/**
* @brief Bind and draw a texture
* @param[in] texnum The texture id (already uploaded of course)
* @param[in] x normalized x value on the screen
* @param[in] y normalized y value on the screen
* @param[in] w normalized width value
* @param[in] h normalized height value
*/
void R_DrawTexture (int texnum, int x, int y, int w, int h)
{
const vec2_t vertexes[] = {{x, y}, {x + w, y}, {x + w, y + h}, {x, y + h}};
R_BindTexture(texnum);
R_DrawImageArray(default_texcoords, vertexes, NULL);
}
static void UI_RadarNodeDrawArrays (const vec4_t color, vec2_t coords[4], vec2_t vertices[4], const image_t* image)
{
R_Color(color);
R_DrawImageArray((const vec2_t*)coords, (const vec2_t*)vertices, image);
R_Color(nullptr);
}
/**
* @brief Draw a normalized (to the screen) image
* @param[in] flip Flip the icon rendering (horizontal)
* @param[in] x,y The coordinates (normalized)
* @param[in] w The width (normalized)
* @param[in] h The height (normalized)
* @param[in] sh The s part of the texture coordinate (horizontal)
* @param[in] th The t part of the texture coordinate (horizontal)
* @param[in] sl The s part of the texture coordinate (vertical)
* @param[in] tl The t part of the texture coordinate (vertical)
* @param[in] image The image to draw
*/
void UI_DrawNormImage (bool flip, float x, float y, float w, float h, float sh, float th, float sl, float tl, const image_t* image)
{
float nw, nh, x1, x2, x3, x4, y1, y2, y3, y4;
if (!image)
return;
/* normalize to the screen resolution */
x1 = x * viddef.rx;
y1 = y * viddef.ry;
/* provided width and height (if any) take precedence */
if (w)
nw = w * viddef.rx;
else
nw = 0;
if (h)
nh = h * viddef.ry;
else
nh = 0;
/* horizontal texture mapping */
if (sh) {
if (!w)
nw = (sh - sl) * viddef.rx;
sh /= image->width;
} else {
if (!w)
nw = ((float)image->width - sl) * viddef.rx;
sh = 1.0f;
}
sl /= image->width;
/* vertical texture mapping */
if (th) {
if (!h)
nh = (th - tl) * viddef.ry;
th /= image->height;
} else {
if (!h)
nh = ((float)image->height - tl) * viddef.ry;
th = 1.0f;
}
tl /= image->height;
/* fill the rest of the coordinates to make a rectangle */
x4 = x1;
x3 = x2 = x1 + nw;
y2 = y1;
y4 = y3 = y1 + nh;
if (flip) {
const float tmp = sl;
sl = sh;
sh = tmp;
}
const vec2_t imageTexcoords[4] = {{sl, tl}, {sh, tl}, {sh, th}, {sl, th}};
const vec2_t imageVerts[4] = {{x1, y1}, {x2, y2}, {x3, y3}, {x4, y4}};
R_DrawImageArray(imageTexcoords, imageVerts, image);
}
