Added my tile_generator addon.

tile_generator/plugin.cfg

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+[plugin]
+
+name="tile_generator"
+description=""
+author="Relintai"
+version=""
+script="plugin.gd"

tile_generator/plugin.gd

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+tool
+extends EditorPlugin
+
+var SimpleTile = preload("res://addons/tile_generator/smple_tile.gd")
+var ShearTile = preload("res://addons/tile_generator/shear_tile.gd")
+
+func _enter_tree():
+	add_custom_type("SimpleTile", "Resource", SimpleTile, null)
+	add_custom_type("ShearTile", "Resource", ShearTile, null)
+
+func _exit_tree():
+	remove_custom_type("SimpleTile")
+	remove_custom_type("ShearTile")

tile_generator/shear_tile.gd

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+tool
+extends Resource
+
+export(Texture) var input : Texture
+export(String) var output_image_name : String = "output"
+export(float) var shear_amount : float = 0.3
+export(int) var image_count : int = 1
+export(int) var image_size_x : int = 32
+export(int) var image_size_y : int = 64
+export(bool) var alpha_crop : bool = true
+
+export(bool) var generate : bool = false setget set_generate, get_generate
+
+static func shear(uv : Vector2, center : Vector2, amount : float,  direction : Vector2) -> Vector2:
+	return uv + Vector2(amount, amount) * (Vector2(uv.y, uv.x) - center) * direction
+
+static func shear_vertical(uv : Vector2, center : Vector2, amount : float) -> Vector2:
+	return uv + Vector2(amount, amount) * (Vector2(uv.y, uv.x) - center) * Vector2(0, 1)
+	
+static func shear_horizontal(uv : Vector2, center : Vector2, amount : float) -> Vector2:
+	return uv + Vector2(amount, amount) * (Vector2(uv.y, uv.x) - center) * Vector2(1, 0)
+
+#from mat_maker_gd
+static func rotate(uv : Vector2, center : Vector2, rotate : float) -> Vector2:
+	var rv : Vector2 = Vector2()
+	uv -= center
+	rv.x = cos(rotate)*uv.x + sin(rotate)*uv.y
+	rv.y = -sin(rotate)*uv.x + cos(rotate)*uv.y
+	rv += center
+	return rv
+
+#from mat_maker_gd
+static func scale(uv : Vector2, center : Vector2, scale : Vector2) -> Vector2:
+	uv -= center
+	uv /= scale
+	uv += center
+	return uv
+
+func generate():
+	if !input:
+		return
+	
+	var inimg : Image = input.get_data()
+	var img : Image = null
+	
+	if image_count > 1:
+		pass
+	else:
+		img = Image.new()
+		img.create(inimg.get_width() * 3, inimg.get_height() * 3, false, Image.FORMAT_RGBA8)
+	
+	var ofsx : int = inimg.get_width()
+	var ofsy : int = inimg.get_height()
+	
+	img.lock()
+	inimg.lock()
+	
+	for x in range(inimg.get_width()):
+		for y in range(inimg.get_height()):
+			var np : Vector2 = shear_vertical(Vector2(x, y), Vector2(x / 2, y / 2), shear_amount)
+			np += Vector2(ofsx, ofsy)
+			
+			var c : Color = inimg.get_pixel(x, y)
+			
+			img.set_pixel(np.x, np.y, c)
+	
+	img.unlock()
+	inimg.unlock()
+	
+	img = crop_image(img)
+	
+	img.resize(image_size_x, image_size_y, Image.INTERPOLATE_CUBIC)
+	
+	if alpha_crop:
+		alpha_crop(img)
+	
+	img.save_png(resource_path.get_base_dir() + "/" + output_image_name + ".png")
+
+func alpha_crop(img : Image) -> void:
+	img.lock()
+
+	for x in range(img.get_width()):
+		for y in range(img.get_height()):
+			var c : Color = img.get_pixel(x, y)
+			
+			if c.a < 0.5:
+				img.set_pixel(x, y, Color(0, 0, 0, 0))
+			elif c.a < 1:
+				c.a = 1
+				img.set_pixel(x, y, c)
+			
+	img.unlock()
+
+func crop_image(img : Image) -> Image:
+	img.lock()
+	
+	var xmin : int = img.get_width() + 1
+	var xmax : int = 0
+	var ymin : int = img.get_height() + 1
+	var ymax : int = 0
+	
+	for x in range(img.get_width()):
+		for y in range(img.get_height()):
+			var c : Color = img.get_pixel(x, y)
+			
+			if c.a < 0.02:
+				continue
+				
+			if xmin > x:
+				xmin = x
+				
+			if xmax < x:
+				xmax = x
+				
+			if ymin > y:
+				ymin = y
+				
+			if ymax < y:
+				ymax = y
+	
+	img.unlock()
+	
+	var w : int = xmax - xmin
+	var h : int = ymax - ymin
+	
+	var rimg : Image = Image.new()
+	rimg.create(w, h, false, Image.FORMAT_RGBA8)
+	
+	rimg.blit_rect(img, Rect2(xmin, ymin, w, h), Vector2())
+	
+	return rimg
+
+func set_generate(val):
+	if val:
+		generate()
+
+func get_generate():
+	return false

tile_generator/smple_tile.gd

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+tool
+extends Resource
+
+export(Texture) var input : Texture
+export(String) var output_image_name : String = "output"
+export(int) var image_count : int = 1
+export(int) var image_size_x : int = 64
+export(int) var image_size_y : int = 32
+export(bool) var alpha_crop : bool = true
+
+export(bool) var generate : bool = false setget set_generate, get_generate
+
+#from mat_maker_gd
+static func rotate(uv : Vector2, center : Vector2, rotate : float) -> Vector2:
+	var rv : Vector2 = Vector2()
+	uv -= center
+	rv.x = cos(rotate)*uv.x + sin(rotate)*uv.y
+	rv.y = -sin(rotate)*uv.x + cos(rotate)*uv.y
+	rv += center
+	return rv
+
+#from mat_maker_gd
+static func scale(uv : Vector2, center : Vector2, scale : Vector2) -> Vector2:
+	uv -= center
+	uv /= scale
+	uv += center
+	return uv
+
+func generate():
+	if !input:
+		return
+	
+	var inimg : Image = input.get_data()
+	var img : Image = null
+	
+	if image_count > 1:
+		pass
+	else:
+		img = Image.new()
+		img.create(inimg.get_width() * 3, inimg.get_height() * 3, false, Image.FORMAT_RGBA8)
+	
+	var ofsx : int = inimg.get_width()
+	var ofsy : int = inimg.get_height()
+	
+	img.lock()
+	inimg.lock()
+	
+	for x in range(inimg.get_width()):
+		for y in range(inimg.get_height()):
+			var np : Vector2 = rotate(Vector2(x, y), Vector2(x / 2, y / 2), deg2rad(90))
+			np += Vector2(ofsx, ofsy)
+			
+			var c : Color = inimg.get_pixel(x, y)
+			
+			img.set_pixel(np.x, np.y, c)
+	
+	img.unlock()
+	inimg.unlock()
+	
+	img = crop_image(img)
+	
+	img.resize(image_size_x, image_size_y, Image.INTERPOLATE_CUBIC)
+	
+	if alpha_crop:
+		alpha_crop(img)
+	
+	img.save_png(resource_path.get_base_dir() + "/" + output_image_name + ".png")
+
+func alpha_crop(img : Image) -> void:
+	img.lock()
+
+	for x in range(img.get_width()):
+		for y in range(img.get_height()):
+			var c : Color = img.get_pixel(x, y)
+			
+			if c.a < 0.5:
+				img.set_pixel(x, y, Color(0, 0, 0, 0))
+			elif c.a < 1:
+				c.a = 1
+				img.set_pixel(x, y, c)
+			
+	img.unlock()
+
+func crop_image(img : Image) -> Image:
+	img.lock()
+	
+	var xmin : int = img.get_width() + 1
+	var xmax : int = 0
+	var ymin : int = img.get_height() + 1
+	var ymax : int = 0
+	
+	for x in range(img.get_width()):
+		for y in range(img.get_height()):
+			var c : Color = img.get_pixel(x, y)
+			
+			if c.a < 0.02:
+				continue
+				
+			if xmin > x:
+				xmin = x
+				
+			if xmax < x:
+				xmax = x
+				
+			if ymin > y:
+				ymin = y
+				
+			if ymax < y:
+				ymax = y
+	
+	img.unlock()
+	
+	var w : int = xmax - xmin
+	var h : int = ymax - ymin
+	
+	var rimg : Image = Image.new()
+	rimg.create(w, h, false, Image.FORMAT_RGBA8)
+	
+	rimg.blit_rect(img, Rect2(xmin, ymin, w, h), Vector2())
+	
+	return rimg
+
+func set_generate(val):
+	if val:
+		generate()
+
+func get_generate():
+	return false