mirror of
https://github.com/NGSolve/netgen.git
synced 2024-12-31 00:00:33 +05:00
280 lines
6.8 KiB
C
280 lines
6.8 KiB
C
/* $Id: double.c,v 1.22 2009/03/12 23:59:35 gregcouch Exp $ */
|
|
|
|
/*
|
|
* Togl - a Tk OpenGL widget
|
|
* Copyright (C) 1996-1997 Brian Paul and Ben Bederson
|
|
* Copyright (C) 2006-2007 Greg Couch
|
|
* See the LICENSE file for copyright details.
|
|
*/
|
|
|
|
#define USE_TOGL_STUBS
|
|
|
|
#include "togl.h"
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <math.h>
|
|
|
|
#undef TCL_STORAGE_CLASS
|
|
#define TCL_STORAGE_CLASS DLLEXPORT
|
|
|
|
static Tcl_Obj *toglFont;
|
|
static double xAngle = 0, yAngle = 0, zAngle = 0;
|
|
static GLdouble CornerX, CornerY, CornerZ; /* where to print strings */
|
|
|
|
|
|
/*
|
|
* 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;
|
|
}
|
|
|
|
if (!toglFont)
|
|
toglFont = Togl_LoadBitmapFont(togl, "Helvetica");
|
|
if (!toglFont) {
|
|
static int shown;
|
|
|
|
if (!shown) {
|
|
fprintf(stderr, "Couldn't load font!\n");
|
|
shown = 1;
|
|
}
|
|
}
|
|
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;
|
|
double 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 = (double) width / (double) 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 = -1.1;
|
|
|
|
/* Change back to model view transform for rendering */
|
|
glMatrixMode(GL_MODELVIEW);
|
|
|
|
return TCL_OK;
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
print_string(Togl *togl, const char *s)
|
|
{
|
|
if (toglFont)
|
|
Togl_WriteChars(togl, toglFont, s, 0);
|
|
}
|
|
|
|
|
|
/*
|
|
* 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)
|
|
{
|
|
static GLuint cubeList = 0;
|
|
const char *ident;
|
|
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;
|
|
|
|
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
|
|
|
glLoadIdentity(); /* Reset modelview matrix to the identity
|
|
* matrix */
|
|
glTranslatef(0, 0, -3); /* Move the camera back three units */
|
|
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 (!cubeList) {
|
|
cubeList = glGenLists(1);
|
|
glNewList(cubeList, GL_COMPILE);
|
|
|
|
/* Front face */
|
|
glBegin(GL_QUADS);
|
|
glColor3f(0, 0.7f, 0.1f); /* Green */
|
|
glVertex3f(-1, 1, 1);
|
|
glVertex3f(1, 1, 1);
|
|
glVertex3f(1, -1, 1);
|
|
glVertex3f(-1, -1, 1);
|
|
/* Back face */
|
|
glColor3f(0.9f, 1, 0); /* Yellow */
|
|
glVertex3f(-1, 1, -1);
|
|
glVertex3f(1, 1, -1);
|
|
glVertex3f(1, -1, -1);
|
|
glVertex3f(-1, -1, -1);
|
|
/* Top side face */
|
|
glColor3f(0.2f, 0.2f, 1); /* Blue */
|
|
glVertex3f(-1, 1, 1);
|
|
glVertex3f(1, 1, 1);
|
|
glVertex3f(1, 1, -1);
|
|
glVertex3f(-1, 1, -1);
|
|
/* Bottom side face */
|
|
glColor3f(0.7f, 0, 0.1f); /* Red */
|
|
glVertex3f(-1, -1, 1);
|
|
glVertex3f(1, -1, 1);
|
|
glVertex3f(1, -1, -1);
|
|
glVertex3f(-1, -1, -1);
|
|
glEnd();
|
|
|
|
glEndList();
|
|
|
|
}
|
|
glCallList(cubeList);
|
|
|
|
glDisable(GL_DEPTH_TEST);
|
|
glLoadIdentity();
|
|
glColor3f(1, 1, 1);
|
|
glRasterPos3d(CornerX, CornerY, CornerZ);
|
|
ident = Togl_Ident(togl);
|
|
if (ident)
|
|
print_string(togl, ident);
|
|
Togl_SwapBuffers(togl);
|
|
return TCL_OK;
|
|
}
|
|
|
|
|
|
|
|
|
|
static int
|
|
setXrot_cb(ClientData clientData, Tcl_Interp *interp, int objc,
|
|
Tcl_Obj *const *objv)
|
|
{
|
|
if (objc != 2) {
|
|
Tcl_WrongNumArgs(interp, 1, objv, "angle");
|
|
return TCL_ERROR;
|
|
}
|
|
|
|
if (Tcl_GetDoubleFromObj(interp, objv[1], &xAngle) != TCL_OK) {
|
|
return TCL_ERROR;
|
|
}
|
|
|
|
/* printf( "before %f ", xAngle ); */
|
|
|
|
xAngle = fmod(xAngle, 360.0);
|
|
if (xAngle < 0)
|
|
xAngle += 360.0;
|
|
|
|
/* printf( "after %f \n", xAngle ); */
|
|
|
|
/* Let result string equal value */
|
|
Tcl_SetObjResult(interp, objv[1]);
|
|
return TCL_OK;
|
|
}
|
|
|
|
|
|
static int
|
|
setYrot_cb(ClientData clientData, Tcl_Interp *interp, int objc,
|
|
Tcl_Obj *const *objv)
|
|
{
|
|
if (objc != 2) {
|
|
Tcl_WrongNumArgs(interp, 1, objv, "pathName angle");
|
|
return TCL_ERROR;
|
|
}
|
|
|
|
if (Tcl_GetDoubleFromObj(interp, objv[1], &yAngle) != TCL_OK) {
|
|
return TCL_ERROR;
|
|
}
|
|
|
|
yAngle = fmod(yAngle, 360.0);
|
|
if (yAngle < 0)
|
|
yAngle += 360.0;
|
|
|
|
/* Let result string equal value */
|
|
Tcl_SetObjResult(interp, objv[1]);
|
|
return TCL_OK;
|
|
}
|
|
|
|
/*
|
|
* Called by Tcl to let me initialize the modules (Togl) I will need.
|
|
*/
|
|
EXTERN int
|
|
Double_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, "double::create_cb", create_cb, NULL, NULL);
|
|
Tcl_CreateObjCommand(interp, "double::display_cb", display_cb, NULL, NULL);
|
|
Tcl_CreateObjCommand(interp, "double::reshape_cb", reshape_cb, NULL, NULL);
|
|
|
|
/*
|
|
* Make a new Togl widget command so the Tcl code can set a C variable.
|
|
*/
|
|
|
|
Tcl_CreateObjCommand(interp, "double::setXrot", setXrot_cb, NULL, NULL);
|
|
Tcl_CreateObjCommand(interp, "double::setYrot", setYrot_cb, NULL, NULL);
|
|
|
|
/*
|
|
* Call Tcl_CreateCommand for application-specific commands, if
|
|
* they weren't already created by the init procedures called above.
|
|
*/
|
|
|
|
return TCL_OK;
|
|
}
|