diguyViewPainter.h

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/*********************************************************************
 ** Copyright (c) 1992-2016 VT MAK
 ** All rights reserved. 
 *********************************************************************/


#ifndef __diguyViewPainter_H
#define __diguyViewPainter_H

#ifdef SWIG
%module diguyViewPainter
#else
#define CPLUSPLUS_ONLY
#endif

#include <declspec_diguy.h>

class diguyCharacter;
class diguyGraphicsShaderProgram;

/*********************************************************************
**
*t  diguyViewPainter
**
*b    Link against: libdiguy
**
*b  Summary:
**
**    The diguyViewPainter class acts as a helper for drawing various
**    graphics primitives in DI-Guy Scenario 3D views.
**
**    Currently this class is only supported in DI-Guy Scenario, and should
**    be utilized only inside of a diguyScenario::CALLBACK_ID_POST_DRAW
**    callback, or inside of a mind draw function.
**
**    There is only one diguyViewPainter.  Retrieve a pointer to it by
**    calling diguyApp::get_view_painter().
*/
class BDI_DECLSPEC_diguy diguyViewPainter
{

public:

/*****************************************************************************/
        /*l
         *b  Description:
         **
         **    Sets the current width of lines drawn by the painter.
         */
        virtual void set_line_width(float width);

        /*l
         *b  Description:
         **
         **    Sets the color of the default pen.  Pens typically draw lines and
         **    borders around shapes.  Color values should be between 0.0 and
         **    1.0.
         */
        virtual void set_pen_color(float red, float green, float blue, float alpha = 1.0f);

        /*l
         *b  Description:
         **
         **    Sets the color of the secondary pen.  Color values should be
         **    between 0.0 and 1.0.
         */
        virtual void set_pen2_color(float red, float green, float blue, float alpha = 1.0f);

        /*l
         *b  Description:
         **
         **    Sets the color of the brush.  Brushes are typically used for
         **    filling shapes.  Color values should be between 0.0 and 1.0.
         */
        virtual void set_brush_color(float red, float green, float blue, float alpha = 1.0f);


/*****************************************************************************/
        /*l
         *b  Description:
         **
         **    Fills out the width and height arguments with the dimensions of
         **    the primary 3D view.
         */
        virtual void get_viewport_size(float* width, float* height);

        /*l
         *b  Description:
         **
         **    This function converts a world (x, y, z) coordinate into a view
         **    (x, y, z) coordinate.
         **
         **    Note: this function must be called *before* 2d text mode is
         **    entered with the begin_2d_text_mode() function.
         **
         **    If the returned view z value is greater then 1, the returned
         **    coordinate is behind the camera.
         */
        virtual void world_to_screen(float world_x, float world_y, float world_z,
                float* view_x, float* view_y, float* view_z);


/*****************************************************************************/
        /*l
         *b  Description:
         **
         **    Draws a line from (x1, y1, z1) to (x2, y2, z2) using the pen color.
         */
        virtual void draw_line(float x1, float y1, float z1,
                float x2, float y2, float z2);

        /*l
         *b  Description:
         **
         **    Draws a line from (x1, y1, z1) to (x2, y2, z2) using both of the
         **    pen colors.  The color of the line is interpolated from point 1 to
         **    point 2.
         */
        virtual void draw_line_2c(float x1, float y1, float z1,
                float x2, float y2, float z2);

        /*l
         *b  Description:
         **
         **    Draws a sphere with its center at (x, y, z), with radius radius.
         */
        virtual void draw_sphere(float x, float y, float z,
                float radius,
                int draw_edges = 1,
                int draw_fill = 1);

        /*l
         *b  Description:
         **
         **    Draws an axis aligned bounding box with one corner at (x1, y1, z1),
         **    the other at (x2, y2, z2).
         */
        virtual void draw_box(float x1, float y1, float z1,
                float x2, float y2, float z2,
                int draw_edges = 1,
                int draw_fill = 1);

        /*l
         *b  Description:
         **
         **    Draws a rotated bounding box with one corner at unrotated (x1,
         **    y1, z1), and another at unrotated (x2, y2, z2), applying the
         **    rotation Euler angles (given in BDI_EULER_ANGLE_ORDER_ZXY order in
         **    degrees).  The box is drawn at center point (xc, yc, zc) in global
         **    space, and then rotated.
         */
        virtual void draw_rotated_box(float x1, float y1, float z1,
                float x2, float y2, float z2,
                float yaw, float roll, float pitch,
                float xc, float yc, float zc,
                int edges = 1,
                int fill = 1);

        /*l
         *b  Description:
         **
         **    Draws an arrow from (x1, y1, z1) to (x2, y2, z2).
         */
        virtual void draw_arrow(float x1, float y1, float z1,
                float x2, float y2, float z2,
                float shaft_width = 0.02,
                float arrow_width = 0.05,
                int draw_edges = 1,
                int draw_fill = 1);

        /*l
         *b  Description:
         **
         **    Draws a disc with its center at (x, y, z), and the given radius.
         */
        virtual void draw_disc(float x, float y, float z,
                float radius,
                int draw_edges = 1,
                int draw_fill = 1,
                int num_sides = 12);

        /*l
         *b  Description:
         **
         **    Draws a circle at (x, y, z), with normal (normal_x, normal_y,
         **    normal_z), and the given radius.
         */
        virtual void draw_circle(float x, float y, float z,
                float normal_x, float normal_y, float normal_z,
                float radius,
                int draw_edges = 1,
                int draw_fill = 1,
                int num_sides = 12);

        /*l
         *b  Description:
         **
         **    Draws a torus at (x, y, z), with normal (normal_x, normal_y,
         **    normal_z), and the given radius.
         */
        virtual void draw_torus(float x, float y, float z,
                float inner_radius,
                float outer_radius,
                int draw_edges = 1,
                int draw_fill = 1,
                int num_sides = 12);

        /*l
         *b  Description:
         **
         **    Draws a Z-axis-up cylinder, with its bottom cap centered at
         **    (x1, y1, z).  The cylinder will have the given radius and height.
         */
        virtual void draw_cylinder(float x, float y, float z,
                float radius,
                float height,
                int draw_edges = 1,
                int draw_fill = 1);


        /*l
         *b  Description:
         **
         **    Draws wedge.
         */
        virtual void draw_wedge(float x, float y, float z,
                float target_x, float target_y, float target_z,
                float inner_radius,
                float width,
                int draw_edges = 1,
                int draw_fill = 1);

        virtual void draw_wedge_with_normal(float x, float y, float z,
                float target_x, float target_y, float target_z,
                float nx, float ny, float nz,
                float inner_radius,
                float width,
                int draw_edges = 1,
                int draw_fill = 1);


/*****************************************************************************/
        /*l
         *b  Description:
         **
         **    Puts the OpenGL view matrix into a 2D orthogonal state so that
         **    2D primitives will be drawn in 2D view coordinates rather than in
         **    3D world coordinates.
         **    This call *must* be balanced by a call to end_2d_text_mode(), or
         **    overall drawing will be broken.
         */
        virtual void begin_2d_mode();

        /*l
         *b  Description:
         **
         **   same as begin_2d_mode() but also binds font texture
         */
        virtual void begin_2d_text_mode();


        /*l
         *b  Description:
         **
         **    Returns the OpenGL view matrix back into a 3D perspective state.
         **
         **    This call *must* be balanced by a call to begin_2d_text_mode(), or
         **    overall drawing will be broken.
         */
        virtual void end_2d_text_mode();

        /*l
         *b  Description:
         **
         **    Draws the passed text string at view coordinates (x, y).
         **
         **    Should only be called inside of a begin_2d_text_mode() and
         **    end_2d_text_mode() block.
         **
         **    The text is drawn with the current pen color.
         */
        virtual void draw_text(float screen_x, float screen_y, const char* text);

        /*l
         *b  Description:
         **
         **    Draws a 2D rectangle with the given points as the corners.
         **
         **    Should only be called inside of a begin_2d_text_mode() and
         **    end_2d_text_mode() block.
         **
         **    The edges are drawn with the current pen color, the fill is
         **    drawn with the current brush color.
         */
        virtual void draw_2d_rect(float x0,
                float y0,
                float x1,
                float y1,
                float z0 = 0.0f,
                int draw_edges = 1,
                int draw_fill = 1);

        virtual void draw_private_path_shape(diguyCharacter* diguy_character,
                int include_waypoints = 0);

        /*
         *  Point Array Documentation Pending, Experimental
         */
        virtual void debug_pa_add_2d_point(const char * name, float x, float y);
        virtual void debug_pa_add_3d_point(const char * name, float x, float y, float z);
        virtual void debug_pa_set_param_color(const char * name, float r, float g, float b, float a = 1.0f);
        // params can be "line_loop"
        virtual void debug_pa_set_param_style(const char * name, const char * param, int value);
        virtual void debug_pa_reset(const char * name);

        virtual void draw_point_arrays();

#ifdef CPLUSPLUS_ONLY
        virtual void draw_opengl_primitive(diguyGraphicsShaderProgram * shader, int primitive_type, int vertex_count, float * verts,
                float * colors = NULL, float * normals = NULL, float * uvs = NULL);
        virtual void draw_opengl_primitive(int primative_type, int vertex_count, float * verts, float * colors = NULL, float * normals = NULL, float * uvs = NULL);

protected:

        /*l
         **    A protected constructor.  Use the DI-Guy function
         **    diguyApp:get_view_painter() to obtain a diguyViewPainter object
         **    pointer.
         */
        diguyViewPainter();

private:


        friend class bdiScenarioApp;

#endif

};

#endif /* __diguyViewPainter_H */