Unigine::Decal Class

Decal class is used for base decals operation. To create, modify or get information on special types of the decals, use decal-related classes.

Decal Class

Members

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

Casts a Decal out of the Node instance.

Arguments

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

Return value

Pointer to the Decal.

Ptr<Decal> getDecal()

Returns a decal pointer.

Return value

The decal pointer.

void setFadeTime(float time)

Sets a time period during which the decal will fade away (after its life time exceeds). Fade time is ignored if the decal does not disappear.

Arguments

• float time - Time in seconds.

float getFadeTime()

Returns the time period during which the decal will fade away (after its life time exceeds).

Return value

Time in seconds.

void setInitTime(float time)

Sets a time period during which the decal will be projected.

Arguments

• float time - Time in seconds. If a negative value is provided, the decal will be permanent.

float getInitTime()

Returns the time period of initialization.

Return value

Time in seconds.

void setLifeTime(float time)

Sets a time period during which the decal will be projected. By default the decal will not disappear and setFadeTime() will be ignored.

Arguments

• float time - Time in seconds. If a negative value is provided, the decal will be permanent.

float getLifeTime()

Returns the time period during which the decal will be projected.

Return value

Time in seconds. If a negative value is returned, the decal is permanent.

int setMaterial(const char * name)

Sets a new material for the decal.

Arguments

• const char * name - Name of a new material.

Return value

1 if the material is set successfully; otherwise, 0.

int setMaterial(const Ptr<Material> & mat)

Sets a new material for the decal.

Arguments

• const Ptr<Material> & mat - Smart pointer to the material to be used for the decal.

Return value

1 if the material is set successfully; otherwise, 0.

int setMaterial(const UGUID & guid)

Sets a new material for the decal.

Arguments

• const UGUID & guid - Material GUID.

Return value

1 if the material is set successfully; otherwise, 0.

Ptr<Material> getMaterial()

Returns the material used for the decal.

Return value

Smart pointer to the material used for the decal.

Ptr<Material> getMaterialInherit()

Inherits material for the decal (creates a material instance). Modifications made in a new material instance will not affect the source material.

Return value

Smart pointer to the inherited material.

int isMaterialInherited()

Returns the value indicating if a given material is inherited (instanced). Modifications made in a material instance do not affect the source material.

Return value

1 if the material is inherited successfully; otherwise, 0.

const char * getMaterialName()

Returns the name of a decal material.

Return value

The material name.

void setMaxFadeDistance(float distance)

Updates the maximum fade-out distance, across which the decal smoothly becomes invisible due to the alpha fading. It is counted starting from the maximum visibility distance value.

Arguments

• float distance - A new minimum fade-out distance, in units. If a negative value is provided, 0 will be used instead.

float getMaxFadeDistance()

Returns the maximum fade-out distance, across which the decal smoothly becomes invisible due to the alpha fading. It is counted starting from the maximum visibility distance value.

Return value

The distance value, in units.

void setMaxVisibleDistance(float distance)

Updates the maximum visibility distance, starting at which the decal begins to fade out until becomes completely invisible.

Arguments

• float distance - A new maximum visibility distance, in units. If a negative value is provided, 0 will be used instead.

float getMaxVisibleDistance()

Returns the maximum visibility distance, starting at which the decal begins to fade out until becomes completely invisible.

Return value

The distance value, in units.

void setMinFadeDistance(float distance)

Updates the minimum fade-in distance, across which the decal smoothly becomes visible due to the alpha fading. It is counted starting from the minimum visibility distance value.

Arguments

• float distance - A new minimum fade-in distance, in units. If a negative value is provided, 0 will be used instead.

float getMinFadeDistance()

Returns the minimum fade-in distance, across which the decal smoothly becomes visible due to the alpha fading. It is counted starting from the minimum visibility distance value.

Return value

The distance value, in units.

void setMinVisibleDistance(float distance)

Updates the minimum visibility distance, starting at which the decal begins to fade in and then becomes completely visible.

Arguments

• float distance - A new minimum visibility distance, in units. If a negative value is provided, 0 will be used instead.

float getMinVisibleDistance()

Returns The minimum visibility distance, starting at which the decal begins to fade in and then becomes completely visible.

Return value

The distance value, in units.

void setTexCoord(const Math::vec4 & coord)

Sets texture coordinates for the decal (a texture atlas can be used).

• The first pair of coordinates (x and y) set texture scale by the X and Y axes. For example, by the scale of 2 the texture is repeated twice on one decal.
• The second pair (z and w) set texture offset along the X and Y axes. For example, by the offset of 0.5 along the X axis the texture is repositioned to the right (so that the edge of the texture is rendered in the center).

Arguments

• const Math::vec4 & coord - Texture coordinates for the decal.

Math::vec4 getTexCoord()

Returns the texture coordinates for the decal (a texture atlas can be used).

• The first pair of coordinates (x and y) set texture scale by the X and Y axes. For example, by the scale of 2 the texture is repeated twice on one decal.
• The second pair (z and w) set texture offset along the X and Y axes. For example, by the offset of 0.5 along theX axis the texture is repositioned to the right (so that the edge of the texture is rendered in the center).

Return value

The current texture coordinates for the decal.

void setViewportMask(int mask)

Sets a bit mask for rendering a decal into the viewport. The decal is rendered, if its mask matches the camera viewport mask and the viewport mask of the decal's material.

Arguments

• int mask - An integer value, each bit of which is used to set a mask.

int getViewportMask()

Returns the current bit mask for rendering into the viewport. The decal is rendered, if its mask matches the camera viewport mask and the viewport mask of the decal's material.

Return value

The integer value, each bit of which is used to set a mask.

void setIntersectionMask(int mask)

Sets a new intersection mask for the decal. This mask can be used to cut out areas intersected by the decal from grass, mesh clutter and world clutter (e.g. to remove grass or forest from the surface of roads projected using decals).

Arguments

• int mask - Integer, each bit of which is a mask.

int getIntersectionMask()

Returns the current intersection mask of the decal. This mask can be used to cut out areas intersected by the decal from grass, mesh clutter and world clutter (e.g. to remove grass or forest from the surface of roads projected using decals).

Return value

Integer, each bit of which is a mask.

int isTerrainHole()

Returns a value indicating if the decal is used to create a hole in the terrain.

Return value

1 if the decal is used to create a terrain hole; otherwise, 0.

int inside(const Math::vec3 & p)

Returns a value indicating if the point with the given coordinates is inside the decal (in object-space).

Arguments

• const Math::vec3 & p - Point coordinates.

Return value

1 if the point is inside the decal; otherwise, 0.