From 276cb1a77c09f1f4fee89bb7a28056f66e9fb27b Mon Sep 17 00:00:00 2001
From: luboslenco <lubos.lenco@gmail.com>
Date: Thu, 18 Feb 2021 11:25:46 +0100
Subject: [PATCH] Save camera in project

---
 Sources/arm/ProjectFormat.hx |  5 ++++-
 Sources/arm/io/ExportArm.hx  | 11 +++++++++++
 Sources/arm/io/ImportArm.hx  | 10 ++++++++++
 3 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/Sources/arm/ProjectFormat.hx b/Sources/arm/ProjectFormat.hx
index 7311a324..625b9ae9 100644
--- a/Sources/arm/ProjectFormat.hx
+++ b/Sources/arm/ProjectFormat.hx
@@ -21,7 +21,10 @@ typedef TProjectFormat = {
 	@:optional public var is_bgra: Null<Bool>; // Swapped red and blue channels for layer textures
 	@:optional public var packed_assets: Array<TPackedAsset>;
 	@:optional public var envmap: String; // Asset name
-	@:optional public var envmap_strength: Float;
+	@:optional public var envmap_strength: Null<Float>;
+	@:optional public var camera_world: kha.arrays.Float32Array;
+	@:optional public var camera_origin: kha.arrays.Float32Array;
+	@:optional public var camera_fov: Null<Float>;
 }
 
 typedef TLayerData = {
diff --git a/Sources/arm/io/ExportArm.hx b/Sources/arm/io/ExportArm.hx
index 51c5dddf..481dba85 100644
--- a/Sources/arm/io/ExportArm.hx
+++ b/Sources/arm/io/ExportArm.hx
@@ -108,6 +108,9 @@ class ExportArm {
 			packed_assets: packed_assets,
 			envmap: Project.raw.envmap != null ? (sameDrive ? Path.toRelative(Project.filepath, Project.raw.envmap) : Project.raw.envmap) : null,
 			envmap_strength: iron.Scene.active.world.probe.raw.strength,
+			camera_world: iron.Scene.active.camera.transform.local.toFloat32Array(),
+			camera_origin: vec3f32(arm.plugin.Camera.inst.origins[0]),
+			camera_fov: iron.Scene.active.camera.data.raw.fov,
 			#if (kha_metal || kha_vulkan)
 			is_bgra: true
 			#else
@@ -362,4 +365,12 @@ class ExportArm {
 		var bytes = ArmPack.encode(raw);
 		Krom.fileSaveBytes(path, bytes.getData(), bytes.length + 1);
 	}
+
+	static function vec3f32(v: iron.math.Vec4): kha.arrays.Float32Array {
+		var res = new kha.arrays.Float32Array(3);
+		res[0] = v.x;
+		res[1] = v.y;
+		res[2] = v.z;
+		return res;
+	}
 }
diff --git a/Sources/arm/io/ImportArm.hx b/Sources/arm/io/ImportArm.hx
index 44adf7b0..ec13dcb9 100644
--- a/Sources/arm/io/ImportArm.hx
+++ b/Sources/arm/io/ImportArm.hx
@@ -117,6 +117,16 @@ class ImportArm {
 			if (Project.raw.envmap_strength != null) {
 				iron.Scene.active.world.probe.raw.strength = Project.raw.envmap_strength;
 			}
+			if (Project.raw.camera_world != null) {
+				iron.Scene.active.camera.transform.local = Mat4.fromFloat32Array(Project.raw.camera_world);
+				iron.Scene.active.camera.transform.decompose();
+				iron.Scene.active.camera.data.raw.fov = Project.raw.camera_fov;
+				iron.Scene.active.camera.buildProjection();
+				var origin = Project.raw.camera_origin;
+				arm.plugin.Camera.inst.origins[0].x = origin[0];
+				arm.plugin.Camera.inst.origins[0].y = origin[1];
+				arm.plugin.Camera.inst.origins[0].z = origin[2];
+			}
 
 			for (file in project.assets) {
 				#if krom_windows