feat(cloth): add state buffers

Author: miinso

modules/BUILD

@@ -14,6 +14,7 @@ cc_library(
     }),
     hdrs = [
         "graphics/types.h",
+        "graphics/real.h",
         "graphics/camera.h",
         "graphics/components.h",
         "graphics/fonts.h",

modules/graphics/real.h

@@ -0,0 +1,16 @@
+#pragma once
+
+#include <Eigen/Dense>
+
+// matches graphics::scalar_real
+using Real = float;
+
+namespace Eigen {
+using Vector3r = Matrix<Real, 3, 1, DontAlign>;
+using Vector4r = Matrix<Real, 4, 1, DontAlign>;
+using Matrix2r = Matrix<Real, 2, 2>;
+using Matrix3r = Matrix<Real, 3, 3>;
+using VectorXr = Matrix<Real, Dynamic, 1>;
+using ArrayXr = Array<Real, Dynamic, 1>;
+using MatrixXr = Matrix<Real, Dynamic, Dynamic>;
+} // namespace Eigen

small/cloth/BUILD

@@ -23,8 +23,11 @@ cc_library(
         "components/render.h",
         "components/solver.h",
         "physics.h",
+        "physics/bridge.h",
         "physics/integration.h",
+        "physics/model.h",
         "physics/spring.h",
+        "physics/state.h",
         "queries.h",
         "vars.h",
         "systems.h",
@@ -71,7 +74,6 @@ cc_library(
 cc_binary(
     name = "bench",
     srcs = [
-        "bench/bench.h",
         "bench/bench.cpp",
     ],
     data = [

small/cloth/assets/all.flecs

@@ -8,7 +8,6 @@ p1 {
   Position: { 1, 0, 0 }
   Velocity: { x: 0, y: 0, z: 0 }
   Mass: { 1.0 }
-  ParticleIndex: { 0 }
   Particle
   ParticleState: { Selected }
   IsPinned
@@ -18,7 +17,6 @@ p2 {
   Position: { x: 1, y: 0, z: 0 }
   Velocity: { x: 0, y: 0, z: 0 }
   Mass: { 1.0 }
-  ParticleIndex: { 1 }
   Particle
 }
 
@@ -54,7 +52,6 @@ for y in 0..$height {
       Position: { x: $start_x + $x * $spacing, y: $start_y, z: $start_z - $y * $spacing }
       Velocity: { x: 0, y: 0, z: 0 }
       Mass: { $mass }
-      ParticleIndex: { $particle_offset + $y * $width + $x }
       Particle
     }
   }

small/cloth/assets/cloth.flecs

@@ -26,7 +26,6 @@ for y in 0..$height {
       Position: { x: $start_x + $x * $spacing, y: $start_y, z: $start_z - $y * $spacing }
       Velocity: { x: 0, y: 0, z: 0 }
       Mass: { $mass }
-      ParticleIndex: { $y * $width + $x }
       Particle
     }
   }

small/cloth/assets/default.flecs

@@ -20,7 +20,6 @@ for y in 0..$height {
       Position: { x: $start_x + $x * $spacing, y: $start_y, z: $start_z - $y * $spacing }
       Velocity: { x: 0, y: 0, z: 0 }
       Mass: { $mass }
-      ParticleIndex: { $y * $width + $x }
       Particle
     }
   }

small/cloth/assets/hammock.flecs

@@ -25,7 +25,6 @@ for y in 0..$height {
       Position: { x: $start_x + $x * $spacing, y: $start_y, z: $start_z - $y * $spacing }
       Velocity: { x: 0, y: 0, z: 0 }
       Mass: { $mass }
-      ParticleIndex: { $y * $width + $x }
       Particle
     }
   }

small/cloth/assets/intro.flecs

@@ -25,7 +25,6 @@ for y in 0..$height {
       Position: { x: $start_x + $x * $spacing, y: $start_y, z: $start_z - $y * $spacing }
       Velocity: { x: 0, y: 0, z: 0 }
       Mass: { $mass }
-      ParticleIndex: { $y * $width + $x }
       Particle
     }
   }

small/cloth/assets/spring.flecs

@@ -4,7 +4,6 @@ p1 {
   Position: { x: 0, y: 0, z: 0 }
   Velocity: { x: 0, y: 0, z: 0 }
   Mass: { 1.0 }
-  ParticleIndex: { 0 }
   Particle
   IsPinned
 }
@@ -13,7 +12,6 @@ p2 {
   Position: { x: 1, y: 0, z: 0 }
   Velocity: { x: 0, y: 0, z: 0 }
   Mass: { 1.0 }
-  ParticleIndex: { 1 }
   Particle
 }
 

small/cloth/assets/spring2.flecs

@@ -17,7 +17,6 @@ p_0 {
   Position: { x: 0, y: $start_y, z: 0 }
   Velocity: { x: 0, y: 0, z: 0 }
   Mass: { $mass }
-  ParticleIndex: { 0 }
   Particle
   IsPinned
 }
@@ -27,7 +26,6 @@ for i in 1..$count {
     Position: { x: $i * $spacing, y: $start_y, z: 0 }
     Velocity: { x: 0, y: 0, z: 0 }
     Mass: { $mass }
-    ParticleIndex: { $i }
     Particle
   }
 }