tforgione/model-converter-python
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Starting to work with VBOs

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Thomas FORGIONE
2016-11-23 12:07:47 +01:00
parent 0bd7eae818
commit 1b769e05d3
2 changed files with 55 additions and 25 deletions
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conv3d/model.py
+47 -21
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@@ -92,6 +92,7 @@ class ModelParser:
self.faces = []
self.bounding_box = BoundingBox()
self.center_and_scale = True
self.vbo = None
def add_vertex(self, vertex):
self.vertices.append(vertex)
@@ -128,33 +129,58 @@ class ModelParser:
gl.glScalef(1/scale, 1/scale, 1/scale)
gl.glTranslatef(-center.x, -center.y, -center.z)
gl.glBegin(gl.GL_TRIANGLES)
if self.vbo is not None:
self.vbo.bind()
gl.glEnableClientState(gl.GL_VERTEX_ARRAY);
gl.glVertexPointerf(self.vbo)
gl.glDrawArrays(gl.GL_TRIANGLES, 0, len(self.vbo.data) * 9)
self.vbo.unbind()
else:
gl.glBegin(gl.GL_TRIANGLES)
for face in self.faces:
v1 = self.vertices[face.a.vertex]
v2 = self.vertices[face.b.vertex]
v3 = self.vertices[face.c.vertex]
if face.a.normal is not None:
n1 = self.normals[face.a.normal]
n2 = self.normals[face.b.normal]
n3 = self.normals[face.c.normal]
if face.a.normal is not None:
gl.glNormal3f(n1.x, n1.y, n1.z)
gl.glVertex3f(v1.x, v1.y, v1.z)
if face.a.normal is not None:
gl.glNormal3f(n2.x, n2.y, n2.z)
gl.glVertex3f(v2.x, v2.y, v2.z)
if face.a.normal is not None:
gl.glNormal3f(n3.x, n3.y, n3.z)
gl.glVertex3f(v3.x, v3.y, v3.z)
gl.glEnd()
if self.center_and_scale:
gl.glPopMatrix()
def generate_vbo(self):
from OpenGL.arrays import vbo
from numpy import array
# Build VBO
l = []
for face in self.faces:
v1 = self.vertices[face.a.vertex]
v2 = self.vertices[face.b.vertex]
v3 = self.vertices[face.c.vertex]
l += [[v1.x, v1.y, v1.z], [v2.x, v2.y, v2.z], [v3.x, v3.y, v3.z]]
if face.a.normal is not None:
n1 = self.normals[face.a.normal]
n2 = self.normals[face.b.normal]
n3 = self.normals[face.c.normal]
self.vbo = vbo.VBO(array(l, 'f'))
if face.a.normal is not None:
gl.glNormal3f(n1.x, n1.y, n1.z)
gl.glVertex3f(v1.x, v1.y, v1.z)
if face.a.normal is not None:
gl.glNormal3f(n2.x, n2.y, n2.z)
gl.glVertex3f(v2.x, v2.y, v2.z)
if face.a.normal is not None:
gl.glNormal3f(n3.x, n3.y, n3.z)
gl.glVertex3f(v3.x, v3.y, v3.z)
gl.glEnd()
if self.center_and_scale:
gl.glPopMatrix()
def generate_vertex_normals(self):
self.normals = [Normal() for i in self.vertices]