CAST II Game Engine

	Name	Description
	`ClearSettings`	Determines what and when should be cleared
	`ClipPlanes`	User-defined clip planes
	`ColorFormat`	Current rendering color format. Updated by renderer
	`DefaultCullMode`	Default cull mode for the camera
	`DefaultFillMode`	Default fill mode for the camera
	`DepthFormat`	Current rendering depth format. Updated by renderer
	`DepthRenderTarget`	Determines if a depth-stencil surface instead of color surface should be used when the camera applied as a texture
	`FInvViewMatrix`	Inverse view matrix
	`FProjMatrix`	Projection matrix
	`FrameSkip`	Determines how many frames should be skipped between render target texture updates
	`FRenderHeight`	Current render height
	`FRenderWidth`	Current render width
	`FTotalMatrix`	View * projection matrix
	`FViewMatrix`	View matrix
	`GroupMask`	Determines which passes can be visible through the camera
	`RenderTargetHeight`	Height of a render target texture used if the camera will be used as a texture
	`RenderTargetIndex`	private
	`RenderTargetWidth`	Width of a render target texture used if the camera will be used as a texture

Methods

Overview

	`constructor Create(AManager: TItemsManager); override;`
	`destructor Destroy; override;`
	`procedure AddProperties(const Result: Props.TProperties); override;`
	`procedure ComputeViewMatrix; virtual;`
	`function GetPickRay(ScreenX, ScreenY: Single): TVector3s; virtual;`
	`function GetPickRayInWorld(ScreenX, ScreenY: Single): TVector3s; virtual;`
	`procedure InitProjMatrix(AZNear, AZFar, AHFoV, AAspectRatio: Single); virtual;`
	`procedure InvalidateTransform; override;`
	`function IsSpehereVisible(const Center: TVector3s; Radius: Single): TFrustumCheckResult;`
	`procedure Move(XD, YD, ZD: Single); virtual;`
	`procedure OnApply(const OldCamera: TCamera); virtual;`
	`function Project(const Vec: TVector3s): TVector4s;`
	`procedure Rotate(XA, YA, ZA: Single); virtual;`
	`procedure SetClearState(AClearFlags: TClearFlagsSet; AClearColor: BaseTypes.TColor; AClearZ: Single; AClearStencil: Cardinal); virtual;`
	`procedure SetProperties(Properties: Props.TProperties); override;`
	`procedure SetScreenDimensions(Width, Height: Integer);`

Description

constructor Create(AManager: TItemsManager); override;

destructor Destroy; override;

procedure AddProperties(const Result: Props.TProperties); override;

This procedure is called (by editor for example) to retrieve a list of item's properties and their values. Any TItem descendant class should override this method in order to add its own properties.

procedure ComputeViewMatrix; virtual;

function GetPickRay(ScreenX, ScreenY: Single): TVector3s; virtual;

Returns not normalized direction of a ray in view space which starts from the camera and passes through the given point on screen

function GetPickRayInWorld(ScreenX, ScreenY: Single): TVector3s; virtual;

Returns not normalized direction of a ray in world space which starts from the camera and passes through the given point on screen

procedure InitProjMatrix(AZNear, AZFar, AHFoV, AAspectRatio: Single); virtual;

Sets up the camera's projection matrix with the given near and far Z planes, horizontal field of view and aspect ratio

procedure InvalidateTransform; override;

Calling this method will tell the engine that FTransform became invalid and should be recomputed before next use

function IsSpehereVisible(const Center: TVector3s; Radius: Single): TFrustumCheckResult;

Performs a frustrum visibility check against a sphere with the given center and radius

procedure Move(XD, YD, ZD: Single); virtual;

Moves the camera by the specified distance in camera space

procedure OnApply(const OldCamera: TCamera); virtual;

Renderer calls this event right before the camera apply

function Project(const Vec: TVector3s): TVector4s;

Returns the given vector after projection with the camera

procedure Rotate(XA, YA, ZA: Single); virtual;

Rotates the camera by the specified angles

procedure SetClearState(AClearFlags: TClearFlagsSet; AClearColor: BaseTypes.TColor; AClearZ: Single; AClearStencil: Cardinal); virtual;

Sets the ClearSettings

procedure SetProperties(Properties: Props.TProperties); override;

This procedure is called (by editor for example) to set values of item's properties. Any TItem descendant class should override this method to allow its own properties to be set.

procedure SetScreenDimensions(Width, Height: Integer);

Sets render dimensions and recalculates projection matrix. Normally called by renderer when render window size changes.

Properties

Overview

	`property AspectRatio: Single;`
	`property CurrentAspectRatio: Single;`
	`property HFoV: Single;`
	`property InvViewMatrix: TMatrix4s;`
	`property LookDir: TVector3s;`
	`property ProjMatrix: TMatrix4s;`
	`property RenderHeight: Integer;`
	`property RenderWidth: Integer;`
	`property RightDir: TVector3s;`
	`property RTColorFormat: Integer;`
	`property RTDepthFormat: Integer;`
	`property TotalMatrix: TMatrix4s;`
	`property UpDir: TVector3s;`
	`property ViewMatrix: TMatrix4s;`
	`property ViewOrigin: TVector3s;`
	`property ZFar: Single;`
	`property ZNear: Single;`