protected override CCDrawNode Draw()
{
var node = new CCDrawNode();
var color = GameColors.WallsColor4B;
var basisX = this.Position == WallPosition.Left ? 0 : 6;
var vertexX = this.Position == WallPosition.Left ? 6 : 0;
var numberOfTriangles = this.Height / 12;
var triangles = new List <CCV3F_C4B>();
for (int i = 0; i < numberOfTriangles; i++)
{
var y = i * 12;
triangles.AddRange(new [] {
new CCV3F_C4B(new CCPoint(basisX, y), color),
new CCV3F_C4B(new CCPoint(vertexX, y + 12 / 2), color),
new CCV3F_C4B(new CCPoint(basisX, y + 12), color),
});
}
node.DrawTriangleList(triangles.ToArray());
node.PositionX = this.Position == WallPosition.Left ? 20 : ScreenRight - 26;
return(node);
}
/*
* TL TR
* 0----1 0,1,2,3 = index offsets for vertex indices
* | /|
* | / |
* | / |
* |/ |
* 2----3
* BL BR
*/
void GenerateStripes(CCSize textureSizeInPixels, CCColor4B c2, int numberOfStripes)
{
var gradientNode = new CCDrawNode();
// Layer 1: Stripes
CCV3F_C4B[] vertices = new CCV3F_C4B[numberOfStripes * 6];
var textureWidth = textureSizeInPixels.Width;
var textureHeight = textureSizeInPixels.Height;
int nVertices = 0;
float x1 = -textureHeight;
float x2;
float y1 = textureHeight;
float y2 = 0;
float dx = textureWidth / numberOfStripes * 2;
float stripeWidth = dx / 2;
for (int i = 0; i < numberOfStripes; i++)
{
x2 = x1 + textureHeight;
// Left triangle TL - 0
vertices[nVertices].Vertices = new CCVertex3F(x1, y1, 0);
vertices[nVertices++].Colors = c2;
// Left triangle BL - 2
vertices[nVertices].Vertices = new CCVertex3F(x1 + stripeWidth, y1, 0);
vertices[nVertices++].Colors = c2;
// Left triangle TR - 1
vertices[nVertices].Vertices = new CCVertex3F(x2, y2, 0);
vertices[nVertices++].Colors = c2;
// Right triangle BL - 2
vertices[nVertices].Vertices = vertices[nVertices - 2].Vertices;
vertices[nVertices++].Colors = c2;
// Right triangle BR - 3
vertices[nVertices].Vertices = vertices[nVertices - 2].Vertices;
vertices[nVertices++].Colors = c2;
// Right triangle TR - 1
vertices[nVertices].Vertices = new CCVertex3F(x2 + stripeWidth, y2, 0);
vertices[nVertices++].Colors = c2;
x1 += dx;
}
gradientNode.DrawTriangleList(vertices);
gradientNode.Visit();
}
void TriangleList()
{
CCV3F_C4B[] verts = new CCV3F_C4B[] {
// First triangle:
new CCV3F_C4B(new CCPoint(0, 0), CCColor4B.White),
new CCV3F_C4B(new CCPoint(30, 60), CCColor4B.White),
new CCV3F_C4B(new CCPoint(60, 0), CCColor4B.White),
// second triangle, each point has different colors:
new CCV3F_C4B(new CCPoint(90, 0), CCColor4B.Yellow),
new CCV3F_C4B(new CCPoint(120, 60), CCColor4B.Red),
new CCV3F_C4B(new CCPoint(150, 0), CCColor4B.Blue)
};
drawNode.DrawTriangleList(verts);
}
public override void OnEnter()
{
base.OnEnter();
CreateGeometry();
var draw = new CCDrawNode();
draw.BlendFunc = CCBlendFunc.NonPremultiplied;
AddChild(draw, 10);
draw.DrawTriangleList(drawBuffer.TriangleVertices.ToArray());
draw.DrawLineList(drawBuffer.LineVertices.ToArray());
}
public override void OnEnter()
{
base.OnEnter();
CCSize windowSize = Layer.VisibleBoundsWorldspace.Size;
var line = new CCDrawNode();
line.DrawLine(new CCPoint(0, windowSize.Height / 2), new CCPoint(windowSize.Width, windowSize.Height / 2), 10);
AddChild(line, 0);
byte alpha = 100; // 255 is full opacity
var green = new CCColor4B(0, 255, 0, alpha);
CCV3F_C4B[] verts = new CCV3F_C4B[] {
new CCV3F_C4B(new CCPoint(0, 0), green),
new CCV3F_C4B(new CCPoint(30, 60), green),
new CCV3F_C4B(new CCPoint(60, 0), green)
};
triangleList1.DrawTriangleList(verts);
triangleList1.Position = windowSize.Center;
triangleList1.PositionX -= windowSize.Width / 4;
triangleList1.PositionY -= triangleList1.ContentSize.Center.Y;
// Because the default BlendFunc of our DrawNode is AlphaBlend we need
// to pass the colors as pre multiplied alpha.
var greenPreMultiplied = green;
greenPreMultiplied.G = (byte)(greenPreMultiplied.G * alpha / 255.0f);
verts[0].Colors = greenPreMultiplied;
verts[1].Colors = greenPreMultiplied;
verts[2].Colors = greenPreMultiplied;
triangleList2.DrawTriangleList(verts);
triangleList2.Position = windowSize.Center;
triangleList2.PositionX += windowSize.Width / 4;
triangleList2.PositionY -= triangleList2.BoundingRect.Size.Height / 2;
}
/*
* TL TR
* 0----1 0,1,2,3 = index offsets for vertex indices
* | /|
* | / |
* | / |
* |/ |
* 2----3
* BL BR
*/
void GenerateGradient(CCSize textureSizeInPixels)
{
var gradientNode = new CCDrawNode();
var gradientAlpha = new CCColor4B(0, 0, 0, (byte)(0.7f * 255f));
CCV3F_C4B[] vertices = new CCV3F_C4B[6];
// Left triangle TL - 0
vertices[0].Vertices = new CCVertex3F(0, textureSizeInPixels.Height, 0);
vertices[0].Colors = CCColor4B.Transparent;
// Left triangle BL - 2
vertices[1].Vertices = new CCVertex3F(0, 0, 0);
vertices[1].Colors = gradientAlpha;
// Left triangle TR - 1
vertices[2].Vertices = new CCVertex3F(textureSizeInPixels.Width, textureSizeInPixels.Height, 0);
vertices[2].Colors = CCColor4B.Transparent;
// Right triangle BL - 2
vertices[3].Vertices = new CCVertex3F(0, 0, 0);
vertices[3].Colors = gradientAlpha;
// Right triangle BR - 3
vertices[4].Vertices = new CCVertex3F(textureSizeInPixels.Width, 0, 0);
vertices[4].Colors = gradientAlpha;
// Right triangle TR - 1
vertices[5].Vertices = new CCVertex3F(textureSizeInPixels.Width, textureSizeInPixels.Height, 0);
vertices[5].Colors = CCColor4B.Transparent;
gradientNode.DrawTriangleList(vertices);
gradientNode.Visit();
}
public override void OnEnter()
{
base.OnEnter();
CCSize windowSize = Layer.VisibleBoundsWorldspace.Size;
CCDrawNode draw = new CCDrawNode();
AddChild(draw, 10);
var s = windowSize;
// Draw 10 circles
for (int i = 0; i < 10; i++)
{
draw.DrawDot(s.Center, 10 * (10 - i),
new CCColor4F(CCRandom.Float_0_1(), CCRandom.Float_0_1(), CCRandom.Float_0_1(), 1));
}
// Draw polygons
CCV3F_C4B[] points = new CCV3F_C4B[3];
points[0].Colors = CCColor4B.Red;
points[0].Colors.A = 127;
points[1].Colors = CCColor4B.Green;
points[1].Colors.A = 127;
points[2].Colors = CCColor4B.Blue;
points[2].Colors.A = 127;
points[0].Vertices.X = windowSize.Height / 4;
points[0].Vertices.Y = 0;
points[1].Vertices.X = windowSize.Width;
points[1].Vertices.Y = windowSize.Height / 5;
points[2].Vertices.X = windowSize.Width / 3 * 2;
points[2].Vertices.Y = windowSize.Height;
draw.DrawTriangleList(points);
// star poly (triggers buggs)
{
const float o = 80;
const float w = 20;
const float h = 50;
CCPoint[] star = new CCPoint[]
{
new CCPoint(o + w, o - h), new CCPoint(o + w * 2, o), // lower spike
new CCPoint(o + w * 2 + h, o + w), new CCPoint(o + w * 2, o + w * 2), // right spike
};
draw.DrawPolygon(star, star.Length, new CCColor4F(1, 0, 0, 0.5f), 1, new CCColor4F(0, 0, 1, 1));
}
// star poly (doesn't trigger bug... order is important un tesselation is supported.
{
const float o = 180;
const float w = 20;
const float h = 50;
var star = new CCPoint[]
{
new CCPoint(o, o), new CCPoint(o + w, o - h), new CCPoint(o + w * 2, o), // lower spike
new CCPoint(o + w * 2 + h, o + w), new CCPoint(o + w * 2, o + w * 2), // right spike
new CCPoint(o + w, o + w * 2 + h), new CCPoint(o, o + w * 2), // top spike
new CCPoint(o - h, o + w), // left spike
};
draw.DrawPolygon(star, star.Length, new CCColor4F(1, 0, 0, 0.5f), 1, new CCColor4F(0, 0, 1, 1));
}
// Draw segment
draw.DrawSegment(new CCPoint(20, windowSize.Height), new CCPoint(20, windowSize.Height / 2), 10, new CCColor4F(0, 1, 0, 1));
draw.DrawSegment(new CCPoint(10, windowSize.Height / 2), new CCPoint(windowSize.Width / 2, windowSize.Height / 2), 40,
new CCColor4F(1, 0, 1, 0.5f));
}
