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diff --git a/material_diffusive.h b/material_diffusive.h
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+//
+// Created by Keuin on 2022/4/15.
+//
+
+#ifndef RT_MATERIAL_DIFFUSIVE_H
+#define RT_MATERIAL_DIFFUSIVE_H
+
+#include "vec.h"
+#include "material.h"
+
+class material_diffuse_lambertian : public material {
+    vec3d albedo;
+public:
+    explicit material_diffuse_lambertian(vec3d albedo);
+    explicit material_diffuse_lambertian(double albedo);
+
+    bool scatter(ray3d &r, const object &hit_obj, double hit_t, random_uv_gen_3d &ruvg) const override;
+};
+
+class material_diffuse_simple : public material {
+    vec3d albedo;
+public:
+    explicit material_diffuse_simple(vec3d albedo);
+    explicit material_diffuse_simple(double albedo);
+
+    bool scatter(ray3d &r, const object &hit_obj, double hit_t, random_uv_gen_3d &ruvg) const override;
+};
+
+class material_diffuse_hemispherical : public material {
+    vec3d albedo;
+public:
+    explicit material_diffuse_hemispherical(vec3d albedo);
+    explicit material_diffuse_hemispherical(double albedo);
+
+    bool scatter(ray3d &r, const object &hit_obj, double hit_t, random_uv_gen_3d &ruvg) const override;
+};
+
+#endif //RT_MATERIAL_DIFFUSIVE_H