/*-------------------------------------------------
* union_render_bounds - compute the union of two
* render_bounds
* -------------------------------------------------*/
public static void union_render_bounds(render_bounds dest, render_bounds src)
{
dest.x0 = Math.Min(dest.x0, src.x0);
dest.x1 = Math.Max(dest.x1, src.x1);
dest.y0 = Math.Min(dest.y0, src.y0);
dest.y1 = Math.Max(dest.y1, src.y1);
}
/*-------------------------------------------------
* set_render_bounds_wh - cleaner way to set the
* bounds
* -------------------------------------------------*/
public static void set_render_bounds_wh(render_bounds bounds, float x0, float y0, float width, float height)
{
bounds.x0 = x0;
bounds.y0 = y0;
bounds.x1 = x0 + width;
bounds.y1 = y0 + height;
}
/*-------------------------------------------------
* set_render_bounds_xy - cleaner way to set the
* bounds
* -------------------------------------------------*/
public static void set_render_bounds_xy(render_bounds bounds, float x0, float y0, float x1, float y1)
{
bounds.x0 = x0;
bounds.y0 = y0;
bounds.x1 = x1;
bounds.y1 = y1;
}
public uint32_t screen_update(screen_device screen, bitmap_rgb32 bitmap, rectangle cliprect)
{
uint32_t flags = PRIMFLAG_ANTIALIAS(1) | PRIMFLAG_BLENDMODE(BLENDMODE_ADD) | PRIMFLAG_VECTOR(1);
rectangle visarea = screen.visible_area();
float xscale = 1.0f / (65536 * visarea.width());
float yscale = 1.0f / (65536 * visarea.height());
float xoffs = (float)visarea.min_x;
float yoffs = (float)visarea.min_y;
int curpointIdx = 0; //point *curpoint;
int lastx = 0;
int lasty = 0;
curpointIdx = 0; //curpoint = m_vector_list.get();
var curpoint = m_vector_list;
screen.container().empty();
screen.container().add_rect(0.0f, 0.0f, 1.0f, 1.0f, new rgb_t(0xff, 0x00, 0x00, 0x00), PRIMFLAG_BLENDMODE(BLENDMODE_ALPHA) | PRIMFLAG_VECTORBUF(1));
for (int i = 0; i < m_vector_index; i++)
{
render_bounds coords = new render_bounds();
float intensity = (float)curpoint[curpointIdx].intensity / 255.0f; //float intensity = (float)curpoint->intensity / 255.0f;
float intensity_weight = normalized_sigmoid(intensity, vector_options.s_beam_intensity_weight);
// check for static intensity
float beam_width = m_min_intensity == m_max_intensity
? vector_options.s_beam_width_min
: vector_options.s_beam_width_min + intensity_weight * (vector_options.s_beam_width_max - vector_options.s_beam_width_min);
// normalize width
beam_width *= 1.0f / (float)VECTOR_WIDTH_DENOM;
// apply point scale for points
if (lastx == curpoint[curpointIdx].x && lasty == curpoint[curpointIdx].y) //if (lastx == curpoint->x && lasty == curpoint->y)
{
beam_width *= vector_options.s_beam_dot_size;
}
coords.x0 = ((float)lastx - xoffs) * xscale;
coords.y0 = ((float)lasty - yoffs) * yscale;
coords.x1 = ((float)curpoint[curpointIdx].x - xoffs) * xscale; //coords.x1 = ((float)curpoint->x - xoffs) * xscale;
coords.y1 = ((float)curpoint[curpointIdx].y - yoffs) * yscale; //coords.y1 = ((float)curpoint->y - yoffs) * yscale;
if (curpoint[curpointIdx].intensity != 0) //if (curpoint->intensity != 0)
{
screen.container().add_line(
coords.x0, coords.y0, coords.x1, coords.y1,
beam_width,
new rgb_t(((uint32_t)curpoint[curpointIdx].intensity << 24) | (curpoint[curpointIdx].col & 0xffffff)), //(curpoint->intensity << 24) | (curpoint->col & 0xffffff),
flags);
}
lastx = curpoint[curpointIdx].x; //lastx = curpoint->x;
lasty = curpoint[curpointIdx].y; //lasty = curpoint->y;
curpointIdx++; //curpoint++;
}
return(0);
}
/*-------------------------------------------------
* render_clip_line - clip a line to a rectangle
* -------------------------------------------------*/
public static bool render_clip_line(ref render_bounds bounds, render_bounds clip)
{
/* loop until we get a final result */
while (true)
{
u8 code0 = 0;
u8 code1 = 0;
u8 thiscode;
float x;
float y;
/* compute Cohen Sutherland bits for first coordinate */
if (bounds.y0 > clip.y1)
{
code0 |= 1;
}
if (bounds.y0 < clip.y0)
{
code0 |= 2;
}
if (bounds.x0 > clip.x1)
{
code0 |= 4;
}
if (bounds.x0 < clip.x0)
{
code0 |= 8;
}
/* compute Cohen Sutherland bits for second coordinate */
if (bounds.y1 > clip.y1)
{
code1 |= 1;
}
if (bounds.y1 < clip.y0)
{
code1 |= 2;
}
if (bounds.x1 > clip.x1)
{
code1 |= 4;
}
if (bounds.x1 < clip.x0)
{
code1 |= 8;
}
/* trivial accept: just return FALSE */
if ((code0 | code1) == 0)
{
return(false);
}
/* trivial reject: just return TRUE */
if ((code0 & code1) != 0)
{
return(true);
}
/* fix one of the OOB cases */
thiscode = code0 > 0 ? code0 : code1;
/* off the bottom */
if ((thiscode & 1) != 0)
{
x = bounds.x0 + (bounds.x1 - bounds.x0) * (clip.y1 - bounds.y0) / (bounds.y1 - bounds.y0);
y = clip.y1;
}
/* off the top */
else if ((thiscode & 2) != 0)
{
x = bounds.x0 + (bounds.x1 - bounds.x0) * (clip.y0 - bounds.y0) / (bounds.y1 - bounds.y0);
y = clip.y0;
}
/* off the right */
else if ((thiscode & 4) != 0)
{
y = bounds.y0 + (bounds.y1 - bounds.y0) * (clip.x1 - bounds.x0) / (bounds.x1 - bounds.x0);
x = clip.x1;
}
/* off the left */
else
{
y = bounds.y0 + (bounds.y1 - bounds.y0) * (clip.x0 - bounds.x0) / (bounds.x1 - bounds.x0);
x = clip.x0;
}
/* fix the appropriate coordinate */
if (thiscode == code0)
{
bounds.x0 = x;
bounds.y0 = y;
}
else
{
bounds.x1 = x;
bounds.y1 = y;
}
}
}
/*-------------------------------------------------
* render_clip_quad - clip a quad to a rectangle
* -------------------------------------------------*/
public static bool render_clip_quad(ref render_bounds bounds, render_bounds clip, ref render_quad_texuv texcoords, bool use_texcoords)
{
/* ensure our assumptions about the bounds are correct */
assert(bounds.x0 <= bounds.x1);
assert(bounds.y0 <= bounds.y1);
/* trivial reject */
if (bounds.y1 < clip.y0)
{
return(true);
}
if (bounds.y0 > clip.y1)
{
return(true);
}
if (bounds.x1 < clip.x0)
{
return(true);
}
if (bounds.x0 > clip.x1)
{
return(true);
}
/* clip top (x0,y0)-(x1,y1) */
if (bounds.y0 < clip.y0)
{
float frac = (clip.y0 - bounds.y0) / (bounds.y1 - bounds.y0);
bounds.y0 = clip.y0;
if (use_texcoords) //if (texcoords != nullptr)
{
texcoords.tl.u += (texcoords.bl.u - texcoords.tl.u) * frac;
texcoords.tl.v += (texcoords.bl.v - texcoords.tl.v) * frac;
texcoords.tr.u += (texcoords.br.u - texcoords.tr.u) * frac;
texcoords.tr.v += (texcoords.br.v - texcoords.tr.v) * frac;
}
}
/* clip bottom (x3,y3)-(x2,y2) */
if (bounds.y1 > clip.y1)
{
float frac = (bounds.y1 - clip.y1) / (bounds.y1 - bounds.y0);
bounds.y1 = clip.y1;
if (use_texcoords) //if (texcoords != nullptr)
{
texcoords.bl.u -= (texcoords.bl.u - texcoords.tl.u) * frac;
texcoords.bl.v -= (texcoords.bl.v - texcoords.tl.v) * frac;
texcoords.br.u -= (texcoords.br.u - texcoords.tr.u) * frac;
texcoords.br.v -= (texcoords.br.v - texcoords.tr.v) * frac;
}
}
/* clip left (x0,y0)-(x3,y3) */
if (bounds.x0 < clip.x0)
{
float frac = (clip.x0 - bounds.x0) / (bounds.x1 - bounds.x0);
bounds.x0 = clip.x0;
if (use_texcoords) //if (texcoords != nullptr)
{
texcoords.tl.u += (texcoords.tr.u - texcoords.tl.u) * frac;
texcoords.tl.v += (texcoords.tr.v - texcoords.tl.v) * frac;
texcoords.bl.u += (texcoords.br.u - texcoords.bl.u) * frac;
texcoords.bl.v += (texcoords.br.v - texcoords.bl.v) * frac;
}
}
/* clip right (x1,y1)-(x2,y2) */
if (bounds.x1 > clip.x1)
{
float frac = (bounds.x1 - clip.x1) / (bounds.x1 - bounds.x0);
bounds.x1 = clip.x1;
if (use_texcoords) //if (texcoords != nullptr)
{
texcoords.tr.u -= (texcoords.tr.u - texcoords.tl.u) * frac;
texcoords.tr.v -= (texcoords.tr.v - texcoords.tl.v) * frac;
texcoords.br.u -= (texcoords.br.u - texcoords.bl.u) * frac;
texcoords.br.v -= (texcoords.br.v - texcoords.bl.v) * frac;
}
}
return(false);
}
// texture/bitmap queries
//-------------------------------------------------
// get_char_texture_and_bounds - return the
// texture for a character and compute the
// bounds of the final bitmap
//-------------------------------------------------
public render_texture get_char_texture_and_bounds(float height, float aspect, char32_t chnum, ref render_bounds bounds)
{
glyph gl = get_char(chnum);
// on entry, assume x0,y0 are the top,left coordinate of the cell and add
// the character bounding box to that position
float scale = m_scale * height;
bounds.x0 += (float)gl.xoffs * scale * aspect;
// compute x1,y1 from there based on the bitmap size
bounds.x1 = bounds.x0 + (float)gl.bmwidth * scale * aspect;
bounds.y1 = bounds.y0 + (float)m_height * scale;
// return the texture
return(gl.texture);
}
public float y1; // bottommost Y coordinate
public render_bounds(render_bounds rhs)
{
x0 = rhs.x0; y0 = rhs.y0; x1 = rhs.x1; y1 = rhs.y1;
}