|
*/
|
|
|
|
#define USE_TOGL_STUBS
|
|
|
|
#include "togl.h"
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#undef TCL_STORAGE_CLASS
|
|
#define TCL_STORAGE_CLASS DLLEXPORT
|
|
|
|
|
|
static Tcl_Obj *toglFont;
|
|
static double xAngle = 0, yAngle = 0, zAngle = 0;
|
|
static GLfloat CornerX, CornerY, CornerZ; /* where to print strings */
|
|
static double coord_scale = 1;
|
|
|
|
|
|
|
|
/*
|
|
* Togl widget create callback. This is called by Tcl/Tk when the widget has
|
|
* been realized. Here's where one may do some one-time context setup or
|
|
* initializations.
|
|
*/
|
|
static int
|
|
create_cb(ClientData clientData, Tcl_Interp *interp, int objc,
|
|
Tcl_Obj *const *objv)
|
|
{
|
|
Togl *togl;
|
|
|
|
if (objc != 2) {
|
|
Tcl_WrongNumArgs(interp, 1, objv, "pathName");
|
|
return TCL_ERROR;
|
|
}
|
|
|
|
if (Togl_GetToglFromObj(interp, objv[1], &togl) != TCL_OK) {
|
|
return TCL_ERROR;
|
|
}
|
|
|
|
return TCL_OK;
|
|
}
|
|
|
|
|
|
/*
|
|
* Togl widget reshape callback. This is called by Tcl/Tk when the widget
|
|
* has been resized. Typically, we call glViewport and perhaps setup the
|
|
* projection matrix.
|
|
*/
|
|
static int
|
|
reshape_cb(ClientData clientData, Tcl_Interp *interp, int objc,
|
|
Tcl_Obj *const *objv)
|
|
{
|
|
int width;
|
|
int height;
|
|
float aspect;
|
|
Togl *togl;
|
|
|
|
if (objc != 2) {
|
|
Tcl_WrongNumArgs(interp, 1, objv, "pathName");
|
|
return TCL_ERROR;
|
|
}
|
|
|
|
if (Togl_GetToglFromObj(interp, objv[1], &togl) != TCL_OK) {
|
|
return TCL_ERROR;
|
|
}
|
|
|
|
width = Togl_Width(togl);
|
|
height = Togl_Height(togl);
|
|
aspect = (float) width / (float) height;
|
|
|
|
glViewport(0, 0, width, height);
|
|
|
|
/* Set up projection transform */
|
|
glMatrixMode(GL_PROJECTION);
|
|
glLoadIdentity();
|
|
glFrustum(-aspect, aspect, -1, 1, 1, 10);
|
|
|
|
CornerX = -aspect;
|
|
CornerY = -1;
|
|
CornerZ = -1.1f;
|
|
|
|
/* Change back to model view transform for rendering */
|
|
glMatrixMode(GL_MODELVIEW);
|
|
return TCL_OK;
|
|
}
|
|
|
|
|
|
static void
|
|
draw_eye(Togl *togl)
|
|
{
|
|
static GLuint cubeList = 0;
|
|
|
|
Togl_Clear(togl, GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
|
glMatrixMode(GL_PROJECTION);
|
|
glLoadIdentity();
|
|
Togl_Frustum(togl, -1, 1, -1, 1, 1, 10);
|
|
glMatrixMode(GL_MODELVIEW);
|
|
|
|
if (!cubeList) {
|
|
cubeList = glGenLists(1);
|
|
glNewList(cubeList, GL_COMPILE);
|
|
|
|
/* Front face */
|
|
glBegin(GL_QUADS);
|
|
glColor3f(0.4f, 0.8f, 0.4f); /* Green-ish */
|
|
glVertex3f(-1, 1, 1);
|
|
glVertex3f(1, 1, 1);
|
|
glVertex3f(1, -1, 1);
|
|
glVertex3f(-1, -1, 1);
|
|
/* Back face */
|
|
glColor3f(0.8f, 0.8f, 0.4f); /* Yellow-ish */
|
|
glVertex3f(-1, 1, -1);
|
|
glVertex3f(1, 1, -1);
|
|
glVertex3f(1, -1, -1);
|
|
glVertex3f(-1, -1, -1);
|
|
/* Top side face */
|
|
glColor3f(0.4f, 0.4f, 0.8f); /* Blue-ish */
|
|
glVertex3f(-1, 1, 1);
|
|
glVertex3f(1, 1, 1);
|
|
glVertex3f(1, 1, -1);
|
|
glVertex3f(-1, 1, -1);
|
|
/* Bottom side face */
|
|
glColor3f(0.8f, 0.4f, 0.4f); /* Red-ish */
|
|
glVertex3f(-1, -1, 1);
|
|
glVertex3f(1, -1, 1);
|
|
glVertex3f(1, -1, -1);
|
|
glVertex3f(-1, -1, -1);
|
|
glEnd();
|
|
|
|
glEndList();
|
|
}
|
|
glCallList(cubeList);
|
|
}
|
|
|
|
/*
|
|
* Togl widget display callback. This is called by Tcl/Tk when the widget's
|
|
* contents have to be redrawn. Typically, we clear the color and depth
|
|
* buffers, render our objects, then swap the front/back color buffers.
|
|
*/
|
|
static int
|
|
display_cb(ClientData clientData, Tcl_Interp *interp, int objc,
|
|
Tcl_Obj *const *objv)
|
|
{
|
|
Togl *togl;
|
|
|
|
if (objc != 2) {
|
|
Tcl_WrongNumArgs(interp, 1, objv, "pathName");
|
|
return TCL_ERROR;
|
|
}
|
|
|
|
if (Togl_GetToglFromObj(interp, objv[1], &togl) != TCL_OK) {
|
|
return TCL_ERROR;
|
|
}
|
|
|
|
/* setup modelview matrix */
|
|
glLoadIdentity(); /* Reset modelview matrix to the identity
|
|
* matrix */
|
|
glTranslatef(0, 0, -3.0); /* Move the camera back three units */
|
|
glScaled(coord_scale, coord_scale, coord_scale); /* Zoom in and out */
|
|
glRotated(xAngle, 1, 0, 0); /* Rotate by X, Y, and Z angles */
|
|
glRotated(yAngle, 0, 1, 0);
|
|
glRotated(zAngle, 0, 0, 1);
|
|
|
|
glEnable(GL_DEPTH_TEST);
|
|
|
|
if (Togl_NumEyes(togl) == 1) {
|
|
/* single eye */
|
|
Togl_DrawBuffer(togl, GL_BACK);
|
|
draw_eye(togl);
|
|
} else {
|
|
/* stereo left eye */
|
|
Togl_DrawBuffer(togl, GL_BACK_LEFT);
|
|
draw_eye(togl);
|
|
|
|
/* stereo right eye */
|
|
Togl_DrawBuffer(togl, GL_BACK_RIGHT);
|
|
draw_eye(togl);
|
|
}
|
|
|
|
glDisable(GL_DEPTH_TEST);
|
|
glLoadIdentity();
|
|
glColor3f(1, 1, 1);
|
|
glRasterPos3f(CornerX, CornerY, CornerZ);
|
|
Togl_SwapBuffers(togl);
|
|
return TCL_OK;
|
|
}
|
|
|
|
|
|
static int
|
|
setXrot_cb(ClientData clientData, Tcl_Interp *interp, int objc,
|
|
Tcl_Obj *const *objv)
|
|
{
|
|
Togl *togl;
|
|
|
|
if (objc != 3) {
|
|
Tcl_WrongNumArgs(interp, 1, objv, "pathName angle");
|
|
return TCL_ERROR;
|
|
}
|
|
|
|
if (Togl_GetToglFromObj(interp, objv[1], &togl) != TCL_OK) {
|
|
return TCL_ERROR;
|
|
}
|
|
|
|
if (Tcl_GetDoubleFromObj(interp, objv[2], &xAngle) != TCL_OK) {
|
|
return TCL_ERROR;
|
|
}
|
|
|
|
/* printf( "before %f ", xAngle ); */
|
|
|
|
if (xAngle < 0) {
|
|
xAngle += 360;
|
|
} else if (xAngle > 360) {
|
|
xAngle -= 360;
|
|
}
|
|
|
|
/* printf( "after %f \n", xAngle ); */
|
|
|
|
Togl_PostRedisplay(togl);
|
|
|
|
/* Let result string equal value */
|
|
Tcl_SetObjResult(interp, objv[2]);
|
|
return TCL_OK;
|
|
}
|
|
|
|
|
|
static int
|
|
setYrot_cb(ClientData clientData, Tcl_Interp *interp, int objc,
|
|
Tcl_Obj *const *objv)
|
|
{
|
|
Togl *togl;
|
|
|
|
if (objc != 3) {
|
|
Tcl_WrongNumArgs(interp, 1, objv, "pathName angle");
|
|
return TCL_ERROR;
|
|
}
|
|
|
|
if (Togl_GetToglFromObj(interp, objv[1], &togl) != TCL_OK) {
|
|
return TCL_ERROR;
|
|
}
|
|
|
|
if (Tcl_GetDoubleFromObj(interp, objv[2], &yAngle) != TCL_OK) {
|
|
return TCL_ERROR;
|
|
}
|
|
|
|
if (yAngle < 0) {
|
|
yAngle += 360;
|
|
} else if (yAngle > 360) {
|
|
yAngle -= 360;
|
|
}
|
|
|
|
Togl_PostRedisplay(togl);
|
|
|
|
/* Let result string equal value */
|
|
Tcl_SetObjResult(interp, objv[2]);
|
|
return TCL_OK;
|
|
}
|
|
|
|
|
|
int
|
|
getXrot_cb(ClientData clientData, Tcl_Interp *interp,
|
|
int argc, CONST84 char *argv[])
|
|
{
|
|
Tcl_SetObjResult(interp, Tcl_NewDoubleObj(xAngle));
|
|
return TCL_OK;
|
|
}
|
|
|
|
|
|
int
|
|
getYrot_cb(ClientData clientData, Tcl_Interp *interp,
|
|
int argc, CONST84 char *argv[])
|
|
{
|
|
Tcl_SetObjResult(interp, Tcl_NewDoubleObj(yAngle));
|
|
return TCL_OK;
|
|
}
|
|
|
|
|
|
static int
|
|
coord_scale_cb(ClientData clientData, Tcl_Interp *interp, int objc,
|
|
Tcl_Obj *const *objv)
|
|
{
|
|
Togl *togl;
|
|
|
|
if (objc != 3) {
|
|
Tcl_WrongNumArgs(interp, 1, objv, "pathName value");
|
|
return TCL_ERROR;
|
|
}
|
|
|
|
if (Togl_GetToglFromObj(interp, objv[1], &togl) != TCL_OK) {
|
|
return TCL_ERROR;
|
|
}
|
|
|
|
if (Tcl_GetDoubleFromObj(interp, objv[2], &coord_scale) != TCL_OK) {
|
|
return TCL_ERROR;
|
|
}
|
|
|
|
Togl_PostRedisplay(togl);
|
|
|
|
/* Let result string equal value */
|
|
Tcl_SetObjResult(interp, objv[2]);
|
|
return TCL_OK;
|
|
}
|
|
|
|
|
|
EXTERN int
|
|
Stereo_Init(Tcl_Interp *interp)
|
|
{
|
|
/*
|
|
* Initialize Tcl and the Togl widget module.
|
|
*/
|
|
if (Tcl_InitStubs(interp, "8.1", 0) == NULL
|
|
|| Togl_InitStubs(interp, "2.0", 0) == NULL) {
|
|
return TCL_ERROR;
|
|
}
|
|
|
|
/*
|
|
* Specify the C callback functions for widget creation, display,
|
|
* and reshape.
|
|
*/
|
|
Tcl_CreateObjCommand(interp, "create_cb", create_cb, NULL, NULL);
|
|
Tcl_CreateObjCommand(interp, "display_cb", display_cb, NULL, NULL);
|
|
Tcl_CreateObjCommand(interp, "reshape_cb", reshape_cb, NULL, NULL);
|
|
|
|
Tcl_CreateObjCommand(interp, "setXrot", setXrot_cb, NULL, NULL);
|
|
Tcl_CreateObjCommand(interp, "setYrot", setYrot_cb, NULL, NULL);
|
|
Tcl_CreateObjCommand(interp, "coord_scale", coord_scale_cb, NULL, NULL);
|
|
|
|
/*
|
|
* Call Tcl_CreateCommand for application-specific commands, if
|
|
* they weren't already created by the init procedures called above.
|
|
*/
|
|
|
|
Tcl_CreateCommand(interp, "getXrot", getXrot_cb, NULL, NULL);
|
|
Tcl_CreateCommand(interp, "getYrot", getYrot_cb, NULL, NULL);
|
|
|
|
return TCL_OK;
|
|
}
|