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Unigine::DecalProj Class

Header: #include <UnigineDecals.h>
Inherits: Decal

This class describes how to create and modify projected decals.

See also#

A UnigineScript API sample <UnigineSDK>/data/samples/decals/proj_02

Creating a Projected Decal#

The following code illustrates how to create a projected decal, set its parameters and add the node to UnigineEditor.

Source code (C++)
// AppWorldLogic.h

#include <UnigineLogic.h>
#include <UnigineEditor.h>
#include <UnigineDecals.h>

class AppWorldLogic : public Unigine::WorldLogic {
	
public:
	AppWorldLogic();
	virtual ~AppWorldLogic();
	
	virtual int init();
	
	virtual int update();
	virtual int render();
	virtual int flush();
	
	virtual int shutdown();
	virtual int destroy();
	
	virtual int save(const Unigine::StreamPtr &stream);
	virtual int restore(const Unigine::StreamPtr &stream);

private:
	Unigine::DecalProjPtr decal_proj;
};
Source code (C++)
// AppWorldLogic.cpp

#include "AppWorldLogic.h";

using namespace Unigine;

int AppWorldLogic::init()
{

	// create an proj decal and setting its radius to 10, fov to 60, aspect to 1.0f, material to "decal_base"
	decal_proj = DecalProj::create(10.0f, 60.0f, 1.0f, "decal_base");

	// set the name and position of the decal
	decal_proj->setName("Proj Decal");
	decal_proj->setWorldPosition(Math::Vec3(0.0f, 0.0f, 5.0f));

	// release ownership of its pointer and add the node to UnigineEditor
	decal_proj->release();
	Editor::get()->addNode(decal_proj->getNode());

	return 1;
}

int AppWorldLogic::shutdown() {
	
	// clear pointer
	decal_proj.clear();

	return 1;
}

DecalProj Class

Members


static DecalProjPtr create ( float radius, float fov, float aspect, const char * name )

Constructor. Creates a new projected decal with the given properties.

Arguments

  • float radius - The height of the projection pyramid along the Z axis, in units.
  • float fov - The field of view of the decal's projector, in degrees.
  • float aspect - The aspect ratio of the decal, in units.
  • const char * name - A material of the decal.

Ptr<DecalProj> cast( const Ptr<Decal> & base )

Casts a DecalProj out of the Decal instance.

Arguments

  • const Ptr<Decal> & base - Pointer to Decal.

Return value

Pointer to DecalProj.

Ptr<DecalProj> cast( const Ptr<Node> & node )

Casts a DecalProj out of the Node instance.

Arguments

  • const Ptr<Node> & node - Pointer to Node.

Return value

Pointer to DecalProj.

void setAspect( float aspect )

Sets the new aspect ratio of the decal, in units.

Arguments

  • float aspect - The aspect ratio of the decal, in units. If a negative value is provided, 0 will be used instead.

float getAspect( )

Returns the current aspect ratio of the decal.

Return value

The aspect ratio of the decal, in units.

void setFov( float fov )

Sets a new field of view of the decal's projector.

Arguments

  • float fov - A field of view of the decal's projector, in degrees. The provided value will be clamped in the range [1;90].

float getFov( )

Returns the current field of view of the decal's projector.

Return value

The field of view of the decal's projector, in degrees.

Math::mat4 getProjection( )

Returns the projection matrix.

Return value

The projection matrix of the decal.

void setRadius( float radius )

Sets a new height of the projection pyramid along the Z axis, in units.

Arguments

  • float radius - A height of the projection pyramid along the Z axis, in units. If a too small value is provided, 1E-6 will be used instead.

float getRadius( )

Returns the current height of the projection pyramid along the Z axis, in units.

Return value

The height of the projection pyramid along the Z axis, in units.

void setZNear( float znear )

Sets a distance to the near clipping plane of the decal.

Arguments

  • float znear - A new distance to the near clipping plane, in units. If a negative value is provided, 0 will be used instead.

float getZNear( )

Returns the distance to the near clipping plane of the decal.

Return value

The distance to the near clipping plane, in units.

int type( )

Returns the type of the node.

Return value

Decal type identifier.
Last update: 2019-02-14