Mesh Terrain Cutter.py

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(Page créée avec « <python> import bpy ### # # INPUT PARAMETERS # ### POINTS_PER_REGION = 256 N_REGIONS_X = 4 N_REGIONS_Y = 8 MAX_HEIGHT = 48 HEIGHTMAP_PATH = 'C:/Users/crista/tmp/uppsala_2_te… »)
 
Ligne 1 : Ligne 1 :
 +
v1 for Blender 2.65 and <
<python>
<python>
import bpy
import bpy
Ligne 129 : Ligne 130 :
apply_modifiers()
apply_modifiers()
split()
split()
 +
</python>
 +
 +
v2 for Blender 2.66 and >
 +
<python>
 +
import bpy
 +
import mathutils
 +
 +
###
 +
#
 +
# INPUT PARAMETERS
 +
#
 +
###
 +
POINTS_PER_REGION = 256
 +
N_REGIONS_X = 10
 +
N_REGIONS_Y = 10
 +
MAX_HEIGHT = 152.4
 +
HEIGHTMAP_PATH = 'E:/Encitra/SanJose_Oakridge-Collada/SanJose_Oakridge-Cropped3-Terrain_Heightmap3.bmp'
 +
#TEXTURE_PATH = 'D:/encitra terrain/test3/uppsala_{0}_{1}.tga'
 +
COLLADA_PATH = 'E:/Encitra/SanJose_Oakridge-Collada/test1/sanjose_{0}_{1}.dae'
 +
NAME = 'sanjose'
 +
 +
###
 +
#
 +
# MAIN ACTIONS
 +
#
 +
###
 +
 +
# delete all objects from the scene
 +
def reset_scene():
 +
    print('Reseting scene...')
 +
    bpy.ops.object.select_all(action='DESELECT')
 +
    for o in bpy.data.objects:
 +
        # leave the camera and the lamp
 +
        if o.name != 'Lamp' and o.name != 'Camera':
 +
            o.select= True
 +
    # delete them
 +
    bpy.ops.object.delete()
 +
    # delete the meshes
 +
    for item in bpy.data.meshes:
 +
      bpy.data.meshes.remove(item)
 +
 +
def create_unit_plane():
 +
    print('Creating unit plane...')
 +
    # Define the coordinates of the vertices. Each vertex is defined by 3 consecutive floats.
 +
    vertices=[(-1.0, -1.0, 0), (1.0, -1.0, 0), (1.0, 1.0 , 0), (-1.0, 1.0, 0)]
 +
 +
    # Define the faces by index numbers. Each faces is defined by 4 consecutive integers.
 +
    # For triangles you need to repeat the first vertex also in the fourth position.
 +
    faces=[ (0,1,2,3)]
 +
 +
    me = bpy.data.meshes.new("PlaneMesh")  # create a new mesh 
 +
 +
    ob = bpy.data.objects.new("Plane", me)          # create an object with that mesh
 +
    ob.location = (0, 0, 0) #bpy.context.scene.cursor_location  # position object at 3d-cursor
 +
    bpy.context.scene.objects.link(ob)                # Link object to scene
 +
 +
    # Fill the mesh with verts, edges, faces
 +
    me.from_pydata(vertices,[],faces)  # edges or faces should be [], or you ask for problems
 +
    me.update(calc_edges=True)    # Update mesh with new data
 +
 +
def subdivide():
 +
    print('Subdividing...')
 +
    bpy.data.objects['Plane'].select = True
 +
    bpy.context.scene.objects.active = bpy.data.objects['Plane']
 +
    bpy.ops.object.mode_set(mode='EDIT', toggle=False)
 +
    bpy.ops.mesh.subdivide(number_cuts=256)
 +
    bpy.ops.object.mode_set(mode='OBJECT', toggle=False)
 +
 +
def add_array_modifiers():
 +
    print('Adding array modifiers...')
 +
    bpy.ops.object.modifier_add(type='ARRAY')
 +
    bpy.context.object.modifiers['Array'].name = 'ARRAY_X'
 +
    bpy.context.object.modifiers['ARRAY_X'].relative_offset_displace = [1, 0, 0]
 +
    bpy.context.object.modifiers['ARRAY_X'].count=10
 +
 +
    bpy.ops.object.modifier_add(type='ARRAY')
 +
    bpy.context.object.modifiers['Array'].name = 'ARRAY_Y'
 +
    bpy.context.object.modifiers['ARRAY_Y'].relative_offset_displace = [0, 1, 0]
 +
    bpy.context.object.modifiers['ARRAY_Y'].count=10
 +
   
 +
def load_heightmap():
 +
    print('Loading heightmap...')
 +
    try:
 +
        heightmap = bpy.data.images.load(HEIGHTMAP_PATH)
 +
    except:
 +
        raise NameError("Cannot load image %s" % HEIGHTMAP_PATH)
 +
    cTex = bpy.data.textures.new('Heightmap', type = 'IMAGE')
 +
    cTex.image = heightmap
 +
    cTex.extension = 'EXTEND'
 +
    cTex.crop_max_x = 1/N_REGIONS_X
 +
    cTex.crop_max_y = 1/N_REGIONS_Y
 +
 +
def add_displace_modifier():
 +
    print('Adding displace modifier...')
 +
    bpy.ops.object.modifier_add(type='DISPLACE')
 +
    bpy.context.object.modifiers['Displace'].name = 'DISPLACEMENT'
 +
    bpy.context.object.modifiers['DISPLACEMENT'].texture = bpy.data.textures['Heightmap']
 +
    bpy.context.object.modifiers['DISPLACEMENT'].strength = MAX_HEIGHT/POINTS_PER_REGION
 +
    bpy.ops.object.shade_smooth()
 +
    bpy.data.objects['Plane'].location = (0, 0, 0)
 +
 +
def apply_modifiers():
 +
    print('Applying all modifiers')
 +
    bpy.ops.object.modifier_apply(modifier='ARRAY_X')
 +
    bpy.ops.object.modifier_apply(modifier='ARRAY_Y')
 +
    bpy.ops.object.modifier_apply(modifier='DISPLACEMENT')
 +
 +
def split():
 +
    print('Spliting the mesh into individual regions...')
 +
    bpy.ops.object.mode_set(mode='EDIT', toggle=False)
 +
    bpy.ops.mesh.separate(type='LOOSE')
 +
    bpy.ops.object.mode_set(mode='OBJECT', toggle=False)
 +
    # Give the right name to the last one
 +
    bpy.data.objects['Plane'].name = 'Plane.%03d' % (N_REGIONS_X*N_REGIONS_Y)
 +
    bpy.data.meshes['PlaneMesh'].name = 'PlaneMesh.%03d' % (N_REGIONS_X*N_REGIONS_Y)
 +
    # Set the origin for all objects
 +
    bpy.ops.object.select_all(action='DESELECT')
 +
    for o in bpy.data.objects:
 +
        if o.name.startswith('Plane'):
 +
            o.select = True
 +
            bpy.context.scene.objects.active = o
 +
            bpy.ops.object.origin_set(type='ORIGIN_GEOMETRY')
 +
            bpy.context.scene.cursor_location = o.location
 +
            bpy.context.scene.cursor_location[2] = -(MAX_HEIGHT/256) # -(MAX_HEIGHT/256)
 +
            bpy.ops.object.origin_set(type='ORIGIN_CURSOR')
 +
            o.select = False
 +
    # Change the names of the objects and meshes
 +
    for i in range(N_REGIONS_X*N_REGIONS_Y):
 +
        y = int(i / N_REGIONS_X)
 +
        x = i % N_REGIONS_X
 +
        name = 'Plane.%03d' % (i+1)
 +
        bpy.data.objects[name].name = NAME + '_' + str(x) + '_' + str(y)
 +
        name = 'PlaneMesh.%03d' % (i+1)
 +
        bpy.data.meshes[name].name = NAME + 'Mesh_' + str(x) + '_' + str(y)
 +
 +
def uvmap_and_export():
 +
    for x in range(N_REGIONS_X):
 +
        for y in range(N_REGIONS_Y):
 +
            ## load the image from the file
 +
            #img_name = TEXTURE_PATH.format(x, y)
 +
            #img = bpy.data.images.load(img_name)
 +
            ## create a new texture
 +
            #tex = bpy.data.textures.new(img_name, type='IMAGE')
 +
            #tex.image = img
 +
 +
            # select the object and create the UV Map that allows it to be textured
 +
            name = NAME + '_' + str(x) + '_' + str(y)
 +
            bpy.data.objects[name].select = True
 +
            bpy.context.scene.objects.active = bpy.data.objects[name]
 +
            bpy.ops.object.mode_set(mode='EDIT')
 +
            bpy.ops.mesh.select_all(action='SELECT')
 +
            bpy.ops.uv.cube_project(clip_to_bounds=True)
 +
            bpy.ops.object.mode_set(mode='OBJECT')
 +
 +
            # create the material
 +
            mat = bpy.data.materials.new('aerial_{0}_{1}'.format(x, y))
 +
            mat.diffuse_intensity = 1
 +
            mat.diffuse_color = mathutils.Vector((1, 1, 1))
 +
            mat_entry = mat.texture_slots.add()
 +
            mat_entry.texture = bpy.data.textures['Tex']
 +
            mat_entry.texture_coords = 'UV'
 +
 +
            # link the material to the object
 +
            bpy.context.object.data.materials.append(mat)
 +
 +
            # export
 +
            filename = COLLADA_PATH.format(x, y)
 +
            bpy.ops.wm.collada_export(filepath=filename, selected=True, include_uv_textures=True, include_material_textures=True)
 +
 +
            bpy.data.objects[name].select = False
 +
 +
reset_scene()
 +
create_unit_plane()
 +
subdivide()
 +
add_array_modifiers()
 +
load_heightmap()
 +
add_displace_modifier()
 +
apply_modifiers()
 +
split()
 +
uvmap_and_export()
</python>
</python>

Version actuelle en date du 30 mai 2014 à 14:58

v1 for Blender 2.65 and < 

import bpy
 
###
#
# INPUT PARAMETERS
#
###
POINTS_PER_REGION = 256
N_REGIONS_X = 4
N_REGIONS_Y = 8
MAX_HEIGHT = 48
HEIGHTMAP_PATH = 'C:/Users/crista/tmp/uppsala_2_terrain_geometry_master.bmp'
NAME = 'uppsala'
 
###
#
# MAIN ACTIONS
#
###
 
# delete all objects from the scene
def reset_scene():
    print('Reseting scene...')
    bpy.ops.object.select_all(action='DESELECT')
    for o in bpy.data.objects:
        # leave the camera and the lamp
        if o.name != 'Lamp' and o.name != 'Camera':
            o.select= True
    # delete them
    bpy.ops.object.delete()
    # delete the meshes
    for item in bpy.data.meshes:
      bpy.data.meshes.remove(item)
 
def create_unit_plane():
    print('Creating unit plane...')
    # Define the coordinates of the vertices. Each vertex is defined by 3 consecutive floats.
    vertices=[(-1.0, -1.0, 0), (1.0, -1.0, 0), (1.0, 1.0 , 0), (-1.0, 1.0, 0)]
 
    # Define the faces by index numbers. Each faces is defined by 4 consecutive integers.
    # For triangles you need to repeat the first vertex also in the fourth position.
    faces=[ (0,1,2,3)]
 
    me = bpy.data.meshes.new("PlaneMesh")   # create a new mesh  
 
    ob = bpy.data.objects.new("Plane", me)          # create an object with that mesh
    ob.location = (0, 0, 0) #bpy.context.scene.cursor_location   # position object at 3d-cursor
    bpy.context.scene.objects.link(ob)                # Link object to scene
 
    # Fill the mesh with verts, edges, faces 
    me.from_pydata(vertices,[],faces)   # edges or faces should be [], or you ask for problems
    me.update(calc_edges=True)    # Update mesh with new data
 
def subdivide():
    print('Subdividing...')
    bpy.data.objects['Plane'].select = True
    bpy.context.scene.objects.active = bpy.data.objects['Plane']
    bpy.ops.object.mode_set(mode='EDIT', toggle=False)
    bpy.ops.mesh.subdivide(number_cuts=256)
    bpy.ops.object.mode_set(mode='OBJECT', toggle=False)
 
def add_array_modifiers():
    print('Adding array modifiers...')
    bpy.ops.object.modifier_add(type='ARRAY')
    bpy.context.object.modifiers['Array'].name = 'ARRAY_X'
    bpy.context.object.modifiers['ARRAY_X'].relative_offset_displace = [1, 0, 0]
    bpy.context.object.modifiers['ARRAY_X'].count=4
 
    bpy.ops.object.modifier_add(type='ARRAY')
    bpy.context.object.modifiers['Array'].name = 'ARRAY_Y'
    bpy.context.object.modifiers['ARRAY_Y'].relative_offset_displace = [0, 1, 0]
    bpy.context.object.modifiers['ARRAY_Y'].count=8
 
def load_heightmap():
    print('Loading heightmap...')
    try:
        heightmap = bpy.data.images.load(HEIGHTMAP_PATH)
    except:
        raise NameError("Cannot load image %s" % HEIGHTMAP_PATH)
    cTex = bpy.data.textures.new('Heightmap', type = 'IMAGE')
    cTex.image = heightmap
    cTex.extension = 'EXTEND'
    cTex.crop_max_x = 1/N_REGIONS_X
    cTex.crop_max_y = 1/N_REGIONS_Y
 
def add_displace_modifier():
    print('Adding displace modifier...')
    bpy.ops.object.modifier_add(type='DISPLACE')
    bpy.context.object.modifiers['Displace'].name = 'DISPLACEMENT'
    bpy.context.object.modifiers['DISPLACEMENT'].texture = bpy.data.textures['Heightmap']
    bpy.context.object.modifiers['DISPLACEMENT'].strength = MAX_HEIGHT/POINTS_PER_REGION
    bpy.ops.object.shade_smooth()
    bpy.data.objects['Plane'].location = (0, 0, 0)
 
def apply_modifiers():
    print('Applying all modifiers')
    bpy.ops.object.modifier_apply(modifier='ARRAY_X')
    bpy.ops.object.modifier_apply(modifier='ARRAY_Y')
    bpy.ops.object.modifier_apply(modifier='DISPLACEMENT')
 
def split():
    print('Spliting the mesh into individual regions...')
    bpy.ops.object.mode_set(mode='EDIT', toggle=False)
    bpy.ops.mesh.separate(type='LOOSE')
    bpy.ops.object.mode_set(mode='OBJECT', toggle=False)
    # Give the right name to the last one
    bpy.data.objects['Plane'].name = 'Plane.%03d' % (N_REGIONS_X*N_REGIONS_Y)
    bpy.data.meshes['PlaneMesh'].name = 'PlaneMesh.%03d' % (N_REGIONS_X*N_REGIONS_Y)
    # Set the origin for all objects and rename them
    bpy.ops.object.select_all(action='DESELECT')
    for o in bpy.data.objects:
        if o.name.startswith('Plane'):
            o.select = True
            bpy.context.scene.objects.active = o
            bpy.ops.object.origin_set(type='ORIGIN_GEOMETRY')
            bpy.context.scene.cursor_location = o.location
            bpy.context.scene.cursor_location[2] = -0.5 # z = -0.5
            bpy.ops.object.origin_set(type='ORIGIN_CURSOR')
            o.name = o.name.replace('Plane', NAME)
            o.select = False
 
reset_scene()
create_unit_plane()
subdivide()
add_array_modifiers()
load_heightmap()
add_displace_modifier()
apply_modifiers()
split()

v2 for Blender 2.66 and > 

import bpy
import mathutils
 
###
#
# INPUT PARAMETERS
#
###
POINTS_PER_REGION = 256
N_REGIONS_X = 10
N_REGIONS_Y = 10
MAX_HEIGHT = 152.4
HEIGHTMAP_PATH = 'E:/Encitra/SanJose_Oakridge-Collada/SanJose_Oakridge-Cropped3-Terrain_Heightmap3.bmp'
#TEXTURE_PATH = 'D:/encitra terrain/test3/uppsala_{0}_{1}.tga'
COLLADA_PATH = 'E:/Encitra/SanJose_Oakridge-Collada/test1/sanjose_{0}_{1}.dae'
NAME = 'sanjose'
 
###
#
# MAIN ACTIONS
#
###
 
# delete all objects from the scene
def reset_scene():
    print('Reseting scene...')
    bpy.ops.object.select_all(action='DESELECT')
    for o in bpy.data.objects:
        # leave the camera and the lamp
        if o.name != 'Lamp' and o.name != 'Camera':
            o.select= True
    # delete them
    bpy.ops.object.delete()
    # delete the meshes
    for item in bpy.data.meshes:
      bpy.data.meshes.remove(item)
 
def create_unit_plane():
    print('Creating unit plane...')
    # Define the coordinates of the vertices. Each vertex is defined by 3 consecutive floats.
    vertices=[(-1.0, -1.0, 0), (1.0, -1.0, 0), (1.0, 1.0 , 0), (-1.0, 1.0, 0)]
 
    # Define the faces by index numbers. Each faces is defined by 4 consecutive integers.
    # For triangles you need to repeat the first vertex also in the fourth position.
    faces=[ (0,1,2,3)]
 
    me = bpy.data.meshes.new("PlaneMesh")   # create a new mesh  
 
    ob = bpy.data.objects.new("Plane", me)          # create an object with that mesh
    ob.location = (0, 0, 0) #bpy.context.scene.cursor_location   # position object at 3d-cursor
    bpy.context.scene.objects.link(ob)                # Link object to scene
 
    # Fill the mesh with verts, edges, faces 
    me.from_pydata(vertices,[],faces)   # edges or faces should be [], or you ask for problems
    me.update(calc_edges=True)    # Update mesh with new data
 
def subdivide():
    print('Subdividing...')
    bpy.data.objects['Plane'].select = True
    bpy.context.scene.objects.active = bpy.data.objects['Plane']
    bpy.ops.object.mode_set(mode='EDIT', toggle=False)
    bpy.ops.mesh.subdivide(number_cuts=256)
    bpy.ops.object.mode_set(mode='OBJECT', toggle=False)
 
def add_array_modifiers():
    print('Adding array modifiers...')
    bpy.ops.object.modifier_add(type='ARRAY')
    bpy.context.object.modifiers['Array'].name = 'ARRAY_X'
    bpy.context.object.modifiers['ARRAY_X'].relative_offset_displace = [1, 0, 0]
    bpy.context.object.modifiers['ARRAY_X'].count=10
 
    bpy.ops.object.modifier_add(type='ARRAY')
    bpy.context.object.modifiers['Array'].name = 'ARRAY_Y'
    bpy.context.object.modifiers['ARRAY_Y'].relative_offset_displace = [0, 1, 0]
    bpy.context.object.modifiers['ARRAY_Y'].count=10
 
def load_heightmap():
    print('Loading heightmap...')
    try:
        heightmap = bpy.data.images.load(HEIGHTMAP_PATH)
    except:
        raise NameError("Cannot load image %s" % HEIGHTMAP_PATH)
    cTex = bpy.data.textures.new('Heightmap', type = 'IMAGE')
    cTex.image = heightmap
    cTex.extension = 'EXTEND'
    cTex.crop_max_x = 1/N_REGIONS_X
    cTex.crop_max_y = 1/N_REGIONS_Y
 
def add_displace_modifier():
    print('Adding displace modifier...')
    bpy.ops.object.modifier_add(type='DISPLACE')
    bpy.context.object.modifiers['Displace'].name = 'DISPLACEMENT'
    bpy.context.object.modifiers['DISPLACEMENT'].texture = bpy.data.textures['Heightmap']
    bpy.context.object.modifiers['DISPLACEMENT'].strength = MAX_HEIGHT/POINTS_PER_REGION
    bpy.ops.object.shade_smooth()
    bpy.data.objects['Plane'].location = (0, 0, 0)
 
def apply_modifiers():
    print('Applying all modifiers')
    bpy.ops.object.modifier_apply(modifier='ARRAY_X')
    bpy.ops.object.modifier_apply(modifier='ARRAY_Y')
    bpy.ops.object.modifier_apply(modifier='DISPLACEMENT')
 
def split():
    print('Spliting the mesh into individual regions...')
    bpy.ops.object.mode_set(mode='EDIT', toggle=False)
    bpy.ops.mesh.separate(type='LOOSE')
    bpy.ops.object.mode_set(mode='OBJECT', toggle=False)
    # Give the right name to the last one
    bpy.data.objects['Plane'].name = 'Plane.%03d' % (N_REGIONS_X*N_REGIONS_Y)
    bpy.data.meshes['PlaneMesh'].name = 'PlaneMesh.%03d' % (N_REGIONS_X*N_REGIONS_Y)
    # Set the origin for all objects
    bpy.ops.object.select_all(action='DESELECT')
    for o in bpy.data.objects:
        if o.name.startswith('Plane'):
            o.select = True
            bpy.context.scene.objects.active = o
            bpy.ops.object.origin_set(type='ORIGIN_GEOMETRY')
            bpy.context.scene.cursor_location = o.location
            bpy.context.scene.cursor_location[2] = -(MAX_HEIGHT/256) # -(MAX_HEIGHT/256)
            bpy.ops.object.origin_set(type='ORIGIN_CURSOR')
            o.select = False
    # Change the names of the objects and meshes
    for i in range(N_REGIONS_X*N_REGIONS_Y):
        y = int(i / N_REGIONS_X)
        x = i % N_REGIONS_X
        name = 'Plane.%03d' % (i+1)
        bpy.data.objects[name].name = NAME + '_' + str(x) + '_' + str(y)
        name = 'PlaneMesh.%03d' % (i+1)
        bpy.data.meshes[name].name = NAME + 'Mesh_' + str(x) + '_' + str(y)
 
def uvmap_and_export():
    for x in range(N_REGIONS_X):
        for y in range(N_REGIONS_Y):
            ## load the image from the file
            #img_name = TEXTURE_PATH.format(x, y)
            #img = bpy.data.images.load(img_name)
            ## create a new texture
            #tex = bpy.data.textures.new(img_name, type='IMAGE')
            #tex.image = img
 
            # select the object and create the UV Map that allows it to be textured
            name = NAME + '_' + str(x) + '_' + str(y)
            bpy.data.objects[name].select = True
            bpy.context.scene.objects.active = bpy.data.objects[name]
            bpy.ops.object.mode_set(mode='EDIT')
            bpy.ops.mesh.select_all(action='SELECT')
            bpy.ops.uv.cube_project(clip_to_bounds=True)
            bpy.ops.object.mode_set(mode='OBJECT')
 
            # create the material
            mat = bpy.data.materials.new('aerial_{0}_{1}'.format(x, y))
            mat.diffuse_intensity = 1
            mat.diffuse_color = mathutils.Vector((1, 1, 1))
            mat_entry = mat.texture_slots.add()
            mat_entry.texture = bpy.data.textures['Tex']
            mat_entry.texture_coords = 'UV'
 
            # link the material to the object
            bpy.context.object.data.materials.append(mat)
 
            # export
            filename = COLLADA_PATH.format(x, y)
            bpy.ops.wm.collada_export(filepath=filename, selected=True, include_uv_textures=True, include_material_textures=True)
 
            bpy.data.objects[name].select = False
 
reset_scene()
create_unit_plane()
subdivide()
add_array_modifiers()
load_heightmap()
add_displace_modifier()
apply_modifiers()
split()
uvmap_and_export()
Récupérée de « http://digigrids.free.fr/wiki/index.php?title=Mesh_Terrain_Cutter.py »
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