Terrain Class Reference

Terrain Defines a Terrain that is capable of rendering large landscapes from 2D heightmap images. More...

#include <Terrain.h>

Inherits Node.

Classes
struct	DetailMap
	DetailMap this struct maintain a detail map data ,including source file ,detail size. More...
struct	TerrainData
	TerrainData This TerrainData struct warp all parameter that Terrain need to create. More...
struct	Triangle
	Triangle. More...

Public Types
enum class	CrackFixedType
	the crack fix type. More...

Public Member Functions
void	setLightMap (std::string_view fileName)
	set light map texture
void	setLightDir (const Vec3 &lightDir)
	set directional light for the terrain
bool	initProperties ()
	initialize all Properties which terrain need
bool	initHeightMap (std::string_view heightMap)
	initialize heightMap data
bool	initTextures ()
	initialize alphaMap ,detailMaps textures
float	getHeight (float x, float z, Vec3 *normal=nullptr) const
	get specified position's height mapping to the terrain,use bi-linear interpolation method
float	getHeight (const Vec2 &pos, Vec3 *normal=nullptr) const
	get specified position's height mapping to the terrain,use bi-linear interpolation method
Vec3	getNormal (int pixelX, int pixelY) const
	get the normal of the specified position in terrain
float	getImageHeight (int pixelX, int pixelY) const
	get height from the raw height filed
void	setDrawWire (bool boolValue)
	show the wireline instead of the surface,Debug Use only.
void	setLODDistance (float lod1, float lod2, float lod3)
	Set threshold distance of each LOD level,must equal or greater than the chunk size @Note when invoke initHeightMap, the LOD distance will be automatic calculated.
void	setIsEnableFrustumCull (bool boolValue)
	Switch frustum Culling Flag @Note frustum culling will remarkable improve your terrain rendering performance.
void	setAlphaMap (ax::Texture2D *newAlphaMapTexture)
	set the alpha map
void	setDetailMap (unsigned int index, DetailMap detailMap)
	set the Detail Map
virtual void	draw (ax::Renderer *renderer, const ax::Mat4 &transform, uint32_t flags) override
	Override this method to draw your own node.
Vec3	getIntersectionPoint (const Ray &ray) const
	Ray-Terrain intersection.
bool	getIntersectionPoint (const Ray &ray, Vec3 &intersectionPoint) const
	Ray-Terrain intersection.
void	setMaxDetailMapAmount (int maxValue)
	set the MaxDetailAmount.
Vec2	convertToTerrainSpace (const Vec2 &worldSpace) const
	Convert a world Space position (X,Z) to terrain space position (X,Z)
void	resetHeightMap (std::string_view heightMap)
	reset the heightmap data.
float	getMinHeight ()
	get the terrain's minimal height.
float	getMaxHeight ()
	get the terrain's maximal height.
AABB	getAABB ()
	get the terrain's AABB(in world space)
void	setSkirtHeightRatio (float ratio)
	set the skirt height ratio
QuadTree *	getQuadTree ()
	get the terrain's quad tree which is also the root node.
Vec2	getTerrainSize () const
	get the terrain's size
std::vector< float >	getHeightData () const
	get the terrain's height data
Public Member Functions inherited from Node
virtual bool	isRunning () const
	Returns whether or not the node is "running".
void	scheduleUpdateWithPriorityLua (int handler, int priority)
	Schedules for lua script.
virtual void	cleanup ()
	Stops all running actions and schedulers.
virtual void	visit (Renderer *renderer, const Mat4 &parentTransform, uint32_t parentFlags)
	Visits this node's children and draw them recursively.
virtual Scene *	getScene () const
	Returns the Scene that contains the Node.
virtual Rect	getBoundingBox () const
	Returns an AABB (axis-aligned bounding-box) in its parent's coordinate system.
virtual void	setEventDispatcher (EventDispatcher *dispatcher)
	Set event dispatcher for scene.
virtual EventDispatcher *	getEventDispatcher () const
	Get the event dispatcher of scene.
virtual uint8_t	getOpacity () const
	Return the node's opacity.
virtual uint8_t	getDisplayedOpacity () const
	Return the node's display opacity.
virtual void	setOpacity (uint8_t opacity)
	Change node opacity.
virtual void	updateDisplayedOpacity (uint8_t parentOpacity)
	Update the displayed opacity of node with it's parent opacity;.
virtual bool	isCascadeOpacityEnabled () const
	Whether cascadeOpacity is enabled or not.
virtual void	setCascadeOpacityEnabled (bool cascadeOpacityEnabled)
	Change node's cascadeOpacity property.
virtual const Color3B &	getColor () const
	Query node's color value.
virtual const Color3B &	getDisplayedColor () const
	Query node's displayed color.
virtual void	setColor (const Color3B &color)
	Change the color of node.
virtual void	updateDisplayedColor (const Color3B &parentColor)
	Update node's displayed color with its parent color.
virtual bool	isCascadeColorEnabled () const
	Query whether cascadeColor is enabled or not.
virtual void	setCascadeColorEnabled (bool cascadeColorEnabled)
	If you want node's color affect the children node's color, then set it to true.
virtual void	setOpacityModifyRGB (bool value)
	If you want the opacity affect the color property, then set to true.
virtual bool	isOpacityModifyRGB () const
	If node opacity will modify the RGB color value, then you should override this method and return true.
void	setOnEnterCallback (const std::function< void()> &callback)
	Set the callback of event onEnter.
const std::function< void()> &	getOnEnterCallback () const
	Get the callback of event onEnter.
void	setOnExitCallback (const std::function< void()> &callback)
	Set the callback of event onExit.
const std::function< void()> &	getOnExitCallback () const
	Get the callback of event onExit.
void	setOnEnterTransitionDidFinishCallback (const std::function< void()> &callback)
	Set the callback of event EnterTransitionDidFinish.
const std::function< void()> &	getOnEnterTransitionDidFinishCallback () const
	Get the callback of event EnterTransitionDidFinish.
void	setOnExitTransitionDidStartCallback (const std::function< void()> &callback)
	Set the callback of event ExitTransitionDidStart.
const std::function< void()> &	getOnExitTransitionDidStartCallback () const
	Get the callback of event ExitTransitionDidStart.
unsigned short	getCameraMask () const
	get & set camera mask, the node is visible by the camera whose camera flag & node's camera mask is true
virtual void	setCameraMask (unsigned short mask, bool applyChildren=true)
	Modify the camera mask for current node.
void	applyMaskOnEnter (bool applyChildren)
	Should addChild() make the child follow it's parent's mask?
virtual bool	setProgramState (backend::ProgramState *programState, bool ownPS=false)
	Sets ProgramState with retain.
backend::ProgramState *	setProgramStateByProgramId (uint64_t progId)
	Sets ProgramState by programId.
virtual void	setLocalZOrder (int localZOrder)
	LocalZOrder is the 'key' used to sort the node relative to its siblings.
void	updateOrderOfArrival ()
	!
virtual int	getLocalZOrder () const
	Gets the local Z order of this node.
virtual void	setGlobalZOrder (float globalZOrder)
	Defines the order in which the nodes are renderer.
virtual float	getGlobalZOrder () const
	Returns the Node's Global Z Order.
virtual void	setScaleX (float scaleX)
	Sets the scale (x) of the node.
virtual float	getScaleX () const
	Returns the scale factor on X axis of this node.
virtual void	setScaleY (float scaleY)
	Sets the scale (y) of the node.
virtual float	getScaleY () const
	Returns the scale factor on Y axis of this node.
virtual void	setScaleZ (float scaleZ)
	Changes the scale factor on Z axis of this node.
virtual float	getScaleZ () const
	Returns the scale factor on Z axis of this node.
virtual void	setScale (float scale)
	Sets the scale (x,y,z) of the node.
virtual float	getScale () const
	Gets the scale factor of the node, when X and Y have the same scale factor.
virtual void	setScale (float scaleX, float scaleY)
	Sets the scale (x,y) of the node.
virtual void	setPosition (const Vec2 &position)
	Sets the position (x,y) of the node in its parent's coordinate system.
virtual void	setPositionNormalized (const Vec2 &position)
	Sets the position (x,y) using values between 0 and 1.
virtual const Vec2 &	getPosition () const
	Gets the position (x,y) of the node in its parent's coordinate system.
virtual const Vec2 &	getPositionNormalized () const
	Returns the normalized position.
virtual void	setPosition (float x, float y)
	Sets the position (x,y) of the node in its parent's coordinate system.
virtual void	getPosition (float *x, float *y) const
	Gets position in a more efficient way, returns two number instead of a Vec2 object.
virtual void	setPositionX (float x)
	Gets/Sets x or y coordinate individually for position.
virtual float	getPositionX () const
	Gets the x coordinate of the node in its parent's coordinate system.
virtual void	setPositionY (float y)
	Sets the y coordinate of the node in its parent's coordinate system.
virtual float	getPositionY () const
	Gets the y coordinate of the node in its parent's coordinate system.
virtual void	setPosition3D (const Vec3 &position)
	Sets the position (X, Y, and Z) in its parent's coordinate system.
virtual Vec3	getPosition3D () const
	Returns the position (X,Y,Z) in its parent's coordinate system.
virtual void	setPositionZ (float positionZ)
	Sets the 'z' coordinate in the position.
virtual float	getPositionZ () const
	Gets position Z coordinate of this node.
virtual void	setSkewX (float skewX)
	Changes the X skew angle of the node in degrees.
virtual float	getSkewX () const
	Returns the X skew angle of the node in degrees.
virtual void	setSkewY (float skewY)
	Changes the Y skew angle of the node in degrees.
virtual float	getSkewY () const
	Returns the Y skew angle of the node in degrees.
virtual void	setAnchorPoint (const Vec2 &anchorPoint)
	Sets the anchor point in percent.
virtual const Vec2 &	getAnchorPoint () const
	Returns the anchor point in percent.
virtual const Vec2 &	getAnchorPointInPoints () const
	Returns the anchorPoint in absolute pixels.
virtual void	setContentSize (const Vec2 &contentSize)
	Sets the untransformed size of the node.
virtual const Vec2 &	getContentSize () const
	Returns the untransformed size of the node.
virtual bool	hitTest (const Vec2 &worldPoint) const
	The basic node hit test, since axmol-1.0.
virtual void	setVisible (bool visible)
	Sets whether the node is visible.
virtual bool	isVisible () const
	Determines if the node is visible.
virtual void	setRotation (float rotation)
	Sets the rotation (angle) of the node in degrees.
virtual float	getRotation () const
	Returns the rotation of the node in degrees.
virtual void	setRotation3D (const Vec3 &rotation)
	Sets the rotation (X,Y,Z) in degrees.
virtual Vec3	getRotation3D () const
	Returns the rotation (X,Y,Z) in degrees.
virtual void	setRotationQuat (const Quaternion &quat)
	Set rotation by quaternion.
virtual Quaternion	getRotationQuat () const
	Return the rotation by quaternion, Note that when _rotationZ_X == _rotationZ_Y, the returned quaternion equals to RotationZ_X * RotationY * RotationX, it equals to RotationY * RotationX otherwise.
virtual void	setRotationSkewX (float rotationX)
	Sets the X rotation (angle) of the node in degrees which performs a horizontal rotational skew.
virtual float	getRotationSkewX () const
	Gets the X rotation (angle) of the node in degrees which performs a horizontal rotation skew.
virtual void	setRotationSkewY (float rotationY)
	Sets the Y rotation (angle) of the node in degrees which performs a vertical rotational skew.
virtual float	getRotationSkewY () const
	Gets the Y rotation (angle) of the node in degrees which performs a vertical rotational skew.
virtual void	setIgnoreAnchorPointForPosition (bool ignore)
	Sets whether the anchor point will be (0,0) when you position this node.
virtual bool	isIgnoreAnchorPointForPosition () const
	Gets whether the anchor point will be (0,0) when you position this node.
virtual int	getTag () const
	Returns a tag that is used to identify the node easily.
virtual void	setTag (int tag)
	Changes the tag that is used to identify the node easily.
virtual std::string_view	getName () const
	Returns a string that is used to identify the node.
virtual void	setName (std::string_view name)
	Changes the name that is used to identify the node easily.
virtual void *	getUserData ()
	Returns a custom user data pointer.
virtual const void *	getUserData () const
	@lua NA
virtual void	setUserData (void *userData)
	Sets a custom user data pointer.
virtual Object *	getUserObject ()
	Returns a user assigned Object.
virtual const Object *	getUserObject () const
	@lua NA
virtual void	setUserObject (Object *userObject)
	Returns a user assigned Object.
virtual void	onEnterTransitionDidFinish ()
	Event callback that is invoked when the Node enters in the 'stage'.
virtual void	onExit ()
	Event callback that is invoked every time the Node leaves the 'stage'.
virtual void	onExitTransitionDidStart ()
	Event callback that is called every time the Node leaves the 'stage'.
virtual void	setActionManager (ActionManager *actionManager)
	Sets the ActionManager object that is used by all actions.
virtual ActionManager *	getActionManager ()
	Gets the ActionManager object that is used by all actions.
virtual Action *	runAction (Action *action)
	Executes an action, and returns the action that is executed.
void	stopAllActions ()
	Stops and removes all actions from the running action list .
void	stopAction (Action *action)
	Stops and removes an action from the running action list.
void	stopActionByTag (int tag)
	Removes an action from the running action list by its tag.
void	stopAllActionsByTag (int tag)
	Removes all actions from the running action list by its tag.
void	stopActionsByFlags (unsigned int flags)
	Removes all actions from the running action list by its flags.
Action *	getActionByTag (int tag)
	Gets an action from the running action list by its tag.
ssize_t	getNumberOfRunningActions () const
	Returns the numbers of actions that are running plus the ones that are schedule to run (actions in actionsToAdd and actions arrays).
ssize_t	getNumberOfRunningActionsByTag (int tag) const
	Returns the numbers of actions that are running plus the ones that are schedule to run (actions in actionsToAdd and actions arrays) with a specific tag.
virtual void	setScheduler (Scheduler *scheduler)
	Sets a Scheduler object that is used to schedule all "updates" and timers.
virtual Scheduler *	getScheduler ()
	Gets a Scheduler object.
bool	isScheduled (SEL_SCHEDULE selector) const
	Checks whether a selector is scheduled.
bool	isScheduled (std::string_view key) const
	Checks whether a lambda function is scheduled.
void	scheduleUpdate ()
	Schedules the "update" method.
void	scheduleUpdateWithPriority (int priority)
	Schedules the "update" method with a custom priority.
void	schedule (SEL_SCHEDULE selector, float interval, unsigned int repeat, float delay)
	Schedules a custom selector.
void	schedule (SEL_SCHEDULE selector, float interval)
	Schedules a custom selector with an interval time in seconds.
void	scheduleOnce (SEL_SCHEDULE selector, float delay)
	Schedules a selector that runs only once, with a delay of 0 or larger.
void	scheduleOnce (const std::function< void(float)> &callback, float delay, std::string_view key)
	Schedules a lambda function that runs only once, with a delay of 0 or larger.
void	schedule (SEL_SCHEDULE selector)
	Schedules a custom selector, the scheduled selector will be ticked every frame.
void	schedule (const std::function< void(float)> &callback, std::string_view key)
	Schedules a lambda function.
void	schedule (const std::function< void(float)> &callback, float interval, std::string_view key)
	Schedules a lambda function.
void	schedule (const std::function< void(float)> &callback, float interval, unsigned int repeat, float delay, std::string_view key)
	Schedules a lambda function.
void	unschedule (SEL_SCHEDULE selector)
	Unschedules a custom selector.
void	unschedule (std::string_view key)
	Unschedules a lambda function.
void	unscheduleAllCallbacks ()
	Unschedule all scheduled selectors and lambda functions: custom selectors, and the 'update' selector and lambda functions.
virtual void	resume ()
	Resumes all scheduled selectors, actions and event listeners.
virtual void	pause ()
	Pauses all scheduled selectors, actions and event listeners.
virtual void	update (float delta)
	Update method will be called automatically every frame if "scheduleUpdate" is called, and the node is "live".
virtual void	updateTransform ()
	Calls children's updateTransform() method recursively.
virtual const Mat4 &	getNodeToParentTransform () const
	Returns the matrix that transform the node's (local) space coordinates into the parent's space coordinates.
virtual Mat4	getNodeToParentTransform (Node *ancestor) const
	Returns the matrix that transform the node's (local) space coordinates into the parent's space coordinates.
virtual AffineTransform	getNodeToParentAffineTransform (Node *ancestor) const
	Returns the affine transform matrix that transform the node's (local) space coordinates into the parent's space coordinates.
virtual void	setNodeToParentTransform (const Mat4 &transform)
	Sets the transformation matrix manually.
virtual const Mat4 &	getParentToNodeTransform () const
	Returns the matrix that transform parent's space coordinates to the node's (local) space coordinates.
virtual Mat4	getNodeToWorldTransform () const
	Returns the world affine transform matrix.
virtual Mat4	getWorldToNodeTransform () const
	Returns the inverse world affine transform matrix.
Vec2	convertToNodeSpace (const Vec2 &worldPoint) const
	Converts a Vec2 to node (local) space coordinates.
Vec2	convertToWorldSpace (const Vec2 &nodePoint) const
	Converts a Vec2 to world space coordinates.
Vec2	convertToNodeSpaceAR (const Vec2 &worldPoint) const
	Converts a Vec2 to node (local) space coordinates.
Vec2	convertToWorldSpaceAR (const Vec2 &nodePoint) const
	Converts a local Vec2 to world space coordinates.The result is in Points.
Vec2	convertTouchToNodeSpace (Touch *touch) const
	convenience methods which take a Touch instead of Vec2.
Vec2	convertTouchToNodeSpaceAR (Touch *touch) const
	converts a Touch (world coordinates) into a local coordinate.
Vec2	getWorldPosition () const
	Gets position of node in world space.
void	setWorldPosition (const Vec2 &position)
	Sets position of node in world space.
void	setAdditionalTransform (const Mat4 *additionalTransform)
	Sets an additional transform matrix to the node.
Component *	getComponent (std::string_view name)
	Gets a component by its name.
virtual bool	addComponent (Component *component)
	Adds a component.
virtual bool	removeComponent (std::string_view name)
	Removes a component by its name.
virtual bool	removeComponent (Component *component)
	Removes a component by its pointer.
virtual void	removeAllComponents ()
	Removes all components.
virtual std::string	getDescription () const
	Gets the description string.
virtual void	addChild (Node *child)
	Adds a child to the container with z-order as 0.
virtual void	addChild (Node *child, int localZOrder)
	Adds a child to the container with a local z-order.
virtual void	addChild (Node *child, int localZOrder, int tag)
	Adds a child to the container with z order and tag.
virtual void	addChild (Node *child, int localZOrder, std::string_view name)
	Adds a child to the container with z order and tag.
virtual Node *	getChildByTag (int tag) const
	Gets a child from the container with its tag.
template<typename T>
T	getChildByTag (int tag) const
	Gets a child from the container with its tag that can be cast to Type T.
virtual Node *	getChildByName (std::string_view name) const
	Gets a child from the container with its name.
template<typename T>
T	getChildByName (std::string_view name) const
	Gets a child from the container with its name that can be cast to Type T.
virtual void	enumerateChildren (std::string_view name, std::function< bool(Node *node)> callback) const
	Search the children of the receiving node to perform processing for nodes which share a name.
virtual Vector< Node * > &	getChildren ()
	Returns the array of the node's children.
virtual ssize_t	getChildrenCount () const
	Returns the amount of children.
virtual void	setParent (Node *parent)
	Sets the parent node.
virtual Node *	getParent ()
	Returns a pointer to the parent node.
virtual void	removeFromParent ()
	Removes this node itself from its parent node with a cleanup.
virtual void	removeFromParentAndCleanup (bool cleanup)
	Removes this node itself from its parent node.
virtual void	removeChild (Node *child, bool cleanup=true)
	Removes a child from the container.
virtual void	removeChildByTag (int tag, bool cleanup=true)
	Removes a child from the container by tag value.
virtual void	removeChildByName (std::string_view name, bool cleanup=true)
	Removes a child from the container by tag value.
virtual void	removeAllChildren ()
	Removes all children from the container with a cleanup.
virtual void	removeAllChildrenWithCleanup (bool cleanup)
	Removes all children from the container, and do a cleanup to all running actions depending on the cleanup parameter.
virtual void	reorderChild (Node *child, int localZOrder)
	Reorders a child according to a new z value.
virtual void	sortAllChildren ()
	Sorts the children array once before drawing, instead of every time when a child is added or reordered.
Public Member Functions inherited from Object
void	retain ()
	Retains the ownership.
void	release ()
	Releases the ownership immediately.
Object *	autorelease ()
	Releases the ownership sometime soon automatically.
unsigned int	getReferenceCount () const
	Returns the Object's current reference count.
virtual	~Object ()
	Destructor.

Static Public Member Functions
static Terrain *	create (TerrainData &parameter, CrackFixedType fixedType=CrackFixedType::INCREASE_LOWER)
	create entry
static Node *	create ()
	Allocates and initializes a node.
static int	getAttachedNodeCount ()
	Gets count of nodes those are attached to scene graph.
template<typename _T>
static void	sortNodes (ax::Vector< _T * > &nodes)
	Sorts helper function.

Additional Inherited Members
Public Attributes inherited from Object
unsigned int	_ID
	object id, ScriptSupport need public _ID
int	_luaID
	Lua reference id.
Static Public Attributes inherited from Node
static const int	INVALID_TAG = -1
	Default tag used for all the nodes.

Detailed Description

Terrain Defines a Terrain that is capable of rendering large landscapes from 2D heightmap images.

Terrains can be constructed from several different internal formats heightmap sources:

1. RGB888
2. RGBA8888
3. Luminance(gray-scale)8

Terrain use TerrainData struct to initialize.the TerrainData struct warp all parameters that Terrain initialization need. TerrainData provide several handy constructor for users

Surface detail is provided via texture splatting, where multiple Detail texture layers can be added along with alpha map to define how different Detail texture blend with each other. These DetailTexture can be defined in TerrainData. The number of supported Detail texture is Four. although typically 2-3 levels is sufficient. For simple usage ,surface detail also is provided via simple Texture.

Internally, Terrain is divide into smaller, more manageable chunks, which can be culled separately for more efficient rendering. The size of the terrain chunks can be controlled via the chunkSize property in TerrainData.

Chunks are managed under the QuadTree.As DE FACTO terminal Node of the QuadTree; let us cull chunks efficiently to reduce drawCall amount And reduce the VBOs'Size that pass to the GPU.

Level of detail (LOD) is supported using a technique that is similar to texture mipmapping – called GeoMapping. A distance-to-camera based test used to decide the appropriate LOD for a terrain chunk. The number of LOD levels is 0 by default (which means only the base level is used),the maximum number of LOD levels is 4. Of course ,you can hack the value individually.

Finally, when LOD is enabled, cracks can begin to appear between terrain Chunks of different LOD levels. An acceptable solution might be to simply reduce the lower LOD(high detail,smooth) chunks border, And let the higher LOD(rough) chunks to seamlessly connect it.

We can use ray-terrain intersection to pick a point of the terrain; Also we can get an arbitrary point of the terrain's height and normal vector for convenience .

Member Enumeration Documentation

CrackFixedType

enum class CrackFixedType

strong

the crack fix type.

use to fix the gaps between different LOD chunks

Member Function Documentation

setLightDir()

void setLightDir

(

const Vec3 &

lightDir

)

set directional light for the terrain

Parameters

lightDir

The direction of directional light, Note that lightDir is in the terrain's local space. Most of the time terrain is placed at (0,0,0) and without rotation, so lightDir is also in the world space.

getHeight() [1/2]

float getHeight	(	float	x,
		float	z,
		Vec3 *	normal = nullptr ) const

get specified position's height mapping to the terrain,use bi-linear interpolation method

Parameters

x	the X position
z	the Z position
normal	the specified position's normal vector in terrain . if this argument is NULL or nullptr,Normal calculation shall be skip.

Returns

the height value of the specified position of the terrain, if the (X,Z) position is out of the terrain bounds,it shall return 0;

getHeight() [2/2]

float getHeight	(	const Vec2 &	pos,
		Vec3 *	normal = nullptr ) const

get specified position's height mapping to the terrain,use bi-linear interpolation method

Parameters

pos	the position (X,Z)
normal	the specified position's normal vector in terrain . if this argument is NULL or nullptr,Normal calculation shall be skip.

Returns

the height value of the specified position of the terrain, if the (X,Z) position is out of the terrain bounds,it shall return 0;

getNormal()

Vec3 getNormal	(	int	pixelX,
		int	pixelY ) const

get the normal of the specified position in terrain

Returns

the normal vector of the specified position of the terrain.

Note

the fast normal calculation may not get precise normal vector.

setDrawWire()

void setDrawWire

(

bool

boolValue

)

show the wireline instead of the surface,Debug Use only.

@Note only support desktop platform

draw()

virtual void draw ( ax::Renderer * renderer, const ax::Mat4 & transform, uint32_t flags )

overridevirtual

Override this method to draw your own node.

The following GL states will be enabled by default:

• glEnableClientState(GL_VERTEX_ARRAY);
• glEnableClientState(GL_COLOR_ARRAY);
• glEnableClientState(GL_TEXTURE_COORD_ARRAY);
• glEnable(GL_TEXTURE_2D); AND YOU SHOULD NOT DISABLE THEM AFTER DRAWING YOUR NODE But if you enable any other GL state, you should disable it after drawing your node.

Parameters

renderer	A given renderer.
transform	A transform matrix.
flags	Renderer flag.

Reimplemented from Node.

getIntersectionPoint() [1/2]

Vec3 getIntersectionPoint

(

const Ray &

ray

)

const

Ray-Terrain intersection.

Returns

the intersection point

getIntersectionPoint() [2/2]

bool getIntersectionPoint	(	const Ray &	ray,
		Vec3 &	intersectionPoint ) const

Ray-Terrain intersection.

Parameters

ray	to hit the terrain
intersectionPoint	hit point if hit

Returns

true if hit, false otherwise

---

The documentation for this class was generated from the following file:

• Terrain.h