Merge branch 'feature/blending' into develop

Author: giuvecchio

examples/data/rocks/basecolor.png

@@ -0,0 +1,35 @@
+import torch
+from torchvision.transforms.functional import to_pil_image
+
+from pypbr import CookTorranceBRDF
+from pypbr.io import load_material_from_folder
+import pypbr.blending as B
+import pypbr.blending.functional as BF
+
+# Load material
+material1 = load_material_from_folder("./data/tiles", preferred_workflow="metallic")
+material2 = load_material_from_folder("./data/rocks", preferred_workflow="metallic")
+
+# Blend the materials
+blender = B.HeightBlend(blend_width=0.1, shift=-0.5)
+
+material, mask = blender(material1, material2)
+
+H, W = 512, 512
+material.resize((H, W)).tile(2)
+
+# Create an instance of the BRDF with the material
+brdf = CookTorranceBRDF(light_type="point")
+
+# Define the view direction, light direction, and light intensity
+view_dir = torch.tensor([0.0, 0.0, 1.0])  # Viewing straight on
+light_dir = torch.tensor([0.1, 0.1, 1.0])  # Light coming from slightly top right
+light_intensity = torch.tensor([1.0, 1.0, 1.0])  # White light
+light_size = 1.0
+
+# Evaluate the BRDF to get the reflected color
+reflected_color = brdf(material, view_dir, light_dir, light_intensity, light_size)
+
+# Convert to PIL Image and display
+image = to_pil_image(reflected_color)
+image.show()

examples/data/rocks/diffuse.png

@@ -5,6 +5,7 @@
 It includes both functional APIs and transformation classes that can be composed.
 
 Modules:
+    blending: Classes for blending materials using various methodologies.
     io: Input/output functions for saving and loading materials.
     material: Classes representing PBR materials.
     models: Classes representing BRDF models.
@@ -24,12 +25,15 @@
     srgb_to_linear,
 """
 
-from . import io, utils
+from . import blending, io, utils
 from ._version import version as __version__
 from .material import BasecolorMetallicMaterial, DiffuseSpecularMaterial, MaterialBase
 from .models import BRDFModel, CookTorranceBRDF
 
 __all__ = [
+    "blending",
+    "io",
+    "utils",
     "MaterialBase",
     "BasecolorMetallicMaterial",
     "DiffuseSpecularMaterial",