canvas
Canvases are off-screen render targets you can draw into and then draw from.
You render to a canvas by calling nim2d.setCanvas(canvas) (see nim2d.nim),
and you draw a canvas like an image with canvas.draw(...), which is shared
with image.nim.
newCanvas ¶
proc newCanvas(nim2d: Nim2d; width, height: int32): Canvas
An off-screen render target. Point drawing at it with setCanvas, then
draw it like any image.
Parameters
-
nim2d(Nim2d) -
width(int32) -
height(int32)
Returns
Canvas
newCanvas ¶
proc newCanvas(nim2d: Nim2d): Canvas
A canvas the size of the window.
Parameters
-
nim2d(Nim2d)
Returns
Canvas
newImageData ¶
proc newImageData(nim2d: Nim2d; canvas: Canvas): ImageData
Read a canvas's pixels back from the GPU into a new ImageData, which you
can inspect with getPixel or save to a PNG with encode. The renderer
defers drawing until the end of the frame, so the pixels are what the
canvas held after the last completed frame. Draw to the canvas in one
frame and read it back in the next, in update, not in the middle of
the draw that fills it.
Parameters
-
nim2d(Nim2d) -
canvas(Canvas)
Returns
ImageData