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move matrix model code to matrix.h

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This commit is contained in:
Tony Crisci 2018-01-21 15:53:29 -05:00
parent 7474f00591
commit d13114520a
5 changed files with 68 additions and 56 deletions
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46
render/matrix.c
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@ -1,6 +1,8 @@
#include <string.h>
#include <math.h>
#include <wayland-server-protocol.h>
#include <wlr/types/wlr_box.h>
#include <wlr/types/wlr_output.h>
#include <wlr/render/matrix.h>
/* Obtains the index for the given row/column */
@ -158,3 +160,47 @@ void wlr_matrix_texture(float mat[static 16], int32_t width, int32_t height,
mat[10] = 1.0f;
mat[15] = 1.0f;
}
void wlr_matrix_box_model(float (*mat)[16], struct wlr_box *box,
enum wl_output_transform transform, float rotation) {
int x = box->x;
int y = box->y;
int width = box->width;
int height = box->height;
float translate_center[16];
wlr_matrix_translate(&translate_center,
(int)x + width / 2, (int)y + height / 2, 0);
float rotate[16];
wlr_matrix_rotate(&rotate, rotation);
float translate_origin[16];
wlr_matrix_translate(&translate_origin, -width / 2,
-height / 2, 0);
float scale[16];
wlr_matrix_scale(&scale, width, height, 1);
wlr_matrix_mul(&translate_center, &rotate, mat);
wlr_matrix_mul(mat, &translate_origin, mat);
wlr_matrix_mul(mat, &scale, mat);
if (transform != WL_OUTPUT_TRANSFORM_NORMAL) {
float surface_translate_center[16];
wlr_matrix_translate(&surface_translate_center, 0.5, 0.5, 0);
float surface_transform[16];
wlr_matrix_transform(surface_transform,
wlr_output_transform_invert(transform));
float surface_translate_origin[16];
wlr_matrix_translate(&surface_translate_origin, -0.5, -0.5, 0);
wlr_matrix_mul(mat, &surface_translate_center,
mat);
wlr_matrix_mul(mat, &surface_transform, mat);
wlr_matrix_mul(mat, &surface_translate_origin,
mat);
}
}