public override void DrawArcRing(Vec2 center, float radius, float innerRadius, float startAngle, float endAngle, Col color)
{
var ct = Aspect.Adjust(center);
var r = Aspect.Adjust(radius);
var ri = Aspect.Adjust(innerRadius);
if (endAngle < startAngle)
{
var c = startAngle;
startAngle = endAngle;
endAngle = startAngle;
}
if (ri < float.Epsilon)
{
DrawArc(center, radius, startAngle, endAngle, color);
return;
}
// Make sure that inner radius is smaller than the main radius
if (ri > r)
{
ri = r - (ri - r);
}
SetPass(0);
GLBegin(GL.TRIANGLES);
GLColor(color);
startAngle *= DEG2RAD;
float angle = startAngle;
endAngle = endAngle * DEG2RAD;
float incr = (endAngle - angle) / (float)CircleResolution;
while (angle < endAngle)
{
float s = (float)System.Math.Sin(Utils.Clamp(angle, startAngle, endAngle));
float c = (float)System.Math.Cos(Utils.Clamp(angle, startAngle, endAngle));
float si = (float)System.Math.Sin(Utils.Clamp(angle + incr, startAngle, endAngle));
float ci = (float)System.Math.Cos(Utils.Clamp(angle + incr, startAngle, endAngle));
Vertex3(ct.x + s * r, ct.y + c * r);
Vertex3(ct.x + si * r, ct.y + ci * r);
Vertex3(ct.x + s * ri, ct.y + c * ri);
Vertex3(ct.x + s * ri, ct.y + c * ri);
Vertex3(ct.x + si * r, ct.y + ci * r);
Vertex3(ct.x + si * ri, ct.y + ci * ri);
angle += incr;
}
GLEnd();
}
public override void DrawCircle(Vec2 center, float radius, Col color)
{
center = Aspect.Adjust(center);
radius = Aspect.Adjust(radius);
SetPass(0);
GLBegin(GL.TRIANGLES);
GLColor(color);
DrawCircleCommands(center, radius, color);
GLEnd();
}
public override void DrawTriangle(Vec2 a, Vec2 b, Vec2 c, Col color)
{
a = Aspect.Adjust(a);
b = Aspect.Adjust(b);
c = Aspect.Adjust(c);
SetPass(0);
// Draw lines
GLBegin(GL.TRIANGLES);
GLColor(color);
Vertex3(a.x, a.y);
Vertex3(b.x, b.y);
Vertex3(c.x, c.y);
GLEnd();
}
public override void DrawLine(Vec2 p0, Vec2 p1, float width, Col color, bool isRounded)
{
p0 = Aspect.Adjust(p0);
p1 = Aspect.Adjust(p1);
width = Aspect.Adjust(width);
var dir = p1 - p0;
dir.Normalize();
var perpendicular = Vec2.Perpendicular(dir);
perpendicular.Normalize();
float halfWidth = width * 0.5f;
var start0 = p0 + perpendicular * halfWidth;
var start1 = p0 - perpendicular * halfWidth;
var end0 = p1 + perpendicular * halfWidth;
var end1 = p1 - perpendicular * halfWidth;
// draw circles
var res = CircleResolution;
CircleResolution = 8;
CircleResolution = res;
SetPass(0);
GLBegin(GL.TRIANGLES);
GLColor(color);
if (isRounded)
{
DrawCircleCommands(p0, halfWidth, color);
DrawCircleCommands(p1, halfWidth, color);
}
Vertex3(start0.x, start0.y);
Vertex3(end0.x, end0.y);
Vertex3(end1.x, end1.y);
Vertex3(start0.x, start0.y);
Vertex3(end1.x, end1.y);
Vertex3(start1.x, start1.y);
GLEnd();
}
public override void DrawArc(Vec2 center, float radius, float startAngle, float endAngle, Col color)
{
if (endAngle < startAngle)
{
var c = startAngle;
startAngle = endAngle;
endAngle = startAngle;
}
center = Aspect.Adjust(center);
radius = Aspect.Adjust(radius);
startAngle *= DEG2RAD;
float angle = DEG2RAD;
endAngle = endAngle * DEG2RAD;
float incr = (endAngle - angle) / (float)CircleResolution;
SetPass(0);
GLBegin(GL.TRIANGLES);
GLColor(color);
while (angle < endAngle)
{
Vertex3(center.x, center.y);
Vertex3(
center.x + (float)System.Math.Sin(Utils.Clamp(angle, startAngle, endAngle)) * radius,
center.y + (float)System.Math.Cos(Utils.Clamp(angle, startAngle, endAngle)) * radius);
Vertex3(
center.x + (float)System.Math.Sin(Utils.Clamp(angle + incr, startAngle, endAngle)) * radius,
center.y + (float)System.Math.Cos(Utils.Clamp(angle + incr, startAngle, endAngle)) * radius);
angle += incr;
}
GLEnd();
}
