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removed threshold

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This commit is contained in:
Bruno Cabral 2024-06-28 15:28:13 -07:00
parent d7c597e513
commit 5dc41ff29f
3 changed files with 10 additions and 24 deletions
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8
examples/textures/textures_image_channel.c
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@ -33,19 +33,19 @@ int main(void)
Image fudesumiImage = LoadImage("resources/fudesumi.png"); Image fudesumiImage = LoadImage("resources/fudesumi.png");
Texture2D fudesumiTexture = LoadTextureFromImage(fudesumiImage); Texture2D fudesumiTexture = LoadTextureFromImage(fudesumiImage);
Image imageRed = ImageFromChannel(fudesumiImage, 0, 0.0f); Image imageRed = ImageFromChannel(fudesumiImage, 0);
Texture2D textureRed = LoadTextureFromImage(imageRed); Texture2D textureRed = LoadTextureFromImage(imageRed);
UnloadImage(imageRed); UnloadImage(imageRed);
Image imageGreen = ImageFromChannel(fudesumiImage, 1, 0.0f); Image imageGreen = ImageFromChannel(fudesumiImage, 1);
Texture2D textureGreen = LoadTextureFromImage(imageGreen); Texture2D textureGreen = LoadTextureFromImage(imageGreen);
UnloadImage(imageGreen); UnloadImage(imageGreen);
Image imageBlue = ImageFromChannel(fudesumiImage, 2, 0.0f); Image imageBlue = ImageFromChannel(fudesumiImage, 2);
Texture2D textureBlue = LoadTextureFromImage(imageBlue); Texture2D textureBlue = LoadTextureFromImage(imageBlue);
UnloadImage(imageBlue); UnloadImage(imageBlue);
Image imageAlpha = ImageFromChannel(fudesumiImage, 3, 0.0f); Image imageAlpha = ImageFromChannel(fudesumiImage, 3);
Texture2D textureAlpha = LoadTextureFromImage(imageAlpha); Texture2D textureAlpha = LoadTextureFromImage(imageAlpha);
UnloadImage(imageAlpha); UnloadImage(imageAlpha);

2
src/raylib.h
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@ -1334,7 +1334,7 @@ RLAPI Image ImageCopy(Image image);
RLAPI Image ImageFromImage(Image image, Rectangle rec); // Create an image from another image piece RLAPI Image ImageFromImage(Image image, Rectangle rec); // Create an image from another image piece
RLAPI Image ImageText(const char *text, int fontSize, Color color); // Create an image from text (default font) RLAPI Image ImageText(const char *text, int fontSize, Color color); // Create an image from text (default font)
RLAPI Image ImageTextEx(Font font, const char *text, float fontSize, float spacing, Color tint); // Create an image from text (custom sprite font) RLAPI Image ImageTextEx(Font font, const char *text, float fontSize, float spacing, Color tint); // Create an image from text (custom sprite font)
RLAPI Image ImageFromChannel(Image image, int selectedChannel, float threshold); // Create an image from a selected channel of another image (Gray Alpha or RGBA) RLAPI Image ImageFromChannel(Image image, int selectedChannel); // Create an image from a selected channel of another image
RLAPI void ImageFormat(Image *image, int newFormat); // Convert image data to desired format RLAPI void ImageFormat(Image *image, int newFormat); // Convert image data to desired format
RLAPI void ImageToPOT(Image *image, Color fill); // Convert image to POT (power-of-two) RLAPI void ImageToPOT(Image *image, Color fill); // Convert image to POT (power-of-two)
RLAPI void ImageCrop(Image *image, Rectangle crop); // Crop an image to a defined rectangle RLAPI void ImageCrop(Image *image, Rectangle crop); // Crop an image to a defined rectangle

24
src/rtextures.c
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@ -1630,7 +1630,8 @@ Image ImageTextEx(Font font, const char *text, float fontSize, float spacing, Co
return imText; return imText;
} }
Image ImageFromChannel(Image image, int selectedChannel, float threshold) // Create an image from a selected channel of another image
Image ImageFromChannel(Image image, int selectedChannel)
{ {
Image result = { 0 }; Image result = { 0 };
@ -1638,18 +1639,6 @@ Image ImageFromChannel(Image image, int selectedChannel, float threshold)
if ((image.data == NULL) || (image.width == 0) || (image.height == 0)) if ((image.data == NULL) || (image.width == 0) || (image.height == 0))
return result; return result;
// Check thresholds limits
if (threshold < 0.0f)
{
TRACELOG(LOG_WARNING, "Threshold is from 0 to 1, changing to 0.");
threshold = 0.0f;
}
if (threshold > 1.0f)
{
TRACELOG(LOG_WARNING, "Threshold is from 0 to 1, changing to 1.");
threshold = 1.0f;
}
// Check selected channel // Check selected channel
if (selectedChannel < 0) if (selectedChannel < 0)
{ {
@ -1851,13 +1840,10 @@ Image ImageFromChannel(Image image, int selectedChannel, float threshold)
// verify threshold // verify threshold
unsigned char resultValue = 0; unsigned char resultValue = 0;
unsigned char resultAlpha = 0; unsigned char resultAlpha = 0;
if (imageValue >= threshold) resultValue = imageValue * 255;
if (imageAlpha)
{ {
resultValue = imageValue * 255; resultAlpha = 255;
if (imageAlpha)
{
resultAlpha = 255;
}
} }
pixels[i] = resultValue; pixels[i] = resultValue;