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);
}
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);
}
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);
}
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);
}