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Add mouse wheel support to demo.

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This commit is contained in:
Andre von Houck 2021-05-13 13:29:44 -07:00
parent aa7f31ba78
commit fcfcadc9dc
1 changed files with 9 additions and 2 deletions
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11
src/pixie/demo.nim
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@ -1,10 +1,12 @@
import opengl, pixie, staticglfw except Image import opengl, pixie, staticglfw
export pixie, staticglfw
export pixie, staticglfw except Image type Image = pixie.Image
var var
screen* = newImage(800, 600) screen* = newImage(800, 600)
window*: Window window*: Window
mouseWheelDelta*: float32
proc getMousePos*(): Vec2 = proc getMousePos*(): Vec2 =
## Get the mouse position. ## Get the mouse position.
@ -22,6 +24,9 @@ proc isKeyDown*(keyCode: int): bool =
## Examples: KEY_SPACE, KEY_UP, KEY_DOWN, KEY_LEFT, KEY_RIGHT ## Examples: KEY_SPACE, KEY_UP, KEY_DOWN, KEY_LEFT, KEY_RIGHT
getKey(window, keyCode.cint) == PRESS getKey(window, keyCode.cint) == PRESS
proc onScroll(window: staticglfw.Window, xoffset, yoffset: float64) {.cdecl.} =
mouseWheelDelta += yoffset
proc tick*() = proc tick*() =
## Called this every frame in a while loop. ## Called this every frame in a while loop.
@ -44,6 +49,7 @@ proc tick*() =
swapBuffers(window) swapBuffers(window)
mouseWheelDelta = 0
pollEvents() pollEvents()
if windowShouldClose(window) == 1: if windowShouldClose(window) == 1:
@ -59,6 +65,7 @@ proc start*(title = "Demo") =
if window == nil: if window == nil:
quit("Failed to create window.") quit("Failed to create window.")
makeContextCurrent(window) makeContextCurrent(window)
discard window.setScrollCallback(onScroll)
loadExtensions() loadExtensions()
# Allocate a texture and bind it. # Allocate a texture and bind it.