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-rw-r--r--core/image.cpp130
-rw-r--r--core/image.h3
-rw-r--r--doc/base/classes.xml31
3 files changed, 164 insertions, 0 deletions
diff --git a/core/image.cpp b/core/image.cpp
index ad52447935..ec21260b19 100644
--- a/core/image.cpp
+++ b/core/image.cpp
@@ -1646,6 +1646,133 @@ void Image::blit_rect(const Ref<Image> &p_src, const Rect2 &p_src_rect, const Po
}
}
+void Image::blend_rect(const Ref<Image> &p_src, const Rect2 &p_src_rect, const Point2 &p_dest) {
+
+ ERR_FAIL_COND(p_src.is_null());
+ int dsize = data.size();
+ int srcdsize = p_src->data.size();
+ ERR_FAIL_COND(dsize == 0);
+ ERR_FAIL_COND(srcdsize == 0);
+ ERR_FAIL_COND(format != p_src->format);
+
+ Rect2i clipped_src_rect = Rect2i(0, 0, p_src->width, p_src->height).clip(p_src_rect);
+ if (clipped_src_rect.size.x <= 0 || clipped_src_rect.size.y <= 0)
+ return;
+
+ Rect2i dest_rect = Rect2i(0, 0, width, height).clip(Rect2i(p_dest, clipped_src_rect.size));
+
+ lock();
+ Ref<Image> img = p_src;
+ img->lock();
+
+ for (int i = 0; i < dest_rect.size.y; i++) {
+
+ for (int j = 0; j < dest_rect.size.x; j++) {
+
+ int src_x = clipped_src_rect.position.x + j;
+ int src_y = clipped_src_rect.position.y + i;
+
+ int dst_x = dest_rect.position.x + j;
+ int dst_y = dest_rect.position.y + i;
+
+ Color sc = img->get_pixel(src_x, src_y);
+ Color dc = get_pixel(dst_x, dst_y);
+ dc.r = (double)(sc.a * sc.r + dc.a * (1.0 - sc.a) * dc.r);
+ dc.g = (double)(sc.a * sc.g + dc.a * (1.0 - sc.a) * dc.g);
+ dc.b = (double)(sc.a * sc.b + dc.a * (1.0 - sc.a) * dc.b);
+ dc.a = (double)(sc.a + dc.a * (1.0 - sc.a));
+ put_pixel(dst_x, dst_y, dc);
+ }
+ }
+
+ img->unlock();
+ unlock();
+}
+
+void Image::blend_rect_mask(const Ref<Image> &p_src, const Ref<Image> &p_mask, const Rect2 &p_src_rect, const Point2 &p_dest) {
+
+ ERR_FAIL_COND(p_src.is_null());
+ ERR_FAIL_COND(p_mask.is_null());
+ int dsize = data.size();
+ int srcdsize = p_src->data.size();
+ int maskdsize = p_mask->data.size();
+ ERR_FAIL_COND(dsize == 0);
+ ERR_FAIL_COND(srcdsize == 0);
+ ERR_FAIL_COND(maskdsize == 0);
+ ERR_FAIL_COND(p_src->width != p_mask->width);
+ ERR_FAIL_COND(p_src->height != p_mask->height);
+ ERR_FAIL_COND(format != p_src->format);
+
+ Rect2i clipped_src_rect = Rect2i(0, 0, p_src->width, p_src->height).clip(p_src_rect);
+ if (clipped_src_rect.size.x <= 0 || clipped_src_rect.size.y <= 0)
+ return;
+
+ Rect2i dest_rect = Rect2i(0, 0, width, height).clip(Rect2i(p_dest, clipped_src_rect.size));
+
+ lock();
+ Ref<Image> img = p_src;
+ Ref<Image> msk = p_mask;
+ img->lock();
+ msk->lock();
+
+ for (int i = 0; i < dest_rect.size.y; i++) {
+
+ for (int j = 0; j < dest_rect.size.x; j++) {
+
+ int src_x = clipped_src_rect.position.x + j;
+ int src_y = clipped_src_rect.position.y + i;
+
+ // If the mask's pixel is transparent then we skip it
+ //Color c = msk->get_pixel(src_x, src_y);
+ //if (c.a == 0) continue;
+ if (msk->get_pixel(src_x, src_y).a != 0) {
+
+ int dst_x = dest_rect.position.x + j;
+ int dst_y = dest_rect.position.y + i;
+
+ Color sc = img->get_pixel(src_x, src_y);
+ Color dc = get_pixel(dst_x, dst_y);
+ dc.r = (double)(sc.a * sc.r + dc.a * (1.0 - sc.a) * dc.r);
+ dc.g = (double)(sc.a * sc.g + dc.a * (1.0 - sc.a) * dc.g);
+ dc.b = (double)(sc.a * sc.b + dc.a * (1.0 - sc.a) * dc.b);
+ dc.a = (double)(sc.a + dc.a * (1.0 - sc.a));
+ put_pixel(dst_x, dst_y, dc);
+ }
+ }
+ }
+
+ msk->unlock();
+ img->unlock();
+ unlock();
+}
+
+void Image::fill(const Color &c) {
+
+ lock();
+
+ PoolVector<uint8_t>::Write wp = data.write();
+ uint8_t *dst_data_ptr = wp.ptr();
+
+ int pixel_size = get_format_pixel_size(format);
+
+ // put first pixel with the format-aware API
+ put_pixel(0, 0, c);
+
+ for (int y = 0; y < height; y++) {
+
+ for (int x = 0; x < width; x++) {
+
+ uint8_t *dst = &dst_data_ptr[(y * width + x) * pixel_size];
+
+ for (int k = 0; k < pixel_size; k++) {
+ dst[k] = dst_data_ptr[k];
+ }
+ }
+ }
+
+ unlock();
+}
+
Ref<Image> (*Image::_png_mem_loader_func)(const uint8_t *, int) = NULL;
Ref<Image> (*Image::_jpg_mem_loader_func)(const uint8_t *, int) = NULL;
@@ -2072,6 +2199,9 @@ void Image::_bind_methods() {
ClassDB::bind_method(D_METHOD("normalmap_to_xy"), &Image::normalmap_to_xy);
ClassDB::bind_method(D_METHOD("blit_rect", "src:Image", "src_rect", "dst"), &Image::blit_rect);
+ ClassDB::bind_method(D_METHOD("blend_rect", "src:Image", "src_rect", "dst"), &Image::blend_rect);
+ ClassDB::bind_method(D_METHOD("blend_rect_mask", "src:Image", "mask:Image", "src_rect", "dst"), &Image::blend_rect_mask);
+ ClassDB::bind_method(D_METHOD("fill", "color"), &Image::fill);
ClassDB::bind_method(D_METHOD("get_used_rect"), &Image::get_used_rect);
ClassDB::bind_method(D_METHOD("get_rect:Image", "rect"), &Image::get_rect);
diff --git a/core/image.h b/core/image.h
index 838b37352d..3323afdc4b 100644
--- a/core/image.h
+++ b/core/image.h
@@ -283,6 +283,9 @@ public:
void normalmap_to_xy();
void blit_rect(const Ref<Image> &p_src, const Rect2 &p_src_rect, const Point2 &p_dest);
+ void blend_rect(const Ref<Image> &p_src, const Rect2 &p_src_rect, const Point2 &p_dest);
+ void blend_rect_mask(const Ref<Image> &p_src, const Ref<Image> &p_mask, const Rect2 &p_src_rect, const Point2 &p_dest);
+ void fill(const Color &c);
Rect2 get_used_rect() const;
Ref<Image> get_rect(const Rect2 &p_area) const;
diff --git a/doc/base/classes.xml b/doc/base/classes.xml
index 2331d49c1f..fd3d629505 100644
--- a/doc/base/classes.xml
+++ b/doc/base/classes.xml
@@ -18949,6 +18949,30 @@
Native image datatype. Contains image data, which can be converted to a texture, and several functions to interact with it.
</description>
<methods>
+ <method name="blend_rect">
+ <argument index="0" name="src" type="Image">
+ </argument>
+ <argument index="1" name="src_rect" type="Rect2">
+ </argument>
+ <argument index="2" name="dst" type="Vector2">
+ </argument>
+ <description>
+ Alpha-blends a "src_rect" [Rect2] from "src" [Image] to this [Image] on coordinates "dest".
+ </description>
+ </method>
+ <method name="blend_rect_mask">
+ <argument index="0" name="src" type="Image">
+ </argument>
+ <argument index="1" name="mask" type="Image">
+ </argument>
+ <argument index="2" name="src_rect" type="Rect2">
+ </argument>
+ <argument index="3" name="dst" type="Vector2">
+ </argument>
+ <description>
+ Alpha-blends a "src_rect" [Rect2] from "src" [Image] to this [Image] using a "mask" [Image] on coordinates "dest". Alpha channels are required for both "src" and "mask", dest pixels and src pixels will blend if the corresponding mask pixel's alpha value is not 0. "src" [Image] and "mask" [Image] *must* have the same size (width and height) but they can have different formats
+ </description>
+ </method>
<method name="blit_rect">
<argument index="0" name="src" type="Image">
</argument>
@@ -19039,6 +19063,13 @@
<description>
</description>
</method>
+ <method name="fill">
+ <argument index="0" name="color" type="Color">
+ </argument>
+ <description>
+ Fills an [Image] with a specified [Color]
+ </description>
+ </method>
<method name="fix_alpha_edges">
<description>
</description>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-25 03:33:27 +0000