osb/source/game/StarDrawable.hpp

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#ifndef STAR_DRAWABLE_HPP
#define STAR_DRAWABLE_HPP
#include "StarString.hpp"
#include "StarDataStream.hpp"
#include "StarPoly.hpp"
#include "StarColor.hpp"
#include "StarJson.hpp"
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#include "StarAssetPath.hpp"
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namespace Star {
struct Drawable {
struct LinePart {
Line2F line;
float width;
};
struct PolyPart {
PolyF poly;
};
struct ImagePart {
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AssetPath image;
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// Transformation of the image in pixel space (0, 0) - (width, height) to
// the final drawn space
Mat3F transformation;
// Add directives to this ImagePart, while optionally keeping the
// transformed center of the image the same if the directives change the
// image size.
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ImagePart& addDirectives(Directives const& directives, bool keepImageCenterPosition = false);
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// Remove directives from this ImagePart, while optionally keeping the
// transformed center of the image the same if the directives change the
// image size.
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ImagePart& removeDirectives(bool keepImageCenterPosition = false);
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};
static Drawable makeLine(Line2F const& line, float lineWidth, Color const& color, Vec2F const& position = Vec2F());
static Drawable makePoly(PolyF poly, Color const& color, Vec2F const& position = Vec2F());
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static Drawable makeImage(AssetPath image, float pixelSize, bool centered, Vec2F const& position, Color const& color = Color::White);
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template <typename DrawablesContainer>
static void translateAll(DrawablesContainer& drawables, Vec2F const& translation);
template <typename DrawablesContainer>
static void rotateAll(DrawablesContainer& drawables, float rotation, Vec2F const& rotationCenter = Vec2F());
template <typename DrawablesContainer>
static void scaleAll(DrawablesContainer& drawables, float scaling, Vec2F const& scaleCenter = Vec2F());
template <typename DrawablesContainer>
static void scaleAll(DrawablesContainer& drawables, Vec2F const& scaling, Vec2F const& scaleCenter = Vec2F());
template <typename DrawablesContainer>
static void transformAll(DrawablesContainer& drawables, Mat3F const& transformation);
template <typename DrawablesContainer>
static void rebaseAll(DrawablesContainer& drawables, Vec2F const& newBase = Vec2F());
template <typename DrawablesContainer>
static RectF boundBoxAll(DrawablesContainer const& drawables, bool cropImages);
Drawable();
explicit Drawable(Json const& json);
Json toJson() const;
void translate(Vec2F const& translation);
void rotate(float rotation, Vec2F const& rotationCenter = Vec2F());
void scale(float scaling, Vec2F const& scaleCenter = Vec2F());
void scale(Vec2F const& scaling, Vec2F const& scaleCenter = Vec2F());
void transform(Mat3F const& transformation);
// Change the base position of a drawable without changing the position that
// the drawable appears, useful to re-base a set of drawables at the same
// position so that they will be transformed together with minimal drift
// between them.
void rebase(Vec2F const& newBase = Vec2F());
RectF boundBox(bool cropImages) const;
bool isLine() const;
LinePart& linePart();
LinePart const& linePart() const;
bool isPoly() const;
PolyPart& polyPart();
PolyPart const& polyPart() const;
bool isImage() const;
ImagePart& imagePart();
ImagePart const& imagePart() const;
MVariant<LinePart, PolyPart, ImagePart> part;
Vec2F position;
Color color;
bool fullbright;
};
DataStream& operator>>(DataStream& ds, Drawable& drawable);
DataStream& operator<<(DataStream& ds, Drawable const& drawable);
template <typename DrawablesContainer>
void Drawable::translateAll(DrawablesContainer& drawables, Vec2F const& translation) {
for (auto& drawable : drawables)
drawable.translate(translation);
}
template <typename DrawablesContainer>
void Drawable::rotateAll(DrawablesContainer& drawables, float rotation, Vec2F const& rotationCenter) {
for (auto& drawable : drawables)
drawable.rotate(rotation, rotationCenter);
}
template <typename DrawablesContainer>
void Drawable::scaleAll(DrawablesContainer& drawables, float scaling, Vec2F const& scaleCenter) {
for (auto& drawable : drawables)
drawable.scale(scaling, scaleCenter);
}
template <typename DrawablesContainer>
void Drawable::scaleAll(DrawablesContainer& drawables, Vec2F const& scaling, Vec2F const& scaleCenter) {
for (auto& drawable : drawables)
drawable.scale(scaling, scaleCenter);
}
template <typename DrawablesContainer>
void Drawable::transformAll(DrawablesContainer& drawables, Mat3F const& transformation) {
for (auto& drawable : drawables)
drawable.transform(transformation);
}
template <typename DrawablesContainer>
void Drawable::rebaseAll(DrawablesContainer& drawables, Vec2F const& newBase) {
for (auto& drawable : drawables)
drawable.rebase(newBase);
}
template <typename DrawablesContainer>
RectF Drawable::boundBoxAll(DrawablesContainer const& drawables, bool cropImages) {
RectF boundBox = RectF::null();
for (auto const& drawable : drawables)
boundBox.combine(drawable.boundBox(cropImages));
return boundBox;
}
inline bool Drawable::isLine() const {
return part.is<LinePart>();
}
inline Drawable::LinePart& Drawable::linePart() {
return part.get<LinePart>();
}
inline Drawable::LinePart const& Drawable::linePart() const {
return part.get<LinePart>();
}
inline bool Drawable::isPoly() const {
return part.is<PolyPart>();
}
inline Drawable::PolyPart& Drawable::polyPart() {
return part.get<PolyPart>();
}
inline Drawable::PolyPart const& Drawable::polyPart() const {
return part.get<PolyPart>();
}
inline bool Drawable::isImage() const {
return part.is<ImagePart>();
}
inline Drawable::ImagePart& Drawable::imagePart() {
return part.get<ImagePart>();
}
inline Drawable::ImagePart const& Drawable::imagePart() const {
return part.get<ImagePart>();
}
}
#endif