rm realtime examples, suggest better approach with boxy
This commit is contained in:
Ryan Oldenburg
parent
bde0d2fd5c
commit
e6c799a04f
7 changed files with 2 additions and 577 deletions
|
|
@ -99,14 +99,9 @@ Q q T t | ✅ | quadratic to |
|
|||
A a | ✅ | arc to |
|
||||
z | ✅ | close path |
|
||||
|
||||
### Realtime Examples
|
||||
### Pixie + GPU
|
||||
|
||||
Here are some examples of using Pixie for realtime rendering with some popular windowing libraries:
|
||||
|
||||
* [examples/realtime_glfw.nim](examples/realtime_glfw.nim)
|
||||
* [examples/realtime_glut.nim](examples/realtime_glut.nim)
|
||||
* [examples/realtime_sdl.nim](examples/realtime_sdl.nim)
|
||||
* [examples/realtime_win32.nim](examples/realtime_win32.nim)
|
||||
To learn how to use Pixie for realtime graphics with GPU, check out [Boxy](https://github.com/treeform/boxy).
|
||||
|
||||
## Testing
|
||||
|
||||
|
|
|
|||
|
|
@ -1,81 +0,0 @@
|
|||
## This example show how to have real time pixie using glfw API.
|
||||
|
||||
import math, opengl, pixie, staticglfw
|
||||
|
||||
let
|
||||
w: int32 = 256
|
||||
h: int32 = 256
|
||||
|
||||
var
|
||||
screen = newImage(w, h)
|
||||
ctx = newContext(screen)
|
||||
frameCount = 0
|
||||
window: Window
|
||||
|
||||
proc display() =
|
||||
## Called every frame by main while loop
|
||||
|
||||
# draw shiny sphere on gradient background
|
||||
let linerGradient = newPaint(pkGradientLinear)
|
||||
linerGradient.gradientHandlePositions.add(vec2(0, 0))
|
||||
linerGradient.gradientHandlePositions.add(vec2(0, 256))
|
||||
linerGradient.gradientStops.add(
|
||||
ColorStop(color: color(0, 0, 0, 1), position: 0))
|
||||
linerGradient.gradientStops.add(
|
||||
ColorStop(color: color(1, 1, 1, 1), position: 1))
|
||||
ctx.fillStyle = linerGradient
|
||||
ctx.fillRect(0, 0, 256, 256)
|
||||
|
||||
let radialGradient = newPaint(pkGradientRadial)
|
||||
radialGradient.gradientHandlePositions.add(vec2(128, 128))
|
||||
radialGradient.gradientHandlePositions.add(vec2(256, 128))
|
||||
radialGradient.gradientHandlePositions.add(vec2(128, 256))
|
||||
radialGradient.gradientStops.add(
|
||||
ColorStop(color: color(1, 1, 1, 1), position: 0))
|
||||
radialGradient.gradientStops.add(
|
||||
ColorStop(color: color(0, 0, 0, 1), position: 1))
|
||||
ctx.fillStyle = radialGradient
|
||||
ctx.fillCircle(circle(
|
||||
vec2(128.0, 128.0 + sin(float32(frameCount)/10.0) * 20),
|
||||
76.8
|
||||
))
|
||||
|
||||
# update texture with new pixels from surface
|
||||
var dataPtr = ctx.image.data[0].addr
|
||||
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, GLsizei w, GLsizei h, GL_RGBA,
|
||||
GL_UNSIGNED_BYTE, dataPtr)
|
||||
|
||||
# draw a quad over the whole screen
|
||||
glClear(GL_COLOR_BUFFER_BIT)
|
||||
glBegin(GL_QUADS)
|
||||
glTexCoord2d(0.0, 0.0); glVertex2d(-1.0, +1.0)
|
||||
glTexCoord2d(1.0, 0.0); glVertex2d(+1.0, +1.0)
|
||||
glTexCoord2d(1.0, 1.0); glVertex2d(+1.0, -1.0)
|
||||
glTexCoord2d(0.0, 1.0); glVertex2d(-1.0, -1.0)
|
||||
glEnd()
|
||||
|
||||
inc frameCount
|
||||
swapBuffers(window)
|
||||
|
||||
if init() == 0:
|
||||
quit("Failed to Initialize GLFW.")
|
||||
|
||||
windowHint(RESIZABLE, false.cint)
|
||||
window = createWindow(w.cint, h.cint, "GLFW/Pixie", nil, nil)
|
||||
|
||||
makeContextCurrent(window)
|
||||
loadExtensions()
|
||||
|
||||
# allocate a texture and bind it
|
||||
var dataPtr = ctx.image.data[0].addr
|
||||
glTexImage2D(GL_TEXTURE_2D, 0, 3, GLsizei w, GLsizei h, 0, GL_RGBA,
|
||||
GL_UNSIGNED_BYTE, dataPtr)
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP)
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP)
|
||||
glEnable(GL_TEXTURE_2D)
|
||||
|
||||
while windowShouldClose(window) != 1:
|
||||
pollEvents()
|
||||
display()
|
||||
|
|
@ -1,78 +0,0 @@
|
|||
## This example show how to have real time pixie using glut API.
|
||||
|
||||
import math, opengl, opengl/glu, opengl/glut, pixie
|
||||
|
||||
let
|
||||
w: int32 = 256
|
||||
h: int32 = 256
|
||||
|
||||
var
|
||||
screen = newImage(w, h)
|
||||
ctx = newContext(screen)
|
||||
frameCount = 0
|
||||
|
||||
proc display() {.cdecl.} =
|
||||
## Called every frame by GLUT
|
||||
|
||||
# draw shiny sphere on gradient background
|
||||
let linerGradient = newPaint(pkGradientLinear)
|
||||
linerGradient.gradientHandlePositions.add(vec2(0, 0))
|
||||
linerGradient.gradientHandlePositions.add(vec2(0, 256))
|
||||
linerGradient.gradientStops.add(
|
||||
ColorStop(color: color(0, 0, 0, 1), position: 0))
|
||||
linerGradient.gradientStops.add(
|
||||
ColorStop(color: color(1, 1, 1, 1), position: 1))
|
||||
ctx.fillStyle = linerGradient
|
||||
ctx.fillRect(0, 0, 256, 256)
|
||||
|
||||
let radialGradient = newPaint(pkGradientRadial)
|
||||
radialGradient.gradientHandlePositions.add(vec2(128, 128))
|
||||
radialGradient.gradientHandlePositions.add(vec2(256, 128))
|
||||
radialGradient.gradientHandlePositions.add(vec2(128, 256))
|
||||
radialGradient.gradientStops.add(
|
||||
ColorStop(color: color(1, 1, 1, 1), position: 0))
|
||||
radialGradient.gradientStops.add(
|
||||
ColorStop(color: color(0, 0, 0, 1), position: 1))
|
||||
ctx.fillStyle = radialGradient
|
||||
ctx.fillCircle(circle(
|
||||
vec2(128.0, 128.0 + sin(float32(frameCount)/10.0) * 20),
|
||||
76.8
|
||||
))
|
||||
# update texture with new pixels from surface
|
||||
var dataPtr = ctx.image.data[0].addr
|
||||
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, GLsizei w, GLsizei h, GL_RGBA,
|
||||
GL_UNSIGNED_BYTE, dataPtr)
|
||||
|
||||
# draw a quad over the whole screen
|
||||
glClear(GL_COLOR_BUFFER_BIT)
|
||||
glBegin(GL_QUADS)
|
||||
glTexCoord2d(0.0, 0.0); glVertex2d(-1.0, +1.0)
|
||||
glTexCoord2d(1.0, 0.0); glVertex2d(+1.0, +1.0)
|
||||
glTexCoord2d(1.0, 1.0); glVertex2d(+1.0, -1.0)
|
||||
glTexCoord2d(0.0, 1.0); glVertex2d(-1.0, -1.0)
|
||||
glEnd()
|
||||
glutSwapBuffers()
|
||||
|
||||
inc frameCount
|
||||
|
||||
glutPostRedisplay() # ask glut to draw next frame
|
||||
|
||||
glutInit()
|
||||
glutInitDisplayMode(GLUT_DOUBLE)
|
||||
glutInitWindowSize(w, h)
|
||||
discard glutCreateWindow("GLUT/Pixie")
|
||||
|
||||
glutDisplayFunc(display)
|
||||
loadExtensions()
|
||||
|
||||
# allocate a texture and bind it
|
||||
var dataPtr = ctx.image.data[0].addr
|
||||
glTexImage2D(GL_TEXTURE_2D, 0, 3, GLsizei w, GLsizei h, 0, GL_RGBA,
|
||||
GL_UNSIGNED_BYTE, dataPtr)
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP)
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP)
|
||||
glEnable(GL_TEXTURE_2D)
|
||||
|
||||
glutMainLoop()
|
||||
|
|
@ -1,75 +0,0 @@
|
|||
## This example show how to have real time pixie using sdl2 API.
|
||||
|
||||
import math, pixie, sdl2, sdl2/gfx
|
||||
|
||||
const
|
||||
rmask = uint32 0x000000ff
|
||||
gmask = uint32 0x0000ff00
|
||||
bmask = uint32 0x00ff0000
|
||||
amask = uint32 0xff000000
|
||||
|
||||
let
|
||||
w: int32 = 256
|
||||
h: int32 = 256
|
||||
|
||||
var
|
||||
screen = newImage(w, h)
|
||||
ctx = newContext(screen)
|
||||
frameCount = 0
|
||||
window: WindowPtr
|
||||
render: RendererPtr
|
||||
mainSurface: SurfacePtr
|
||||
mainTexture: TexturePtr
|
||||
evt = sdl2.defaultEvent
|
||||
|
||||
proc display() =
|
||||
## Called every frame by main while loop
|
||||
|
||||
# draw shiny sphere on gradient background
|
||||
let linerGradient = newPaint(pkGradientLinear)
|
||||
linerGradient.gradientHandlePositions.add(vec2(0, 0))
|
||||
linerGradient.gradientHandlePositions.add(vec2(0, 256))
|
||||
linerGradient.gradientStops.add(
|
||||
ColorStop(color: pixie.color(0, 0, 0, 1), position: 0))
|
||||
linerGradient.gradientStops.add(
|
||||
ColorStop(color: pixie.color(1, 1, 1, 1), position: 1))
|
||||
ctx.fillStyle = linerGradient
|
||||
ctx.fillRect(0, 0, 256, 256)
|
||||
|
||||
let radialGradient = newPaint(pkGradientRadial)
|
||||
radialGradient.gradientHandlePositions.add(vec2(128, 128))
|
||||
radialGradient.gradientHandlePositions.add(vec2(256, 128))
|
||||
radialGradient.gradientHandlePositions.add(vec2(128, 256))
|
||||
radialGradient.gradientStops.add(
|
||||
ColorStop(color: pixie.color(1, 1, 1, 1), position: 0))
|
||||
radialGradient.gradientStops.add(
|
||||
ColorStop(color: pixie.color(0, 0, 0, 1), position: 1))
|
||||
ctx.fillStyle = radialGradient
|
||||
ctx.fillCircle(circle(
|
||||
vec2(128.0, 128.0 + sin(float32(frameCount)/10.0) * 20),
|
||||
76.8
|
||||
))
|
||||
inc frameCount
|
||||
|
||||
var dataPtr = ctx.image.data[0].addr
|
||||
mainSurface = createRGBSurfaceFrom(dataPtr, cint w, cint h, cint 32, cint 4*w,
|
||||
rmask, gmask, bmask, amask)
|
||||
mainTexture = render.createTextureFromSurface(mainSurface)
|
||||
destroy(mainSurface)
|
||||
|
||||
render.clear()
|
||||
render.copy(mainTexture, nil, nil)
|
||||
destroy(mainTexture)
|
||||
|
||||
render.present()
|
||||
|
||||
discard sdl2.init(INIT_EVERYTHING)
|
||||
window = createWindow("SDL/Pixie", 100, 100, cint w, cint h, SDL_WINDOW_SHOWN)
|
||||
render = createRenderer(window, -1, 0)
|
||||
|
||||
while true:
|
||||
while pollEvent(evt):
|
||||
if evt.kind == QuitEvent:
|
||||
quit(0)
|
||||
display()
|
||||
delay(14)
|
||||
|
|
@ -1,144 +0,0 @@
|
|||
## This example show how to have real time pixie using win32 API.
|
||||
|
||||
import pixie, winim/lean
|
||||
|
||||
let
|
||||
w: int32 = 256
|
||||
h: int32 = 256
|
||||
|
||||
var
|
||||
screen = newImage(w, h)
|
||||
ctx = newContext(screen)
|
||||
frameCount = 0
|
||||
hwnd: HWND
|
||||
running = true
|
||||
|
||||
proc draw() =
|
||||
# draw shiny sphere on gradient background
|
||||
let linerGradient = newPaint(pkGradientLinear)
|
||||
linerGradient.gradientHandlePositions.add(vec2(0, 0))
|
||||
linerGradient.gradientHandlePositions.add(vec2(0, 256))
|
||||
linerGradient.gradientStops.add(
|
||||
ColorStop(color: color(0, 0, 0, 1), position: 0))
|
||||
linerGradient.gradientStops.add(
|
||||
ColorStop(color: color(1, 1, 1, 1), position: 1))
|
||||
ctx.fillStyle = linerGradient
|
||||
ctx.fillRect(0, 0, 256, 256)
|
||||
|
||||
let radialGradient = newPaint(pkGradientRadial)
|
||||
radialGradient.gradientHandlePositions.add(vec2(128, 128))
|
||||
radialGradient.gradientHandlePositions.add(vec2(256, 128))
|
||||
radialGradient.gradientHandlePositions.add(vec2(128, 256))
|
||||
radialGradient.gradientStops.add(
|
||||
ColorStop(color: color(1, 1, 1, 1), position: 0))
|
||||
radialGradient.gradientStops.add(
|
||||
ColorStop(color: color(0, 0, 0, 1), position: 1))
|
||||
ctx.fillStyle = radialGradient
|
||||
ctx.fillCircle(circle(
|
||||
vec2(128.0, 128.0 + sin(float32(frameCount)/10.0) * 20),
|
||||
76.8
|
||||
))
|
||||
|
||||
inc frameCount
|
||||
|
||||
# Draw image pixels onto win32 window.
|
||||
let
|
||||
w = screen.width.int32
|
||||
h = screen.height.int32
|
||||
dc = GetDC(hwnd)
|
||||
var info = BITMAPINFO()
|
||||
info.bmiHeader.biBitCount = 32
|
||||
info.bmiHeader.biWidth = w
|
||||
info.bmiHeader.biHeight = h
|
||||
info.bmiHeader.biPlanes = 1
|
||||
info.bmiHeader.biSize = DWORD sizeof(BITMAPINFOHEADER)
|
||||
info.bmiHeader.biSizeImage = w * h * 4
|
||||
info.bmiHeader.biCompression = BI_RGB
|
||||
var bgrBuffer = newSeq[uint8](screen.data.len * 4)
|
||||
# Convert to BGRA.
|
||||
for i, c in screen.data:
|
||||
bgrBuffer[i*4+0] = c.b
|
||||
bgrBuffer[i*4+1] = c.g
|
||||
bgrBuffer[i*4+2] = c.r
|
||||
discard StretchDIBits(
|
||||
dc,
|
||||
0,
|
||||
h - 1,
|
||||
w,
|
||||
-h,
|
||||
0,
|
||||
0,
|
||||
w,
|
||||
h,
|
||||
bgrBuffer[0].addr,
|
||||
info,
|
||||
DIB_RGB_COLORS,
|
||||
SRCCOPY
|
||||
)
|
||||
discard ReleaseDC(hwnd, dc)
|
||||
|
||||
proc windowProc(hwnd: HWND, message: UINT, wParam: WPARAM,
|
||||
lParam: LPARAM): LRESULT {.stdcall.} =
|
||||
case message
|
||||
of WM_DESTROY:
|
||||
PostQuitMessage(0)
|
||||
running = false
|
||||
return 0
|
||||
else:
|
||||
return DefWindowProc(hwnd, message, wParam, lParam)
|
||||
|
||||
proc main() =
|
||||
var
|
||||
hInstance = GetModuleHandle(nil)
|
||||
appName = "Win32/Pixie"
|
||||
msg: MSG
|
||||
wndclass: WNDCLASS
|
||||
|
||||
wndclass.style = CS_HREDRAW or CS_VREDRAW
|
||||
wndclass.lpfnWndProc = windowProc
|
||||
wndclass.cbClsExtra = 0
|
||||
wndclass.cbWndExtra = 0
|
||||
wndclass.hInstance = hInstance
|
||||
wndclass.hIcon = LoadIcon(0, IDI_APPLICATION)
|
||||
wndclass.hCursor = LoadCursor(0, IDC_ARROW)
|
||||
wndclass.hbrBackground = GetStockObject(WHITE_BRUSH)
|
||||
wndclass.lpszMenuName = nil
|
||||
wndclass.lpszClassName = appName
|
||||
|
||||
if RegisterClass(wndclass) == 0:
|
||||
MessageBox(0, "This program requires Windows NT!", appName, MB_ICONERROR)
|
||||
return
|
||||
|
||||
# Figure out the right size of the window we want.
|
||||
var rect: lean.RECT
|
||||
rect.left = 0
|
||||
rect.top = 0
|
||||
rect.right = w
|
||||
rect.bottom = h
|
||||
AdjustWindowRectEx(cast[LPRECT](rect.addr), WS_OVERLAPPEDWINDOW, 0, 0)
|
||||
|
||||
# Open the window.
|
||||
hwnd = CreateWindow(
|
||||
appName,
|
||||
"Win32/Pixie",
|
||||
WS_OVERLAPPEDWINDOW,
|
||||
CW_USEDEFAULT,
|
||||
CW_USEDEFAULT,
|
||||
rect.right - rect.left,
|
||||
rect.bottom - rect.top,
|
||||
0,
|
||||
0,
|
||||
hInstance,
|
||||
nil
|
||||
)
|
||||
|
||||
ShowWindow(hwnd, SW_SHOW)
|
||||
UpdateWindow(hwnd)
|
||||
|
||||
while running:
|
||||
draw()
|
||||
PeekMessage(msg, 0, 0, 0, PM_REMOVE)
|
||||
TranslateMessage(msg)
|
||||
DispatchMessage(msg)
|
||||
|
||||
main()
|
||||
|
|
@ -1,72 +0,0 @@
|
|||
import pixie, wNim/wApp, wNim/wFrame, wNim/wImage, wNim/wPaintDC
|
||||
|
||||
let
|
||||
w = 256
|
||||
h = 256
|
||||
|
||||
var
|
||||
screen = newImage(w, h)
|
||||
ctx = newContext(screen)
|
||||
frameCount = 0
|
||||
image = Image(w, h)
|
||||
app = App()
|
||||
frame = Frame(title = "wNim/Pixie")
|
||||
|
||||
proc draw() =
|
||||
# draw shiny sphere on gradient background
|
||||
let linerGradient = newPaint(pkGradientLinear)
|
||||
linerGradient.gradientHandlePositions.add(vec2(0, 0))
|
||||
linerGradient.gradientHandlePositions.add(vec2(0, 256))
|
||||
linerGradient.gradientStops.add(
|
||||
ColorStop(color: color(0, 0, 0, 1), position: 0))
|
||||
linerGradient.gradientStops.add(
|
||||
ColorStop(color: color(1, 1, 1, 1), position: 1))
|
||||
ctx.fillStyle = linerGradient
|
||||
ctx.fillRect(0, 0, 256, 256)
|
||||
|
||||
let radialGradient = newPaint(pkGradientRadial)
|
||||
radialGradient.gradientHandlePositions.add(vec2(128, 128))
|
||||
radialGradient.gradientHandlePositions.add(vec2(256, 128))
|
||||
radialGradient.gradientHandlePositions.add(vec2(128, 256))
|
||||
radialGradient.gradientStops.add(
|
||||
ColorStop(color: color(1, 1, 1, 1), position: 0))
|
||||
radialGradient.gradientStops.add(
|
||||
ColorStop(color: color(0, 0, 0, 1), position: 1))
|
||||
ctx.fillStyle = radialGradient
|
||||
ctx.fillCircle(circle(
|
||||
vec2(128.0, 128.0 + sin(float32(frameCount)/10.0) * 20),
|
||||
76.8
|
||||
))
|
||||
inc frameCount
|
||||
|
||||
proc render() =
|
||||
|
||||
proc GdipCreateBitmapFromScan0(width: cint, height: cint, stride: cint,
|
||||
format: cint, scan0: pointer, bitmap: pointer): cint
|
||||
{.stdcall, discardable, dynlib: "gdiplus", importc.}
|
||||
|
||||
proc GdipDisposeImage(image: pointer): cint
|
||||
{.stdcall, discardable, dynlib: "gdiplus", importc.}
|
||||
|
||||
const PixelFormat32bppARGB = 2498570
|
||||
|
||||
GdipDisposeImage(image.mGdipBmp)
|
||||
|
||||
GdipCreateBitmapFromScan0(cint w, cint h, cint w * 4,
|
||||
PixelFormat32bppARGB, ctx.image.data[0].addr, addr image.mGdipBmp)
|
||||
|
||||
frame.clientSize = (w, h)
|
||||
|
||||
frame.startTimer(0.01)
|
||||
|
||||
frame.wEvent_Timer do ():
|
||||
draw()
|
||||
render()
|
||||
frame.refresh(false)
|
||||
|
||||
frame.wEvent_Paint do ():
|
||||
var dc = PaintDC(frame)
|
||||
dc.drawImage(image)
|
||||
|
||||
frame.show()
|
||||
app.mainLoop()
|
||||
|
|
@ -1,120 +0,0 @@
|
|||
## This example show how to have real time pixie using the X11 API.
|
||||
|
||||
import math, pixie, std/os
|
||||
import
|
||||
x11/xlib,
|
||||
x11/xutil,
|
||||
x11/x
|
||||
|
||||
let
|
||||
w: int32 = 256
|
||||
h: int32 = 256
|
||||
|
||||
var
|
||||
screen = newImage(w, h)
|
||||
ctx = newContext(screen)
|
||||
|
||||
var
|
||||
display: PDisplay
|
||||
window: Window
|
||||
deleteMessage: Atom
|
||||
graphicsContext: GC
|
||||
frameCount = 0
|
||||
|
||||
proc render() =
|
||||
## Called every frame by main while loop
|
||||
|
||||
# draw shiny sphere on gradient background
|
||||
let linerGradient = newPaint(pkGradientLinear)
|
||||
linerGradient.gradientHandlePositions.add(vec2(0, 0))
|
||||
linerGradient.gradientHandlePositions.add(vec2(0, 256))
|
||||
linerGradient.gradientStops.add(
|
||||
ColorStop(color: pixie.color(0, 0, 0, 1), position: 0))
|
||||
linerGradient.gradientStops.add(
|
||||
ColorStop(color: pixie.color(1, 1, 1, 1), position: 1))
|
||||
ctx.fillStyle = linerGradient
|
||||
ctx.fillRect(0, 0, 256, 256)
|
||||
let radialGradient = newPaint(pkGradientRadial)
|
||||
radialGradient.gradientHandlePositions.add(vec2(128, 128))
|
||||
radialGradient.gradientHandlePositions.add(vec2(256, 128))
|
||||
radialGradient.gradientHandlePositions.add(vec2(128, 256))
|
||||
radialGradient.gradientStops.add(
|
||||
ColorStop(color: pixie.color(1, 1, 1, 1), position: 0))
|
||||
radialGradient.gradientStops.add(
|
||||
ColorStop(color: pixie.color(0, 0, 0, 1), position: 1))
|
||||
ctx.fillStyle = radialGradient
|
||||
ctx.fillCircle(circle(
|
||||
vec2(128.0, 128.0 + sin(float32(frameCount)/10.0) * 20),
|
||||
76.8
|
||||
))
|
||||
inc frameCount
|
||||
var frameBuffer = addr ctx.image.data[0]
|
||||
let image = XCreateImage(display, DefaultVisualOfScreen(
|
||||
DefaultScreenOfDisplay(display)), 24, ZPixmap, 0, cast[cstring](
|
||||
frameBuffer), w.cuint, h.cuint, 8, w*4)
|
||||
discard XPutImage(display, window, graphicsContext, image, 0, 0, 0, 0, w.cuint, h.cuint)
|
||||
|
||||
const
|
||||
borderWidth = 0
|
||||
eventMask = ButtonPressMask or KeyPressMask or ExposureMask
|
||||
|
||||
proc init() =
|
||||
display = XOpenDisplay(nil)
|
||||
if display == nil:
|
||||
quit "Failed to open display"
|
||||
|
||||
let
|
||||
screen = XDefaultScreen(display)
|
||||
rootWindow = XRootWindow(display, screen)
|
||||
foregroundColor = XBlackPixel(display, screen)
|
||||
backgroundColor = XWhitePixel(display, screen)
|
||||
|
||||
window = XCreateSimpleWindow(display, rootWindow, -1, -1, w.cuint, h.cuint,
|
||||
borderWidth, foregroundColor, backgroundColor)
|
||||
|
||||
|
||||
discard XSetStandardProperties(display, window, "X11 Example", "window", 0,
|
||||
nil, 0, nil)
|
||||
|
||||
discard XSelectInput(display, window, eventMask)
|
||||
discard XMapWindow(display, window)
|
||||
|
||||
deleteMessage = XInternAtom(display, "WM_DELETE_WINDOW", false.XBool)
|
||||
discard XSetWMProtocols(display, window, deleteMessage.addr, 1)
|
||||
|
||||
graphicsContext = XDefaultGC(display, screen)
|
||||
|
||||
|
||||
proc mainLoop() =
|
||||
## Process events until the quit event is received
|
||||
var event: XEvent
|
||||
var exposed: bool = false
|
||||
while true:
|
||||
if exposed: render()
|
||||
if XPending(display) > 0:
|
||||
discard XNextEvent(display, event.addr)
|
||||
case event.theType
|
||||
of Expose:
|
||||
render()
|
||||
exposed = true
|
||||
of ClientMessage:
|
||||
if cast[Atom](event.xclient.data.l[0]) == deleteMessage:
|
||||
break
|
||||
of KeyPress:
|
||||
let key = XLookupKeysym(cast[PXKeyEvent](event.addr), 0)
|
||||
if key != 0:
|
||||
echo "Key ", key, " pressed"
|
||||
of ButtonPressMask:
|
||||
echo "Mouse button ", event.xbutton.button, " pressed at ",
|
||||
event.xbutton.x, ",", event.xbutton.y
|
||||
else:
|
||||
discard
|
||||
sleep 14
|
||||
|
||||
proc main() =
|
||||
init()
|
||||
mainLoop()
|
||||
discard XDestroyWindow(display, window)
|
||||
discard XCloseDisplay(display)
|
||||
|
||||
main()
|
||||
Loading…
Reference in a new issue