add floating-point vectors

src/util/vec/float2.h

@@ -0,0 +1,49 @@
+#pragma once
+
+#include <math.h>
+
+typedef struct {
+    float x;
+    float y;
+} float2;
+
+// adds two float2s together
+static inline float2 float2_add(float2 v1, float2 v2) {
+    return (float2){v1.x + v2.x, v1.y + v2.y};
+}
+
+// subtracts one float2 from another
+static inline float2 float2_sub(float2 v1, float2 v2) {
+    return (float2){v1.x - v2.x, v1.y - v2.y};
+}
+
+// multiplies the float2 by some value
+static inline float2 float2_mlt(float2 v, float n) {
+    return (float2){v.x * n, v.y * n};
+}
+
+// divides the float2 by some value
+static inline float2 float2_div(float2 v, float n) {
+    return (float2){v.x / n, v.y / n};
+}
+
+// gets the squared length of float2
+static inline float float2_len2(float2 v) {
+    return (v.x * v.x) + (v.y * v.y);
+}
+
+// gets the length of float2 (magnitude)
+static inline float float2_len(float2 v) {
+    return sqrtf(float2_len2(v));
+}
+
+// normalizes the float2
+static inline float2 float2_norm(float2 v) {
+    float len = float2_len(v);
+    return float2_div(v, len);
+}
+
+// gets the dot product of two float2s
+static inline float float2_dot(float2 v1, float2 v2) {
+    return v1.x * v2.x + v1.y * v2.y;
+}

src/util/vec/float3.h

@@ -0,0 +1,50 @@
+#pragma once
+
+#include <math.h>
+
+typedef struct {
+    float x;
+    float y;
+    float z;
+} float3;
+
+// adds two float3s together
+static inline float3 float3_add(float3 v1, float3 v2) {
+    return (float3){v1.x + v2.x, v1.y + v2.y, v1.z + v2.z};
+}
+
+// subtracts one float3 from another
+static inline float3 float3_sub(float3 v1, float3 v2) {
+    return (float3){v1.x - v2.x, v1.y - v2.y, v1.z - v2.z};
+}
+
+// multiplies the float3 by some value
+static inline float3 float3_mlt(float3 v, float n) {
+    return (float3){v.x * n, v.y * n, v.z * n};
+}
+
+// divides the float3 by some value
+static inline float3 float3_div(float3 v, float n) {
+    return (float3){v.x / n, v.y / n, v.z / n};
+}
+
+// gets the squared length of float3
+static inline float float3_len2(float3 v) {
+    return (v.x * v.x) + (v.y * v.y) + (v.z * v.z);
+}
+
+// gets the length of float3 (magnitude)
+static inline float float3_len(float3 v) {
+    return sqrtf(float3_len2(v));
+}
+
+// normalizes the float3
+static inline float3 float3_norm(float3 v) {
+    float len = float3_len(v);
+    return float3_div(v, len);
+}
+
+// gets the dot product of two float3s
+static inline float float3_dot(float3 v1, float3 v2) {
+    return v1.x * v2.x + v1.y * v2.y +v1.z * v2.z;
+}

src/util/vec/float4.h

@@ -0,0 +1,51 @@
+#pragma once
+
+#include <math.h>
+
+typedef struct {
+    float x;
+    float y;
+    float z;
+    float w;
+} float4;
+
+// adds two float3s together
+static inline float4 float3_add(float4 v1, float4 v2) {
+    return (float4){v1.x + v2.x, v1.y + v2.y, v1.z + v2.z, v1.w + v2.w};
+}
+
+// subtracts one float3 from another
+static inline float4 float3_sub(float4 v1, float4 v2) {
+    return (float4){v1.x - v2.x, v1.y - v2.y, v1.z - v2.z, v1.w - v2.w};
+}
+
+// multiplies the float3 by some value
+static inline float4 float3_mlt(float4 v, float n) {
+    return (float4){v.x * n, v.y * n, v.z * n, v.w * n};
+}
+
+// divides the float3 by some value
+static inline float4 float3_div(float4 v, float n) {
+    return (float4){v.x / n, v.y / n, v.z / n, v.w / n};
+}
+
+// gets the squared length of float3
+static inline float float3_len2(float4 v) {
+    return (v.x * v.x) + (v.y * v.y) + (v.z * v.z);
+}
+
+// gets the length of float3 (magnitude)
+static inline float float3_len(float4 v) {
+    return sqrtf(float3_len2(v));
+}
+
+// normalizes the float3
+static inline float4 float3_norm(float4 v) {
+    float len = float3_len(v);
+    return float3_div(v, len);
+}
+
+// gets the dot product of two float3s
+static inline float float3_dot(float4 v1, float4 v2) {
+    return v1.x * v2.x + v1.y * v2.y +v1.z * v2.z + v1.w * v2.w;
+}