Aspose.Slides FOSS for .NET lets you apply professional-quality visual effects to PowerPoint shapes entirely in C#, with no Microsoft Office and no API keys. This post demonstrates the fill system, 2D effects, and 3D formatting available in the library.

El sistema de relleno

Cada forma tiene una FillFormat que controla cómo se pinta su interior. Los cinco tipos de relleno cubren toda la gama de la paleta de diseño de PowerPoint.

Relleno sólido

El relleno más simple, un color plano con transparencia opcional:

using Aspose.Slides.Foss;

using var prs = new Presentation();
var shape = prs.Slides[0].Shapes.AddAutoShape(
    ShapeType.RoundCornerRectangle, 100, 100, 400, 150
);
shape.AddTextFrame("Solid Fill");

shape.FillFormat.FillType = FillType.Solid;
shape.FillFormat.SolidFillColor.Color = Color.FromArgb(255, 30, 80, 180);

prs.Save("solid.pptx", SaveFormat.Pptx);

Relleno de degradado lineal

Los puntos de degradado le permiten mezclar de un color a otro a lo largo de la forma:

using Aspose.Slides.Foss;

using var prs = new Presentation();
var shape = prs.Slides[0].Shapes.AddAutoShape(
    ShapeType.Rectangle, 100, 100, 400, 150
);

var ff = shape.FillFormat;
ff.FillType = FillType.Gradient;
var gf = ff.GradientFormat;
gf.GradientShape = GradientShape.Linear;
gf.LinearGradientAngle = 90;   // top-to-bottom

gf.GradientStops.Add(0.0f, Color.FromArgb(255, 30, 80, 180));   // top: blue
gf.GradientStops.Add(1.0f, Color.FromArgb(255, 0, 200, 160));   // bottom: teal

prs.Save("gradient.pptx", SaveFormat.Pptx);

2D Visual Effects

Sombra paralela externa

Adjunte una sombra paralela semitransparente a cualquier forma:

using Aspose.Slides.Foss;

using var prs = new Presentation();
var shape = prs.Slides[0].Shapes.AddAutoShape(
    ShapeType.RoundCornerRectangle, 100, 100, 350, 150
);
shape.AddTextFrame("Drop Shadow");

shape.FillFormat.FillType = FillType.Solid;
shape.FillFormat.SolidFillColor.Color = Color.White;

var ef = shape.EffectFormat;
ef.EnableOuterShadowEffect();
ef.OuterShadowEffect.BlurRadius = 12;
ef.OuterShadowEffect.Direction = 315;   // upper-left
ef.OuterShadowEffect.Distance = 8;
ef.OuterShadowEffect.ShadowColor.Color = Color.FromArgb(100, 0, 0, 0);

prs.Save("shadow.pptx", SaveFormat.Pptx);

Efecto de resplandor

Un halo coloreado alrededor del borde de la forma:

using Aspose.Slides.Foss;

using var prs = new Presentation();
var shape = prs.Slides[0].Shapes.AddAutoShape(
    ShapeType.Ellipse, 150, 100, 250, 250
);
shape.FillFormat.FillType = FillType.Solid;
shape.FillFormat.SolidFillColor.Color = Color.FromArgb(255, 20, 60, 140);

var ef = shape.EffectFormat;
ef.EnableGlowEffect();
ef.GlowEffect.Radius = 20;
ef.GlowEffect.Color.Color = Color.FromArgb(200, 0, 180, 255);

prs.Save("glow.pptx", SaveFormat.Pptx);

3D Formatting

Bisel y material

El ThreeDFormat propiedad le da a cualquier forma plana una apariencia tridimensional. Combine un bisel con un ajuste preestablecido de cámara y un material para obtener el resultado más rico:

using Aspose.Slides.Foss;

using var prs = new Presentation();
var shape = prs.Slides[0].Shapes.AddAutoShape(
    ShapeType.Rectangle, 150, 150, 300, 130
);
shape.AddTextFrame("Metal Button");

// Blue solid fill
shape.FillFormat.FillType = FillType.Solid;
shape.FillFormat.SolidFillColor.Color = Color.FromArgb(255, 20, 70, 160);

// 3D bevel + camera + light + material
var tdf = shape.ThreeDFormat;
tdf.BevelTop.BevelType = BevelPresetType.Circle;
tdf.BevelTop.Width = 10;
tdf.BevelTop.Height = 5;
tdf.Camera.CameraType = CameraPresetType.PerspectiveAbove;
tdf.LightRig.LightType = LightRigPresetType.Balanced;
tdf.LightRig.Direction = LightingDirection.Top;
tdf.Material = MaterialPresetType.Metal;
tdf.Depth = 20;

prs.Save("metal-button.pptx", SaveFormat.Pptx);

Combinando efectos en la misma forma

La sombra y el formato 3D pueden coexistir en una sola forma, lo que permite diseños de “tarjeta” pulidos:

using Aspose.Slides.Foss;

using var prs = new Presentation();
var shape = prs.Slides[0].Shapes.AddAutoShape(
    ShapeType.RoundCornerRectangle, 120, 120, 360, 150
);
shape.AddTextFrame("Premium Card");

// Fill
shape.FillFormat.FillType = FillType.Solid;
shape.FillFormat.SolidFillColor.Color = Color.FromArgb(255, 30, 80, 180);

// 3D bevel
var tdf = shape.ThreeDFormat;
tdf.BevelTop.BevelType = BevelPresetType.Circle;
tdf.BevelTop.Width = 8;
tdf.Camera.CameraType = CameraPresetType.PerspectiveAbove;
tdf.Material = MaterialPresetType.Plastic;

// Drop shadow
var ef = shape.EffectFormat;
ef.EnableOuterShadowEffect();
ef.OuterShadowEffect.BlurRadius = 14;
ef.OuterShadowEffect.Direction = 270;
ef.OuterShadowEffect.Distance = 8;
ef.OuterShadowEffect.ShadowColor.Color = Color.FromArgb(70, 0, 0, 0);

prs.Save("premium-card.pptx", SaveFormat.Pptx);

Instalación

dotnet add package Aspose.Slides.Foss

Sin instalación de Office, sin claves de licencia, sin llamadas a la red; todo el procesamiento se realiza localmente.

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