--- /dev/null
+/**************************************************************************
+ * tkglkey.c -- handle tkgl keyboard events
+ *
+ * Written by Curtis Olson, started May 1997.
+ *
+ * $Id$
+ * (Log is kept at end of this file)
+ **************************************************************************/
+
+
+#include <stdio.h>
+
+/* assumes -I/usr/include/mesa in compile command */
+#include "gltk.h"
+
+#include "GLTKkey.h"
+#include "../aircraft/aircraft.h"
+
+
+/* Handle keyboard events */
+GLenum GLTKkey(int k, GLenum mask) {
+ struct control_params *c;
+
+ c = ¤t_aircraft.controls;
+
+ switch (k) {
+ case TK_UP:
+ c->elev -= 0.1;
+ return GL_TRUE;
+ case TK_DOWN:
+ c->elev += 0.1;
+ return GL_TRUE;
+ case TK_LEFT:
+ c->aileron += 0.01;
+ return GL_TRUE;
+ case TK_RIGHT:
+ c->aileron -= 0.01;
+ return GL_TRUE;
+ case 1 /* TK_END */:
+ c->rudder -= 0.01;
+ return GL_TRUE;
+ case 2 /* TK_PGDWN */:
+ c->rudder += 0.01;
+ return GL_TRUE;
+ case TK_a:
+ c->throttle[0] -= 0.05;
+ return GL_TRUE;
+ case TK_s:
+ c->throttle[0] += 0.05;
+ case TK_ESCAPE:
+ tkQuit();
+ }
+
+ printf("Key hit = %d\n", k);
+
+ return GL_FALSE;
+}
+
+
+/* $Log$
+/* Revision 1.1 1997/05/21 15:57:49 curt
+/* Renamed due to added GLUT support.
+/*
+ * Revision 1.2 1997/05/19 18:22:41 curt
+ * Parameter tweaking ... starting to stub in fog support.
+ *
+ * Revision 1.1 1997/05/16 16:05:51 curt
+ * Initial revision.
+ *
+ */
--- /dev/null
+/**************************************************************************
+ * tkglkey.h -- handle tkgl keyboard events
+ *
+ * Written by Curtis Olson, started May 1997.
+ *
+ * $Id$
+ * (Log is kept at end of this file)
+ **************************************************************************/
+
+
+#ifndef GLTKKEY_H
+#define GLTKKEY_H
+
+
+/* assumes -I/usr/include/mesa in compile command */
+#include "gltk.h"
+
+/* Handle keyboard events */
+GLenum GLTKkey(int k, GLenum mask);
+
+
+#endif GLTKKEY_H
+
+
+/* $Log$
+/* Revision 1.1 1997/05/21 15:57:49 curt
+/* Renamed due to added GLUT support.
+/*
+ * Revision 1.2 1997/05/17 00:17:34 curt
+ * Trying to stub in support for standard OpenGL.
+ *
+ * Revision 1.1 1997/05/16 16:05:53 curt
+ * Initial revision.
+ *
+ */
--- /dev/null
+/**************************************************************************
+ * tkglkey.c -- handle tkgl keyboard events
+ *
+ * Written by Curtis Olson, started May 1997.
+ *
+ * $Id$
+ * (Log is kept at end of this file)
+ **************************************************************************/
+
+
+#include <stdio.h>
+
+#include <GL/glut.h>
+
+#include "GLUTkey.h"
+#include "../aircraft/aircraft.h"
+
+
+/* Handle keyboard events */
+void GLUTkey(unsigned char k, int x, int y) {
+ struct control_params *c;
+
+ c = ¤t_aircraft.controls;
+
+ printf("Key hit = %d\n", k);
+
+ switch (k) {
+ case GLUT_KEY_UP:
+ c->elev -= 0.1;
+ return;
+ case GLUT_KEY_DOWN:
+ c->elev += 0.1;
+ return;
+ case GLUT_KEY_LEFT:
+ c->aileron += 0.01;
+ return;
+ case GLUT_KEY_RIGHT:
+ c->aileron -= 0.01;
+ return;
+ case 1 /* TK_END */:
+ c->rudder -= 0.01;
+ return;
+ case 2 /* TK_PGDWN */:
+ c->rudder += 0.01;
+ return;
+ case 3:
+ c->throttle[0] -= 0.05;
+ return;
+ case 4:
+ c->throttle[0] += 0.05;
+ case 27: /* ESC */
+ exit(0);
+ }
+
+}
+
+
+/* $Log$
+/* Revision 1.1 1997/05/21 15:57:50 curt
+/* Renamed due to added GLUT support.
+/*
+ * Revision 1.2 1997/05/19 18:22:41 curt
+ * Parameter tweaking ... starting to stub in fog support.
+ *
+ * Revision 1.1 1997/05/16 16:05:51 curt
+ * Initial revision.
+ *
+ */
--- /dev/null
+/**************************************************************************
+ * GLUTkey.h -- handle GLUT keyboard events
+ *
+ * Written by Curtis Olson, started May 1997.
+ *
+ * $Id$
+ * (Log is kept at end of this file)
+ **************************************************************************/
+
+
+#ifndef GLUTKEY_H
+#define GLUTKEY_H
+
+
+#ifdef GLUT
+ #include <GL/glut.h>
+#elif TIGER
+ /* assumes -I/usr/include/mesa in compile command */
+ #include "gltk.h"
+#endif
+
+/* Handle keyboard events */
+void GLUTkey(unsigned char k, int x, int y);
+
+
+#endif GLUTKEY_H
+
+
+/* $Log$
+/* Revision 1.1 1997/05/21 15:57:51 curt
+/* Renamed due to added GLUT support.
+/*
+ * Revision 1.2 1997/05/17 00:17:34 curt
+ * Trying to stub in support for standard OpenGL.
+ *
+ * Revision 1.1 1997/05/16 16:05:53 curt
+ * Initial revision.
+ *
+ */
--- /dev/null
+/**************************************************************************
+ * GLmain.c -- top level sim routines
+ *
+ * Written by Curtis Olson for OpenGL, started May 1997.
+ *
+ * $Id$
+ * (Log is kept at end of this file)
+ **************************************************************************/
+
+
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/time.h>
+
+#ifdef GLUT
+ #include <GL/glut.h>
+ #include "GLUTkey.h"
+#elif MESA_TK
+ /* assumes -I/usr/include/mesa in compile command */
+ #include "gltk.h"
+ #include "GLTKkey.h"
+#endif
+
+#include "../aircraft/aircraft.h"
+#include "../scenery/scenery.h"
+
+
+/* This is a record containing all the info for the aircraft currently
+ being operated */
+struct aircraft_params current_aircraft;
+
+/* temporary hack */
+extern struct mesh *mesh_ptr;
+
+/* Function prototypes */
+GLint make_mesh();
+static void draw_mesh();
+
+
+/* view parameters */
+static GLfloat win_ratio = 1.0;
+
+/* pointer to terrain mesh structure */
+static GLint mesh;
+
+/* init_view() -- Setup view parameters */
+static void init_view() {
+ /* if the 4th field is 0.0, this specifies a direction ... */
+ static GLfloat pos[4] = {-3.0, 1.0, 3.0, 0.0 };
+ static GLfloat fogColor[4] = {0.5, 0.5, 0.5, 1.0};
+
+ glLightfv( GL_LIGHT0, GL_POSITION, pos );
+ glEnable( GL_CULL_FACE );
+ glEnable( GL_LIGHTING );
+ glEnable( GL_LIGHT0 );
+ glEnable( GL_DEPTH_TEST );
+
+ glEnable( GL_FOG );
+ glFogi (GL_FOG_MODE, GL_LINEAR);
+ /* glFogf (GL_FOG_START, 1.0); */
+ glFogf (GL_FOG_END, 1000.0);
+ glFogfv (GL_FOG_COLOR, fogColor);
+ glFogf (GL_FOG_DENSITY, 0.04);
+ glHint(GL_FOG_HINT, GL_FASTEST);
+
+ glClearColor(0.6, 0.6, 0.9, 1.0);
+}
+
+
+/* init_scene() -- build all objects */
+static void init_scene() {
+
+ /* make terrain mesh */
+ mesh = make_mesh();
+
+ /* If enabled, normal vectors specified with glNormal are scaled
+ to unit length after transformation. See glNormal. */
+ glEnable( GL_NORMALIZE );
+}
+
+
+/* create the terrain mesh */
+GLint make_mesh() {
+ GLint mesh;
+
+ mesh = mesh_to_ogl(mesh_ptr);
+
+ return(mesh);
+}
+
+
+/* create the terrain mesh */
+GLint make_mesh_old() {
+ GLint mesh;
+ static GLfloat color[4] = { 0.3, 0.7, 0.2, 1.0 };
+
+ mesh = glGenLists(1);
+ glNewList(mesh, GL_COMPILE);
+ glMaterialfv( GL_FRONT, GL_AMBIENT_AND_DIFFUSE, color );
+ glShadeModel( GL_FLAT ); /* glShadeModel( GL_SMOOTH ); */
+
+ glBegin(GL_POLYGON);
+ glVertex3f(-10.0, -10.0, 0.0);
+ glVertex3f(0.0, -10.0, 0.0);
+ glVertex3f(0.0, 0.0, 1.0);
+ glVertex3f(-10.0, 0.0, 1.0);
+ glEnd();
+
+ glBegin(GL_POLYGON);
+ glVertex3f(-10.0, 0.0, 1.0);
+ glVertex3f(0.0, 0.0, 1.0);
+ glVertex3f(0.0, 10.0, 0.0);
+ glVertex3f(-10.0, 10.0, 0.0);
+ glEnd();
+
+ glBegin(GL_POLYGON);
+ glVertex3f(0.0, 0.0, 0.0);
+ glVertex3f(10.0, 0.0, 2.0);
+ glVertex3f(10.0, 10.0, 2.0);
+ glVertex3f(0.0, 10.0, 0.0);
+ glEnd();
+
+ glBegin(GL_POLYGON);
+ glVertex3f(0.0, -10.0, -1.0);
+ glVertex3f(10.0, -10.0, 0.0);
+ glVertex3f(10.0, 0.0, -1.0);
+ glVertex3f(0.0, 0.0, 0.0);
+ glEnd();
+
+ glEndList();
+
+ return(mesh);
+}
+
+
+/* update the view volume */
+static void update_view() {
+ struct flight_params *f;
+
+ f = ¤t_aircraft.flight;
+
+ /* Tell GL we are about to modify the projection parameters */
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+
+ gluPerspective(45.0, 1.0/win_ratio, 1.0, 6000.0);
+ gluLookAt(f->pos_x, f->pos_y, f->pos_z,
+ f->pos_x + cos(f->Psi), f->pos_y + sin(f->Psi), f->pos_z,
+ 0.0, 0.0, 1.0);
+}
+
+
+/* draw the scene */
+static void draw_scene( void ) {
+ glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
+
+ /* update view volume parameters */
+ update_view();
+
+ /* Tell GL we are switching to model view parameters */
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+
+ /* glTranslatef(0.0, 0.0, -5.0); */
+
+ glPushMatrix();
+
+ /* draw terrain mesh */
+ draw_mesh();
+
+ glPopMatrix();
+
+ #ifdef GLUT
+ glutSwapBuffers();
+ #elif MESA_TK
+ tkSwapBuffers();
+ #endif
+}
+
+
+/* draw the terrain mesh */
+static void draw_mesh() {
+ glCallList(mesh);
+}
+
+
+/* What should we do when we have nothing else to do? How about get
+ * ready for the next move?*/
+static void idle( void )
+{
+ slew_update();
+ aircraft_debug(1);
+
+ draw_scene();
+}
+
+
+/* new window size or exposure */
+static void reshape( int width, int height ) {
+ /* Do this so we can call reshape(0,0) ourselves without having to know
+ * what the values of width & height are. */
+ if ( (height > 0) && (width > 0) ) {
+ win_ratio = (GLfloat) height / (GLfloat) width;
+ }
+
+ /* Inform gl of our view window size */
+ glViewport(0, 0, (GLint)width, (GLint)height);
+
+ update_view();
+
+ glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
+}
+
+
+/**************************************************************************
+ * Main ...
+ **************************************************************************/
+
+int main( int argc, char *argv[] ) {
+ /* parse the scenery file */
+ parse_scenery(argv[1]);
+
+ #ifdef GLUT
+ /* initialize GLUT */
+ glutInit(&argc, argv);
+
+ /* Define initial window size */
+ glutInitWindowSize(640, 400);
+
+ /* Define Display Parameters */
+ glutInitDisplayMode( GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE );
+
+ /* Initialize the main window */
+ glutCreateWindow("Terrain Demo");
+ #elif MESA_TK
+ /* Define initial window size */
+ tkInitPosition(0, 0, 640, 400);
+
+ /* Define Display Parameters */
+ tkInitDisplayMode( TK_RGB | TK_DEPTH | TK_DOUBLE | TK_DIRECT );
+
+ /* Initialize the main window */
+ if (tkInitWindow("Terrain Demo") == GL_FALSE) {
+ tkQuit();
+ }
+ #endif
+
+ /* setup view parameters, only makes GL calls */
+ init_view();
+
+ /* build all objects */
+ init_scene();
+
+ /* Set initial position and slew parameters */
+ /* slew_init(-398391.3, 120070.4, 244, 3.1415); */ /* GLOBE Airport */
+ slew_init(-398673.28,120625.64, 53, 4.38);
+
+ #ifdef GLUT
+ /* call reshape() on window resizes */
+ glutReshapeFunc( reshape );
+
+ /* call key() on keyboard event */
+ glutKeyboardFunc( GLUTkey );
+ glutSpecialFunc( GLUTkey );
+
+ /* call idle() whenever there is nothing else to do */
+ glutIdleFunc( idle );
+
+ /* draw the scene */
+ glutDisplayFunc( draw_scene );
+
+ /* pass control off to the GLUT event handler */
+ glutMainLoop();
+ #elif MESA_TK
+ /* call reshape() on expose events */
+ tkExposeFunc( reshape );
+
+ /* call reshape() on window resizes */
+ tkReshapeFunc( reshape );
+
+ /* call key() on keyboard event */
+ tkKeyDownFunc( GLTKkey );
+
+ /* call idle() whenever there is nothing else to do */
+ tkIdleFunc( idle );
+
+ /* draw the scene */
+ tkDisplayFunc( draw_scene );
+
+ /* pass control off to the tk event handler */
+ tkExec();
+ #endif
+
+ return(0);
+}
+
+
+/* $Log$
+/* Revision 1.1 1997/05/21 15:57:51 curt
+/* Renamed due to added GLUT support.
+/*
+ * Revision 1.3 1997/05/19 18:22:42 curt
+ * Parameter tweaking ... starting to stub in fog support.
+ *
+ * Revision 1.2 1997/05/17 00:17:34 curt
+ * Trying to stub in support for standard OpenGL.
+ *
+ * Revision 1.1 1997/05/16 16:05:52 curt
+ * Initial revision.
+ *
+ */
TARGET=viewer
-CFILES = gltkmain.c gltkkey.c mesh2ogl.c
-OFILES = $(CFILES:.c=.o)
-AFILES = ../flight/libflight.a ../aircraft/libaircraft.a ../scenery/libscenery.a
-
CC = gcc
-CFLAGS = -g -Wall
-# CFLAGS = -O2 -Wall
-INCLUDES = -I/usr/include/mesa
+# STD_FLAGS = -O2 -Wall
+STD_CFLAGS = -g -Wall
-MESA_LIBS = -L/usr/lib/mesa -lMesaaux -lMesatk -lMesaGLU -lMesaGL
-X11_LIBS = -L/usr/X11R6/lib -lX11 -lXext
-LIBS = $(MESA_LIBS) $(X11_LIBS) -lm -lfl
+
+#---------------------------------------------------------------------------
+# Define the high level GL interface library
+#---------------------------------------------------------------------------
+
+# For GLUT
+INTERFACE_FLAGS = -DGLUT
+INTERFACE_LIBS = -lglut
+INTERFACE_FILES = GLUTkey.c
+
+# For MESA_TK (Tk interface to Mesa)
+# INCLUDES = -I/usr/include/mesa
+# INTERFACE_FLAGS = -DMESA_TK
+# INTERFACE_LIBS = -L/usr/lib/mesa -lMesatk
+# INTERFACE_FILES = GLTKkey.c
+
+
+#---------------------------------------------------------------------------
+# Define main GL libraries
+#---------------------------------------------------------------------------
+
+# For OpenGL
+GRAPHICS_LIBS = -lGLU -lGL -lXmu -lX11
+
+# For Mesa
+# MESA_LIBS = -L/usr/lib/mesa -lMesaaux -lMesatk -lMesaGLU -lMesaGL
+# X11_LIBS = -L/usr/X11R6/lib -lXext -lXmu -lXi -lX11
+# GRAPHICS_LIBS = $(MESA_LIBS) $(X11_LIBS)
+
+
+CFLAGS = $(STD_CFLAGS) $(INTERFACE_FLAGS)
+LIBS = $(INTERFACE_LIBS) $(GRAPHICS_LIBS) -lm -lfl
+
+CFILES = GLmain.c $(INTERFACE_FILES) mesh2GL.c
+OFILES = $(CFILES:.c=.o)
+AFILES = ../flight/libflight.a ../aircraft/libaircraft.a ../scenery/libscenery.a
# Secondary Targets
#---------------------------------------------------------------------------
-gltkmain.o: gltkmain.c gltkkey.h ../aircraft/aircraft.h ../scenery/scenery.h
- $(CC) $(CFLAGS) $(INCLUDES) -c gltkmain.c
+GLmain.o: GLmain.c GLUTkey.h ../aircraft/aircraft.h ../scenery/scenery.h
+ $(CC) $(CFLAGS) $(INCLUDES) -c GLmain.c
-gltkkey.o: gltkkey.c gltkkey.h ../aircraft/aircraft.h
- $(CC) $(CFLAGS) $(INCLUDES) -c gltkkey.c
+GLUTkey.o: GLUTkey.c GLUTkey.h ../aircraft/aircraft.h
+ $(CC) $(CFLAGS) $(INCLUDES) -c GLUTkey.c
-mesh2ogl.o: mesh2ogl.c ../scenery/mesh.h
- $(CC) $(CFLAGS) $(INCLUDES) -c mesh2ogl.c
+GLTKkey.o: GLTKkey.c GLTKkey.h ../aircraft/aircraft.h
+ $(CC) $(CFLAGS) $(INCLUDES) -c GLTKkey.c
+
+mesh2GL.o: mesh2GL.c ../scenery/mesh.h
+ $(CC) $(CFLAGS) $(INCLUDES) -c mesh2GL.c
#---------------------------------------------------------------------------
# $Log$
+# Revision 1.2 1997/05/21 15:57:52 curt
+# Renamed due to added GLUT support.
+#
# Revision 1.1 1997/05/16 16:05:51 curt
# Initial revision.
#
--- /dev/null
+/**************************************************************************
+ * mesh2ogl.c -- walk through a mesh data structure and make ogl calls
+ *
+ * Written by Curtis Olson, started May 1997.
+ *
+ * $Id$
+ * (Log is kept at end of this file)
+ **************************************************************************/
+
+
+#ifdef GLUT
+ #include <GL/glut.h>
+#elif TIGER
+ /* assumes -I/usr/include/mesa in compile command */
+ #include "gltk.h"
+#endif
+
+#include "../scenery/mesh.h"
+#include "mat3.h"
+
+
+/* Sets the first vector to be the cross-product of the last two
+ vectors. */
+static void mat3_cross_product(float result_vec[3], register float vec1[3],
+ register float vec2[3]) {
+ float tempvec[3];
+ register float *temp = tempvec;
+
+ temp[0] = vec1[1] * vec2[2] - vec1[2] * vec2[1];
+ temp[1] = vec1[2] * vec2[0] - vec1[0] * vec2[2];
+ temp[2] = vec1[0] * vec2[1] - vec1[1] * vec2[0];
+
+ MAT3_COPY_VEC(result_vec, temp);
+}
+
+
+/* walk through mesh and make ogl calls */
+GLint mesh_to_ogl(struct mesh *m) {
+ GLint mesh;
+ static GLfloat color[4] = { 0.3, 0.7, 0.2, 1.0 };
+
+ float x1, y1, x2, y2, z11, z12, z21, z22;
+ float v1[3], v2[3], normal[3];
+ int i, j, istep, jstep, iend, jend;
+ float temp;
+
+ istep = jstep = 10; /* Detail level 1 -- 1200 ... */
+
+ mesh = glGenLists(1);
+ glNewList(mesh, GL_COMPILE);
+ glMaterialfv( GL_FRONT, GL_AMBIENT_AND_DIFFUSE, color );
+ glShadeModel( GL_FLAT ); /* glShadeModel( GL_SMOOTH ); */
+
+ iend = m->cols - 1;
+ jend = m->rows - 1;
+
+ y1 = m->originy;
+ y2 = y1 + (m->col_step * istep);
+
+ for ( i = 0; i < iend; i += istep ) {
+ x1 = m->originx;
+ x2 = x1 + (m->row_step * jstep);
+ for ( j = 0; j < jend; j += jstep ) {
+ z11 = 0.03 * m->mesh_data[j * m->rows + i ];
+ z12 = 0.03 * m->mesh_data[j * m->rows + (i+istep)];
+ z21 = 0.03 * m->mesh_data[(j+jstep) * m->rows + i ];
+ z22 = 0.03 * m->mesh_data[(j+jstep) * m->rows + (i+istep)];
+
+ /* printf("x1 = %f y1 = %f\n", x1, y1);
+ printf("x2 = %f y2 = %f\n", x2, y2);
+ printf("z11 = %f z12 = %f z21 = %f z22 = %f\n",
+ z11, z12, z21, z22); */
+
+ v1[0] = x2 - x1; v1[1] = 0; v1[2] = z21 - z11;
+ v2[0] = x2 - x1; v2[1] = y2 - y1; v2[2] = z22 - z11;
+ mat3_cross_product(normal, v1, v2);
+ MAT3_NORMALIZE_VEC(normal,temp);
+ glNormal3fv(normal);
+ glBegin(GL_POLYGON);
+ glVertex3f(x1, y1, z11);
+ glVertex3f(x2, y1, z21);
+ glVertex3f(x2, y2, z22);
+ /* printf("(%f, %f, %f)\n", x1, y1, z11);
+ printf("(%f, %f, %f)\n", x2, y1, z21);
+ printf("(%f, %f, %f)\n", x2, y2, z22); */
+ glEnd();
+
+ v1[0] = x2 - x1; v1[1] = y2 - y1; v1[2] = z22 - z11;
+ v2[0] = 0; v2[1] = y2 - y1; v2[2] = z12 - z11;
+ mat3_cross_product(normal, v1, v2);
+ MAT3_NORMALIZE_VEC(normal,temp);
+ glNormal3fv(normal);
+ glBegin(GL_POLYGON);
+ glVertex3f(x1, y1, z11);
+ glVertex3f(x2, y2, z22);
+ glVertex3f(x1, y2, z12);
+ /* printf("(%f, %f, %f)\n", x1, y1, z11);
+ printf("(%f, %f, %f)\n", x2, y2, z22);
+ printf("(%f, %f, %f)\n", x1, y2, z12); */
+ glEnd();
+
+ x1 = x2;
+ x2 = x1 + (m->row_step * jstep);
+ }
+ y1 = y2;
+ y2 = y1 + (m->col_step * istep);
+ }
+
+ glEndList();
+
+ return(mesh);
+}
+
+
+/* $Log$
+/* Revision 1.1 1997/05/21 15:57:52 curt
+/* Renamed due to added GLUT support.
+/*
+ * Revision 1.3 1997/05/19 18:22:42 curt
+ * Parameter tweaking ... starting to stub in fog support.
+ *
+ * Revision 1.2 1997/05/17 00:17:35 curt
+ * Trying to stub in support for standard OpenGL.
+ *
+ * Revision 1.1 1997/05/16 16:05:52 curt
+ * Initial revision.
+ *
+ */
projects / flightgear.git / commitdiff