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Unigine::DecalProj Class

Header: #include <UnigineDecals.h>
Inherits from: 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 postUpdate();
	virtual int updatePhysics();
	
	virtual int shutdown();
	
	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();
	decal_proj->setRadius(10.0f);
	decal_proj->setFov(60.0f);
	decal_proj->setAspect(1.0f);

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

	return 1;
}

DecalProj Class

Members


static DecalProjPtr create ( ) #

Constructor. Creates a new projected decal with default parameters.

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 ( ) const#

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 ( ) const#

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 ( ) const#

Returns the projection matrix.

Return value

The projection matrix of the decal.

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 ( ) const#

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

Return value

The distance to the near clipping plane, in units.

static int type ( ) #

Returns the type of the node.

Return value

Decal type identifier.
Last update: 2022-02-18
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