Reorder tile transforms so transpose occurs before flips. Much more intuitive for flipping transposed tiles.

drivers/gles2/rasterizer_gles2.cpp

@@ -8119,6 +8119,9 @@ void RasterizerGLES2::_draw_textured_quad(const Rect2& p_rect, const Rect2& p_sr
 		(p_src_region.pos.y+p_src_region.size.height)/p_tex_size.height)
 	};
 
+	if (p_transpose) {
+		SWAP( texcoords[1], texcoords[3] );
+	}
 	if (p_h_flip) {
 		SWAP( texcoords[0], texcoords[1] );
 		SWAP( texcoords[2], texcoords[3] );
@@ -8127,9 +8130,6 @@ void RasterizerGLES2::_draw_textured_quad(const Rect2& p_rect, const Rect2& p_sr
 		SWAP( texcoords[1], texcoords[2] );
 		SWAP( texcoords[0], texcoords[3] );
 	}
-	if (p_transpose) {
-		SWAP( texcoords[1], texcoords[3] );
-	}
 
 	Vector2 coords[4]= {
 		Vector2( p_rect.pos.x, p_rect.pos.y ),

scene/2d/tile_map.cpp

@@ -242,19 +242,22 @@ void TileMap::_update_dirty_quadrants() {
 					Vector2 shape_ofs = tile_set->tile_get_shape_offset(c.id);
 					Matrix32 xform;
 					xform.set_origin(offset.floor());
+					if (c.transpose) {
+						SWAP(xform.elements[0].x, xform.elements[0].y);
+						SWAP(xform.elements[1].x, xform.elements[1].y);
+						SWAP(shape_ofs.x, shape_ofs.y);
+						SWAP(s.x, s.y);
+					}
 					if (c.flip_h) {
-						xform.elements[0]=-xform.elements[0];
+						xform.elements[0].x=-xform.elements[0].x;
+						xform.elements[1].x=-xform.elements[1].x;
 						shape_ofs.x=s.x-shape_ofs.x;
 					}
 					if (c.flip_v) {
-						xform.elements[1]=-xform.elements[1];
+						xform.elements[0].y=-xform.elements[0].y;
+						xform.elements[1].y=-xform.elements[1].y;
 						shape_ofs.y=s.y-shape_ofs.y;
 					}
-					if (c.transpose) {
-						SWAP(xform.elements[0].x, xform.elements[0].y);
-						SWAP(xform.elements[1].x, xform.elements[1].y);
-						SWAP(shape_ofs.x, shape_ofs.y);
-					}
 					xform.elements[2].x+=shape_ofs.x;
 					xform.elements[2].y+=shape_ofs.y;
 

tools/editor/plugins/tile_map_editor_plugin.cpp

@@ -42,9 +42,9 @@ void TileMapEditor::_notification(int p_what) {
 
 		case NOTIFICATION_READY: {
 
+			transpose->set_icon( get_icon("Transpose","EditorIcons"));
 			mirror_x->set_icon( get_icon("MirrorX","EditorIcons"));
 			mirror_y->set_icon( get_icon("MirrorY","EditorIcons"));
-			transpose->set_icon( get_icon("Transpose","EditorIcons"));
 			rotate_0->set_icon( get_icon("Rotate0","EditorIcons"));
 			rotate_90->set_icon( get_icon("Rotate90","EditorIcons"));
 			rotate_180->set_icon( get_icon("Rotate180","EditorIcons"));
@@ -90,6 +90,7 @@ void TileMapEditor::set_selected_tile(int p_tile) {
 	}
 }
 
+// Wrapper to workaround five arg limit of undo/redo methods
 void TileMapEditor::_set_cell_shortened(const Point2& p_pos,int p_value,bool p_flip_h, bool p_flip_v, bool p_transpose) {
 	ERR_FAIL_COND(!node);
 	node->set_cell(floor(p_pos.x), floor(p_pos.y), p_value, p_flip_h, p_flip_v, p_transpose);
@@ -757,8 +758,8 @@ void TileMapEditor::_update_transform_buttons(Object *p_button) {
 		transpose->set_pressed(false);
 	}
 	else if (b == rotate_90) {
-		mirror_x->set_pressed(false);
-		mirror_y->set_pressed(true);
+		mirror_x->set_pressed(true);
+		mirror_y->set_pressed(false);
 		transpose->set_pressed(true);
 	}
 	else if (b == rotate_180) {
@@ -767,15 +768,15 @@ void TileMapEditor::_update_transform_buttons(Object *p_button) {
 		transpose->set_pressed(false);
 	}
 	else if (b == rotate_270) {
-		mirror_x->set_pressed(true);
-		mirror_y->set_pressed(false);
+		mirror_x->set_pressed(false);
+		mirror_y->set_pressed(true);
 		transpose->set_pressed(true);
 	}
 	
 	rotate_0->set_pressed(!mirror_x->is_pressed() && !mirror_y->is_pressed() && !transpose->is_pressed());
-	rotate_90->set_pressed(!mirror_x->is_pressed() && mirror_y->is_pressed() && transpose->is_pressed());
+	rotate_90->set_pressed(mirror_x->is_pressed() && !mirror_y->is_pressed() && transpose->is_pressed());
 	rotate_180->set_pressed(mirror_x->is_pressed() && mirror_y->is_pressed() && !transpose->is_pressed());
-	rotate_270->set_pressed(mirror_x->is_pressed() && !mirror_y->is_pressed() && transpose->is_pressed());
+	rotate_270->set_pressed(!mirror_x->is_pressed() && mirror_y->is_pressed() && transpose->is_pressed());
 
 	mirror_x->set_block_signals(false);
 	mirror_y->set_block_signals(false);
@@ -807,6 +808,12 @@ TileMapEditor::TileMapEditor(EditorNode *p_editor) {
 	canvas_item_editor_hb = memnew( HBoxContainer );
 	CanvasItemEditor::get_singleton()->add_control_to_menu_panel(canvas_item_editor_hb);
 	canvas_item_editor_hb->add_child( memnew( VSeparator ));
+	transpose = memnew( ToolButton );
+	transpose->set_toggle_mode(true);
+	transpose->set_tooltip("Transpose");
+	transpose->set_focus_mode(FOCUS_NONE);
+	transpose->connect("pressed", this, "_update_transform_buttons", make_binds(transpose));
+	canvas_item_editor_hb->add_child(transpose);
 	mirror_x = memnew( ToolButton );
 	mirror_x->set_toggle_mode(true);
 	mirror_x->set_tooltip("Mirror X (A)");
@@ -819,12 +826,6 @@ TileMapEditor::TileMapEditor(EditorNode *p_editor) {
 	mirror_y->set_focus_mode(FOCUS_NONE);
 	mirror_y->connect("pressed", this, "_update_transform_buttons", make_binds(mirror_y));
 	canvas_item_editor_hb->add_child(mirror_y);
-	transpose = memnew( ToolButton );
-	transpose->set_toggle_mode(true);
-	transpose->set_tooltip("Transpose");
-	transpose->set_focus_mode(FOCUS_NONE);
-	transpose->connect("pressed", this, "_update_transform_buttons", make_binds(transpose));
-	canvas_item_editor_hb->add_child(transpose);
 	canvas_item_editor_hb->add_child(memnew(VSeparator));
 	rotate_0 = memnew( ToolButton );
 	rotate_0->set_toggle_mode(true);

tools/editor/plugins/tile_map_editor_plugin.h

@@ -71,9 +71,9 @@ class TileMapEditor : public VBoxContainer {
 	bool mouse_over;
 
 	Label *mirror_label;
+	ToolButton *transpose;
 	ToolButton *mirror_x;
 	ToolButton *mirror_y;
-	ToolButton *transpose;
 	ToolButton *rotate_0;
 	ToolButton *rotate_90;
 	ToolButton *rotate_180;