From ed2a4bc4400c38ecd11baccac5db328b797b5d68 Mon Sep 17 00:00:00 2001
From: pk33 <pk33@pk33.space>
Date: Thu, 14 Nov 2024 15:06:07 +0100
Subject: begin 3D rendering, basic camera controls

---
 include/math33.h | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 include/math33.h

(limited to 'include/math33.h')

diff --git a/include/math33.h b/include/math33.h
new file mode 100644
index 0000000..503421b
--- /dev/null
+++ b/include/math33.h
@@ -0,0 +1,56 @@
+#ifndef __MATH33_H__
+#define __MATH33_H__
+
+
+#include "types33.h"
+
+
+typedef f64 Vec2[2];
+typedef f64 Vec3[3];
+typedef f64 Vec4[4];
+typedef f64 Mat4[16];
+
+
+#define V4PRINT( x, y, v ) {\
+  QPRINTF( x, y, "[%.2lf, %.2lf, %.2lf, %.2lf]", v[0], v[1], v[2], v[3] );\
+}
+#define V3PRINT( x, y, v ) {\
+  QPRINTF( x, y, "[%.2lf, %.2lf, %.2lf]", v[0], v[1], v[2] );\
+}
+#define V2PRINT( x, y, v ) {\
+  QPRINTF( x, y, "[%.2lf, %.2lf]", v[0], v[1] );\
+}
+
+#define M2PRINT( x, y, m ) {\
+  QPRINTF( x, y, "[%.2lf, %.2lf]", m[0], m[1] );\
+  QPRINTF( x, y+defFont.h, "[%.2lf, %.2lf]", m[4], m[5] );\
+}
+#define M3PRINT( x, y, m ) {\
+  const Size Y = defFont.h;\
+  QPRINTF( x, y, "[%.2lf, %.2lf, %.2lf]", m[0], m[1], m[2] );\
+  QPRINTF( x, y+Y, "[%.2lf, %.2lf, %.2lf]", m[4], m[5], m[6] );\
+  QPRINTF( x, y+Y+Y, "[%.2lf, %.2lf, %.2lf]", m[8], m[9], m[10] );\
+}
+#define M4PRINT( x, y, m ) {\
+  const Size Y = defFont.h;\
+  QPRINTF( x, y, "[%.2lf, %.2lf, %.2lf, %.2lf]", m[0], m[1], m[2], m[3] );\
+  QPRINTF( x, y+Y, "[%.2lf, %.2lf, %.2lf, %.2lf]", m[4], m[5], m[6], m[7] );\
+  QPRINTF( x, y+Y+Y, "[%.2lf, %.2lf, %.2lf, %.2lf]", m[8], m[9], m[10], m[11] );\
+  QPRINTF( x, y+Y+Y+Y, "[%.2lf, %.2lf, %.2lf, %.2lf]", m[12], m[13], m[14], m[15] );\
+}
+
+
+void M4I( Mat4 m );
+void V4xMt( Vec4 dst, Vec4 v, Mat4 m );
+void MxM4( Mat4 a, Mat4 b );
+void VxP( Mat4 v, Mat4 p );
+
+void math33_create_translation_matrix( f64 x, f64 y, f64 z, Mat4 m );
+void math33_create_view_rotation_matrix( f64 x, f64 y, Mat4 m );
+void math33_create_view_matrix( Vec3 t, Vec3 r, Mat4 m );
+void math33_create_rotation_matrix( f64 x, f64 y, f64 z, Mat4 m );
+void math33_create_scale_matrix( f64 x, f64 y, f64 z, Mat4 m );
+void math33_create_world_matrix( Vec3 t, Vec3 r, Vec3 s, Mat4 m );
+
+
+#endif /** MATH33_H **/
-- 
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