class TestContext(testingcontext.getInteractive()):
"""Create a simple vertex shader."""
def __init__(self):
super(TestContext, self).__init__()
self.shader = None
self.vbo = []
def OnInit(self):
"""Init"""
vertex = shaders.compileShader(
"""
#version 120
void main()
{
gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
}
""", GL_VERTEX_SHADER)
fragment = shaders.compileShader(
"""
#version 120
void main ()
{
gl_FragColor = vec4(0, 1, 0, 1);
}
""", GL_FRAGMENT_SHADER)
self.shader = shaders.compileProgram(vertex, fragment)
self.vbo = vbo.VBO(
array([
[0, 1, 0],
[-1, -1, 0],
[1, -1, 0],
[2, -1, 0],
[4, -1, 0],
[4, 1, 0],
[2, -1, 0],
[4, 1, 0],
[2, 1, 0],
], 'f')
)
def Render(self, mode):
"""Render the geometry for the scene."""
shaders.glUseProgram(self.shader)
try:
self.vbo.bind()
try:
glEnableClientState(GL_VERTEX_ARRAY)
GLVertexPointer(self.vbo)
glDrawArrays(GL_TRIANGLES, 0, 9)
finally:
self.vbo.unbind()
glDisableClientState(GL_VERTEX_ARRAY)
finally:
shaders.glUseProgram(0)
#! /usr/bin/env python
'''=Texture Mapping (NeHe 6)=
[nehe6.py-screen-0001.png Screenshot]
This tutorial is based on the [http://nehe.gamedev.net/data/lessons/lesson.asp?lesson=06 NeHe6 tutorial] by Jeff Molofee and assumes that you are reading along
with the tutorial, so that only changes from the tutorial are noted
here.
'''
from OpenGLContext import testingcontext
BaseContext = testingcontext.getInteractive()
from OpenGL.GL import *
import time
try:
from PIL.Image import open
except ImportError as err:
from Image import open
class TestContext(BaseContext):
"""NeHe 6 Demo"""
initialPosition = (
0, 0, 0
) # set initial camera position, tutorial does the re-positioning
'''OnInit is called by the Context class after initialization
of the context has completed, and before any rendering is
attempted. Within this method, you'll generally perform
your global setup tasks.'''
def OnInit(self):
#! /usr/bin/env python
'''Test of transparent, sorted IndexedFaceSet geometry
'''
from OpenGLContext import testingcontext
BaseContext = testingcontext.getInteractive()
from OpenGL.GL import *
from OpenGL.GLU import *
from OpenGLContext import drawcube, context
from OpenGLContext.arrays import *
import string, time, StringIO
from OpenGLContext.scenegraph.basenodes import *
def loadData( data ):
file = StringIO.StringIO( data )
points = []
indices = []
readingPoints = 1
while readingPoints:
line = file.readline().strip().split()
if len(line) > 1:
points.append( map( float, line ))
else:
readingPoints = 0
readingIndices = 1
while readingIndices:
line = file.readline().strip().split()
if len(line) > 1:
indices.extend( map( int, line ))
else:
readingIndices = 0
#! /usr/bin/env python
'''Test of the glDrawArrays function (draws flower)'''
from OpenGLContext import testingcontext
BaseContext, MainFunction = testingcontext.getInteractive()
from OpenGL.GL import *
from OpenGLContext.arrays import array
import string
from OpenGLContext.tests import flower_geometry
class TestContext(BaseContext):
def OnInit(self):
"""Initialisation"""
print """Should see flower pattern in gray over white background"""
def Render(self, mode=0):
BaseContext.Render(self, mode)
glVertexPointerd(flower_geometry.points_expanded)
glNormalPointerf(flower_geometry.normals_expanded)
glEnableClientState(GL_VERTEX_ARRAY)
glEnableClientState(GL_NORMAL_ARRAY)
glDrawArrays(GL_TRIANGLES, 0, len(flower_geometry.points_expanded))
if __name__ == "__main__":
MainFunction(TestContext)
#! /usr/bin/env python '''Test of the glDrawArrays function (draws flower)''' from OpenGLContext import testingcontext BaseContext, MainFunction = testingcontext.getInteractive() from OpenGL.GL import * from OpenGLContext.arrays import array import string from OpenGLContext.tests import flower_geometry class TestContext( BaseContext): def OnInit( self ): """Initialisation""" print """Should see flower pattern in gray over white background""" def Render( self, mode = 0): BaseContext.Render( self, mode ) glVertexPointerd(flower_geometry.points_expanded ) glNormalPointerf(flower_geometry.normals_expanded ) glEnableClientState(GL_VERTEX_ARRAY); glEnableClientState(GL_NORMAL_ARRAY); glDrawArrays(GL_TRIANGLES, 0, len(flower_geometry.points_expanded)) if __name__ == "__main__": MainFunction ( TestContext)
#! /usr/bin/env python
import numpy as np
import sys
# Get OpenGL
try:
from OpenGL.GL import *
from OpenGL.GLUT import *
from OpenGL.GLU import *
from OpenGL.arrays import vbo
from OpenGL.GL import shaders
except TypeError as te:
print('Encountered a TypeError, PyOpenGL is outdated.')
print('pip is known to install outdated PyOpenGL, this is a bug.')
print('You can get a newer version by going to the link below')
print('https://pypi.python.org/pypi/PyOpenGL/3.1.1a1')
print('(this information current as of June 2016)')
raise te
try:
import OpenGLContext
except:
print('The package OpenGLContext is missing.')
print('It can be installed via')
print('sudo pip install PyDispatcher PyVRML97 OpenGLContext')
from OpenGLContext import testingcontext BaseContext = testingcontext.getInteractive()
import OpenGL.GL as GL
import OpenGL.GL.shaders as GLshaders
import OpenGL.arrays.vbo as GLvbo
import numpy as np
import OpenGLContext.testingcontext as GLCtc
BaseContext = GLCtc.getInteractive()
class TestContext(BaseContext):
def OnInit(self):
VERTEX_SHADER = GLshaders.compileShader("""#version 120
void main(){
gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
}""", GL.GL_VERTEX_SHADER) #Defining the vertex shader
FRAGMENT_SHADER = GLshaders.compileShader("""#version 120
void main(){
gl_FragColor = vec4(0.2,1,0.5,1);
}""", GL.GL_FRAGMENT_SHADER) #Defining the fragment shader
myTriangle = np.array([
[ 0, 2, 0],
[-1, 0, 0],
[ 1, 0, 0]
], dtype='f')
self.myShader = GLshaders.compileProgram(VERTEX_SHADER,FRAGMENT_SHADER)
self.vbo = GLvbo.VBO(myTriangle)
