コード例 #1
0
ファイル: Program.cs プロジェクト: masums/NetCoreNanoVG
        static void DrawSpinner(NanoVGContext vg, float cx, float cy, float r, float t)
        {
            float    a0 = 0.0f + t * 6;
            float    a1 = 3.14f + t * 6f;
            float    r0 = r;
            float    r1 = r * 0.75f;
            float    ax, ay, bx, by;
            NVGPaint paint;

            NVG.Save(vg);

            NVG.BeginPath(vg);
            NVG.Arc(vg, cx, cy, r0, a0, a1, NVGWinding.NVG_CW);
            NVG.Arc(vg, cx, cy, r1, a1, a0, NVGWinding.NVG_CCW);
            NVG.ClosePath(vg);
            ax    = cx + (float)Math.Cos(a0) * (r0 + r1) * 0.5f;
            ay    = cy + (float)Math.Sin(a0) * (r0 + r1) * 0.5f;
            bx    = cx + (float)Math.Cos(a1) * (r0 + r1) * 0.5f;
            by    = cy + (float)Math.Sign(a1) * (r0 + r1) * 0.5f;
            paint = NVG.LinearGradient(vg, ax, ay, bx, by, NVG.RGBA(0, 0, 0, 0), NVG.RGBA(0, 0, 0, 128));
            NVG.FillPaint(vg, paint);
            NVG.Fill(vg);

            NVG.Restore(vg);
        }
コード例 #2
0
ファイル: Program.cs プロジェクト: masums/NetCoreNanoVG
        static void DrawDropDown(NanoVGContext vg, string text, float x, float y, float w, float h)
        {
            NVGPaint  bg;
            const int icon         = 0x2713;
            float     cornerRadius = 4.0f;

            bg = NVG.LinearGradient(vg, x, y, x, y + h, NVG.RGBA(255, 255, 255, 16), NVG.RGBA(0, 0, 0, 16));
            NVG.BeginPath(vg);
            NVG.RoundedRect(vg, x + 1, y + 1, w - 2, h - 2, cornerRadius - 1);
            NVG.FillPaint(vg, bg);
            NVG.Fill(vg);

            NVG.BeginPath(vg);
            NVG.RoundedRect(vg, x + 0.5f, y + 0.5f, w - 1, h - 1, cornerRadius - 0.5f);
            NVG.StrokeColor(vg, NVG.RGBA(0, 0, 0, 48));
            NVG.Stroke(vg);

            NVG.FontSize(vg, 20.0f);
            NVG.FontFace(vg, "sans");
            NVG.FillColor(vg, NVG.RGBA(255, 255, 255, 160));
            NVG.TextAlign(vg, NVGAlign.NVG_ALIGN_LEFT | NVGAlign.NVG_ALIGN_MIDDLE);
            NVG.Text(vg, x + h * 0.3f, y + h * 0.5f, text, null);

            NVG.FontSize(vg, h * 1.3f);
            NVG.FontFace(vg, "icons");
            NVG.FillColor(vg, NVG.RGBA(255, 255, 255, 64));
            NVG.TextAlign(vg, NVGAlign.NVG_ALIGN_CENTER | NVGAlign.NVG_ALIGN_MIDDLE);
            NVG.Text(vg, x + w - h * 0.5f, y + h * 0.5f, cpToUTF8(icon), null);
        }
コード例 #3
0
ファイル: Program.cs プロジェクト: masums/NetCoreNanoVG
        static unsafe void DrawButton(NanoVGContext vg, int preicon, string text, float x, float y, float w, float h, NVGColor col)
        {
            NVGPaint bg;
            int      icon = 0xE740;
            float    cornerRadius = 4.0f;
            float    tw = 0, iw = 0;

            bg = NVG.LinearGradient(vg, x, y, x, y + h, NVG.RGBA(255, 255, 255, isBlack(col) ? (byte)16 : (byte)32), NVG.RGBA(0, 0, 0, isBlack(col) ? (byte)16 : (byte)32));
            NVG.BeginPath(vg);
            NVG.RoundedRect(vg, x + 1, y + 1, w - 2, h - 2, cornerRadius - 1);
            if (!isBlack(col))
            {
                NVG.FillColor(vg, col);
                NVG.Fill(vg);
            }
            NVG.FillPaint(vg, bg);
            NVG.Fill(vg);

            NVG.BeginPath(vg);
            NVG.RoundedRect(vg, x + 0.5f, y + 0.5f, w - 1, h - 1, cornerRadius - 0.5f);
            NVG.StrokeColor(vg, NVG.RGBA(0, 0, 0, 48));
            NVG.Stroke(vg);

            NVG.FontSize(vg, 20.0f);
            NVG.FontFace(vg, "sans-bold");
            tw = NVG.TextBounds(vg, 0, 0, Encoding.UTF8.GetBytes(text), null, null);
            if (preicon != 0)
            {
                NVG.FontSize(vg, h * 1.3f);
                NVG.FontFace(vg, "icons");
                iw  = NVG.TextBounds(vg, 0, 0, cpToUTF8(icon), null, null);
                iw += h * 0.15f;
            }

            if (preicon != 0)
            {
                NVG.FontSize(vg, h * 1.3f);
                NVG.FontFace(vg, "icons");
                NVG.FillColor(vg, NVG.RGBA(255, 255, 255, 96));
                NVG.TextAlign(vg, NVGAlign.NVG_ALIGN_LEFT | NVGAlign.NVG_ALIGN_MIDDLE);
                NVG.Text(vg, x + w * 0.5f - tw * 0.5f - iw * 0.75f, y + h * 0.5f, cpToUTF8(icon), null);
            }

            NVG.FontSize(vg, 20.0f);
            NVG.FontFace(vg, "sans-bold");
            NVG.TextAlign(vg, NVGAlign.NVG_ALIGN_LEFT | NVGAlign.NVG_ALIGN_MIDDLE);
            NVG.FillColor(vg, NVG.RGBA(0, 0, 0, 160));
            NVG.Text(vg, x + w * 0.5f - tw * 0.5f + iw * 0.25f, y + h * 0.5f - 1, text, null);
            NVG.FillColor(vg, NVG.RGBA(255, 255, 255, 160));
            NVG.Text(vg, x + w * 0.5f - tw * 0.5f + iw * 0.25f, y + h * 0.5f, text, null);
        }
コード例 #4
0
ファイル: Program.cs プロジェクト: masums/NetCoreNanoVG
        static void DrawSlider(NanoVGContext vg, float pos, float x, float y, float w, float h)
        {
            NVGPaint bg, knob;
            float    cy = y + (int)(h * 0.5f);
            float    kr = (int)(h * 0.25f);

            NVG.Save(vg);
            //	NVG.ClearState(vg);

            // Slot
            bg = NVG.BoxGradient(vg, x, cy - 2 + 1, w, 4, 2, 2, NVG.RGBA(0, 0, 0, 32), NVG.RGBA(0, 0, 0, 128));
            NVG.BeginPath(vg);
            NVG.RoundedRect(vg, x, cy - 2, w, 4, 2);
            NVG.FillPaint(vg, bg);
            NVG.Fill(vg);

            // Knob Shadow
            bg = NVG.RadialGradient(vg, x + (int)(pos * w), cy + 1, kr - 3, kr + 3, NVG.RGBA(0, 0, 0, 64), NVG.RGBA(0, 0, 0, 0));
            NVG.BeginPath(vg);
            NVG.Rect(vg, x + (int)(pos * w) - kr - 5, cy - kr - 5, kr * 2 + 5 + 5, kr * 2 + 5 + 5 + 3);
            NVG.Circle(vg, x + (int)(pos * w), cy, kr);
            NVG.PathWinding(vg, NVGSolidity.NVG_HOLE);
            NVG.FillPaint(vg, bg);
            NVG.Fill(vg);

            // Knob
            knob = NVG.LinearGradient(vg, x, cy - kr, x, cy + kr, NVG.RGBA(255, 255, 255, 16), NVG.RGBA(0, 0, 0, 16));
            NVG.BeginPath(vg);
            NVG.Circle(vg, x + (int)(pos * w), cy, kr - 1);
            NVG.FillColor(vg, NVG.RGBA(40, 43, 48, 255));
            NVG.Fill(vg);
            NVG.FillPaint(vg, knob);
            NVG.Fill(vg);

            NVG.BeginPath(vg);
            NVG.Circle(vg, x + (int)(pos * w), cy, kr - 0.5f);
            NVG.StrokeColor(vg, NVG.RGBA(0, 0, 0, 92));
            NVG.Stroke(vg);

            NVG.Restore(vg);
        }
コード例 #5
0
        static void DrawColorWheel(NanoVGContext vg, float x, float y, float w, float h, float t)
        {
            int      i;
            float    r0, r1, ax, ay, bx, by, cx, cy, aeps, r;
            float    hue = (float)Math.Sin(t * 0.12f);
            NVGPaint paint;

            NVG.Save(vg);

            cx   = x + w * 0.5f;
            cy   = y + h * 0.5f;
            r1   = (w < h ? w : h) * 0.5f - 5.0f;
            r0   = r1 - 20.0f;
            aeps = 0.5f / r1;               // half a pixel arc length in radians (2pi cancels out).

            for (i = 0; i < 6; i++)
            {
                float a0 = (float)i / 6.0f * (float)Math.PI * 2.0f - aeps;
                float a1 = (float)(i + 1.0f) / 6.0f * (float)Math.PI * 2.0f + aeps;
                NVG.BeginPath(vg);
                NVG.Arc(vg, cx, cy, r0, a0, a1, NVGWinding.NVG_CW);
                NVG.Arc(vg, cx, cy, r1, a1, a0, NVGWinding.NVG_CCW);
                NVG.ClosePath(vg);
                ax    = cx + (float)Math.Cos(a0) * (r0 + r1) * 0.5f;
                ay    = cy + (float)Math.Sin(a0) * (r0 + r1) * 0.5f;
                bx    = cx + (float)Math.Cos(a1) * (r0 + r1) * 0.5f;
                by    = cy + (float)Math.Sin(a1) * (r0 + r1) * 0.5f;
                paint = NVG.LinearGradient(vg, ax, ay, bx, by, NVG.HSLA(a0 / ((float)Math.PI * 2), 1.0f, 0.55f, 255), NVG.HSLA(a1 / ((float)Math.PI * 2), 1.0f, 0.55f, 255));
                NVG.FillPaint(vg, paint);
                NVG.Fill(vg);
            }

            NVG.BeginPath(vg);
            NVG.Circle(vg, cx, cy, r0 - 0.5f);
            NVG.Circle(vg, cx, cy, r1 + 0.5f);
            NVG.StrokeColor(vg, NVG.RGBA(0, 0, 0, 64));
            NVG.StrokeWidth(vg, 1.0f);
            NVG.Stroke(vg);

            // Selector
            NVG.Save(vg);
            NVG.Translate(vg, cx, cy);
            NVG.Rotate(vg, hue * (float)Math.PI * 2);

            // Marker on
            NVG.StrokeWidth(vg, 2.0f);
            NVG.BeginPath(vg);
            NVG.Rect(vg, r0 - 1, -3, r1 - r0 + 2, 6);
            NVG.StrokeColor(vg, NVG.RGBA(255, 255, 255, 192));
            NVG.Stroke(vg);

            paint = NVG.BoxGradient(vg, r0 - 3, -5, r1 - r0 + 6, 10, 2, 4, NVG.RGBA(0, 0, 0, 128), NVG.RGBA(0, 0, 0, 0));
            NVG.BeginPath(vg);
            NVG.Rect(vg, r0 - 2 - 10, -4 - 10, r1 - r0 + 4 + 20, 8 + 20);
            NVG.Rect(vg, r0 - 2, -4, r1 - r0 + 4, 8);
            NVG.PathWinding(vg, NVGSolidity.NVG_HOLE);
            NVG.FillPaint(vg, paint);
            NVG.Fill(vg);

            // Center triangle
            r  = r0 - 6;
            ax = (float)Math.Cos(120.0f / 180.0f * (float)Math.PI) * r;
            ay = (float)Math.Sin(120.0f / 180.0f * (float)Math.PI) * r;
            bx = (float)Math.Cos(-120.0f / 180.0f * (float)Math.PI) * r;
            by = (float)Math.Sin(-120.0f / 180.0f * (float)Math.PI) * r;
            NVG.BeginPath(vg);
            NVG.MoveTo(vg, r, 0);
            NVG.LineTo(vg, ax, ay);
            NVG.LineTo(vg, bx, by);
            NVG.ClosePath(vg);
            paint = NVG.LinearGradient(vg, r, 0, ax, ay, NVG.HSLA(hue, 1.0f, 0.5f, 255), NVG.RGBA(255, 255, 255, 255));
            NVG.FillPaint(vg, paint);
            NVG.Fill(vg);
            paint = NVG.LinearGradient(vg, (r + ax) * 0.5f, (0 + ay) * 0.5f, bx, by, NVG.RGBA(0, 0, 0, 0), NVG.RGBA(0, 0, 0, 255));
            NVG.FillPaint(vg, paint);
            NVG.Fill(vg);
            NVG.StrokeColor(vg, NVG.RGBA(0, 0, 0, 64));
            NVG.Stroke(vg);

            // Select circle on triangle
            ax = (float)Math.Cos(120.0f / 180.0f * (float)Math.PI) * r * 0.3f;
            ay = (float)Math.Sin(120.0f / 180.0f * (float)Math.PI) * r * 0.4f;
            NVG.StrokeWidth(vg, 2.0f);
            NVG.BeginPath(vg);
            NVG.Circle(vg, ax, ay, 5);
            NVG.StrokeColor(vg, NVG.RGBA(255, 255, 255, 192));
            NVG.Stroke(vg);

            paint = NVG.RadialGradient(vg, ax, ay, 7, 9, NVG.RGBA(0, 0, 0, 64), NVG.RGBA(0, 0, 0, 0));
            NVG.BeginPath(vg);
            NVG.Rect(vg, ax - 20, ay - 20, 40, 40);
            NVG.Circle(vg, ax, ay, 7);
            NVG.PathWinding(vg, NVGSolidity.NVG_HOLE);
            NVG.FillPaint(vg, paint);
            NVG.Fill(vg);

            NVG.Restore(vg);

            NVG.Restore(vg);
        }
コード例 #6
0
ファイル: Program.cs プロジェクト: masums/NetCoreNanoVG
        static unsafe void DrawThumbnails(NanoVGContext vg, float x, float y, float w, float h, int[] images, int nimages, float t)
        {
            float    cornerRadius = 3.0f;
            NVGPaint shadowPaint, imgPaint, fadePaint;
            float    ix, iy, iw, ih;
            float    thumb = 60.0f;
            float    arry = 30.5f;
            int      imgw, imgh;
            float    stackh = (nimages / 2) * (thumb + 10) + 10;
            int      i;
            float    u = (1 + (float)Math.Cos(t * 0.5f)) * 0.5f;
            float    u2 = (1 - (float)Math.Cos(t * 0.2f)) * 0.5f;
            float    scrollh, dv;

            NVG.Save(vg);
            //	nvgClearState(vg);

            // Drop shadow
            shadowPaint = NVG.BoxGradient(vg, x, y + 4, w, h, cornerRadius * 2, 20, NVG.RGBA(0, 0, 0, 128), NVG.RGBA(0, 0, 0, 0));
            NVG.BeginPath(vg);
            NVG.Rect(vg, x - 10, y - 10, w + 20, h + 30);
            NVG.RoundedRect(vg, x, y, w, h, cornerRadius);
            NVG.PathWinding(vg, NVGSolidity.NVG_HOLE);
            NVG.FillPaint(vg, shadowPaint);
            NVG.Fill(vg);

            // Window
            NVG.BeginPath(vg);
            NVG.RoundedRect(vg, x, y, w, h, cornerRadius);
            NVG.MoveTo(vg, x - 10, y + arry);
            NVG.LineTo(vg, x + 1, y + arry - 11);
            NVG.LineTo(vg, x + 1, y + arry + 11);
            NVG.FillColor(vg, NVG.RGBA(200, 200, 200, 255));
            NVG.Fill(vg);

            NVG.Save(vg);
            NVG.Scissor(vg, x, y, w, h);
            NVG.Translate(vg, 0, -(stackh - h) * u);

            dv = 1.0f / (float)(nimages - 1);

            for (i = 0; i < nimages; i++)
            {
                float tx, ty, v, a;
                tx  = x + 10;
                ty  = y + 10;
                tx += (i % 2) * (thumb + 10);
                ty += (i / 2) * (thumb + 10);
                NVG.ImageSize(vg, images[i], &imgw, &imgh);
                if (imgw < imgh)
                {
                    iw = thumb;
                    ih = iw * (float)imgh / (float)imgw;
                    ix = 0;
                    iy = -(ih - thumb) * 0.5f;
                }
                else
                {
                    ih = thumb;
                    iw = ih * (float)imgw / (float)imgh;
                    ix = -(iw - thumb) * 0.5f;
                    iy = 0;
                }

                v = i * dv;
                a = Math.Clamp((u2 - v) / dv, 0, 1);

                if (a < 1.0f)
                {
                    DrawSpinner(vg, tx + thumb / 2, ty + thumb / 2, thumb * 0.25f, t);
                }

                imgPaint = NVG.ImagePattern(vg, tx + ix, ty + iy, iw, ih, 0.0f / 180.0f * NVG_PI, images[i], a);
                NVG.BeginPath(vg);
                NVG.RoundedRect(vg, tx, ty, thumb, thumb, 5);
                NVG.FillPaint(vg, imgPaint);
                NVG.Fill(vg);

                shadowPaint = NVG.BoxGradient(vg, tx - 1, ty, thumb + 2, thumb + 2, 5, 3, NVG.RGBA(0, 0, 0, 128), NVG.RGBA(0, 0, 0, 0));
                NVG.BeginPath(vg);
                NVG.Rect(vg, tx - 5, ty - 5, thumb + 10, thumb + 10);
                NVG.RoundedRect(vg, tx, ty, thumb, thumb, 6);
                NVG.PathWinding(vg, NVGSolidity.NVG_HOLE);
                NVG.FillPaint(vg, shadowPaint);
                NVG.Fill(vg);

                NVG.BeginPath(vg);
                NVG.RoundedRect(vg, tx + 0.5f, ty + 0.5f, thumb - 1, thumb - 1, 4 - 0.5f);
                NVG.StrokeWidth(vg, 1.0f);
                NVG.StrokeColor(vg, NVG.RGBA(255, 255, 255, 192));
                NVG.Stroke(vg);
            }
            NVG.Restore(vg);

            // Hide fades
            fadePaint = NVG.LinearGradient(vg, x, y, x, y + 6, NVG.RGBA(200, 200, 200, 255), NVG.RGBA(200, 200, 200, 0));
            NVG.BeginPath(vg);
            NVG.Rect(vg, x + 4, y, w - 8, 6);
            NVG.FillPaint(vg, fadePaint);
            NVG.Fill(vg);

            fadePaint = NVG.LinearGradient(vg, x, y + h, x, y + h - 6, NVG.RGBA(200, 200, 200, 255), NVG.RGBA(200, 200, 200, 0));
            NVG.BeginPath(vg);
            NVG.Rect(vg, x + 4, y + h - 6, w - 8, 6);
            NVG.FillPaint(vg, fadePaint);
            NVG.Fill(vg);

            // Scroll bar
            shadowPaint = NVG.BoxGradient(vg, x + w - 12 + 1, y + 4 + 1, 8, h - 8, 3, 4, NVG.RGBA(0, 0, 0, 32), NVG.RGBA(0, 0, 0, 92));
            NVG.BeginPath(vg);
            NVG.RoundedRect(vg, x + w - 12, y + 4, 8, h - 8, 3);
            NVG.FillPaint(vg, shadowPaint);
            //	NVG.FillColor(vg, NVG.RGBA(255,0,0,128));
            NVG.Fill(vg);

            scrollh     = (h / stackh) * (h - 8);
            shadowPaint = NVG.BoxGradient(vg, x + w - 12 - 1, y + 4 + (h - 8 - scrollh) * u - 1, 8, scrollh, 3, 4, NVG.RGBA(220, 220, 220, 255), NVG.RGBA(128, 128, 128, 255));
            NVG.BeginPath(vg);
            NVG.RoundedRect(vg, x + w - 12 + 1, y + 4 + 1 + (h - 8 - scrollh) * u, 8 - 2, scrollh - 2, 2);
            NVG.FillPaint(vg, shadowPaint);
            //	NVG.FillColor(vg, NVG.RGBA(0,0,0,128));
            NVG.Fill(vg);

            NVG.Restore(vg);
        }
コード例 #7
0
ファイル: Program.cs プロジェクト: masums/NetCoreNanoVG
        static void DrawGraph(NanoVGContext vg, float x, float y, float w, float h, float t)
        {
            NVGPaint bg;

            float[] samples = new float[6];
            float[] sx      = new float[6], sy = new float[6];
            float   dx      = w / 5.0f;
            int     i;

            samples[0] = (1 + (float)Math.Sin(t * 1.2345f + Math.Cos(t * 0.33457f) * 0.44f)) * 0.5f;
            samples[1] = (1 + (float)Math.Sin(t * 0.68363f + Math.Cos(t * 1.3f) * 1.55f)) * 0.5f;
            samples[2] = (1 + (float)Math.Sin(t * 1.1642f + Math.Cos(t * 0.33457) * 1.24f)) * 0.5f;
            samples[3] = (1 + (float)Math.Sin(t * 0.56345f + Math.Cos(t * 1.63f) * 0.14f)) * 0.5f;
            samples[4] = (1 + (float)Math.Sin(t * 1.6245f + Math.Cos(t * 0.254f) * 0.3f)) * 0.5f;
            samples[5] = (1 + (float)Math.Sin(t * 0.345f + Math.Cos(t * 0.03f) * 0.6f)) * 0.5f;

            for (i = 0; i < 6; i++)
            {
                sx[i] = x + i * dx;
                sy[i] = y + h * samples[i] * 0.8f;
            }

            // Graph background
            bg = NVG.LinearGradient(vg, x, y, x, y + h, NVG.RGBA(0, 160, 192, 0), NVG.RGBA(0, 160, 192, 64));
            NVG.BeginPath(vg);
            NVG.MoveTo(vg, sx[0], sy[0]);
            for (i = 1; i < 6; i++)
            {
                NVG.BezierTo(vg, sx[i - 1] + dx * 0.5f, sy[i - 1], sx[i] - dx * 0.5f, sy[i], sx[i], sy[i]);
            }
            NVG.LineTo(vg, x + w, y + h);
            NVG.LineTo(vg, x, y + h);
            NVG.FillPaint(vg, bg);
            NVG.Fill(vg);

            // Graph line
            NVG.BeginPath(vg);
            NVG.MoveTo(vg, sx[0], sy[0] + 2);
            for (i = 1; i < 6; i++)
            {
                NVG.BezierTo(vg, sx[i - 1] + dx * 0.5f, sy[i - 1] + 2, sx[i] - dx * 0.5f, sy[i] + 2, sx[i], sy[i] + 2);
            }
            NVG.StrokeColor(vg, NVG.RGBA(0, 0, 0, 32));
            NVG.StrokeWidth(vg, 3.0f);
            NVG.Stroke(vg);

            NVG.BeginPath(vg);
            NVG.MoveTo(vg, sx[0], sy[0]);
            for (i = 1; i < 6; i++)
            {
                NVG.BezierTo(vg, sx[i - 1] + dx * 0.5f, sy[i - 1], sx[i] - dx * 0.5f, sy[i], sx[i], sy[i]);
            }
            NVG.StrokeColor(vg, NVG.RGBA(0, 160, 192, 255));
            NVG.StrokeWidth(vg, 3.0f);
            NVG.Stroke(vg);

            // Graph sample pos
            for (i = 0; i < 6; i++)
            {
                bg = NVG.RadialGradient(vg, sx[i], sy[i] + 2, 3.0f, 8.0f, NVG.RGBA(0, 0, 0, 32), NVG.RGBA(0, 0, 0, 0));
                NVG.BeginPath(vg);
                NVG.Rect(vg, sx[i] - 10, sy[i] - 10 + 2, 20, 20);
                NVG.FillPaint(vg, bg);
                NVG.Fill(vg);
            }

            NVG.BeginPath(vg);
            for (i = 0; i < 6; i++)
            {
                NVG.Circle(vg, sx[i], sy[i], 4.0f);
            }
            NVG.FillColor(vg, NVG.RGBA(0, 160, 192, 255));
            NVG.Fill(vg);
            NVG.BeginPath(vg);
            for (i = 0; i < 6; i++)
            {
                NVG.Circle(vg, sx[i], sy[i], 2.0f);
            }
            NVG.FillColor(vg, NVG.RGBA(220, 220, 220, 255));
            NVG.Fill(vg);

            NVG.StrokeWidth(vg, 1.0f);
        }
コード例 #8
0
ファイル: Program.cs プロジェクト: masums/NetCoreNanoVG
        static void DrawEyes(NanoVGContext vg, float x, float y, float w, float h, float mx, float my, float t)
        {
            NVGPaint gloss, bg;
            float    ex = w * 0.23f;
            float    ey = h * 0.5f;
            float    lx = x + ex;
            float    ly = y + ey;
            float    rx = x + w - ex;
            float    ry = y + ey;
            float    dx, dy, d;
            float    br    = (ex < ey ? ex : ey) * 0.5f;
            float    blink = 1 - (float)(Math.Pow(Math.Sin(t * 0.5f), 200) * 0.8f);

            bg = NVG.LinearGradient(vg, x, y + h * 0.5f, x + w * 0.1f, y + h, NVG.RGBA(0, 0, 0, 32), NVG.RGBA(0, 0, 0, 16));
            NVG.BeginPath(vg);
            NVG.Ellipse(vg, lx + 3.0f, ly + 16.0f, ex, ey);
            NVG.Ellipse(vg, rx + 3.0f, ry + 16.0f, ex, ey);
            NVG.FillPaint(vg, bg);
            NVG.Fill(vg);

            bg = NVG.LinearGradient(vg, x, y + h * 0.25f, x + w * 0.1f, y + h, NVG.RGBA(220, 220, 220, 255), NVG.RGBA(128, 128, 128, 255));
            NVG.BeginPath(vg);
            NVG.Ellipse(vg, lx, ly, ex, ey);
            NVG.Ellipse(vg, rx, ry, ex, ey);
            NVG.FillPaint(vg, bg);
            NVG.Fill(vg);

            dx = (mx - rx) / (ex * 10);
            dy = (my - ry) / (ey * 10);
            d  = (float)Math.Sqrt(dx * dx + dy * dy);
            if (d > 1.0f)
            {
                dx /= d; dy /= d;
            }
            dx *= ex * 0.4f;
            dy *= ey * 0.5f;
            NVG.BeginPath(vg);
            NVG.Ellipse(vg, lx + dx, ly + dy + ey * 0.25f * (1 - blink), br, br * blink);
            NVG.FillColor(vg, NVG.RGBA(32, 32, 32, 255));
            NVG.Fill(vg);

            dx = (mx - rx) / (ex * 10);
            dy = (my - ry) / (ey * 10);
            d  = (float)Math.Sqrt(dx * dx + dy * dy);
            if (d > 1.0f)
            {
                dx /= d; dy /= d;
            }
            dx *= ex * 0.4f;
            dy *= ey * 0.5f;
            NVG.BeginPath(vg);
            NVG.Ellipse(vg, rx + dx, ry + dy + ey * 0.25f * (1 - blink), br, br * blink);
            NVG.FillColor(vg, NVG.RGBA(32, 32, 32, 255));
            NVG.Fill(vg);

            gloss = NVG.RadialGradient(vg, lx - ex * 0.25f, ly - ey * 0.5f, ex * 0.1f, ex * 0.75f, NVG.RGBA(255, 255, 255, 128), NVG.RGBA(255, 255, 255, 0));
            NVG.BeginPath(vg);
            NVG.Ellipse(vg, lx, ly, ex, ey);
            NVG.FillPaint(vg, gloss);
            NVG.Fill(vg);

            gloss = NVG.RadialGradient(vg, rx - ex * 0.25f, ry - ey * 0.5f, ex * 0.1f, ex * 0.75f, NVG.RGBA(255, 255, 255, 128), NVG.RGBA(255, 255, 255, 0));
            NVG.BeginPath(vg);
            NVG.Ellipse(vg, rx, ry, ex, ey);
            NVG.FillPaint(vg, gloss);
            NVG.Fill(vg);
        }