imgui part 1

utility.odin

@@ -0,0 +1,115 @@
+package main
+
+import rl "libraries/raylib"
+import "core:math/linalg"
+
+v1 :: [1]f32
+v2 :: [2]f32
+v3 :: [3]f32
+v4 :: [4]f32
+iv2 :: [2]i32
+iv3 :: [3]i32
+iv4 :: [4]i32
+mat2 :: matrix[2, 2]f32
+mat3 :: matrix[3, 3]f32
+mat4 :: matrix[4, 4]f32
+rect2 :: rl.Rectangle
+irect2 :: struct {x, y, width, height: i32}
+tri2 :: [3]v2
+Bezier :: [3]v2
+
+/// ### GEOMETRY ### ///
+rect_from :: proc {
+	rect2_from_v2,
+	irect2_from_iv2,
+}
+
+@(private="file") rect2_from_v2 :: proc "contextless" (position, size: v2) -> rect2 {
+	return {position.x, position.y, size.x, size.y}
+}
+
+@(private="file") irect2_from_iv2 :: proc "contextless" (position, size: iv2) -> irect2 {
+	return {position.x, position.y, size.x, size.y}
+}
+
+rect_scale :: proc{
+	rect2_scale,
+	irect2_scale,
+}
+
+@(private="file") rect2_scale :: proc "contextless" (rect: rect2, scalar: f32) -> rect2 {
+	return {rect.x * scalar, rect.y * scalar, rect.width * scalar, rect.height * scalar}
+}
+
+@(private="file") irect2_scale :: proc "contextless" (rect: irect2, scalar: i32) -> irect2 {
+	return {rect.x * scalar, rect.y * scalar, rect.width * scalar, rect.height * scalar}
+}
+
+rect_grow :: proc {
+	rect2_grow,
+	rect2_grow_v2,
+	irect2_grow,
+	rect2_grow_iv2,
+}
+
+@(private="file") rect2_grow :: proc "contextless" (rect: rect2, grow: f32) -> rect2 {
+	return {rect.x - grow, rect.y - grow, rect.width + grow * 2.0, rect.height + grow * 2.0}
+}
+
+@(private="file") rect2_grow_v2 :: proc "contextless" (rect: rect2, grow: v2) -> rect2 {
+	return {rect.x - grow.x, rect.y - grow.y, rect.width + grow.x * 2.0, rect.height + grow.y * 2.0}
+}
+
+@(private="file") irect2_grow :: proc "contextless" (rect: irect2, grow: i32) -> irect2 {
+	return {rect.x - grow, rect.y - grow, rect.width + grow * 2, rect.height + grow * 2}
+}
+
+@(private="file") rect2_grow_iv2 :: proc "contextless" (rect: irect2, grow: iv2) -> irect2 {
+	return {rect.x - grow.x, rect.y - grow.y, rect.width + grow.x * 2.0, rect.height + grow.y * 2.0}
+}
+
+
+rect_from_area :: proc {
+	rect_from_area_v2,
+	rect_from_area_iv2,
+}
+
+@(private="file") rect_from_area_v2 :: proc "contextless" (start, end: v2) -> rect2 {
+	tl := linalg.min(start, end)
+	return {**tl, **(linalg.max(start, end) - tl)}
+}
+
+@(private="file") rect_from_area_iv2 :: proc "contextless" (start, end: iv2) -> irect2 {
+	tl := linalg.min(start, end)
+	return {**tl, **(linalg.max(start, end) - tl)}
+}
+
+rect_from_corners :: proc {
+	rect2_from_corners,
+	irect2_from_corners,
+}
+
+@(private="file") rect2_from_corners :: proc "contextless" (tl, tr, br, bl: v2) -> rect2 {
+	top_left := linalg.min(linalg.min(tl, tr, br), bl)
+	bottom_right := linalg.max(linalg.max(tl, tr, br), bl)
+	return {**top_left, **(bottom_right - top_left)}
+}
+
+@(private="file") irect2_from_corners :: proc "contextless" (tl, tr, br, bl: iv2) -> irect2 {
+	top_left := linalg.min(linalg.min(tl, tr, br), bl)
+	bottom_right := linalg.max(linalg.max(tl, tr, br), bl)
+	return {**top_left, **(bottom_right - top_left)}
+}
+
+rect_get_br :: proc {
+	rect2_get_br,
+	irect2_get_br,
+}
+
+@(private="file") rect2_get_br :: proc(rect: rect2) -> v2 {
+	return {rect.x + rect.width, rect.y + rect.height}
+}
+
+@(private="file") irect2_get_br :: proc(rect: irect2) -> iv2 {
+	return {rect.x + rect.width, rect.y + rect.height}
+}