/// <summary>
/// テクスチャを描画します。
/// </summary>
public static void Draw(GameBase game, Texture2D texture, Vector location, Vector scale, float angle, Color?color = null, float?width = null, float?height = null)
{
var w = width ?? texture.Size.X;
var h = height ?? texture.Size.Y;
w *= scale.X;
h *= scale.Y;
var(left, top) = location;
var right = left + w;
var bottom = top + h;
if (left > game.ActualWidth || top > game.ActualHeight || right < 0 || bottom < 0)
{
return;
}
var hw = game.ActualWidth / 2;
var hh = game.ActualHeight / 2;
var v0 = (left, top).ToViewportPoint(hw, hh);
var v1 = (right, top).ToViewportPoint(hw, hh);
var v2 = (left, bottom).ToViewportPoint(hw, hh);
var v3 = (right, bottom).ToViewportPoint(hw, hh);
if (!DFKeyboard.Semicolon)
{
GL.Enable(EnableCap.Blend);
GL.BlendFunc(BlendingFactor.SrcAlpha, BlendingFactor.OneMinusSrcAlpha);
GL.BlendEquation(BlendEquationMode.FuncAdd);
GL.Enable(EnableCap.Texture2D);
GL.BindTexture(TextureTarget.Texture2D, texture.Handle);
using (new GLContext(PrimitiveType.Quads))
{
Vertex(1, 1, v3, color);
Vertex(0, 1, v2, color);
Vertex(0, 0, v0, color);
Vertex(1, 0, v1, color);
}
GL.Disable(EnableCap.Texture2D);
GL.Disable(EnableCap.Blend);
}
}