109 lines
3.1 KiB
C++
109 lines
3.1 KiB
C++
#ifndef LLMR_MAP_TRANSFORM
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#define LLMR_MAP_TRANSFORM
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#include <llmr/util/vec.hpp>
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#include <llmr/util/mat4.hpp>
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#include <llmr/util/animation.hpp>
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#include <llmr/util/noncopyable.hpp>
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#include <llmr/map/tile.hpp>
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#include <forward_list>
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namespace llmr {
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struct box;
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class Transform : private util::noncopyable {
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public:
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Transform();
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// Animations
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bool needsAnimation() const;
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void updateAnimations(double time);
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void cancelAnimations();
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// Map view changes.
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// Note: width * ratio does not necessarily equal fb_width
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void resize(uint16_t width, uint16_t height, float ratio, uint16_t fb_width, uint16_t fb_height);
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// Relative changes
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void moveBy(double dx, double dy, double duration = 0);
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void scaleBy(double ds, double cx = -1, double cy = -1, double duration = 0);
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void rotateBy(double sx, double sy, double ex, double ey, double duration = 0);
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// Absolute changes
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void setScale(double scale, double cx = -1, double cy = -1, double duration = 0);
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void setAngle(double angle, double duration = 0);
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void setZoom(double zoom, double duration = 0);
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void setLonLat(double lon, double lat, double duration = 0);
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void setLonLatZoom(double lon, double lat, double zoom, double duration = 0);
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// Getters
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void matrixFor(mat4& matrix, const Tile::ID& id) const;
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float getZoom() const;
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float getNormalizedZoom() const;
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int32_t getIntegerZoom() const;
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double getScale() const;
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double getAngle() const;
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void getLonLat(double& lon, double& lat) const;
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void getLonLatZoom(double& lon, double& lat, double& zoom) const;
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// Animations
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void startPanning();
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void stopPanning();
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void startRotating();
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void stopRotating();
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void startScaling();
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void stopScaling();
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box cornersToBox(uint32_t z) const;
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// More getters
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inline uint16_t getWidth() const { return width; }
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inline uint16_t getHeight() const { return height; }
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inline uint16_t getFramebufferWidth() const { return fb_width; }
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inline uint16_t getFramebufferHeight() const { return fb_height; }
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inline float getPixelRatio() const { return pixelRatio; }
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private:
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void setScaleXY(double new_scale, double xn, double yn, double duration = 0);
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double pixel_x() const;
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double pixel_y() const;
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private:
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// logical dimensions
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uint16_t width = 0;
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uint16_t height = 0;
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// physical (framebuffer) dimensions
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uint16_t fb_width = 0;
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uint16_t fb_height = 0;
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float pixelRatio = 1;
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public:
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bool rotating = false;
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bool scaling = false;
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bool panning = false;
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private:
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double x = 0, y = 0; // pixel values of the map center in the current scale
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double angle = 0;
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double scale = 1;
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double min_scale = pow(2, 0);
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double max_scale = pow(2, 20);
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// cache values for spherical mercator math
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double zc, Bc, Cc;
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std::forward_list<std::shared_ptr<util::animation>> animations;
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std::shared_ptr<util::animation> scale_timeout;
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std::shared_ptr<util::animation> rotate_timeout;
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std::shared_ptr<util::animation> pan_timeout;
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};
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}
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#endif
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