WOW
Incredibly awesome.
But it's incredibly OP too if used in normal terraria playthrough
This would definitely be overpowered in a regular game! lol
I designed this after seeing some posts in the Player Suggestions forum about a 'Creative Mode'. It looked as though most of the mods that allow some sort of creative mode do so by giving the player unlimited amounts of the item being placed or overriding the consumeItem function. But you're still limited to only being able to place tiles the player can normally place, and only doing so 1 tile at a time. I thought implementing it as if it were a Paint type program would allow for much easier designing. So I'd say this mod is for people looking for some sort of creative mode, map makers / role play designers, and the people who make the neat artsy images in-game.
Wow, just wow.
That is the most amazing mod I've ever seen.
Maybe "Neo Paint" or "Neo Draw"?
Thank you! I like Neo Draw. I might use that instead!
Do you plan to make pyramid and sky island spawnable?
Sky Island will be. Pyramid is doable, but to make it possible post map generation, I have to allow it to override just about any tile it wants to. This may make some people upset if they miss-click, or don't like the result. I will probably hold off on including Pyramid, Dungeon, and Lihzahrd creation until the Undo system is perfected. Paint, erase, and fill have limited undo operations, but the generation functions take a lot more to make undoable.
Trees, epic trees, living trees and cactus are all included now, with Sky Island, Hive, and Spider Nest next on the todo list.
That is awesome! For flood fill 2, are you using full bright from shockah's mods?
If so, how does it not crash tAPI. I have tried to use it but after turning it on it doesn't work.
Wil this mod allow you to place natural background walls?
I am using Full Bright, but not from any other mod. It's my own implementation. It's really easy to do anyway, it's just one line of code. I've never had any trouble using it or Shockah's implementation of full bright. I hope mine works for you, please let me know if it doesn't.
All walls will be placeable including natural walls. There will be some Tabs on the side of the large list of items that lets you switch between tile and wall placement.
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Some other info...
In the screenshots, when I move up to the top left box of buttons, the button with the wall mounted switch texture is the full bright toggle. There's also a toggle for grid view and wire view. The other buttons are square brush, circle brush, paint, erase, and fill.
Not visible in the screenshots is a third list box at the bottom left corner of the screen. If the tile selected to create has multiple variations it will allow you to select from them there. You can see the effects of it in the Paint example. After I select Short Grass Plants I choose which plant to draw: a blade of grass, the mushroom and the flower. This works for placing locked versions of chests for example.
The brush size ranges from 1 to 30 tiles wide. And is changed by using the mouse scroll wheel. Whenever an object is selected to place, like a table or furnace, the size will always be 1 tile.
While in Draw/Creative mode:
Player is immovable, and invulnerable
All movement is camera based
No creatures may spawn
No time passes
, so, will you kindly add "slider" or "number input" box to adjust the brush size? 
out ?