Cleanup sea triangles creation.

This commit is contained in:
Roz K 2022-12-31 19:32:39 +01:00
parent 9e77e6680b
commit f66c6ea6e9
Signed by: roz
GPG Key ID: 51FBF4E483E1C822
2 changed files with 32 additions and 33 deletions

View File

@ -157,7 +157,7 @@ def main():
sea_polar_textures = sea.load_polar_textures(('data/sea_bump1.png', 'data/sea_bump2.png'))
sea_detail_texture = sea.load_detail_texture('data/sea_bump.png')
sea_triangles = sea.SeaTriangles(64, proj_far_z - 0.1, proj_ratio)
sea_triangles = sea.sea_triangles(64, proj_far_z - 0.1, proj_ratio)
scene = SceneNode(
FuncNode(update_camera, (mouse, camera, environment)),

View File

@ -71,35 +71,34 @@ def load_detail_texture(path, scale = 0.5, waves_height = 0.002):
data = array(_typecode, list(map(_conv, normals)))
return Texture(_format, width, height, 0, _flags, data)
class SeaTriangles(Triangles):
# TODO: with FOV
def __init__(self, vsubdivs, distance, projection_ratio):
assert vsubdivs > 0
vertices = []
hsubdivs = round(vsubdivs * projection_ratio)
z = -distance
width = distance * projection_ratio
height = distance
startx = width * -0.5
starty = height * -0.5
stepx = width / hsubdivs
stepy = height / vsubdivs
y1 = starty
y2 = y1 + stepy
for sy in range(vsubdivs):
x1 = startx
x2 = x1 + stepx
for sx in range(hsubdivs):
a = (x1, y2, z)
b = (x2, y1, z)
vertices.append((x1, y1, z))
vertices.append(b)
vertices.append(a)
vertices.append((x2, y2, z))
vertices.append(a)
vertices.append(b)
x1 = x2
x2 += stepx
y1 = y2
y2 += stepy
super().__init__(array('f', chain.from_iterable(vertices)))
# TODO: with FOV
def sea_triangles(vsubdivs, distance, projection_ratio):
assert vsubdivs > 0
vertices = []
hsubdivs = round(vsubdivs * projection_ratio)
z = -distance
width = distance * projection_ratio
height = distance
startx = width * -0.5
starty = height * -0.5
stepx = width / hsubdivs
stepy = height / vsubdivs
y1 = starty
y2 = y1 + stepy
for sy in range(vsubdivs):
x1 = startx
x2 = x1 + stepx
for sx in range(hsubdivs):
a = (x1, y2, z)
b = (x2, y1, z)
vertices.append((x1, y1, z))
vertices.append(b)
vertices.append(a)
vertices.append((x2, y2, z))
vertices.append(a)
vertices.append(b)
x1 = x2
x2 += stepx
y1 = y2
y2 += stepy
return Triangles(array('f', chain.from_iterable(vertices)))