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Difference between revisions of "UE3:Canvas (UDK)"

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Revision as of 05:37, 17 January 2010

UDK Object >> Canvas
Package: 
Engine
This class in other games:
RTNP, U1, UT, U2XMP, UE2Runtime, U2, UT2003, UT2004, UT3
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Canvas: A drawing canvas.

Properties

bCenter

Type: bool

Whether to center the text.

bNoSmooth

Type: bool

Don't bilinear filter.

Canvas

Type: pointer{FCanvas}

Modifiers: native, const


ClipX

Type: float


ClipY

Type: float

Bottom right clipping region.

ColorModulate

Type: Object.Plane


Default value:

Member Value
W 1.0
X 1.0
Y 1.0
Z 1.0

CurX

Type: float


CurY

Type: float

Current position for drawing.

CurYL

Type: float

Largest Y size since DrawText.

DefaultTexture

Type: Texture2D


Default value: Texture2D'EngineResources.WhiteSquareTexture'

DrawColor

Type: Object.Color

Color for drawing.

Default value:

Member Value
A 255
B 127
G 127
R 127

Font

Type: Font

Font for DrawText.

Default value: Font'EngineFonts.SmallFont'

OrgX

Type: float


OrgY

Type: float

Origin for drawing.

SceneView

Type: pointer{FSceneView}

Modifiers: native, const


SizeX

Type: int

Modifiers: const


SizeY

Type: int

Modifiers: const


Structs

CanvasIcon

Modifiers: native

Holds texture information with UV coordinates as well.

Texture Texture 
Source texture
float U 
UV coords
float V 
UV coords
float UL 
UV coords
float VL 
UV coords

DepthFieldGlowInfo

Modifiers: native

info for glow when using depth field rendering

bool bEnableGlow 
whether to turn on the outline glow (depth field fonts only)
Object.LinearColor GlowColor 
base color to use for the glow
Object.Vector2D GlowOuterRadius 
if bEnableGlow, outline glow outer radius (0 to 1, 0.5 is edge of character silhouette)

glow influence will be 0 at GlowOuterRadius.X and 1 at GlowOuterRadius.Y

Object.Vector2D GlowInnerRadius 
if bEnableGlow, outline glow inner radius (0 to 1, 0.5 is edge of character silhouette)

glow influence will be 1 at GlowInnerRadius.X and 0 at GlowInnerRadius.Y

FontRenderInfo

Modifiers: native

information used in font rendering

bool bClipText 
whether to clip text
bool bEnableShadow 
whether to turn on shadowing
DepthFieldGlowInfo GlowInfo 
depth field glow parameters (only usable if font was imported with a depth field)

Functions

Static functions

CreateFontRenderInfo

static final function FontRenderInfo CreateFontRenderInfo (optional bool bClipText, optional bool bEnableShadow, optional Object.LinearColor GlowColor, optional Object.Vector2D GlowOuterRadius, optional Object.Vector2D GlowInnerRadius)

constructor for FontRenderInfo

Native functions

DeProject

native noexport final function DeProject (Object.Vector2D ScreenPos, out Object.Vector WorldOrigin, out Object.Vector WorldDirection)

transforms 2D screen coordinates into a 3D world-space origin and direction

Parameters:

  • ScreenPos - screen coordinates in pixels
  • WorldOrigin - out) - world-space origin vector
  • WorldDirection - out) - world-space direction vector

Draw2DLine

native noexport final function Draw2DLine (float X1, float Y1, float X2, float Y2, Object.Color LineColor)


DrawColorizedTile

native noexport final function DrawColorizedTile (Texture Tex, float XL, float YL, float U, float V, float UL, float VL, Object.LinearColor LColor)


DrawMaterialTile

native noexport final function DrawMaterialTile (MaterialInterface Mat, float XL, float YL, optional float U, optional float V, optional float UL, optional float VL)

Draws the emissive channel of a material to an axis-aligned quad at CurX,CurY.

Parameters:

  • Mat - The material which contains the emissive expression to render.
  • XL - The width of the quad in pixels.
  • YL - The height of the quad in pixels.
  • U - The U coordinate of the quad's upper left corner, in normalized coordinates.
  • V - The V coordinate of the quad's upper left corner, in normalized coordinates.
  • UL - The range of U coordinates which is mapped to the quad.
  • VL - The range of V coordinates which is mapped to the quad.

DrawMaterialTileClipped

native noexport final function DrawMaterialTileClipped (MaterialInterface Mat, float XL, float YL, optional float U, optional float V, optional float UL, optional float VL)


DrawRotatedMaterialTile

native final function DrawRotatedMaterialTile (MaterialInterface Mat, Object.Rotator Rotation, float XL, float YL, optional float U, optional float V, optional float UL, optional float VL, optional float AnchorX, optional float AnchorY)


DrawRotatedTile

native final function DrawRotatedTile (Texture Tex, Object.Rotator Rotation, float XL, float YL, float U, float V, float UL, float VL, optional float AnchorX, optional float AnchorY)


DrawText

native noexport final function DrawText (coerce string Text, optional bool CR, optional float XScale, optional float YScale, optional const out FontRenderInfo RenderInfo)


DrawTextureDoubleLine

native final function DrawTextureDoubleLine (Object.Vector StartPoint, Object.Vector EndPoint, float Perc, float Spacing, float Width, Object.Color LineColor, Object.Color AltLineColor, Texture Tex, float U, float V, float UL, float VL)


DrawTextureLine

native final function DrawTextureLine (Object.Vector StartPoint, Object.Vector EndPoint, float Perc, float Width, Object.Color LineColor, Texture LineTexture, float U, float V, float UL, float VL)


DrawTile

native noexport final function DrawTile (Texture Tex, float XL, float YL, float U, float V, float UL, float VL)


DrawTileClipped

native(468) noexport final function DrawTileClipped (Texture Tex, float XL, float YL, float U, float V, float UL, float VL)


DrawTileStretched

native noexport final function DrawTileStretched (Texture Tex, float XL, float YL, float U, float V, float UL, float VL, Object.LinearColor LColor, optional bool bStretchHorizontally, optional bool bStretchVertically, optional float ScalingFactor)


PopTransform

native noexport final function PopTransform ()

Pops the topmost matrix from the canvas transform stack.

Project

native noexport final function Object.Vector Project (Object.Vector location)

Convert a 3D vector to a 2D screen coords.

PushTranslationMatrix

native noexport final function PushTranslationMatrix (Object.Vector TranslationVector)

Pushes a translation matrix onto the canvas.

Parameters:

  • TranslationVector - Translation vector to use to create the translation matrix.

SetDrawColor

native final function SetDrawColor (byte R, byte G, byte B, optional byte A)


SetPos

native final function SetPos (float PosX, float PosY)


StrLen

native noexport final function StrLen (coerce string String, out float XL, out float YL)


TextSize

native noexport final function TextSize (coerce string String, out float XL, out float YL)


Events

Reset

event Reset (optional bool bKeepOrigin)


Other instance functions

DrawBox

final simulated function DrawBox (float width, float height)


DrawDebugGraph

function DrawDebugGraph (coerce string Title, float ValueX, float ValueY, float UL_X, float UL_Y, float W, float H, Object.Vector2D RangeX, Object.Vector2D RangeY)

Draws a graph comparing 2 variables. Useful for visual debugging and tweaking.

Parameters:

  • Title - Label to draw on the graph, or "" for none
  • ValueX - X-axis value of the point to plot
  • ValueY - Y-axis value of the point to plot
  • UL_X - X screen coord of the upper-left corner of the graph
  • UL_Y - Y screen coord of the upper-left corner of the graph
  • W - Width of the graph, in pixels
  • H - Height of the graph, in pixels
  • RangeX - Range of values expressed by the X axis of the graph
  • RangeY - Range of values expressed by the Y axis of the graph

DrawIcon

final function DrawIcon (CanvasIcon Icon, float X, float Y, optional float Scale)

Draw a CanvasIcon at the desired canvas position.

DrawIconSection

final function DrawIconSection (CanvasIcon Icon, float X, float Y, float UStartPct, float VStartPct, float UEndPct, float VEndPct, optional float Scale)

Draw a subsection of a CanvasIcon at the desired canvas position.

DrawRect

final function DrawRect (float RectX, float RectY, optional Texture Tex)


DrawTextCentered

final function DrawTextCentered (coerce string Text, optional bool CR, optional float XScale, optional float YScale, optional const FontRenderInfo RenderInfo)


DrawTextRA

final function DrawTextRA (coerce string Text, optional bool CR)

Draws text right aligned from the current position.

DrawTexture

final function DrawTexture (Texture Tex, float Scale)


MakeIcon

final function CanvasIcon MakeIcon (Texture Texture, optional float U, optional float V, optional float UL, optional float VL)

Fake CanvasIcon constructor.

SetClip

final function SetClip (float X, float Y)


SetOrigin

final function SetOrigin (float X, float Y)


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