From 4ce701150a3f932aca210e3ff372ffcdb2a23e83 Mon Sep 17 00:00:00 2001
From: Adeeb Shihadeh <adeebshihadeh@gmail.com>
Date: Fri, 6 Feb 2026 16:06:16 -0800
Subject: [PATCH] rm common/mat.h

---
 common/mat.h | 85 ----------------------------------------------------
 1 file changed, 85 deletions(-)
 delete mode 100644 common/mat.h

diff --git a/common/mat.h b/common/mat.h
deleted file mode 100644
index 8e10d61971..0000000000
--- a/common/mat.h
+++ /dev/null
@@ -1,85 +0,0 @@
-#pragma once
-
-typedef struct vec3 {
-  float v[3];
-} vec3;
-
-typedef struct vec4 {
-  float v[4];
-} vec4;
-
-typedef struct mat3 {
-  float v[3*3];
-} mat3;
-
-typedef struct mat4 {
-  float v[4*4];
-} mat4;
-
-static inline mat3 matmul3(const mat3 &a, const mat3 &b) {
-  mat3 ret = {{0.0}};
-  for (int r=0; r<3; r++) {
-    for (int c=0; c<3; c++) {
-      float v = 0.0;
-      for (int k=0; k<3; k++) {
-        v += a.v[r*3+k] * b.v[k*3+c];
-      }
-      ret.v[r*3+c] = v;
-    }
-  }
-  return ret;
-}
-
-static inline vec3 matvecmul3(const mat3 &a, const vec3 &b) {
-  vec3 ret = {{0.0}};
-  for (int r=0; r<3; r++) {
-    for (int c=0; c<3; c++) {
-      ret.v[r] += a.v[r*3+c] * b.v[c];
-    }
-  }
-  return ret;
-}
-
-static inline mat4 matmul(const mat4 &a, const mat4 &b) {
-  mat4 ret = {{0.0}};
-  for (int r=0; r<4; r++) {
-    for (int c=0; c<4; c++) {
-      float v = 0.0;
-      for (int k=0; k<4; k++) {
-        v += a.v[r*4+k] * b.v[k*4+c];
-      }
-      ret.v[r*4+c] = v;
-    }
-  }
-  return ret;
-}
-
-static inline vec4 matvecmul(const mat4 &a, const vec4 &b) {
-  vec4 ret = {{0.0}};
-  for (int r=0; r<4; r++) {
-    for (int c=0; c<4; c++) {
-      ret.v[r] += a.v[r*4+c] * b.v[c];
-    }
-  }
-  return ret;
-}
-
-// scales the input and output space of a transformation matrix
-// that assumes pixel-center origin.
-static inline mat3 transform_scale_buffer(const mat3 &in, float s) {
-  // in_pt = ( transform(out_pt/s + 0.5) - 0.5) * s
-
-  mat3 transform_out = {{
-    1.0f/s, 0.0f, 0.5f,
-    0.0f, 1.0f/s, 0.5f,
-    0.0f, 0.0f, 1.0f,
-  }};
-
-  mat3 transform_in = {{
-    s,  0.0f, -0.5f*s,
-    0.0f, s, -0.5f*s,
-    0.0f, 0.0f, 1.0f,
-  }};
-
-  return matmul3(transform_in, matmul3(in, transform_out));
-}