[sdlgit/SDL_perl.git] / test / OpenGL / tutorial / lesson05.sdlpl

#!/usr/bin/env perl
#
# lesson05.pl
#
# Copyright (C) 2005 David J. Goehrig <dgoehrig@cpan.org>
#
# ------------------------------------------------------------------------------
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
# 
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.
# 
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
#
# ------------------------------------------------------------------------------
#
# Please feel free to send questions, suggestions or improvements to:
#
#	David J. Goehrig
#	dgoehrig@cpan.org
#

use strict;
use Getopt::Long;
use SDL;
use SDL::App;
use SDL::OpenGL;
use SDL::Event;
use SDL::Cursor;     

my $arg_screen_width =640;
my $arg_screen_height=512;
my $arg_fullscreen=0;
my $delay = 30;

GetOptions(
	   "width:i"        => \$arg_screen_width,
	   "height:i"       => \$arg_screen_height,
	   "fullscreen!"    => \$arg_fullscreen,
	   "delay:i"	    => \$delay,
	  ) or die $!;

main();
exit;


sub main
  {  
   my $done=0;
   
   my $app = new SDL::App ( -title => "Jeff Molofee's GL Code Tutorial ... NeHe '99", 
			    -icon => "icon.png",
			    -width => $arg_screen_width,
			    -height =>$arg_screen_height,
			    -opengl => 1,
			  );

	$app->fullscreen if ($arg_fullscreen);
   
   SDL::ShowCursor(0);   
   
   my $event = new SDL::Event;
   $event->set(SDL_SYSWMEVENT(),SDL_IGNORE());#
   
   InitGL($arg_screen_width, $arg_screen_height);

   while ( ! $done ) {

    DrawGLScene();

    $app->sync();
    $app->delay($delay);
   
    $event->pump;
    $event->poll;
    
    
    if ( $event->type == SDL_QUIT() ) {
     $done = 1;
    }

    if ( $event->type == SDL_KEYDOWN() ) {
     if ( $event->key_sym == SDLK_ESCAPE() ) {
      $done = 1;
     }
    }
   }
  }


#########################################################################
#Pretty much in original form, but 'Perlised' 


#/* rotation angle for the triangle. */
my $rtri = 0.0;

#/* rotation angle for the quadrilateral. */
my $rquad = 0.0;


sub InitGL
  {
   my ($Width, $Height)=@_;

   glViewport(0, 0, $Width, $Height);
   glClearColor(0.0, 0.0, 0.0, 0.0);				# This Will Clear The Background Color To Black
   glClearDepth(1.0);						# Enables Clearing Of The Depth Buffer
   glDepthFunc(GL_LESS);					# The Type Of Depth Test To Do
   glEnable(GL_DEPTH_TEST);					# Enables Depth Testing
   glShadeModel(GL_SMOOTH);					# Enables Smooth Color Shading
   
   glMatrixMode(GL_PROJECTION);
   glLoadIdentity();						# Reset The Projection Matrix
   
   gluPerspective(45.0, $Width/$Height, 0.1, 100.0);		# Calculate The Aspect Ratio Of The Window
   
   glMatrixMode(GL_MODELVIEW);
  }


# The main drawing function.
sub DrawGLScene
  {
   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);		# Clear The Screen And The Depth Buffer
   glLoadIdentity();						# Reset The View
   
  glTranslate(-1.5,0.0,-6.0);		# Move Left 1.5 Units And Into The Screen 6.0
	
  glRotate($rtri,0.0,1.0,0.0);		# Rotate The Pyramid On The Y axis 

  # draw a pyramid (in smooth coloring mode)
  glBegin(GL_POLYGON);				# start drawing a pyramid

  # front face of pyramid
  glColor(1.0,0.0,0.0);			# Set The Color To Red
  glVertex(0.0, 1.0, 0.0);		        # Top of triangle (front)
  glColor(0.0,1.0,0.0);			# Set The Color To Green
  glVertex(-1.0,-1.0, 1.0);		# left of triangle (front)
  glColor(0.0,0.0,1.0);			# Set The Color To Blue
  glVertex(1.0,-1.0, 1.0);		        # right of traingle (front)	

  # right face of pyramid
  glColor(1.0,0.0,0.0);			# Red
  glVertex( 0.0, 1.0, 0.0);		# Top Of Triangle (Right)
  glColor(0.0,0.0,1.0);			# Blue
  glVertex( 1.0,-1.0, 1.0);		# Left Of Triangle (Right)
  glColor(0.0,1.0,0.0);			# Green
  glVertex( 1.0,-1.0, -1.0);		# Right Of Triangle (Right)

  # back face of pyramid
  glColor(1.0,0.0,0.0);			# Red
  glVertex( 0.0, 1.0, 0.0);		# Top Of Triangle (Back)
  glColor(0.0,1.0,0.0);			# Green
  glVertex( 1.0,-1.0, -1.0);		# Left Of Triangle (Back)
  glColor(0.0,0.0,1.0);			# Blue
  glVertex(-1.0,-1.0, -1.0);		# Right Of Triangle (Back)

  # left face of pyramid.
  glColor(1.0,0.0,0.0);			# Red
  glVertex( 0.0, 1.0, 0.0);		# Top Of Triangle (Left)
  glColor(0.0,0.0,1.0);			# Blue
  glVertex(-1.0,-1.0,-1.0);		# Left Of Triangle (Left)
  glColor(0.0,1.0,0.0);			# Green
  glVertex(-1.0,-1.0, 1.0);		# Right Of Triangle (Left)

  glEnd();					# Done Drawing The Pyramid

  glLoadIdentity();				# make sure we're no longer rotated.
  glTranslate(1.5,0.0,-7.0);		# Move Right 3 Units, and back into the screen 7
	
  glRotate($rquad,1.0,1.0,1.0);		# Rotate The Cube On X, Y, and Z

  # draw a cube (6 quadrilaterals)
  glBegin(GL_QUADS);				# start drawing the cube.
  
  # top of cube
  glColor(0.0,1.0,0.0);			# Set The Color To Blue
  glVertex( 1.0, 1.0,-1.0);		# Top Right Of The Quad (Top)
  glVertex(-1.0, 1.0,-1.0);		# Top Left Of The Quad (Top)
  glVertex(-1.0, 1.0, 1.0);		# Bottom Left Of The Quad (Top)
  glVertex( 1.0, 1.0, 1.0);		# Bottom Right Of The Quad (Top)

  # bottom of cube
  glColor(1.0,0.5,0.0);			# Set The Color To Orange
  glVertex( 1.0,-1.0, 1.0);		# Top Right Of The Quad (Bottom)
  glVertex(-1.0,-1.0, 1.0);		# Top Left Of The Quad (Bottom)
  glVertex(-1.0,-1.0,-1.0);		# Bottom Left Of The Quad (Bottom)
  glVertex( 1.0,-1.0,-1.0);		# Bottom Right Of The Quad (Bottom)

  # front of cube
  glColor(1.0,0.0,0.0);			# Set The Color To Red
  glVertex( 1.0, 1.0, 1.0);		# Top Right Of The Quad (Front)
  glVertex(-1.0, 1.0, 1.0);		# Top Left Of The Quad (Front)
  glVertex(-1.0,-1.0, 1.0);		# Bottom Left Of The Quad (Front)
  glVertex( 1.0,-1.0, 1.0);		# Bottom Right Of The Quad (Front)

  # back of cube.
  glColor(1.0,1.0,0.0);			# Set The Color To Yellow
  glVertex( 1.0,-1.0,-1.0);		# Top Right Of The Quad (Back)
  glVertex(-1.0,-1.0,-1.0);		# Top Left Of The Quad (Back)
  glVertex(-1.0, 1.0,-1.0);		# Bottom Left Of The Quad (Back)
  glVertex( 1.0, 1.0,-1.0);		# Bottom Right Of The Quad (Back)

  # left of cube
  glColor(0.0,0.0,1.0);			# Blue
  glVertex(-1.0, 1.0, 1.0);		# Top Right Of The Quad (Left)
  glVertex(-1.0, 1.0,-1.0);		# Top Left Of The Quad (Left)
  glVertex(-1.0,-1.0,-1.0);		# Bottom Left Of The Quad (Left)
  glVertex(-1.0,-1.0, 1.0);		# Bottom Right Of The Quad (Left)

  # Right of cube
  glColor(1.0,0.0,1.0);			# Set The Color To Violet
  glVertex( 1.0, 1.0,-1.0);	        # Top Right Of The Quad (Right)
  glVertex( 1.0, 1.0, 1.0);		# Top Left Of The Quad (Right)
  glVertex( 1.0,-1.0, 1.0);		# Bottom Left Of The Quad (Right)
  glVertex( 1.0,-1.0,-1.0);		# Bottom Right Of The Quad (Right)
  glEnd();					# Done Drawing The Cube

  $rtri+=15.0;					# Increase The Rotation Variable For The Triangle
  $rquad-=15.0;					# Decrease The Rotation Variable For The Quad 
 
   
  }
Commit	Line	Data
bfd90409	1	#!/usr/bin/env perl
	2	#
	3	# lesson05.pl
	4	#
	5	# Copyright (C) 2005 David J. Goehrig <dgoehrig@cpan.org>
	6	#
	7	# ------------------------------------------------------------------------------
	8	#
	9	# This library is free software; you can redistribute it and/or
	10	# modify it under the terms of the GNU Lesser General Public
	11	# License as published by the Free Software Foundation; either
	12	# version 2.1 of the License, or (at your option) any later version.
	13	#
	14	# This library is distributed in the hope that it will be useful,
	15	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	17	# Lesser General Public License for more details.
	18	#
	19	# You should have received a copy of the GNU Lesser General Public
	20	# License along with this library; if not, write to the Free Software
	21	# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	22	#
	23	# ------------------------------------------------------------------------------
	24	#
	25	# Please feel free to send questions, suggestions or improvements to:
	26	#
	27	# David J. Goehrig
	28	# dgoehrig@cpan.org
	29	#
	30
	31	use strict;
	32	use Getopt::Long;
	33	use SDL;
	34	use SDL::App;
	35	use SDL::OpenGL;
	36	use SDL::Event;
	37	use SDL::Cursor;
	38
	39	my $arg_screen_width =640;
	40	my $arg_screen_height=512;
	41	my $arg_fullscreen=0;
	42	my $delay = 30;
	43
	44	GetOptions(
	45	"width:i" => \$arg_screen_width,
	46	"height:i" => \$arg_screen_height,
	47	"fullscreen!" => \$arg_fullscreen,
	48	"delay:i" => \$delay,
	49	) or die $!;
	50
	51	main();
	52	exit;
	53
	54
	55	sub main
	56	{
	57	my $done=0;
	58
	59	my $app = new SDL::App ( -title => "Jeff Molofee's GL Code Tutorial ... NeHe '99",
	60	-icon => "icon.png",
	61	-width => $arg_screen_width,
	62	-height =>$arg_screen_height,
	63	-opengl => 1,
	64	);
65
66	$app->fullscreen if ($arg_fullscreen);
67
68	SDL::ShowCursor(0);
69
70	my $event = new SDL::Event;
71	$event->set(SDL_SYSWMEVENT(),SDL_IGNORE());#
72
73	InitGL($arg_screen_width, $arg_screen_height);
74
75	while ( ! $done ) {
76
77	DrawGLScene();
78
79	$app->sync();
80	$app->delay($delay);
81
82	$event->pump;
83	$event->poll;
84
85
86	if ( $event->type == SDL_QUIT() ) {
87	$done = 1;
88	}
89
90	if ( $event->type == SDL_KEYDOWN() ) {
91	if ( $event->key_sym == SDLK_ESCAPE() ) {
92	$done = 1;
93	}
94	}
95	}
96	}
97
98
99
100
101
102
103	#########################################################################
104	#Pretty much in original form, but 'Perlised'
105
106
107
108	#/* rotation angle for the triangle. */
109	my $rtri = 0.0;
110
111	#/* rotation angle for the quadrilateral. */
112	my $rquad = 0.0;
113
114
115	sub InitGL
116	{
117	my ($Width, $Height)=@_;
118
119	glViewport(0, 0, $Width, $Height);
120	glClearColor(0.0, 0.0, 0.0, 0.0); # This Will Clear The Background Color To Black
121	glClearDepth(1.0); # Enables Clearing Of The Depth Buffer
122	glDepthFunc(GL_LESS); # The Type Of Depth Test To Do
123	glEnable(GL_DEPTH_TEST); # Enables Depth Testing
124	glShadeModel(GL_SMOOTH); # Enables Smooth Color Shading
125
126	glMatrixMode(GL_PROJECTION);
127	glLoadIdentity(); # Reset The Projection Matrix
128
129	gluPerspective(45.0, $Width/$Height, 0.1, 100.0); # Calculate The Aspect Ratio Of The Window
130
131	glMatrixMode(GL_MODELVIEW);
132	}
133
134
135
136	# The main drawing function.
137	sub DrawGLScene
138	{
139	glClear(GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT); # Clear The Screen And The Depth Buffer
140	glLoadIdentity(); # Reset The View
141
142	glTranslate(-1.5,0.0,-6.0); # Move Left 1.5 Units And Into The Screen 6.0
143
144	glRotate($rtri,0.0,1.0,0.0); # Rotate The Pyramid On The Y axis
145
146	# draw a pyramid (in smooth coloring mode)
147	glBegin(GL_POLYGON); # start drawing a pyramid
148
149	# front face of pyramid
150	glColor(1.0,0.0,0.0); # Set The Color To Red
151	glVertex(0.0, 1.0, 0.0); # Top of triangle (front)
152	glColor(0.0,1.0,0.0); # Set The Color To Green
153	glVertex(-1.0,-1.0, 1.0); # left of triangle (front)
154	glColor(0.0,0.0,1.0); # Set The Color To Blue
155	glVertex(1.0,-1.0, 1.0); # right of traingle (front)
156
157	# right face of pyramid
158	glColor(1.0,0.0,0.0); # Red
159	glVertex( 0.0, 1.0, 0.0); # Top Of Triangle (Right)
160	glColor(0.0,0.0,1.0); # Blue
161	glVertex( 1.0,-1.0, 1.0); # Left Of Triangle (Right)
162	glColor(0.0,1.0,0.0); # Green
163	glVertex( 1.0,-1.0, -1.0); # Right Of Triangle (Right)
164
165	# back face of pyramid
166	glColor(1.0,0.0,0.0); # Red
167	glVertex( 0.0, 1.0, 0.0); # Top Of Triangle (Back)
168	glColor(0.0,1.0,0.0); # Green
169	glVertex( 1.0,-1.0, -1.0); # Left Of Triangle (Back)
170	glColor(0.0,0.0,1.0); # Blue
171	glVertex(-1.0,-1.0, -1.0); # Right Of Triangle (Back)
172
173	# left face of pyramid.
174	glColor(1.0,0.0,0.0); # Red
175	glVertex( 0.0, 1.0, 0.0); # Top Of Triangle (Left)
176	glColor(0.0,0.0,1.0); # Blue
177	glVertex(-1.0,-1.0,-1.0); # Left Of Triangle (Left)
178	glColor(0.0,1.0,0.0); # Green
179	glVertex(-1.0,-1.0, 1.0); # Right Of Triangle (Left)
180
181	glEnd(); # Done Drawing The Pyramid
182
183	glLoadIdentity(); # make sure we're no longer rotated.
184	glTranslate(1.5,0.0,-7.0); # Move Right 3 Units, and back into the screen 7
185
186	glRotate($rquad,1.0,1.0,1.0); # Rotate The Cube On X, Y, and Z
187
188	# draw a cube (6 quadrilaterals)
189	glBegin(GL_QUADS); # start drawing the cube.
190
191	# top of cube
192	glColor(0.0,1.0,0.0); # Set The Color To Blue
193	glVertex( 1.0, 1.0,-1.0); # Top Right Of The Quad (Top)
194	glVertex(-1.0, 1.0,-1.0); # Top Left Of The Quad (Top)
195	glVertex(-1.0, 1.0, 1.0); # Bottom Left Of The Quad (Top)
196	glVertex( 1.0, 1.0, 1.0); # Bottom Right Of The Quad (Top)
197
198	# bottom of cube
199	glColor(1.0,0.5,0.0); # Set The Color To Orange
200	glVertex( 1.0,-1.0, 1.0); # Top Right Of The Quad (Bottom)
201	glVertex(-1.0,-1.0, 1.0); # Top Left Of The Quad (Bottom)
202	glVertex(-1.0,-1.0,-1.0); # Bottom Left Of The Quad (Bottom)
203	glVertex( 1.0,-1.0,-1.0); # Bottom Right Of The Quad (Bottom)
204
205	# front of cube
206	glColor(1.0,0.0,0.0); # Set The Color To Red
207	glVertex( 1.0, 1.0, 1.0); # Top Right Of The Quad (Front)
208	glVertex(-1.0, 1.0, 1.0); # Top Left Of The Quad (Front)
209	glVertex(-1.0,-1.0, 1.0); # Bottom Left Of The Quad (Front)
210	glVertex( 1.0,-1.0, 1.0); # Bottom Right Of The Quad (Front)
211
212	# back of cube.
213	glColor(1.0,1.0,0.0); # Set The Color To Yellow
214	glVertex( 1.0,-1.0,-1.0); # Top Right Of The Quad (Back)
215	glVertex(-1.0,-1.0,-1.0); # Top Left Of The Quad (Back)
216	glVertex(-1.0, 1.0,-1.0); # Bottom Left Of The Quad (Back)
217	glVertex( 1.0, 1.0,-1.0); # Bottom Right Of The Quad (Back)
218
219	# left of cube
220	glColor(0.0,0.0,1.0); # Blue
221	glVertex(-1.0, 1.0, 1.0); # Top Right Of The Quad (Left)
222	glVertex(-1.0, 1.0,-1.0); # Top Left Of The Quad (Left)
223	glVertex(-1.0,-1.0,-1.0); # Bottom Left Of The Quad (Left)
224	glVertex(-1.0,-1.0, 1.0); # Bottom Right Of The Quad (Left)
225
226	# Right of cube
227	glColor(1.0,0.0,1.0); # Set The Color To Violet
228	glVertex( 1.0, 1.0,-1.0); # Top Right Of The Quad (Right)
229	glVertex( 1.0, 1.0, 1.0); # Top Left Of The Quad (Right)
230	glVertex( 1.0,-1.0, 1.0); # Bottom Left Of The Quad (Right)
231	glVertex( 1.0,-1.0,-1.0); # Bottom Right Of The Quad (Right)
232	glEnd(); # Done Drawing The Cube
233
234	$rtri+=15.0; # Increase The Rotation Variable For The Triangle
235	$rquad-=15.0; # Decrease The Rotation Variable For The Quad
236
237
238	}
239
240
241
242