- added renderer

- Added undo
2026-07-12 22:21:43 +02:00
parent 210e3cfb5d
commit 9f1387fe68
8 changed files with 3419 additions and 0 deletions
@@ -0,0 +1,156 @@
+"""Material presets for the render backend.
+
+Each preset is a RenderMaterial with physically-plausible values.
+"""
+
+from __future__ import annotations
+
+from typing import Dict, List
+
+from .render_backend import RenderMaterial
+
+# ── Preset library ──────────────────────────────────────────────────────
+# Note: Mitsuba pip installs don't include spectral metal data files,
+# so metal_preset is not used. Instead, metals use material="none" with
+# specular_reflectance set to the metal color.
+
+PRESETS: Dict[str, RenderMaterial] = {
+    # ── Metals ──────────────────────────────────────────────────────
+    "Brushed Steel": RenderMaterial(
+        name="Brushed Steel",
+        color=(0.65, 0.67, 0.72),
+        metallic=0.9,
+        roughness=0.35,
+        bsdf_type="roughconductor",
+    ),
+    "Polished Chrome": RenderMaterial(
+        name="Polished Chrome",
+        color=(0.8, 0.8, 0.8),
+        metallic=1.0,
+        roughness=0.05,
+        bsdf_type="roughconductor",
+    ),
+    "Brushed Aluminum": RenderMaterial(
+        name="Brushed Aluminum",
+        color=(0.75, 0.75, 0.75),
+        metallic=0.85,
+        roughness=0.25,
+        bsdf_type="roughconductor",
+    ),
+    "Copper": RenderMaterial(
+        name="Copper",
+        color=(0.95, 0.64, 0.54),
+        metallic=0.95,
+        roughness=0.15,
+        bsdf_type="roughconductor",
+    ),
+    "Gold": RenderMaterial(
+        name="Gold",
+        color=(1.0, 0.76, 0.33),
+        metallic=1.0,
+        roughness=0.1,
+        bsdf_type="roughconductor",
+    ),
+    "Blackened Steel": RenderMaterial(
+        name="Blackened Steel",
+        color=(0.15, 0.15, 0.17),
+        metallic=0.8,
+        roughness=0.4,
+        bsdf_type="roughconductor",
+    ),
+    # ── Plastics ────────────────────────────────────────────────────
+    "Matte Plastic": RenderMaterial(
+        name="Matte Plastic",
+        color=(0.2, 0.5, 0.8),
+        metallic=0.0,
+        roughness=0.6,
+        bsdf_type="plastic",
+        int_ior=1.5,
+    ),
+    "Glossy Plastic": RenderMaterial(
+        name="Glossy Plastic",
+        color=(0.2, 0.5, 0.8),
+        metallic=0.0,
+        roughness=0.1,
+        bsdf_type="plastic",
+        int_ior=1.5,
+    ),
+    "White Nylon": RenderMaterial(
+        name="White Nylon",
+        color=(0.85, 0.85, 0.83),
+        metallic=0.0,
+        roughness=0.45,
+        bsdf_type="plastic",
+        int_ior=1.53,
+    ),
+    "Black ABS": RenderMaterial(
+        name="Black ABS",
+        color=(0.05, 0.05, 0.05),
+        metallic=0.0,
+        roughness=0.35,
+        bsdf_type="plastic",
+        int_ior=1.54,
+    ),
+    "Red PA12": RenderMaterial(
+        name="Red PA12",
+        color=(0.75, 0.08, 0.08),
+        metallic=0.0,
+        roughness=0.4,
+        bsdf_type="plastic",
+        int_ior=1.53,
+    ),
+    # ── Other ───────────────────────────────────────────────────────
+    "Rubber": RenderMaterial(
+        name="Rubber",
+        color=(0.1, 0.1, 0.1),
+        metallic=0.0,
+        roughness=0.9,
+        bsdf_type="diffuse",
+    ),
+    "Ceramic White": RenderMaterial(
+        name="Ceramic White",
+        color=(0.92, 0.91, 0.88),
+        metallic=0.0,
+        roughness=0.15,
+        bsdf_type="dielectric",
+        int_ior=1.55,
+    ),
+    "Glass": RenderMaterial(
+        name="Glass",
+        color=(0.95, 0.95, 0.95),
+        metallic=0.0,
+        roughness=0.0,
+        bsdf_type="dielectric",
+        int_ior=1.52,
+    ),
+    "Wood": RenderMaterial(
+        name="Wood",
+        color=(0.6, 0.4, 0.2),
+        metallic=0.0,
+        roughness=0.7,
+        bsdf_type="diffuse",
+    ),
+}
+
+
+def get_preset(name: str) -> RenderMaterial:
+    """Get a material preset by name. Falls back to default if not found."""
+    if name in PRESETS:
+        return PRESETS[name]
+    return default_material()
+
+
+def default_material() -> RenderMaterial:
+    """Return the default grey material."""
+    return RenderMaterial(
+        name="Default",
+        color=(0.7, 0.7, 0.7),
+        metallic=0.0,
+        roughness=0.5,
+        bsdf_type="diffuse",
+    )
+
+
+def preset_names() -> List[str]:
+    """Return sorted list of available preset names."""
+    return sorted(PRESETS.keys())