draw.qc

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#include "draw.qh"

#include <client/hud/hud.qh>

void drawborderlines(float thickness, vector pos, vector dim, vector color, float theAlpha, float drawflag)
{
    vector line_dim = '0 0 0';

    // left and right lines
    pos.x -= thickness;
    line_dim.x = thickness;
    line_dim.y = dim.y;
    drawfill(pos, line_dim, color, theAlpha, drawflag);
    drawfill(pos + (dim.x + thickness) * '1 0 0', line_dim, color, theAlpha, drawflag);

    // upper and lower lines
    pos.y -= thickness;
    line_dim.x = dim.x + thickness * 2; // make upper and lower lines longer
    line_dim.y = thickness;
    drawfill(pos, line_dim, color, theAlpha, drawflag);
    drawfill(pos + (dim.y + thickness) * '0 1 0', line_dim, color, theAlpha, drawflag);
}

void drawpic_tiled(vector pos, string pic, vector sz, vector area, vector color, float theAlpha, float drawflag)
{
    pos = HUD_Shift(pos);
    sz = HUD_Scale(sz);
    area = HUD_Scale(area);

    vector current_pos = '0 0 0', end_pos, new_size = '0 0 0', ratio = '0 0 0';
    end_pos = pos + area;

    current_pos.y = pos.y;
    while (current_pos.y < end_pos.y)
    {
        current_pos.x = pos.x;
        while (current_pos.x < end_pos.x)
        {
            new_size.x = min(sz.x, end_pos.x - current_pos.x);
            new_size.y = min(sz.y, end_pos.y - current_pos.y);
            ratio.x = new_size.x / sz.x;
            ratio.y = new_size.y / sz.y;
            drawsubpic(current_pos, new_size, pic, '0 0 0', ratio, color, theAlpha, drawflag);
            current_pos.x += sz.x;
        }
        current_pos.y += sz.y;
    }
}

float expandingbox_sizefactor_from_fadelerp(float fadelerp)
{
    return 1.2 / (1.2 - fadelerp);
}

vector expandingbox_resize_centered_box_offset(float sz, vector boxsize, float boxxsizefactor)
{
    boxsize.x *= boxxsizefactor; // easier interface for text
    return boxsize * (0.5 * (1 - sz));
}

void drawpic_aspect_skin_expanding(vector position, string pic, vector theScale, vector rgb, float theAlpha, float flag, float fadelerp)
{
    float sz;
    sz = expandingbox_sizefactor_from_fadelerp(fadelerp);

    drawpic_aspect_skin(position + expandingbox_resize_centered_box_offset(sz, theScale, 1), pic, theScale * sz, rgb, theAlpha * (1 - fadelerp), flag);
}

void drawpic_aspect_skin_expanding_two(vector position, string pic, vector theScale, vector rgb, float theAlpha, float flag, float fadelerp)
{
    drawpic_aspect_skin_expanding(position, pic, theScale, rgb, theAlpha, flag, fadelerp);
    drawpic_skin(position, pic, theScale, rgb, theAlpha * fadelerp, flag);
}

float stringwidth(string text, float handleColors, vector sz)
{
    vector dfs = drawfontscale;
    drawfontscale = '1 1 0';
    float r = stringwidth_builtin(text, handleColors, sz);
    drawfontscale = dfs;
    return r;
}

#define SET_POS_AND_SZ_Y_ASPECT(allow_colors) MACRO_BEGIN \
    float textaspect, oldsz; \
    vector dfs = drawfontscale; \
    drawfontscale = '1 1 0'; \
    textaspect = stringwidth(text, allow_colors, '1 1 1' * sz.y) / sz.y; \
    drawfontscale = dfs; \
    if(sz.x/sz.y > textaspect) { \
        oldsz = sz.x; \
        sz.x = sz.y * textaspect; \
        pos.x += (oldsz - sz.x) * 0.5; \
    } else { \
        oldsz = sz.y; \
        sz.y = sz.x / textaspect; \
        pos.y += (oldsz - sz.y) * 0.5; \
    } \
MACRO_END

// drawstring wrapper to draw a string as large as possible with preserved aspect ratio into a box
void drawstring_aspect(vector pos, string text, vector sz, vector color, float theAlpha, float drawflag) {
    SET_POS_AND_SZ_Y_ASPECT(false);
    drawstring(pos, text, '1 1 0' * sz.y, color, theAlpha, drawflag);
}

// drawstring wrapper to draw a colorcodedstring as large as possible with preserved aspect ratio into a box
void drawcolorcodedstring_aspect(vector pos, string text, vector sz, float theAlpha, float drawflag) {
    SET_POS_AND_SZ_Y_ASPECT(true);
    drawcolorcodedstring(pos, text, '1 1 0' * sz.y, theAlpha, drawflag);
}

void drawstring_expanding(vector position, string text, vector theScale, vector rgb, float theAlpha, float flag, float fadelerp)
{
    float sz;
    sz = expandingbox_sizefactor_from_fadelerp(fadelerp);

    drawfontscale = hud_scale * sz;
    vector dfs = drawfontscale;
    drawfontscale = sz * '1 1 0';
    float textaspect = stringwidth_builtin(text, false, theScale * (sz / drawfontscale.x)) / (theScale.x * sz);
    drawfontscale = dfs;
    drawstring(position + expandingbox_resize_centered_box_offset(sz, theScale, textaspect), text, HUD_Scale(theScale * (sz / drawfontscale.x)), rgb, theAlpha * (1 - fadelerp), flag);
    // width parameter:
    //    (scale_x * sz / drawfontscale.x) * drawfontscale.x * SIZE1 / (scale_x * sz)
    //    SIZE1
    drawfontscale = hud_scale;
}

// drawstring wrapper to draw a string as large as possible with preserved aspect ratio into a box
void drawstring_aspect_expanding(vector pos, string text, vector sz, vector color, float theAlpha, float drawflag, float fadelerp) {
    SET_POS_AND_SZ_Y_ASPECT(false);
    drawstring_expanding(pos, text, '1 1 0' * sz.y, color, theAlpha, drawflag, fadelerp);
}

void drawcolorcodedstring_expanding(vector position, string text, vector theScale, float theAlpha, float flag, float fadelerp)
{
    float sz;
    sz = expandingbox_sizefactor_from_fadelerp(fadelerp);

    drawfontscale = hud_scale * sz;
    // eventually replace with drawcolorcodedstring
    drawcolorcodedstring(position + expandingbox_resize_centered_box_offset(sz, theScale, stringwidth_builtin(text, true, theScale * (sz / drawfontscale.x)) / (theScale.x * sz)), text, theScale * (sz / drawfontscale.x), theAlpha * (1 - fadelerp), flag);
    drawfontscale = hud_scale;
}

void drawcolorcodedstring_aspect_expanding(vector pos, string text, vector sz, float theAlpha, float drawflag, float fadelerp) {
    SET_POS_AND_SZ_Y_ASPECT(true);
    drawcolorcodedstring_expanding(pos, text, '1 1 0' * sz.y, theAlpha, drawflag, fadelerp);
}

// this draws the triangles of a model DIRECTLY. Don't expect high performance, really...
float PolyDrawModelSurface(entity e, float i_s)
{
    float i_t;
    float n_t;
    vector tri;
    string tex;
    tex = getsurfacetexture(e, i_s);
    if (!tex)
        return 0; // this is beyond the last one
    n_t = getsurfacenumtriangles(e, i_s);
    for(i_t = 0; i_t < n_t; ++i_t)
    {
        tri = getsurfacetriangle(e, i_s, i_t);
        R_BeginPolygon(tex, 0, false);
        R_PolygonVertex(getsurfacepoint(e, i_s, tri.x), getsurfacepointattribute(e, i_s, tri.x, SPA_TEXCOORDS0), '1 1 1', 1);
        R_PolygonVertex(getsurfacepoint(e, i_s, tri.y), getsurfacepointattribute(e, i_s, tri.y, SPA_TEXCOORDS0), '1 1 1', 1);
        R_PolygonVertex(getsurfacepoint(e, i_s, tri.z), getsurfacepointattribute(e, i_s, tri.z, SPA_TEXCOORDS0), '1 1 1', 1);
        R_EndPolygon();
    }
    return 1;
}
void PolyDrawModel(entity e)
{
    float i_s;
    for(i_s = 0; ; ++i_s)
        if(!PolyDrawModelSurface(e, i_s))
            break;
}

void DrawCircleClippedPic(vector centre, float radi, string pic, float f, vector rgb, float a, float drawflag)
{
    vector ringsize, v, t;
    ringsize = radi * '1 1 0';
    centre = HUD_Shift(centre);
    ringsize = HUD_Scale(ringsize);

    if(f >= 1)
    {
        // draw full rectangle
        R_BeginPolygon(pic, drawflag, true);
            v = centre;         t = '0.5 0.5 0';
            v.x += 0.5 * ringsize.x;    t += '0.5 0.5 0';
            R_PolygonVertex(v, t, rgb, a);

            v = centre;         t = '0.5 0.5 0';
            v.y += 0.5 * ringsize.y;    t += '0.5 -0.5 0';
            R_PolygonVertex(v, t, rgb, a);

            v = centre;         t = '0.5 0.5 0';
            v.x -= 0.5 * ringsize.x;    t -= '0.5 0.5 0';
            R_PolygonVertex(v, t, rgb, a);

            v = centre;         t = '0.5 0.5 0';
            v.y -= 0.5 * ringsize.y;    t -= '0.5 -0.5 0';
            R_PolygonVertex(v, t, rgb, a);
        R_EndPolygon();
        return;  // Complete rectangle, nothing more needed.
    }

    float co = cos(f * 2 * M_PI);
    float si = sin(f * 2 * M_PI);
    float q = fabs(co) + fabs(si);
    co /= q;
    si /= q;

    if(f > 0.75)
    {
        // draw upper half in full
        R_BeginPolygon(pic, drawflag, true);
            v = centre;         t = '0.5 0.5 0';
            v.x += 0.5 * ringsize.x;    t += '0.5 0.5 0';
            R_PolygonVertex(v, t, rgb, a);

            v = centre;         t = '0.5 0.5 0';
            v.y += 0.5 * ringsize.y;    t += '0.5 -0.5 0';
            R_PolygonVertex(v, t, rgb, a);

            v = centre;         t = '0.5 0.5 0';
            v.x -= 0.5 * ringsize.x;    t -= '0.5 0.5 0';
            R_PolygonVertex(v, t, rgb, a);
        R_EndPolygon();
        // draw clipped lower half as a quad
        R_BeginPolygon(pic, drawflag, true);
            v = centre;         t = '0.5 0.5 0';
            R_PolygonVertex(v, t, rgb, a);

            v = centre;         t = '0.5 0.5 0';
            v.x -= 0.5 * ringsize.x;    t -= '0.5 0.5 0';
            R_PolygonVertex(v, t, rgb, a);

            v = centre;         t = '0.5 0.5 0';
            v.y -= 0.5 * ringsize.y;    t -= '0.5 -0.5 0';
            R_PolygonVertex(v, t, rgb, a);
    }
    else if(f > 0.5)
    {
        // draw upper half in full
        R_BeginPolygon(pic, drawflag, true);
            v = centre;         t = '0.5 0.5 0';
            v.x += 0.5 * ringsize.x;    t += '0.5 0.5 0';
            R_PolygonVertex(v, t, rgb, a);

            v = centre;         t = '0.5 0.5 0';
            v.y += 0.5 * ringsize.y;    t += '0.5 -0.5 0';
            R_PolygonVertex(v, t, rgb, a);

            v = centre;         t = '0.5 0.5 0';
            v.x -= 0.5 * ringsize.x;    t -= '0.5 0.5 0';
            R_PolygonVertex(v, t, rgb, a);
        R_EndPolygon();
        // draw clipped lower half as a triangle
        R_BeginPolygon(pic, drawflag, true);
            v = centre;         t = '0.5 0.5 0';
            R_PolygonVertex(v, t, rgb, a);

            v = centre;         t = '0.5 0.5 0';
            v.x -= 0.5 * ringsize.x;    t -= '0.5 0.5 0';
            R_PolygonVertex(v, t, rgb, a);
    }
    else if(f > 0.25)
    {
        // draw clipped lower half as a quad
        R_BeginPolygon(pic, drawflag, true);
            v = centre;         t = '0.5 0.5 0';
            R_PolygonVertex(v, t, rgb, a);

            v = centre;         t = '0.5 0.5 0';
            v.x += 0.5 * ringsize.x;    t += '0.5 0.5 0';
            R_PolygonVertex(v, t, rgb, a);

            v = centre;         t = '0.5 0.5 0';
            v.y += 0.5 * ringsize.y;    t += '0.5 -0.5 0';
            R_PolygonVertex(v, t, rgb, a);
    }
    else if (f > 0)
    {
        // draw clipped lower half as a triangle
        R_BeginPolygon(pic, drawflag, true);
            v = centre;         t = '0.5 0.5 0';
            R_PolygonVertex(v, t, rgb, a);

            v = centre;         t = '0.5 0.5 0';
            v.x += 0.5 * ringsize.x;    t += '0.5 0.5 0';
            R_PolygonVertex(v, t, rgb, a);
    }
    else
    {
        // Nothing to draw.
        return;
    }

    // The last, moving vertex.
        v = centre;         t = '0.5 0.5 0';
        v.x += co * 0.5 * ringsize.x;   t += co * '0.5 0.5 0';
        v.y += si * 0.5 * ringsize.y;   t += si * '0.5 -0.5 0';
        R_PolygonVertex(v, t, rgb, a);
    R_EndPolygon();
}