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author | KT <tran0563@umn.edu> | 2021-09-06 19:07:33 -0500 |
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committer | KT <tran0563@umn.edu> | 2021-09-06 19:07:33 -0500 |
commit | cccd3186305915d92b1751dc616979d64116a4aa (patch) | |
tree | 5dd4834daef547cd45fc0b643f44a10b581de0ad /dev/a6-harold/billboards.h | |
parent | Added missing images for the A6 worksheet (diff) | |
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-rw-r--r-- | dev/a6-harold/billboards.h | 78 |
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diff --git a/dev/a6-harold/billboards.h b/dev/a6-harold/billboards.h deleted file mode 100644 index 7de2799..0000000 --- a/dev/a6-harold/billboards.h +++ /dev/null @@ -1,78 +0,0 @@ -/** CSci-4611 Assignment 6: Harold - */ - -#ifndef BILLBOARDS_H_ -#define BILLBOARDS_H_ - -#include <mingfx.h> -using namespace mingfx; - -#include "ground.h" - -/** Billboards are strokes planted in the ground that rotate automatically to - face the viewer. This class holds the entire collection of billboard strokes. - */ -class Billboards { -public: - Billboards(); - virtual ~Billboards(); - - void Init(ShaderProgram *stroke3d_shaderprog); - - /// Projects a 2D normalized screen point (e.g., the mouse position in normalized - /// device coordinates) to a 3D point on a plane defined by an "origin", which can - /// really be any point coincident with the plane, and the plane normal. Returns - /// true if the screen point projects onto the plane and stores the result in - /// plane_point. Returns false if the screen point does not project onto the plane. - bool ScreenPtHitsPlane(const Matrix4 &view_matrix, const Matrix4 &proj_matrix, - const Point3 &plane_origin, const Vector3 &plane_normal, - const Point2 &normalized_screen_pt, Point3 *plane_point); - - - /// Checks to see if a ray starting at the eye point and passing through 2D - /// normalized screen point projects onto any of the billboards in the scene. If - /// so, returns the id of the closest billboard intersected. If not, returns -1. - int IntersectBillboard(const Matrix4 &view_matrix, const Matrix4 &proj_matrix, - const Point2 &normalized_screen_pt); - - - /// Adds a new stroke as a billboard by projecting it onto a plane parallel - /// to the filmplane that intersects with the anchor point, which should lie - /// on the ground. - void AddBillboardStroke(const Matrix4 &view_matrix, const Matrix4 &proj_matrix, - const std::vector<Point2> &stroke2d, const Mesh &stroke2d_mesh, - const Color &stroke_color, Ground *ground_ptr); - - /// Edits an existing billboard by adding an additional stroke to it. - void AddToBillboard(const Matrix4 &view_matrix, const Matrix4 &proj_matrix, - int billboard_id, const Mesh &stroke2d_mesh, - const Color &stroke_color); - - - /// Adjusts the transformation matrix used to draw each billboard so that the - /// billboard will face the camera. Needs to be called each time the camera - /// is moved within the scene. - void UpdateBillboardRotations(const Point3 ¤t_eye_point); - - - /// Draws all of the billboards - void Draw(const Matrix4 &view_matrix, const Matrix4 &proj_matrix); - -private: - - // each billboard stores the following - struct Billboard { - Mesh mesh; - Color color; - Point3 anchor_pt; - AABB bounding_box; - Matrix4 transform; - }; - - // the array of all active billboards - std::vector<Billboard> billboards_; - - ShaderProgram *stroke3d_shaderprog_; -}; - -#endif |