get opengl samples going again
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6384 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robert Roebling
parent
77c4358743
commit
335258dcdd
9
samples/configure
vendored
9
samples/configure
vendored
@ -698,6 +698,10 @@ trap 'rm -fr `echo "
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html/zip/Makefile
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html/virtual/Makefile
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html/widget/Makefile
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opengl/Makefile
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opengl/cube/Makefile
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opengl/penguin/Makefile
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opengl/isosurf/Makefile
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" | sed "s/:[^ ]*//g"` conftest*; exit 1' 1 2 15
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EOF
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cat >> $CONFIG_STATUS <<EOF
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@ -785,6 +789,7 @@ CONFIG_FILES=\${CONFIG_FILES-"Makefile
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docview/Makefile
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docvwmdi/Makefile
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dnd/Makefile
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dragimag/Makefile
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drawing/Makefile
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exec/Makefile
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font/Makefile
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@ -830,6 +835,10 @@ CONFIG_FILES=\${CONFIG_FILES-"Makefile
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html/zip/Makefile
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html/virtual/Makefile
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html/widget/Makefile
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opengl/Makefile
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opengl/cube/Makefile
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opengl/penguin/Makefile
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opengl/isosurf/Makefile
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"}
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EOF
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cat >> $CONFIG_STATUS <<\EOF
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@ -66,4 +66,8 @@ AC_OUTPUT([
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html/zip/Makefile
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html/virtual/Makefile
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html/widget/Makefile
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opengl/Makefile
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opengl/cube/Makefile
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opengl/penguin/Makefile
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opengl/isosurf/Makefile
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])
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@ -15,6 +15,8 @@ program_dir = samples/dragimag
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PROGRAM=test
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DATAFILES = backgrnd.png shape1.png shape2.png shape3.png
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OBJECTS=$(PROGRAM).o
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include ../../src/makeprog.env
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15
samples/opengl/Makefile.in
Normal file
15
samples/opengl/Makefile.in
Normal file
@ -0,0 +1,15 @@
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#
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# Makefile : Builds OpenGl samples for Unix.
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#
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all:
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cd penguin && make
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cd cube && make
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cd isosurf && make
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clean:
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cd penguin && make clean
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cd cube && make clean
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cd isosurf && make clean
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@ -1,31 +0,0 @@
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#
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# File: Makefile
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# Author: Robert Roebling
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# Created: 1999
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# Updated:
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# Copyright: (c) 1998 Robert Roebling
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#
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# Makefile for OpenGl demo (GTK version)
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#
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# This makefile requires wxWindows/GTK to be
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# installed (possibly using "make install")
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# on your system.
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#
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CC = gcc
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WXCONFIG=../../../wx-config
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WXINCLUDE=-I../../../include
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WXLIB=-L../../../lib
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cube: cube.o # glcanvas.o
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$(CC) -o cube cube.o `$(WXCONFIG) --libs` $(WXLIB) -lMesaGL -lMesaGLU
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cube.o: cube.cpp
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$(CC) `$(WXCONFIG) --cflags` -I../../gtk $(WXINCLUDE) -c cube.cpp
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glcanvas.o: ../../gtk/glcanvas.cpp
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$(CC) `$(WXCONFIG) --cflags` `gtk-config --cflags` -I../../gtk $(WXINCLUDE) -c ../../gtk/glcanvas.cpp
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clean:
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rm -f *.o cube
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23
samples/opengl/cube/Makefile.in
Normal file
23
samples/opengl/cube/Makefile.in
Normal file
@ -0,0 +1,23 @@
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#
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# File: Makefile.in
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# Author: Julian Smart
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# Created: 1998
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# Updated:
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# Copyright: (c) 1998 Julian Smart
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#
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# "%W% %G%"
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#
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# Makefile for html about example (UNIX).
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top_srcdir = @top_srcdir@/..
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top_builddir = ../../..
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program_dir = samples/opengl/cube
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PROGRAM=cube
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LIBRARIES=-lMesaGL -lMesaGLU ../../../lib/libwx_gtk_gl.so
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OBJECTS=$(PROGRAM).o
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include ../../../src/makeprog.env
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@ -1,32 +0,0 @@
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#
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# File: Makefile
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# Author: Robert Roebling
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# Created: 1999
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# Updated:
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# Copyright: (c) 1998 Robert Roebling
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#
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# Makefile for OpenGl demo (GTK version)
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#
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# This makefile requires wxWindows/GTK to be
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# installed (possibly using "make install")
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# on your system.
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#
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CC = g++
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WXCONFIG=../../../wx-config
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WXINCLUDE=-I../../../include
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WXLIB=-L../../../lib
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isosurf: isosurf.o # glcanvas.o
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$(CC) -o isosurf \
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isosurf.o \
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`$(WXCONFIG) --libs` $(WXLIB) -lMesaGL -lMesaGLU
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isosurf.o: isosurf.cpp
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$(CC) `$(WXCONFIG) --cflags` -I../../gtk $(WXINCLUDE) -c isosurf.cpp
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glcanvas.o: ../../gtk/glcanvas.cpp
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$(CC) `$(WXCONFIG) --cflags` `gtk-config --cflags` -I../../gtk -c $(WXINCLUDE) ../../gtk/glcanvas.cpp
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clean:
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rm -f *.o isosurf
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25
samples/opengl/isosurf/Makefile.in
Normal file
25
samples/opengl/isosurf/Makefile.in
Normal file
@ -0,0 +1,25 @@
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#
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# File: Makefile.in
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# Author: Julian Smart
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# Created: 1998
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# Updated:
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# Copyright: (c) 1998 Julian Smart
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#
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# "%W% %G%"
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#
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# Makefile for html about example (UNIX).
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top_srcdir = @top_srcdir@/..
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top_builddir = ../../..
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program_dir = samples/opengl/isosurf
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DATAFILES = isosurf.dat.gz
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PROGRAM=isosurf
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LIBRARIES=-lMesaGL -lMesaGLU ../../../lib/libwx_gtk_gl.so
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OBJECTS=$(PROGRAM).o
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include ../../../src/makeprog.env
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@ -1,37 +0,0 @@
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#
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# File: Makefile
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# Author: Robert Roebling
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# Created: 1999
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# Updated:
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# Copyright: (c) 1998 Robert Roebling
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#
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# Makefile for OpenGL demo (GTK version)
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#
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# This makefile requires wxWindows/GTK to be
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# installed (possibly using "make install")
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# on your system.
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#
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CPP = gcc
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CC = gcc
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WXCONFIG=../../../wx-config
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WXINCLUDE=-I../../../include
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WXLIB=-L../../../lib
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Penguin: penguin.o trackball.o lw.o # glcanvas.o
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$(CPP) -o Penguin penguin.o trackball.o lw.o `$(WXCONFIG) --libs` $(WXLIB) -lMesaGL -lMesaGLU
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penguin.o: penguin.cpp
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$(CPP) `$(WXCONFIG) --cflags` -I../../gtk $(WXINCLUDE) -c penguin.cpp
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lw.o: lw.cpp
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$(CPP) `$(WXCONFIG) --cflags` -I../../gtk $(WXINCLUDE) -c lw.cpp
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trackball.o: trackball.c
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$(CC) `$(WXCONFIG) --cflags` -I../../gtk $(WXINCLUDE) -c trackball.c
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glcanvas.o: ../../gtk/glcanvas.cpp
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$(CPP) `$(WXCONFIG) --cflags` `gtk-config --cflags` -g -I../../gtk $(WXINCLUDE) -c ../../gtk/glcanvas.cpp
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clean:
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rm -f *.o Penguin
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25
samples/opengl/penguin/Makefile.in
Normal file
25
samples/opengl/penguin/Makefile.in
Normal file
@ -0,0 +1,25 @@
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#
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# File: Makefile.in
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# Author: Julian Smart
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# Created: 1998
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# Updated:
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# Copyright: (c) 1998 Julian Smart
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#
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# "%W% %G%"
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#
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# Makefile for html about example (UNIX).
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top_srcdir = @top_srcdir@/..
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top_builddir = ../../..
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program_dir = samples/opengl/penguin
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DATAFILES = penguin.lwo
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PROGRAM=penguin
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LIBRARIES=-lMesaGL -lMesaGLU ../../../lib/libwx_gtk_gl.so
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OBJECTS=$(PROGRAM).o lw.o trackball.o
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include ../../../src/makeprog.env
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324
samples/opengl/penguin/trackball.c
Normal file
324
samples/opengl/penguin/trackball.c
Normal file
@ -0,0 +1,324 @@
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/*
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* (c) Copyright 1993, 1994, Silicon Graphics, Inc.
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* ALL RIGHTS RESERVED
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* Permission to use, copy, modify, and distribute this software for
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* any purpose and without fee is hereby granted, provided that the above
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* copyright notice appear in all copies and that both the copyright notice
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* and this permission notice appear in supporting documentation, and that
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* the name of Silicon Graphics, Inc. not be used in advertising
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* or publicity pertaining to distribution of the software without specific,
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* written prior permission.
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*
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* THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
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* AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
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* FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
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* GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
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* SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
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* KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
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* LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
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* THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC. HAS BEEN
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* ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
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* POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* US Government Users Restricted Rights
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* Use, duplication, or disclosure by the Government is subject to
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* restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
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* (c)(1)(ii) of the Rights in Technical Data and Computer Software
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* clause at DFARS 252.227-7013 and/or in similar or successor
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* clauses in the FAR or the DOD or NASA FAR Supplement.
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* Unpublished-- rights reserved under the copyright laws of the
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* United States. Contractor/manufacturer is Silicon Graphics,
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* Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311.
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*
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* OpenGL(TM) is a trademark of Silicon Graphics, Inc.
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*/
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/*
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* Trackball code:
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*
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* Implementation of a virtual trackball.
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* Implemented by Gavin Bell, lots of ideas from Thant Tessman and
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* the August '88 issue of Siggraph's "Computer Graphics," pp. 121-129.
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*
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* Vector manip code:
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*
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* Original code from:
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* David M. Ciemiewicz, Mark Grossman, Henry Moreton, and Paul Haeberli
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*
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* Much mucking with by:
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* Gavin Bell
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*/
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#include <math.h>
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#include "trackball.h"
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/*
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* This size should really be based on the distance from the center of
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* rotation to the point on the object underneath the mouse. That
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* point would then track the mouse as closely as possible. This is a
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* simple example, though, so that is left as an Exercise for the
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* Programmer.
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*/
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#define TRACKBALLSIZE (0.8)
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/*
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* Local function prototypes (not defined in trackball.h)
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*/
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static float tb_project_to_sphere(float, float, float);
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static void normalize_quat(float [4]);
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void
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vzero(float *v)
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{
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v[0] = 0.0;
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v[1] = 0.0;
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v[2] = 0.0;
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}
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void
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vset(float *v, float x, float y, float z)
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{
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v[0] = x;
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v[1] = y;
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v[2] = z;
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}
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void
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vsub(const float *src1, const float *src2, float *dst)
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{
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dst[0] = src1[0] - src2[0];
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dst[1] = src1[1] - src2[1];
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dst[2] = src1[2] - src2[2];
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}
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void
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vcopy(const float *v1, float *v2)
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{
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register int i;
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for (i = 0 ; i < 3 ; i++)
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v2[i] = v1[i];
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}
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void
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vcross(const float *v1, const float *v2, float *cross)
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{
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float temp[3];
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temp[0] = (v1[1] * v2[2]) - (v1[2] * v2[1]);
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temp[1] = (v1[2] * v2[0]) - (v1[0] * v2[2]);
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temp[2] = (v1[0] * v2[1]) - (v1[1] * v2[0]);
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vcopy(temp, cross);
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}
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float
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vlength(const float *v)
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{
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return sqrt(v[0] * v[0] + v[1] * v[1] + v[2] * v[2]);
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}
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void
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vscale(float *v, float div)
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{
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v[0] *= div;
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v[1] *= div;
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v[2] *= div;
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}
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void
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vnormal(float *v)
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{
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vscale(v,1.0/vlength(v));
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}
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float
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vdot(const float *v1, const float *v2)
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{
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return v1[0]*v2[0] + v1[1]*v2[1] + v1[2]*v2[2];
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}
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void
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vadd(const float *src1, const float *src2, float *dst)
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{
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dst[0] = src1[0] + src2[0];
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dst[1] = src1[1] + src2[1];
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dst[2] = src1[2] + src2[2];
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}
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/*
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* Ok, simulate a track-ball. Project the points onto the virtual
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* trackball, then figure out the axis of rotation, which is the cross
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* product of P1 P2 and O P1 (O is the center of the ball, 0,0,0)
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* Note: This is a deformed trackball-- is a trackball in the center,
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* but is deformed into a hyperbolic sheet of rotation away from the
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* center. This particular function was chosen after trying out
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* several variations.
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*
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* It is assumed that the arguments to this routine are in the range
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* (-1.0 ... 1.0)
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*/
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void
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trackball(float q[4], float p1x, float p1y, float p2x, float p2y)
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{
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float a[3]; /* Axis of rotation */
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float phi; /* how much to rotate about axis */
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float p1[3], p2[3], d[3];
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float t;
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if (p1x == p2x && p1y == p2y) {
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/* Zero rotation */
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vzero(q);
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q[3] = 1.0;
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return;
|
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}
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/*
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* First, figure out z-coordinates for projection of P1 and P2 to
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* deformed sphere
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*/
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vset(p1,p1x,p1y,tb_project_to_sphere(TRACKBALLSIZE,p1x,p1y));
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vset(p2,p2x,p2y,tb_project_to_sphere(TRACKBALLSIZE,p2x,p2y));
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/*
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* Now, we want the cross product of P1 and P2
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*/
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vcross(p2,p1,a);
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/*
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* Figure out how much to rotate around that axis.
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*/
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vsub(p1,p2,d);
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t = vlength(d) / (2.0*TRACKBALLSIZE);
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/*
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* Avoid problems with out-of-control values...
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*/
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if (t > 1.0) t = 1.0;
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if (t < -1.0) t = -1.0;
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phi = 2.0 * asin(t);
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axis_to_quat(a,phi,q);
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}
|
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|
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/*
|
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* Given an axis and angle, compute quaternion.
|
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*/
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void
|
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axis_to_quat(float a[3], float phi, float q[4])
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{
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vnormal(a);
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vcopy(a,q);
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vscale(q,sin(phi/2.0));
|
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q[3] = cos(phi/2.0);
|
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}
|
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|
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/*
|
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* Project an x,y pair onto a sphere of radius r OR a hyperbolic sheet
|
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* if we are away from the center of the sphere.
|
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*/
|
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static float
|
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tb_project_to_sphere(float r, float x, float y)
|
||||
{
|
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float d, t, z;
|
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|
||||
d = sqrt(x*x + y*y);
|
||||
if (d < r * 0.70710678118654752440) { /* Inside sphere */
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||||
z = sqrt(r*r - d*d);
|
||||
} else { /* On hyperbola */
|
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t = r / 1.41421356237309504880;
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z = t*t / d;
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}
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||||
return z;
|
||||
}
|
||||
|
||||
/*
|
||||
* Given two rotations, e1 and e2, expressed as quaternion rotations,
|
||||
* figure out the equivalent single rotation and stuff it into dest.
|
||||
*
|
||||
* This routine also normalizes the result every RENORMCOUNT times it is
|
||||
* called, to keep error from creeping in.
|
||||
*
|
||||
* NOTE: This routine is written so that q1 or q2 may be the same
|
||||
* as dest (or each other).
|
||||
*/
|
||||
|
||||
#define RENORMCOUNT 97
|
||||
|
||||
void
|
||||
add_quats(float q1[4], float q2[4], float dest[4])
|
||||
{
|
||||
static int count=0;
|
||||
float t1[4], t2[4], t3[4];
|
||||
float tf[4];
|
||||
|
||||
vcopy(q1,t1);
|
||||
vscale(t1,q2[3]);
|
||||
|
||||
vcopy(q2,t2);
|
||||
vscale(t2,q1[3]);
|
||||
|
||||
vcross(q2,q1,t3);
|
||||
vadd(t1,t2,tf);
|
||||
vadd(t3,tf,tf);
|
||||
tf[3] = q1[3] * q2[3] - vdot(q1,q2);
|
||||
|
||||
dest[0] = tf[0];
|
||||
dest[1] = tf[1];
|
||||
dest[2] = tf[2];
|
||||
dest[3] = tf[3];
|
||||
|
||||
if (++count > RENORMCOUNT) {
|
||||
count = 0;
|
||||
normalize_quat(dest);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Quaternions always obey: a^2 + b^2 + c^2 + d^2 = 1.0
|
||||
* If they don't add up to 1.0, dividing by their magnitued will
|
||||
* renormalize them.
|
||||
*
|
||||
* Note: See the following for more information on quaternions:
|
||||
*
|
||||
* - Shoemake, K., Animating rotation with quaternion curves, Computer
|
||||
* Graphics 19, No 3 (Proc. SIGGRAPH'85), 245-254, 1985.
|
||||
* - Pletinckx, D., Quaternion calculus as a basic tool in computer
|
||||
* graphics, The Visual Computer 5, 2-13, 1989.
|
||||
*/
|
||||
static void
|
||||
normalize_quat(float q[4])
|
||||
{
|
||||
int i;
|
||||
float mag;
|
||||
|
||||
mag = (q[0]*q[0] + q[1]*q[1] + q[2]*q[2] + q[3]*q[3]);
|
||||
for (i = 0; i < 4; i++) q[i] /= mag;
|
||||
}
|
||||
|
||||
/*
|
||||
* Build a rotation matrix, given a quaternion rotation.
|
||||
*
|
||||
*/
|
||||
void
|
||||
build_rotmatrix(float m[4][4], float q[4])
|
||||
{
|
||||
m[0][0] = 1.0 - 2.0 * (q[1] * q[1] + q[2] * q[2]);
|
||||
m[0][1] = 2.0 * (q[0] * q[1] - q[2] * q[3]);
|
||||
m[0][2] = 2.0 * (q[2] * q[0] + q[1] * q[3]);
|
||||
m[0][3] = 0.0;
|
||||
|
||||
m[1][0] = 2.0 * (q[0] * q[1] + q[2] * q[3]);
|
||||
m[1][1]= 1.0 - 2.0 * (q[2] * q[2] + q[0] * q[0]);
|
||||
m[1][2] = 2.0 * (q[1] * q[2] - q[0] * q[3]);
|
||||
m[1][3] = 0.0;
|
||||
|
||||
m[2][0] = 2.0 * (q[2] * q[0] - q[1] * q[3]);
|
||||
m[2][1] = 2.0 * (q[1] * q[2] + q[0] * q[3]);
|
||||
m[2][2] = 1.0 - 2.0 * (q[1] * q[1] + q[0] * q[0]);
|
||||
m[2][3] = 0.0;
|
||||
|
||||
m[3][0] = 0.0;
|
||||
m[3][1] = 0.0;
|
||||
m[3][2] = 0.0;
|
||||
m[3][3] = 1.0;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user