Exemplo n.º 1
0
        protected void PrepareVerticesLightSmooth(ref VertexC1P3T4A4A1[] vertices, IDrawDevice device, float curAnimFrameFade, ColorRgba mainClr, Rect uvRect, Rect uvRectNext, DrawTechnique tech)
        {
            bool perPixel = tech is LightingTechnique;

            Vector3 pos       = this.GameObj.Transform.Pos;
            Vector3 posTemp   = pos;
            float   scaleTemp = 1.0f;

            device.PreprocessCoords(ref posTemp, ref scaleTemp);

            Vector2 xDot, yDot;
            float   rotation = this.GameObj.Transform.Angle;

            MathF.GetTransformDotVec(rotation, out xDot, out yDot);

            Rect    rectTemp = this.rect.Transform(this.GameObj.Transform.Scale, this.GameObj.Transform.Scale);
            Vector2 edge1    = rectTemp.TopLeft;
            Vector2 edge2    = rectTemp.BottomLeft;
            Vector2 edge3    = rectTemp.BottomRight;
            Vector2 edge4    = rectTemp.TopRight;

            MathF.TransformDotVec(ref edge1, ref xDot, ref yDot);
            MathF.TransformDotVec(ref edge2, ref xDot, ref yDot);
            MathF.TransformDotVec(ref edge3, ref xDot, ref yDot);
            MathF.TransformDotVec(ref edge4, ref xDot, ref yDot);

            // Using Per-Vertex Lighting? Calculate vertex light values
            Vector4[] vertexLight = null;
            if (!perPixel)
            {
                vertexLight = new Vector4[4];
                Light.GetLightAtWorldPos(pos + new Vector3(edge1), out vertexLight[0], this.vertexTranslucency);
                Light.GetLightAtWorldPos(pos + new Vector3(edge2), out vertexLight[1], this.vertexTranslucency);
                Light.GetLightAtWorldPos(pos + new Vector3(edge3), out vertexLight[2], this.vertexTranslucency);
                Light.GetLightAtWorldPos(pos + new Vector3(edge4), out vertexLight[3], this.vertexTranslucency);
            }

            Vector2.Multiply(ref edge1, scaleTemp, out edge1);
            Vector2.Multiply(ref edge2, scaleTemp, out edge2);
            Vector2.Multiply(ref edge3, scaleTemp, out edge3);
            Vector2.Multiply(ref edge4, scaleTemp, out edge4);

            // Using Per-Pixel Lighting? Pass objRotation Matrix via vertex attribute.
            Vector4 objRotMat = Vector4.Zero;

            if (perPixel)
            {
                objRotMat = new Vector4((float)Math.Cos(-rotation), -(float)Math.Sin(-rotation), (float)Math.Sin(-rotation), (float)Math.Cos(-rotation));
            }

            if (vertices == null || vertices.Length != 4)
            {
                vertices = new VertexC1P3T4A4A1[4];
            }

            // Directly pass World Position with each vertex, see note in Light.cs
            vertices[0].pos.X      = posTemp.X + edge1.X;
            vertices[0].pos.Y      = posTemp.Y + edge1.Y;
            vertices[0].pos.Z      = posTemp.Z + this.VertexZOffset;
            vertices[0].texCoord.X = uvRect.X;
            vertices[0].texCoord.Y = uvRect.Y;
            vertices[0].texCoord.Z = uvRectNext.X;
            vertices[0].texCoord.W = uvRectNext.Y;
            vertices[0].clr        = mainClr;
            vertices[0].attrib     = perPixel ? objRotMat : vertexLight[0];
            vertices[0].attrib2    = curAnimFrameFade;

            vertices[1].pos.X      = posTemp.X + edge2.X;
            vertices[1].pos.Y      = posTemp.Y + edge2.Y;
            vertices[1].pos.Z      = posTemp.Z + this.VertexZOffset;
            vertices[1].texCoord.X = uvRect.X;
            vertices[1].texCoord.Y = uvRect.MaxY;
            vertices[1].texCoord.Z = uvRectNext.X;
            vertices[1].texCoord.W = uvRectNext.MaxY;
            vertices[1].clr        = mainClr;
            vertices[1].attrib     = perPixel ? objRotMat : vertexLight[1];
            vertices[1].attrib2    = curAnimFrameFade;

            vertices[2].pos.X      = posTemp.X + edge3.X;
            vertices[2].pos.Y      = posTemp.Y + edge3.Y;
            vertices[2].pos.Z      = posTemp.Z + this.VertexZOffset;
            vertices[2].texCoord.X = uvRect.MaxX;
            vertices[2].texCoord.Y = uvRect.MaxY;
            vertices[2].texCoord.Z = uvRectNext.MaxX;
            vertices[2].texCoord.W = uvRectNext.MaxY;
            vertices[2].clr        = mainClr;
            vertices[2].attrib     = perPixel ? objRotMat : vertexLight[2];
            vertices[2].attrib2    = curAnimFrameFade;

            vertices[3].pos.X      = posTemp.X + edge4.X;
            vertices[3].pos.Y      = posTemp.Y + edge4.Y;
            vertices[3].pos.Z      = posTemp.Z + this.VertexZOffset;
            vertices[3].texCoord.X = uvRect.MaxX;
            vertices[3].texCoord.Y = uvRect.Y;
            vertices[3].texCoord.Z = uvRectNext.MaxX;
            vertices[3].texCoord.W = uvRectNext.Y;
            vertices[3].clr        = mainClr;
            vertices[3].attrib     = perPixel ? objRotMat : vertexLight[3];
            vertices[3].attrib2    = curAnimFrameFade;
        }