From 79879128b62b9860026b2b75d496e5bfec5d384e Mon Sep 17 00:00:00 2001 From: KJ Lawrence Date: Sun, 20 Jun 2021 01:01:41 -0400 Subject: [PATCH] gg: add `rotate` to `DrawImageConfig` (#10521) --- vlib/gg/image.v | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) diff --git a/vlib/gg/image.v b/vlib/gg/image.v index 95a0369bdb..6868b517c1 100644 --- a/vlib/gg/image.v +++ b/vlib/gg/image.v @@ -35,6 +35,7 @@ pub: img_id int img_rect Rect // defines the size and position on image when rendering to the screen part_rect Rect // defines the size and position of part of the image to use when rendering + rotate int // amount to rotate the image in degrees z f32 } @@ -221,6 +222,17 @@ pub fn (ctx &Context) draw_image_with_config(config DrawImageConfig) { sgl.load_pipeline(ctx.timage_pip) sgl.enable_texture() sgl.texture(img.simg) + + if config.rotate != 0 { + width := img_rect.width * ctx.scale + height := (if img_rect.height > 0 { img_rect.height } else { img.height }) * ctx.scale + + sgl.push_matrix() + sgl.translate(x0 + (width / 2), y0 + (height / 2), 0) + sgl.rotate(sgl.rad(-config.rotate), 0, 0, 1) + sgl.translate(-x0 - (width / 2), -y0 - (height / 2), 0) + } + sgl.begin_quads() sgl.c4b(255, 255, 255, 255) sgl.v3f_t2f(x0, y0, config.z, u0f, v0f) @@ -228,6 +240,11 @@ pub fn (ctx &Context) draw_image_with_config(config DrawImageConfig) { sgl.v3f_t2f(x1, y1, config.z, u1f, v1f) sgl.v3f_t2f(x0, y1, config.z, u0f, v1f) sgl.end() + + if config.rotate != 0 { + sgl.pop_matrix() + } + sgl.disable_texture() } @@ -280,7 +297,7 @@ pub fn (ctx &Context) draw_image_flipped(x f32, y f32, width f32, height f32, im ) } -// draw_image_by_id draws an image based by an id +// draw_image_by_id draws an image by its id pub fn (ctx &Context) draw_image_by_id(x f32, y f32, width f32, height f32, id int) { ctx.draw_image_with_config( img_id: id