public static void drawLines(NvgContext vg, float x, float y, float w, float h, float t)
{
int i, j;
float pad = 5.0f, s = w / 9.0f - pad * 2;
float[] pts = new float[4 * 2];
float fx, fy;
LineCap[] joins = new LineCap[] { LineCap.Miter, LineCap.Round, LineCap.Bevel };
LineCap[] caps = new LineCap[] { LineCap.Butt, LineCap.Round, LineCap.Square };
vg.Save();
pts[0] = -s * 0.25f + (float)Math.Cos(t * 0.3f) * s * 0.5f;
pts[1] = (float)Math.Sin(t * 0.3f) * s * 0.5f;
pts[2] = -s * 0.25f;
pts[3] = 0;
pts[4] = s * 0.25f;
pts[5] = 0;
pts[6] = s * 0.25f + (float)Math.Cos(-t * 0.3f) * s * 0.5f;
pts[7] = (float)Math.Sin(-t * 0.3f) * s * 0.5f;
for (i = 0; i < 3; i++)
{
for (j = 0; j < 3; j++)
{
fx = x + s * 0.5f + (i * 3 + j) / 9.0f * w + pad;
fy = y - s * 0.5f + pad;
vg.LineCap(caps[i]);
vg.LineJoin(joins[j]);
vg.StrokeWidth(s * 0.3f);
vg.StrokeColor(new Color(0, 0, 0, 160));
vg.BeginPath();
vg.MoveTo(fx + pts[0], fy + pts[1]);
vg.LineTo(fx + pts[2], fy + pts[3]);
vg.LineTo(fx + pts[4], fy + pts[5]);
vg.LineTo(fx + pts[6], fy + pts[7]);
vg.Stroke();
vg.LineCap(LineCap.Butt);
vg.LineJoin(LineCap.Bevel);
vg.StrokeWidth(1.0f);
vg.StrokeColor(new Color(0, 192, 255, 255));
vg.BeginPath();
vg.MoveTo(fx + pts[0], fy + pts[1]);
vg.LineTo(fx + pts[2], fy + pts[3]);
vg.LineTo(fx + pts[4], fy + pts[5]);
vg.LineTo(fx + pts[6], fy + pts[7]);
vg.Stroke();
}
}
vg.Restore();
}
public static void drawCaps(NvgContext vg, float x, float y, float width)
{
int i;
LineCap[] caps = new[] { LineCap.Butt, LineCap.Round, LineCap.Square };
float lineWidth = 8.0f;
vg.Save();
vg.BeginPath();
vg.Rect(x - lineWidth / 2, y, width + lineWidth, 40);
vg.FillColor(new Color(255, 255, 255, 32));
vg.Fill();
vg.BeginPath();
vg.Rect(x, y, width, 40);
vg.FillColor(new Color(255, 255, 255, 32));
vg.Fill();
vg.StrokeWidth(lineWidth);
for (i = 0; i < 3; i++)
{
vg.LineCap(caps[i]);
vg.StrokeColor(new Color(0, 0, 0, 255));
vg.BeginPath();
vg.MoveTo(x, y + i * 10 + 5);
vg.LineTo(x + width, y + i * 10 + 5);
vg.Stroke();
}
vg.Restore();
}
public static void drawWidths(NvgContext vg, float x, float y, float width)
{
int i;
vg.Save();
vg.StrokeColor(new Color(0, 0, 0, 255));
for (i = 0; i < 20; i++)
{
float w = (i + 0.5f) * 0.1f;
vg.StrokeWidth(w);
vg.BeginPath();
vg.MoveTo(x, y);
vg.LineTo(x + width, y + width * 0.3f);
vg.Stroke();
y += 10;
}
vg.Restore();
}
public static void drawColorwheel(NvgContext 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);
Paint paint;
vg.Save();
/* vg.BeginPath();
* vg.Rect(x,y,w,h);
* vg.FillColor(new Color(255,0,0,128));
* vg.Fill();*/
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;
vg.BeginPath();
vg.Arc(cx, cy, r0, a0, a1, Winding.ClockWise);
vg.Arc(cx, cy, r1, a1, a0, Winding.CounterClockWise);
vg.ClosePath();
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 = vg.LinearGradient(ax, ay, bx, by, NvgUtility.HSLA(a0 / ((float)Math.PI * 2), 1.0f, 0.55f, 255), NvgUtility.HSLA(a1 / ((float)Math.PI * 2), 1.0f, 0.55f, 255));
vg.FillPaint(paint);
vg.Fill();
}
vg.BeginPath();
vg.Circle(cx, cy, r0 - 0.5f);
vg.Circle(cx, cy, r1 + 0.5f);
vg.StrokeColor(new Color(0, 0, 0, 64));
vg.StrokeWidth(1.0f);
vg.Stroke();
// Selector
vg.Save();
vg.Translate(cx, cy);
vg.Rotate(hue * (float)Math.PI * 2);
// Marker on
vg.StrokeWidth(2.0f);
vg.BeginPath();
vg.Rect(r0 - 1, -3, r1 - r0 + 2, 6);
vg.StrokeColor(new Color(255, 255, 255, 192));
vg.Stroke();
paint = vg.BoxGradient(r0 - 3, -5, r1 - r0 + 6, 10, 2, 4, new Color(0, 0, 0, 128), new Color(0, 0, 0, 0));
vg.BeginPath();
vg.Rect(r0 - 2 - 10, -4 - 10, r1 - r0 + 4 + 20, 8 + 20);
vg.Rect(r0 - 2, -4, r1 - r0 + 4, 8);
vg.PathWinding(Solidity.Hole);
vg.FillPaint(paint);
vg.Fill();
// 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;
vg.BeginPath();
vg.MoveTo(r, 0);
vg.LineTo(ax, ay);
vg.LineTo(bx, by);
vg.ClosePath();
paint = vg.LinearGradient(r, 0, ax, ay, NvgUtility.HSLA(hue, 1.0f, 0.5f, 255), new Color(255, 255, 255, 255));
vg.FillPaint(paint);
vg.Fill();
paint = vg.LinearGradient((r + ax) * 0.5f, (0 + ay) * 0.5f, bx, by, new Color(0, 0, 0, 0), new Color(0, 0, 0, 255));
vg.FillPaint(paint);
vg.Fill();
vg.StrokeColor(new Color(0, 0, 0, 64));
vg.Stroke();
// 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;
vg.StrokeWidth(2.0f);
vg.BeginPath();
vg.Circle(ax, ay, 5);
vg.StrokeColor(new Color(255, 255, 255, 192));
vg.Stroke();
paint = vg.RadialGradient(ax, ay, 7, 9, new Color(0, 0, 0, 64), new Color(0, 0, 0, 0));
vg.BeginPath();
vg.Rect(ax - 20, ay - 20, 40, 40);
vg.Circle(ax, ay, 7);
vg.PathWinding(Solidity.Hole);
vg.FillPaint(paint);
vg.Fill();
vg.Restore();
vg.Restore();
}
public static void drawThumbnails(NvgContext vg, float x, float y, float w, float h, int[] images, float t)
{
float cornerRadius = 3.0f;
Paint shadowPaint, imgPaint, fadePaint;
float ix, iy, iw, ih;
float thumb = 60.0f;
float arry = 30.5f;
int imgw, imgh;
float stackh = (images.Length / 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;
vg.Save();
// ClearState(vg);
// Drop shadow
shadowPaint = vg.BoxGradient(x, y + 4, w, h, cornerRadius * 2, 20, new Color(0, 0, 0, 128), new Color(0, 0, 0, 0));
vg.BeginPath();
vg.Rect(x - 10, y - 10, w + 20, h + 30);
vg.RoundedRect(x, y, w, h, cornerRadius);
vg.PathWinding(Solidity.Hole);
vg.FillPaint(shadowPaint);
vg.Fill();
// Window
vg.BeginPath();
vg.RoundedRect(x, y, w, h, cornerRadius);
vg.MoveTo(x - 10, y + arry);
vg.LineTo(x + 1, y + arry - 11);
vg.LineTo(x + 1, y + arry + 11);
vg.FillColor(new Color(200, 200, 200, 255));
vg.Fill();
vg.Save();
vg.Scissor(x, y, w, h);
vg.Translate(0, -(stackh - h) * u);
dv = 1.0f / (float)(images.Length - 1);
for (i = 0; i < images.Length; i++)
{
float tx, ty, v, a;
tx = x + 10;
ty = y + 10;
tx += (i % 2) * (thumb + 10);
ty += (i / 2) * (thumb + 10);
vg.ImageSize(images[i], out imgw, out 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 = clampf((u2 - v) / dv, 0, 1);
if (a < 1.0f)
{
drawSpinner(vg, tx + thumb / 2, ty + thumb / 2, thumb * 0.25f, t);
}
imgPaint = vg.ImagePattern(tx + ix, ty + iy, iw, ih, 0.0f / 180.0f * (float)Math.PI, images[i], a);
vg.BeginPath();
vg.RoundedRect(tx, ty, thumb, thumb, 5);
vg.FillPaint(imgPaint);
vg.Fill();
shadowPaint = vg.BoxGradient(tx - 1, ty, thumb + 2, thumb + 2, 5, 3, new Color(0, 0, 0, 128), new Color(0, 0, 0, 0));
vg.BeginPath();
vg.Rect(tx - 5, ty - 5, thumb + 10, thumb + 10);
vg.RoundedRect(tx, ty, thumb, thumb, 6);
vg.PathWinding(Solidity.Hole);
vg.FillPaint(shadowPaint);
vg.Fill();
vg.BeginPath();
vg.RoundedRect(tx + 0.5f, ty + 0.5f, thumb - 1, thumb - 1, 4 - 0.5f);
vg.StrokeWidth(1.0f);
vg.StrokeColor(new Color(255, 255, 255, 192));
vg.Stroke();
}
vg.Restore();
// Hide fades
fadePaint = vg.LinearGradient(x, y, x, y + 6, new Color(200, 200, 200, 255), new Color(200, 200, 200, 0));
vg.BeginPath();
vg.Rect(x + 4, y, w - 8, 6);
vg.FillPaint(fadePaint);
vg.Fill();
fadePaint = vg.LinearGradient(x, y + h, x, y + h - 6, new Color(200, 200, 200, 255), new Color(200, 200, 200, 0));
vg.BeginPath();
vg.Rect(x + 4, y + h - 6, w - 8, 6);
vg.FillPaint(fadePaint);
vg.Fill();
// Scroll bar
shadowPaint = vg.BoxGradient(x + w - 12 + 1, y + 4 + 1, 8, h - 8, 3, 4, new Color(0, 0, 0, 32), new Color(0, 0, 0, 92));
vg.BeginPath();
vg.RoundedRect(x + w - 12, y + 4, 8, h - 8, 3);
vg.FillPaint(shadowPaint);
// vg.FillColor(new Color(255,0,0,128));
vg.Fill();
scrollh = (h / stackh) * (h - 8);
shadowPaint = vg.BoxGradient(x + w - 12 - 1, y + 4 + (h - 8 - scrollh) * u - 1, 8, scrollh, 3, 4, new Color(220, 220, 220, 255), new Color(128, 128, 128, 255));
vg.BeginPath();
vg.RoundedRect(x + w - 12 + 1, y + 4 + 1 + (h - 8 - scrollh) * u, 8 - 2, scrollh - 2, 2);
vg.FillPaint(shadowPaint);
// vg.FillColor(new Color(0,0,0,128));
vg.Fill();
vg.Restore();
}
public static void drawGraph(NvgContext vg, float x, float y, float w, float h, float t)
{
Paint 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 + (float)Math.Cos(t * 0.33457f) * 0.44f)) * 0.5f;
samples[1] = (1 + (float)Math.Sin(t * 0.68363f + (float)Math.Cos(t * 1.3f) * 1.55f)) * 0.5f;
samples[2] = (1 + (float)Math.Sin(t * 1.1642f + (float)Math.Cos(t * 0.33457) * 1.24f)) * 0.5f;
samples[3] = (1 + (float)Math.Sin(t * 0.56345f + (float)Math.Cos(t * 1.63f) * 0.14f)) * 0.5f;
samples[4] = (1 + (float)Math.Sin(t * 1.6245f + (float)Math.Cos(t * 0.254f) * 0.3f)) * 0.5f;
samples[5] = (1 + (float)Math.Sin(t * 0.345f + (float)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 = vg.LinearGradient(x, y, x, y + h, new Color(0, 160, 192, 0), new Color(0, 160, 192, 64));
vg.BeginPath();
vg.MoveTo(sx[0], sy[0]);
for (i = 1; i < 6; i++)
{
vg.BezierTo(sx[i - 1] + dx * 0.5f, sy[i - 1], sx[i] - dx * 0.5f, sy[i], sx[i], sy[i]);
}
vg.LineTo(x + w, y + h);
vg.LineTo(x, y + h);
vg.FillPaint(bg);
vg.Fill();
// Graph line
vg.BeginPath();
vg.MoveTo(sx[0], sy[0] + 2);
for (i = 1; i < 6; i++)
{
vg.BezierTo(sx[i - 1] + dx * 0.5f, sy[i - 1] + 2, sx[i] - dx * 0.5f, sy[i] + 2, sx[i], sy[i] + 2);
}
vg.StrokeColor(new Color(0, 0, 0, 32));
vg.StrokeWidth(3.0f);
vg.Stroke();
vg.BeginPath();
vg.MoveTo(sx[0], sy[0]);
for (i = 1; i < 6; i++)
{
vg.BezierTo(sx[i - 1] + dx * 0.5f, sy[i - 1], sx[i] - dx * 0.5f, sy[i], sx[i], sy[i]);
}
vg.StrokeColor(new Color(0, 160, 192, 255));
vg.StrokeWidth(3.0f);
vg.Stroke();
// Graph sample pos
for (i = 0; i < 6; i++)
{
bg = vg.RadialGradient(sx[i], sy[i] + 2, 3.0f, 8.0f, new Color(0, 0, 0, 32), new Color(0, 0, 0, 0));
vg.BeginPath();
vg.Rect(sx[i] - 10, sy[i] - 10 + 2, 20, 20);
vg.FillPaint(bg);
vg.Fill();
}
vg.BeginPath();
for (i = 0; i < 6; i++)
{
vg.Circle(sx[i], sy[i], 4.0f);
}
vg.FillColor(new Color(0, 160, 192, 255));
vg.Fill();
vg.BeginPath();
for (i = 0; i < 6; i++)
{
vg.Circle(sx[i], sy[i], 2.0f);
}
vg.FillColor(new Color(220, 220, 220, 255));
vg.Fill();
vg.StrokeWidth(1.0f);
}