Unigine::LightFlareBillboard Class

This class is used to manage billboards used for the per-light lens flares effect.

LightFlareBillboard Class

Members

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void setName(const char * name)

Sets a new name for the lens flare billboard.

Arguments

• const char * name - Billboard name to be set.

const char * getName()

Returns the current name of the lens flare billboard.

Return value

Current billboard name.

void setColor(Math::vec4 & color)

Sets a new color for the lens flare billboard.

Arguments

• Math::vec4 & color - Billboard color to be set.

Math::vec4 getColor()

Returns the current color of the lens flare billboard.

Return value

Current billboard color.

void setSize(float size)

Sets a new size for the lens flare billboard.

Arguments

• float size - Billboard size to be set.

float getSize()

Returns the current size of the lens flare billboard.

Return value

Current billboard size.

void setIntensity(float size)

Sets a new intensity value for the lens flare billboard.

Arguments

• float size - Billboard intensity to be set. The color of the billboard is multiplied by this value. The higher the value, the brighter the flare will be.

float getIntensity()

Returns the current intensity of the lens flare billboard.

Return value

Current billboard intensity. The color of the billboard is multiplied by this value. The higher the value, the brighter the flare will be.

void setOffset(float offset)

Sets a new offset value for the lens flare billboard. The offset determines the distance from the light source along the vector oriented from the light source to the screen center.

Arguments

• float offset - Billboard offset value to be set. The lower the absolute value is, the closer to the light source the billboard will be. Negative values indicate that the distance is measured in the opposite direction.

float getOffset()

Returns the current offset value for the lens flare billboard. It is the offset from the light source along the direction of the light ray.

Return value

Current billboard offset value. The lower the absolute value is, the closer to the light source the billboard will be. Negative values indicate that the distance is measured in the opposite direction.

void setOffsetScale(float scale)

Sets the offset-dependent scale factor for the lens flare billboard.

Arguments

• float scale - Scale factor to be used. As the offset from the light source increases:
  • values less than 1.0f will make the billboard shrink.
  • values greater than 1.0f will make the billboard grow.

float getOffsetScale()

Returns the current offset-dependent scale factor for the lens flare billboard.

Return value

Current scale factor. As the offset from the light source increases:

• values less than 1.0f will make the billboard shrink.
• values greater than 1.0f will make the billboard grow.

void setUVLowerLeft(Math::vec2 & uv)

Sets the UV texture coordinates of the lower left corner of the lens flare billboard.

Arguments

• Math::vec2 & uv - UV texture coordinates of the lower left corner of the lens flare billboard.

Math::vec2 getUVLowerLeft()

Returns the current UV texture coordinates of the lower left corner of the lens flare billboard.

Return value

Current UV texture coordinates of the lower left corner of the lens flare billboard.

void setUVUpperRight(Math::vec2 & uv)

Sets the UV texture coordinates of the upper right corner of the lens flare billboard.

Arguments

• Math::vec2 & uv - UV texture coordinates of the the upper right corner of the lens flare billboard.

Math::vec2 getUVUpperRight()

Returns the current UV texture coordinates of the upper rightcorner of the lens flare billboard.

Return value

Current UV texture coordinates of the the upper right corner of the lens flare billboard.

void setRotate(int value)

Enables or disables rotation of the lens flare billboard. When enabled the top of the billboard will always face the center of the screen.

Arguments

• int value - 1 to rotation of the lens flare billboard, 0 to disable. The default value is 0.

int isRotate()

Returns a value indicating if rotation of the lens flare billboard is enabled. When enabled the top of the billboard will always face the center of the screen.

Return value

1 if rotation of the lens flare billboard is enabled; otherwise, 0.