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Warning! This version of documentation is OUTDATED, as it describes an older SDK version! Please switch to the documentation for the latest SDK version.
Warning! This version of documentation describes an old SDK version which is no longer supported! Please upgrade to the latest SDK version.

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(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));

	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.

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 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 ( ) const#

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 ( ) 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: 2021-04-29
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