class GameObject:
def __init__(self, *args, **kwargs):
self.program = Program()
self.vao = GLuint(0)
self.vbo = GLuint(0)
self.ebo = GLuint(0)
# Create Vertex Array Object
glGenVertexArrays(1, self.vao)
# Create a Vertex Buffer Object
glGenBuffers(1, self.vbo)
# Create an element array
glGenBuffers(1, self.ebo)
# use the vao
glBindVertexArray(self.vao)
width = float(100)
height = float(100)
r = 1.0
g = 0.0
b = 0.0
# self.vertices = [
# 0.0, 0.0, r, g, b, # Top-left
# 0.0 + width, 0.0, r, g, b, # Top-right
# 0.0 + width, 0.0 + height, r, g, b, # Bottom-right
# 0.0, 0.0 + height, r, g, b # Bottom-left
# ]
# self.vertices_gl = (GLfloat * len(self.vertices))(*self.vertices)
self.vertices = [
0.0, 0.0,
0.0 + width, 0.0,
0.0 + width, 0.0 + height,
0.0, 0.0 + height,
]
self.vertices_gl = (GLfloat * len(self.vertices))(*self.vertices)
glBindBuffer(GL_ARRAY_BUFFER, self.vbo)
glBufferData(GL_ARRAY_BUFFER, sizeof(self.vertices_gl), self.vertices_gl, GL_STATIC_DRAW)
self.elements = [
0, 1, 2,
2, 3, 0
]
self.elements_gl = (GLuint * len(self.elements))(*self.elements)
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, self.ebo)
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(self.elements_gl), self.elements_gl, GL_STATIC_DRAW)
self.program.compile_shader_from_string(
"""
layout (location = 0) in vec2 position;
uniform mat4 proj;
uniform mat4 view;
uniform mat4 model;
void main()
{
gl_Position = proj * view * model * vec4(position, 0.0, 1.0);
}
""", 'vertex')
self.program.compile_shader_from_string(
"""
void main()
{
gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
}
""", 'fragment')
if not self.program.link():
return
if not self.program.validate():
return
self.program.bind()
# Specify the layout of the vertex data
position_attribute = glGetAttribLocation(self.program.get_handle(), "position")
if position_attribute > -1:
glEnableVertexAttribArray(position_attribute)
glVertexAttribPointer(position_attribute, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(GLfloat), 0)
# color_attribute = glGetAttribLocation(self.program.get_handle(), "color")
# if color_attribute > -1:
# glEnableVertexAttribArray(color_attribute)
# glVertexAttribPointer(color_attribute, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(GLfloat), 2 * sizeof(GLfloat))
# stop the vao
glBindVertexArray(0)
# def new_look_at(self, eye, at, up):
# z = (eye - at).normalized()
# x = up.cross(z).normalized()
# y = z.cross(x)
#
# m = Matrix4.new_rotate_triple_axis(x, y, z)
# m.d, m.h, m.l = -x.dot(eye), -y.dot(eye), -z.dot(eye)
# return m
def ortho(self, left, right, bottom, top, znear, zfar):
mtx = Matrix4().identity()
mtx.a = 2.0 / (right - left)
mtx.f = 2.0 / (top - bottom)
mtx.k = - 2.0 / (zfar - znear)
mtx.m = - (right + left) / (right - left)
mtx.n = - (top + bottom) / (top - bottom)
mtx.o = - (zfar + znear) / (zfar - znear)
mtx.transpose()
return mtx
def render(self):
self.program.bind()
# view_matrix = mat4x4.identity()
# proj_matrix = mat4x4.identity()
# model_matrix = mat4x4.identity()
# mvp_matrix = mat4x4.identity()
# eye, at, up
# eye = Vector3(2.5, 2.5, 2.0)
# at = Vector3(0.0, 0.0, 0.0)
# up = Vector3(0.0, 0.0, 1.0)
# #view_matrix = Matrix4.new_look_at(eye, at, up)
# view_matrix = self.new_look_at(eye, at, up)
# view_matrix = view_matrix.transposed()
# view_ctype = (GLfloat * len(view_matrix))(*view_matrix)
#
# view_location = glGetUniformLocation(self.program.get_handle(), "view")
# if view_location > -1:
# glUniformMatrix4fv(view_location, 1, GL_FALSE, view_ctype)
#
# proj = Matrix4.new_perspective(45.0, 800.0 / 600.0, 1.0, 10.0)
# proj = proj.transposed()
# proj_ctype = (GLfloat * len(proj))(*proj)
# proj_location = glGetUniformLocation(self.program.get_handle(), "proj")
# if proj_location > -1:
# glUniformMatrix4fv(proj_location, 1, GL_FALSE, proj_ctype)
#
# model = Matrix4().identity()
# model = model.transposed()
# model_ctype = (GLfloat * len(model))(*model)
# model_location = glGetUniformLocation(self.program.get_handle(), "model")
# if model_location > -1:
# glUniformMatrix4fv(model_location, 1, GL_FALSE, model_ctype)
eye = Vector3(0.0, 0.0, 1.02)
at = Vector3(0.0, 0.0, 0.0)
up = Vector3(0.0, 1.0, 0.0)
view = Matrix4.new_look_at(eye, at, up)
view = view[:]
view_ctype = (GLfloat * len(view))(*view)
view_location = glGetUniformLocation(self.program.get_handle(), "view")
if view_location > -1:
glUniformMatrix4fv(view_location, 1, GL_FALSE, view_ctype)
#proj = Matrix4.new_perspective(math.radians(45.0), 800.0 / 600.0, 1.0, 10.0)
proj = self.ortho(0.0, 800.0, 600.0, 0.0, 10.0, -10.0)
proj = proj[:]
proj_ctype = (GLfloat * len(proj))(*proj)
proj_location = glGetUniformLocation(self.program.get_handle(), "proj")
if proj_location > -1:
glUniformMatrix4fv(proj_location, 1, GL_FALSE, proj_ctype)
#model = Quaternion.new_rotate_axis(time.clock() * math.pi, Vector3(0, 0, 1))
model = Matrix4().identity()
#model = model.get_matrix()
model = model[:]
model_ctype = (GLfloat * len(model))(*model)
model_location = glGetUniformLocation(self.program.get_handle(), "model")
if model_location > -1:
glUniformMatrix4fv(model_location, 1, GL_FALSE, model_ctype)
# bind vao for use
glBindVertexArray(self.vao)
# Draw a rectangle from the 2 triangles using 6 indices
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0)
# stop the vao
glBindVertexArray(0)
class Mesh(GameObject):
def __init__(self):
self.program = Program()
self.vao = GLuint(0)
self.vbuf = None
self.ibuf = None
self.vertices = []
self.normals = []
self.indices = []
self.uvs = []
# we should really be getting the camera not creating a new instance..
self.camera = Camera(800, 600)
GameObject.__init__(self)
def set_data(self, *args, **kwargs):
self.vertices = kwargs.get('vertices', [])
self.normals = kwargs.get('normals', [])
self.indices = kwargs.get('indices', [])
self.uvs = kwargs.get('uvs', [])
self.colors = kwargs.get('colors', [])
# create a vao
glGenVertexArrays(1, self.vao)
# use it
glBindVertexArray(self.vao)
# create a vertexbuffer
if self.vertices:
self.vbuf = VertexBuffer(self.vertices)
#self.vbuf.set_attribute(0, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(GLfloat), 0)
#self.vbuf.set_attribute(1, 2, GL_FLOAT, GL_FALSE, 2, 0)
# create an indexbuffer
if self.indices:
self.ibuf = IndexBuffer(self.indices)
self.program.compile_shader_from_string(
"""
layout (location = 0) in vec2 position;
layout (location = 1) in vec3 color;
uniform mat4 proj;
uniform mat4 view;
uniform mat4 model;
smooth out vec3 theColor;
void main()
{
theColor = color;
gl_Position = proj * view * model * vec4(position, 0.0, 1.0);
}
""", 'vertex')
self.program.compile_shader_from_string(
"""
smooth in vec3 theColor;
void main()
{
gl_FragColor = vec4(theColor, 1.0);
}
""", 'fragment')
self.program.link()
self.program.validate()
self.program.bind()
#self.vbuf.set_attribute(self.program.get_handle(), "position", 2, GL_FLOAT, GL_FALSE, 2 * sizeof(GLfloat), 0)
#self.vbuf.set_attribute(self.program.get_handle(), "color", 3, GL_FLOAT, GL_FALSE, 3 * sizeof(GLfloat), 0)
# Specify the layout of the vertex data
position_attribute = glGetAttribLocation(self.program.get_handle(), "position")
if position_attribute > -1:
glEnableVertexAttribArray(position_attribute)
glVertexAttribPointer(position_attribute, 2, GL_FLOAT, GL_FALSE, 5 * sizeof(GLfloat), 0)
color_attribute = glGetAttribLocation(self.program.get_handle(), "color")
if color_attribute > -1:
glEnableVertexAttribArray(color_attribute)
glVertexAttribPointer(color_attribute, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(GLfloat), 2 * sizeof(GLfloat))
# stop the vao
glBindVertexArray(0)
def render(self):
GameObject.render(self)
self.program.bind()
view_location = glGetUniformLocation(self.program.get_handle(), "view")
if view_location > -1:
v = self.camera.view
v = v[:]
v_ctype = (GLfloat * len(v))(*v)
glUniformMatrix4fv(view_location, 1, GL_FALSE, v_ctype)
proj_location = glGetUniformLocation(self.program.get_handle(), "proj")
if proj_location > -1:
p = self.camera.projection
p = p[:]
p_ctype = (GLfloat * len(p))(*p)
glUniformMatrix4fv(proj_location, 1, GL_FALSE, p_ctype)
model_location = glGetUniformLocation(self.program.get_handle(), "model")
if model_location > -1:
self.matrix = Matrix4.new_translate(self.position.x, self.position.y, self.position.z)
if self.parent:
m = Matrix4().identity()
m = self.parent.matrix * self.matrix
m = m[:]
else:
m = self.matrix[:]
m_ctype = (GLfloat * len(m))(*m)
glUniformMatrix4fv(model_location, 1, GL_FALSE, m_ctype)
# bind vao for use
glBindVertexArray(self.vao)
# Draw a rectangle from the 2 triangles using 6 indices
if self.indices:
glDrawElements(GL_TRIANGLES, len(self.indices), GL_UNSIGNED_INT, 0)
elif self.vertices:
pass #gldrawarray?
# stop the vao
glBindVertexArray(0)