- cpp3ds
- ConvexShape
Specialized shape representing a convex polygon. More...
#include <ConvexShape.hpp>
Public Member Functions | |
| ConvexShape (unsigned int pointCount=0) | |
| Default constructor. More... | |
| void | setPointCount (unsigned int count) |
| Set the number of points of the polygon. More... | |
| virtual unsigned int | getPointCount () const |
| Get the number of points of the polygon. More... | |
| void | setPoint (unsigned int index, const Vector2f &point) |
| Set the position of a point. More... | |
| virtual Vector2f | getPoint (unsigned int index) const |
| Get the position of a point. More... | |
| void | setTexture (const Texture *texture, bool resetRect=false) |
| Change the source texture of the shape. More... | |
| void | setTextureRect (const IntRect &rect) |
| Set the sub-rectangle of the texture that the shape will display. More... | |
| void | setFillColor (const Color &color) |
| Set the fill color of the shape. More... | |
| void | setOutlineColor (const Color &color) |
| Set the outline color of the shape. More... | |
| void | setOutlineThickness (float thickness) |
| Set the thickness of the shape's outline. More... | |
| const Texture * | getTexture () const |
| Get the source texture of the shape. More... | |
| const IntRect & | getTextureRect () const |
| Get the sub-rectangle of the texture displayed by the shape. More... | |
| const Color & | getFillColor () const |
| Get the fill color of the shape. More... | |
| const Color & | getOutlineColor () const |
| Get the outline color of the shape. More... | |
| float | getOutlineThickness () const |
| Get the outline thickness of the shape. More... | |
| FloatRect | getLocalBounds () const |
| Get the local bounding rectangle of the entity. More... | |
| FloatRect | getGlobalBounds () const |
| Get the global bounding rectangle of the entity. More... | |
| void | setPosition (float x, float y) |
| set the position of the object More... | |
| void | setPosition (const Vector2f &position) |
| set the position of the object More... | |
| void | setRotation (float angle) |
| set the orientation of the object More... | |
| void | setScale (float factorX, float factorY) |
| set the scale factors of the object More... | |
| void | setScale (const Vector2f &factors) |
| set the scale factors of the object More... | |
| void | setOrigin (float x, float y) |
| set the local origin of the object More... | |
| void | setOrigin (const Vector2f &origin) |
| set the local origin of the object More... | |
| const Vector2f & | getPosition () const |
| get the position of the object More... | |
| float | getRotation () const |
| get the orientation of the object More... | |
| const Vector2f & | getScale () const |
| get the current scale of the object More... | |
| const Vector2f & | getOrigin () const |
| get the local origin of the object More... | |
| void | move (float offsetX, float offsetY) |
| Move the object by a given offset. More... | |
| void | move (const Vector2f &offset) |
| Move the object by a given offset. More... | |
| void | rotate (float angle) |
| Rotate the object. More... | |
| void | scale (float factorX, float factorY) |
| Scale the object. More... | |
| void | scale (const Vector2f &factor) |
| Scale the object. More... | |
| const Transform & | getTransform () const |
| get the combined transform of the object More... | |
| const Transform & | getInverseTransform () const |
| get the inverse of the combined transform of the object More... | |
Protected Member Functions | |
| void | update () |
| Recompute the internal geometry of the shape. More... | |
Specialized shape representing a convex polygon.
This class inherits all the functions of cpp3ds::Transformable (position, rotation, scale, bounds, ...) as well as the functions of cpp3ds::Shape (outline, color, texture, ...).
It is important to keep in mind that a convex shape must always be... convex, otherwise it may not be drawn correctly. Moreover, the points must be defined in order; using a random order would result in an incorrect shape.
Usage example:
Definition at line 41 of file ConvexShape.hpp.
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explicit |
Default constructor.
| pointCount | Number of points of the polygon |
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inherited |
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inherited |
Get the global bounding rectangle of the entity.
The returned rectangle is in global coordinates, which means that it takes in account the transformations (translation, rotation, scale, ...) that are applied to the entity. In other words, this function returns the bounds of the sprite in the global 2D world's coordinate system.
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inherited |
get the inverse of the combined transform of the object
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inherited |
Get the local bounding rectangle of the entity.
The returned rectangle is in local coordinates, which means that it ignores the transformations (translation, rotation, scale, ...) that are applied to the entity. In other words, this function returns the bounds of the entity in the entity's coordinate system.
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inherited |
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inherited |
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inherited |
Get the outline thickness of the shape.
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virtual |
Get the position of a point.
The returned point is in local coordinates, that is, the shape's transforms (position, rotation, scale) are not taken into account. The result is undefined if index is out of the valid range.
| index | Index of the point to get, in range [0 .. getPointCount() - 1] |
Implements cpp3ds::Shape.
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virtual |
Get the number of points of the polygon.
Implements cpp3ds::Shape.
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inherited |
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inherited |
get the orientation of the object
The rotation is always in the range [0, 360].
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inherited |
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inherited |
Get the source texture of the shape.
If the shape has no source texture, a NULL pointer is returned. The returned pointer is const, which means that you can't modify the texture when you retrieve it with this function.
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inherited |
Get the sub-rectangle of the texture displayed by the shape.
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inherited |
get the combined transform of the object
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inherited |
Move the object by a given offset.
This function adds to the current position of the object, unlike setPosition which overwrites it. Thus, it is equivalent to the following code:
| offsetX | X offset |
| offsetY | Y offset |
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inherited |
Move the object by a given offset.
This function adds to the current position of the object, unlike setPosition which overwrites it. Thus, it is equivalent to the following code:
| offset | Offset |
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inherited |
Rotate the object.
This function adds to the current rotation of the object, unlike setRotation which overwrites it. Thus, it is equivalent to the following code:
| angle | Angle of rotation, in degrees |
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inherited |
Scale the object.
This function multiplies the current scale of the object, unlike setScale which overwrites it. Thus, it is equivalent to the following code:
| factorX | Horizontal scale factor |
| factorY | Vertical scale factor |
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inherited |
Scale the object.
This function multiplies the current scale of the object, unlike setScale which overwrites it. Thus, it is equivalent to the following code:
| factor | Scale factors |
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inherited |
Set the fill color of the shape.
This color is modulated (multiplied) with the shape's texture if any. It can be used to colorize the shape, or change its global opacity. You can use cpp3ds::Color::Transparent to make the inside of the shape transparent, and have the outline alone. By default, the shape's fill color is opaque white.
| color | New color of the shape |
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inherited |
set the local origin of the object
The origin of an object defines the center point for all transformations (position, scale, rotation). The coordinates of this point must be relative to the top-left corner of the object, and ignore all transformations (position, scale, rotation). The default origin of a transformable object is (0, 0).
| x | X coordinate of the new origin |
| y | Y coordinate of the new origin |
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inherited |
set the local origin of the object
The origin of an object defines the center point for all transformations (position, scale, rotation). The coordinates of this point must be relative to the top-left corner of the object, and ignore all transformations (position, scale, rotation). The default origin of a transformable object is (0, 0).
| origin | New origin |
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inherited |
Set the outline color of the shape.
By default, the shape's outline color is opaque white.
| color | New outline color of the shape |
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inherited |
Set the thickness of the shape's outline.
Note that negative values are allowed (so that the outline expands towards the center of the shape), and using zero disables the outline. By default, the outline thickness is 0.
| thickness | New outline thickness |
| void cpp3ds::ConvexShape::setPoint | ( | unsigned int | index, |
| const Vector2f & | point | ||
| ) |
Set the position of a point.
Don't forget that the polygon must remain convex, and the points need to stay ordered! setPointCount must be called first in order to set the total number of points. The result is undefined if index is out of the valid range.
| index | Index of the point to change, in range [0 .. getPointCount() - 1] |
| point | New position of the point |
| void cpp3ds::ConvexShape::setPointCount | ( | unsigned int | count | ) |
Set the number of points of the polygon.
count must be greater than 2 to define a valid shape.
| count | New number of points of the polygon |
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inherited |
set the position of the object
This function completely overwrites the previous position. See the move function to apply an offset based on the previous position instead. The default position of a transformable object is (0, 0).
| x | X coordinate of the new position |
| y | Y coordinate of the new position |
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inherited |
set the position of the object
This function completely overwrites the previous position. See the move function to apply an offset based on the previous position instead. The default position of a transformable object is (0, 0).
| position | New position |
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inherited |
set the orientation of the object
This function completely overwrites the previous rotation. See the rotate function to add an angle based on the previous rotation instead. The default rotation of a transformable object is 0.
| angle | New rotation, in degrees |
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inherited |
set the scale factors of the object
This function completely overwrites the previous scale. See the scale function to add a factor based on the previous scale instead. The default scale of a transformable object is (1, 1).
| factorX | New horizontal scale factor |
| factorY | New vertical scale factor |
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inherited |
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inherited |
Change the source texture of the shape.
The texture argument refers to a texture that must exist as long as the shape uses it. Indeed, the shape doesn't store its own copy of the texture, but rather keeps a pointer to the one that you passed to this function. If the source texture is destroyed and the shape tries to use it, the behaviour is undefined. texture can be NULL to disable texturing. If resetRect is true, the TextureRect property of the shape is automatically adjusted to the size of the new texture. If it is false, the texture rect is left unchanged.
| texture | New texture |
| resetRect | Should the texture rect be reset to the size of the new texture? |
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inherited |
Set the sub-rectangle of the texture that the shape will display.
The texture rect is useful when you don't want to display the whole texture, but rather a part of it. By default, the texture rect covers the entire texture.
| rect | Rectangle defining the region of the texture to display |
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protectedinherited |
Recompute the internal geometry of the shape.
This function must be called by the derived class everytime the shape's points change (ie. the result of either getPointCount or getPoint is different).