draw.qh

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#pragma once

#ifdef CSQC

    #include "i18n.qh"
    #include "vector.qh"

    noref float vid_conwidth;
    noref float vid_conheight;

    void Draw_CylindricLine(vector from, vector to, float thickness, string texture, float aspect, float shift, vector rgb, float theAlpha, float drawflag, vector vieworg)
    {
        // I want to draw a quad...
        // from and to are MIDPOINTS.

        vector axis, thickdir, A, B, C, D;
        float length_tex;

        axis = normalize(to - from);
        length_tex = aspect * vlen(to - from) / thickness;

        // direction is perpendicular to the view normal, and perpendicular to the axis
        thickdir = normalize(cross(axis, vieworg - from));

        A = from - thickdir * (thickness / 2);
        B = from + thickdir * (thickness / 2);
        C = to + thickdir * (thickness / 2);
        D = to - thickdir * (thickness / 2);

        R_BeginPolygon(texture, drawflag, false);
        R_PolygonVertex(A, '0 0 0' + shift * '1 0 0', rgb, theAlpha);
        R_PolygonVertex(B, '0 1 0' + shift * '1 0 0', rgb, theAlpha);
        R_PolygonVertex(C, '0 1 0' + (shift + length_tex) * '1 0 0', rgb, theAlpha);
        R_PolygonVertex(D, '0 0 0' + (shift + length_tex) * '1 0 0', rgb, theAlpha);
        R_EndPolygon();
    }

// a border picture is a texture containing nine parts:
//   1/4 width: left part
//   1/2 width: middle part (stretched)
//   1/4 width: right part
// divided into
//   1/4 height: top part
//   1/2 height: middle part (stretched)
//   1/4 height: bottom part
    void draw_BorderPicture(vector theOrigin, string pic, vector theSize, vector theColor, float theAlpha, vector theBorderSize)
    {
        if (theBorderSize.x < 0 && theBorderSize.y < 0)  // draw whole image as it is
        {
            drawpic_builtin(theOrigin, pic, theSize, theColor, theAlpha, 0);
            return;
        }
        if (theBorderSize.x == 0 && theBorderSize.y == 0)  // no border
        {
            // draw only the central part
            drawsubpic(theOrigin, theSize, pic, '0.25 0.25 0', '0.5 0.5 0', theColor, theAlpha, 0);
            return;
        }

        vector dX, dY;
        vector width, height;
        vector bW, bH;
        // pic = draw_UseSkinFor(pic);
        width = eX * theSize.x;
        height = eY * theSize.y;
        if (theSize.x <= theBorderSize.x * 2)
        {
            // not wide enough... draw just left and right then
            bW = eX * (0.25 * theSize.x / (theBorderSize.x * 2));
            if (theSize.y <= theBorderSize.y * 2)
            {
                // not high enough... draw just corners
                bH = eY * (0.25 * theSize.y / (theBorderSize.y * 2));
                drawsubpic(theOrigin,                 width * 0.5 + height * 0.5, pic, '0 0 0',           bW + bH, theColor, theAlpha, 0);
                drawsubpic(theOrigin + width   * 0.5, width * 0.5 + height * 0.5, pic, eX - bW,           bW + bH, theColor, theAlpha, 0);
                drawsubpic(theOrigin + height  * 0.5, width * 0.5 + height * 0.5, pic, eY - bH,           bW + bH, theColor, theAlpha, 0);
                drawsubpic(theOrigin + theSize * 0.5, width * 0.5 + height * 0.5, pic, eX + eY - bW - bH, bW + bH, theColor, theAlpha, 0);
            }
            else
            {
                dY = theBorderSize.x * eY;
                drawsubpic(theOrigin,                             width * 0.5          +     dY, pic, '0 0    0',           '0 0.25 0' + bW, theColor, theAlpha, 0);
                drawsubpic(theOrigin + width * 0.5,               width * 0.5          +     dY, pic, '0 0    0' + eX - bW, '0 0.25 0' + bW, theColor, theAlpha, 0);
                drawsubpic(theOrigin                        + dY, width * 0.5 + height - 2 * dY, pic, '0 0.25 0',           '0 0.5  0' + bW, theColor, theAlpha, 0);
                drawsubpic(theOrigin + width * 0.5          + dY, width * 0.5 + height - 2 * dY, pic, '0 0.25 0' + eX - bW, '0 0.5  0' + bW, theColor, theAlpha, 0);
                drawsubpic(theOrigin               + height - dY, width * 0.5          +     dY, pic, '0 0.75 0',           '0 0.25 0' + bW, theColor, theAlpha, 0);
                drawsubpic(theOrigin + width * 0.5 + height - dY, width * 0.5          +     dY, pic, '0 0.75 0' + eX - bW, '0 0.25 0' + bW, theColor, theAlpha, 0);
            }
        }
        else
        {
            if (theSize.y <= theBorderSize.y * 2)
            {
                // not high enough... draw just top and bottom then
                bH = eY * (0.25 * theSize.y / (theBorderSize.y * 2));
                dX = theBorderSize.x * eX;
                drawsubpic(theOrigin,                                         dX + height * 0.5, pic, '0    0 0',           '0.25 0 0' + bH, theColor, theAlpha, 0);
                drawsubpic(theOrigin + dX,                        width - 2 * dX + height * 0.5, pic, '0.25 0 0',           '0.5  0 0' + bH, theColor, theAlpha, 0);
                drawsubpic(theOrigin + width - dX,                            dX + height * 0.5, pic, '0.75 0 0',           '0.25 0 0' + bH, theColor, theAlpha, 0);
                drawsubpic(theOrigin              + height * 0.5,             dX + height * 0.5, pic, '0    0 0' + eY - bH, '0.25 0 0' + bH, theColor, theAlpha, 0);
                drawsubpic(theOrigin + dX         + height * 0.5, width - 2 * dX + height * 0.5, pic, '0.25 0 0' + eY - bH, '0.5  0 0' + bH, theColor, theAlpha, 0);
                drawsubpic(theOrigin + width - dX + height * 0.5,             dX + height * 0.5, pic, '0.75 0 0' + eY - bH, '0.25 0 0' + bH, theColor, theAlpha, 0);
            }
            else
            {
                dX = theBorderSize.x * eX;
                dY = theBorderSize.x * eY;
                drawsubpic(theOrigin,                                        dX          +     dY, pic, '0    0    0', '0.25 0.25 0', theColor, theAlpha, 0);
                drawsubpic(theOrigin                  + dX,      width - 2 * dX          +     dY, pic, '0.25 0    0', '0.5  0.25 0', theColor, theAlpha, 0);
                drawsubpic(theOrigin          + width - dX,                  dX          +     dY, pic, '0.75 0    0', '0.25 0.25 0', theColor, theAlpha, 0);
                drawsubpic(theOrigin          + dY,                          dX + height - 2 * dY, pic, '0    0.25 0', '0.25 0.5  0', theColor, theAlpha, 0);
                drawsubpic(theOrigin          + dY         + dX, width - 2 * dX + height - 2 * dY, pic, '0.25 0.25 0', '0.5  0.5  0', theColor, theAlpha, 0);
                drawsubpic(theOrigin          + dY + width - dX,             dX + height - 2 * dY, pic, '0.75 0.25 0', '0.25 0.5  0', theColor, theAlpha, 0);
                drawsubpic(theOrigin + height - dY,                          dX          +     dY, pic, '0    0.75 0', '0.25 0.25 0', theColor, theAlpha, 0);
                drawsubpic(theOrigin + height - dY         + dX, width - 2 * dX          +     dY, pic, '0.25 0.75 0', '0.5  0.25 0', theColor, theAlpha, 0);
                drawsubpic(theOrigin + height - dY + width - dX,             dX          +     dY, pic, '0.75 0.75 0', '0.25 0.25 0', theColor, theAlpha, 0);
            }
        }
    }

    ERASEABLE
    void drawstringright(vector position, string text, vector theScale, vector rgb, float theAlpha, int flag)
    {
        position.x -= 2 / 3 * strlen(text) * theScale.x;
        drawstring_builtin(position, text, theScale, rgb, theAlpha, flag);
    }

    ERASEABLE
    void drawstringcenter(vector position, string text, vector theScale, vector rgb, float theAlpha, int flag)
    {
        position.x = 0.5 * (vid_conwidth - 0.6025 * strlen(text) * theScale.x);
        drawstring_builtin(position, text, theScale, rgb, theAlpha, flag);
    }

#endif