[Bf-extensions-cvs] [c00916b2] master: The addon gets updated for Eevee/Cycles - part 2: we now use a sphere as a 'point' light source. In material properties, the sphere has the node called 'Emission'. Note that the light source as well as a camera can be **optionally** chosen, they are not set by default.
Clemens Barth
noreply at git.blender.org
Sat Jan 15 12:44:24 CET 2022
Commit: c00916b26b08cb5701974ffddadc6aba6c1e00f0
Author: Clemens Barth
Date: Sat Jan 15 12:40:30 2022 +0100
Branches: master
https://developer.blender.org/rBAc00916b26b08cb5701974ffddadc6aba6c1e00f0
The addon gets updated for Eevee/Cycles - part 2: we now use a sphere
as a 'point' light source. In material properties, the sphere has the
node called 'Emission'. Note that the light source as well as a camera
can be **optionally** chosen, they are not set by default.
===================================================================
M io_mesh_atomic/pdb_import.py
M io_mesh_atomic/xyz_import.py
===================================================================
diff --git a/io_mesh_atomic/pdb_import.py b/io_mesh_atomic/pdb_import.py
index 87404a89..28f75b12 100644
--- a/io_mesh_atomic/pdb_import.py
+++ b/io_mesh_atomic/pdb_import.py
@@ -367,6 +367,7 @@ def read_pdb_file_sticks(filepath_pdb, use_sticks_bonds, all_atoms):
split_list = line.split(' ')
# Go to the first entry
+ # DO NOT CHANGE 'CONECT', read below.
if "CONECT" not in split_list[0]:
for line in filepath_pdb_p:
split_list = line.split(' ')
@@ -388,7 +389,7 @@ def read_pdb_file_sticks(filepath_pdb, use_sticks_bonds, all_atoms):
# Note 2019-03-16: in a PDB file the identifier for sticks is called
# 'CONECT' and NOT 'CONNECT'! Please leave this as is, otherwise the
- # sticks are NOT correctly loaded.
+ # sticks are NOT correctly imported.
# The strings of the atom numbers do have a clear position in the file
# (From 7 to 12, from 13 to 18 and so on.) and one needs to consider
@@ -618,30 +619,53 @@ def camera_light_source(use_camera,
# This is the distance from the object measured in terms of %
# of the camera distance. It is set onto 50% (1/2) distance.
- light_dl = sqrt(object_size) * 15 * 0.5
+ lamp_dl = sqrt(object_size) * 15 * 0.5
# This is a factor to which extend the lamp shall go to the right
# (from the camera point of view).
- light_dy_right = light_dl * (3.0/4.0)
+ lamp_dy_right = lamp_dl * (3.0/4.0)
# Create x, y and z for the lamp.
- object_light_vec = Vector((light_dl,light_dy_right,light_dl))
- light_xyz_vec = object_center_vec + object_light_vec
-
- # Create the lamp
- light_data = bpy.data.lights.new(name="A_light", type="SUN")
- light_data.distance = 500.0
- light_data.energy = 3.0
- lamp = bpy.data.objects.new("A_light", light_data)
- lamp.location = light_xyz_vec
- bpy.context.collection.objects.link(lamp)
+ object_lamp_vec = Vector((lamp_dl,lamp_dy_right,lamp_dl))
+ lamp_xyz_vec = object_center_vec + object_lamp_vec
+
+ # As a lamp we use a ball.
+ bpy.ops.mesh.primitive_uv_sphere_add(
+ segments=64,
+ ring_count=64,
+ align='WORLD',
+ enter_editmode=False,
+ location=lamp_xyz_vec,
+ rotation=(0, 0, 0))
+ lamp = bpy.context.view_layer.objects.active
+ # We put an 'A_' just that the lamp appears first in the outliner
+ # tree
+ lamp.name = "A_lamp"
+
+ # We now determine the emission strength of the lamp. Note that the
+ # intensity depends on 1/r^2. For this we use a value of 5000.0 at a
+ # distance of 58 (58x58 = 3364.0). This value was determined only once
+ # in the Blender viewport
+ length = lamp_xyz_vec.length
+ strength = 5000.0 * ( (length * length) / (58.0 * 58.0) )
+
+ # Now, we create the material
+ lamp_material = bpy.data.materials.new(lamp.name)
+ lamp_material.use_nodes = True
+ # Create the emission Node.
+ material_output = lamp_material.node_tree.nodes.get('Material Output')
+ emission = lamp_material.node_tree.nodes.new('ShaderNodeEmission')
+ # Emission and strength values
+ emission.inputs['Strength'].default_value = strength
+ emission.inputs['Color'].default_value = (1.0, 1.0, 1.0, 1.0)
+ # The new material into the tree and link the material of the object
+ # with the new material.
+ lamp_material.node_tree.links.new(material_output.inputs[0], emission.outputs[0])
+ lamp.active_material = lamp_material
# Some settings for the World: a bit ambient occlusion
bpy.context.scene.world.light_settings.use_ambient_occlusion = True
bpy.context.scene.world.light_settings.ao_factor = 0.1
- # Some properties for cycles
- lamp.data.use_nodes = True
- lmp_P_BSDF = lamp.data.node_tree.nodes['Emission']
- lmp_P_BSDF.inputs['Strength'].default_value = 5
+
# Function, which draws the atoms of one type (balls). This is one
diff --git a/io_mesh_atomic/xyz_import.py b/io_mesh_atomic/xyz_import.py
index c54ef8ef..96bf7913 100644
--- a/io_mesh_atomic/xyz_import.py
+++ b/io_mesh_atomic/xyz_import.py
@@ -422,30 +422,52 @@ def camera_light_source(use_camera,
# This is the distance from the object measured in terms of %
# of the camera distance. It is set onto 50% (1/2) distance.
- light_dl = sqrt(object_size) * 15 * 0.5
+ lamp_dl = sqrt(object_size) * 15 * 0.5
# This is a factor to which extend the lamp shall go to the right
# (from the camera point of view).
- light_dy_right = light_dl * (3.0/4.0)
+ lamp_dy_right = lamp_dl * (3.0/4.0)
# Create x, y and z for the lamp.
- object_light_vec = Vector((light_dl,light_dy_right,light_dl))
- light_xyz_vec = object_center_vec + object_light_vec
-
- # Create the lamp
- light_data = bpy.data.lights.new(name="A_light", type="SUN")
- light_data.distance = 500.0
- light_data.energy = 3.0
- lamp = bpy.data.objects.new("A_light", light_data)
- lamp.location = light_xyz_vec
- bpy.context.collection.objects.link(lamp)
+ object_lamp_vec = Vector((lamp_dl,lamp_dy_right,lamp_dl))
+ lamp_xyz_vec = object_center_vec + object_lamp_vec
+
+ # As a lamp we use a ball.
+ bpy.ops.mesh.primitive_uv_sphere_add(
+ segments=64,
+ ring_count=64,
+ align='WORLD',
+ enter_editmode=False,
+ location=lamp_xyz_vec,
+ rotation=(0, 0, 0))
+ lamp = bpy.context.view_layer.objects.active
+ # We put an 'A_' just that the lamp appears first in the outliner
+ # tree
+ lamp.name = "A_lamp"
+
+ # We now determine the emission strength of the lamp. Note that the
+ # intensity depends on 1/r^2. For this we use a value of 5000.0 at a
+ # distance of 58 (58x58 = 3364.0). This value was determined only once
+ # in the Blender viewport
+ length = lamp_xyz_vec.length
+ strength = 5000.0 * ( (length * length) / (58.0 * 58.0) )
+
+ # Now, we create the material
+ lamp_material = bpy.data.materials.new(lamp.name)
+ lamp_material.use_nodes = True
+ # Create the emission Node.
+ material_output = lamp_material.node_tree.nodes.get('Material Output')
+ emission = lamp_material.node_tree.nodes.new('ShaderNodeEmission')
+ # Emission and strength values
+ emission.inputs['Strength'].default_value = strength
+ emission.inputs['Color'].default_value = (1.0, 1.0, 1.0, 1.0)
+ # The new material into the tree and link the material of the object
+ # with the new material.
+ lamp_material.node_tree.links.new(material_output.inputs[0], emission.outputs[0])
+ lamp.active_material = lamp_material
# Some settings for the World: a bit ambient occlusion
bpy.context.scene.world.light_settings.use_ambient_occlusion = True
- bpy.context.scene.world.light_settings.ao_factor = 0.2
- # Some properties for cycles
- lamp.data.use_nodes = True
- lmp_P_BSDF = lamp.data.node_tree.nodes['Emission']
- lmp_P_BSDF.inputs['Strength'].default_value = 5
+ bpy.context.scene.world.light_settings.ao_factor = 0.1
# -----------------------------------------------------------------------------
# The main routine
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