From: Mikko Rasa <tdb@tdb.fi>
Date: Sun, 26 May 2019 18:18:01 +0000 (+0300)
Subject: Add an exporter for Blender cameras
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=commitdiff_plain;h=2f20c5941aef604c5a49eecebec0fb7f2d2f6dbd

Add an exporter for Blender cameras
---

diff --git a/blender/io_mspgl/__init__.py b/blender/io_mspgl/__init__.py
index 905bfe73..87aedae5 100644
--- a/blender/io_mspgl/__init__.py
+++ b/blender/io_mspgl/__init__.py
@@ -7,7 +7,7 @@ bl_info = {
 
 if "bpy" in locals():
 	import imp
-	for sub in "armature", "datafile", "export_armature", "export_material", "export_mesh", "export_object", "export_scene", "export_texture", "material", "mesh", "properties", "util":
+	for sub in "armature", "datafile", "export_armature", "export_camera", "export_material", "export_mesh", "export_object", "export_scene", "export_texture", "material", "mesh", "properties", "util":
 		if sub in locals():
 			imp.reload(locals()[sub])
 
@@ -106,11 +106,22 @@ class ExportMspGLScene(bpy.types.Operator, ExportMspGLBase):
 		col = self.layout.column()
 		col.prop(self, "resource_collection")
 
+class ExportMspGLCamera(bpy.types.Operator, ExportMspGLBase):
+	bl_idname = "export.mspgl_camera"
+	bl_label = "Export Msp GL camera"
+
+	filename_ext = ".camera"
+
+	def create_exporter(self):
+		from .export_camera import CameraExporter
+		return CameraExporter()
+
 def menu_func_export(self, context):
 	self.layout.operator(ExportMspGLMesh.bl_idname, text="Msp GL mesh")
 	self.layout.operator(ExportMspGLObject.bl_idname, text="Msp GL object")
 	self.layout.operator(ExportMspGLArmature.bl_idname, text="Msp GL armature")
 	self.layout.operator(ExportMspGLScene.bl_idname, text="Msp GL scene")
+	self.layout.operator(ExportMspGLCamera.bl_idname, text="Msp GL camera")
 
 from .properties import MspGLMeshProperties, MspGLObjectProperties
 
diff --git a/blender/io_mspgl/export_camera.py b/blender/io_mspgl/export_camera.py
new file mode 100644
index 00000000..1594423a
--- /dev/null
+++ b/blender/io_mspgl/export_camera.py
@@ -0,0 +1,29 @@
+import math
+import mathutils
+
+class CameraExporter:
+	def export_to_file(self, context, out_fn):
+		obj = context.active_object
+
+		resource = self.export_camera(obj)
+
+		with open(out_fn, "w") as out_file:
+			for s in resource.statements:
+				s.write_to_file(out_file)
+
+	def export_camera(self, obj):
+		if obj.type!='CAMERA':
+			raise Exception("Object is not a camera")
+
+		from .datafile import Resource, Statement
+		resource = Resource(obj.name+".camera")
+
+		position = obj.matrix_world*mathutils.Vector((0, 0, 0))
+		resource.statements.append(Statement("position", position[0], position[1], position[2]))
+		look_dir = obj.matrix_world*mathutils.Vector((0, 0, -1, 0))
+		resource.statements.append(Statement("look_direction", look_dir[0], look_dir[1], look_dir[2]))
+		resource.statements.append(Statement("up_direction", 0.0, 0.0, 1.0))
+		resource.statements.append(Statement("field_of_view", obj.data.angle_y*180/math.pi))
+		resource.statements.append(Statement("depth_clip", obj.data.clip_start, obj.data.clip_end))
+
+		return resource